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Friedrich 2008 Air Conditioner User Manual

1. 33 34 oJ T ___ 35 36 Compressor Replacement os Emm 37 38 39 40 41 48 VICO 8216 18 49 58 Instructions Tor Using Cooling Load Estimate 58 Cooling Load Estimate 60 PIC AL Oa FOND 61 62 DOTT e 63 IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair and who is equipped with the proper tools and test instruments required to service this product Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal Safety warnings have been placed throughout this manual to
2. s oe 15 sor t 9 mem e 2 mo f 1 1 1 e Q Chassis e e e gt oo gt gt e e 5 s 8 m e xm es wo NE LE Lis 1 2 11 e r r gt lt gt lt gt 54 4 gt e co co e oo gt D 1 1 gt lt gt c c c e o e eo oe m s 2 9 m swe a 8 w a 8 2 m m mv w m y m 6 m umm sno m m 9 s 5 zs m m 6 ee 2 Ww eus 8 nj m m wx pa sro po
3. AM IRR uud E ree 7 ried Service Manual S Models 2009 2008 l a Room Conditioners Twintemp RAC ServMan 04 09 TECHNICAL SUPPORT CONTACT INFORMATION rriedrich FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 San Antonio Texas 78295 1540 4200 Expressway San Antonio Texas 78218 5212 210 357 4400 FAX 210 357 4490 www friedrich com Printed in the U S A Table Of Contents Important Safety Information PEDRO 4 2 4 11114818 79 E E E A E 5 Sirene ____________ _ ET 6 Chassis Specifications for 2009 2009 Eve pe Sue Te 7 Installation Information Sleeve Dimensions 9 Data 9 zoe __6_6__ _ _ 10 Before Operating the
4. 2 Ssmo m o y n jv se mm E EE UN UE NB VS ME GENE s m 283 o e 8 9 s 5 ox os m 2 m mo xem o Conditions 80 degrees room temp amp 50 relative humidity with 95 degree outside air temp amp 40 relative humidity all systems use R22 S Chassis N 4 gt e lt gt e gt gt gt co ole aee E M Chassis Qe Qe ea N N lt lt gt lt gt E qm A lt gt e L Chassis 10 ELECTRICAL DATA WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes which have jurisdiction Failure to do so can result in personal injury or death NOTICE FIRE HAZARD Not following the above WARNING could result in fire or electically unsafe con
5. INDOOR THERMOSTAT PART NO REV FAN ONLY xlololololololololo OUTDOOR THERMOSTAT 921 008 00 ELECTROMECHANICAL CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS YS13L33 D E YM18L34 D E WIRING DIAGRAM COMPRESSOR TERMINAL ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR RED ALTERNATE COMPRESSOR WIRE YELLOW 1 o pue TT BLUE a es BLACK CONDUCTOR GREEN OR GREEN YELLOW oo oc 23 0 lt CAPACITOR BRACKET CHASSIS BRACKET WHITE CONDUCTOR HARNESS 171771 BLACK gt OVERLOAD GREEN GREEN YELLOW TO INNERWALL CONNECTOR MOTOR MOUNT SCHEMATIC MEDIUM S 223 MTR HIGH a SWITCH LOGIC OPEN X CLOSED ANTICIPATOR RESISTOR 4 5 6 7 8 9110 MONEY SAVER Qr ese To CAPACITOR coot MEDIUM CooL FAN MOTOR picem RHEIN OVERLOAD PROTECTOR MEDIUM HEAT 10 REVERSING VALVE Low 1 HEATER LIMIT ONLY THERMAL FUSE COMPRESSOR FAN INDOOR THERMOSTAT OUTDOOR THERMOSTAT GROUND LEAD COMBINATION TERMINAL PLASTIC INSULATOR PART NO
6. Q Q OVLD FAN MTR MR COMPRESSOR 2 70 HERM 0 5 X CLOSED SWITCH LOGIC 0 OPEN SWITCH POSITION CIRCUIT 123145 CAPACITOR THERMISTER olo ololo COMER COMPRESSOR 6 COMBINATION TERMINAL HI COOL OVERLOAD PROTECTOR Il GROUND LEAD MED COOL io LOW COOL io o X 0 x Low C PART NO REV 5 921 001 00 ELECTROMECHANICAL CONTROL COOL ONLY MODELS KS12L10 E F KS15L10 C D KM18L30 C D KM24L30 C D COMPRESSOR COMPRESSOR TERMINAL ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR OVERLOAD PROTECTOR COMPRESSOR WIRE HARNESS CONNECT CAPACITOR TERMINAL OR BRACKET MAY VARY REFER TO TERMINAL MARKINGS CONNECT TO CHASSIS WHITE SCHEMATIC 2 SYSTEM SWITCH X CLOSED SWITCH LOGIC CLOS SWITCH POSITION 1 2 3 4 5 6 0 0 LOW 10 0 01 10 10101 1010 10 1 01010 ONLY 0 0 010 L cooL gt 0 0 01 WIRING DIAGRAM SWITCH SYSTEM BLACK CONDUCTOR WHITE CONDUCTOR OR GREEN YELLOW INNERVALL IENTATION MOTOR MOUNT GREEN YELLOW GREEN SUPPLY CORD fas CAPACITUR 12 230 208
7. Figure 13 System Control Switch Heat Models KS KM SL Models See Figure 14 A six position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating low medium or high speed The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel Figure 14 System Control Panel KS KM SL Quietillaster Allow 3 min between restarts 19 20 SYSTEM CONTROL SWITCH TEST See Figure 15 Disconnect leads from control switch There must be continuity as follows 1 Off Position no continuity between terminals 2 Lo Position between terminals L1 and C LO and MS 3 Med Position between terminals L1 and C M and MS 4 Hi Cool Position between terminals L1 and C and MS 5 Fan Only Position between terminals L1 and 2 Figure 15 System Control Switch EQ08 SYSTEM CONTROL SWITCH TEST See Figure 16 Turn knob to phase of switch to be tested There must be continuity as follows 1 Fan Only Position between terminals MS 2 Cool Position between terminals L1 and and MS and 3 Low Position between terminals 11 and MS and
8. GREEN YELLOW TO INNERWALL MOTOR MOUNT HEATER MEDIUM Q OVLD D HIGH 63 7 ANTICIPATOR RESISTOR MONEY SAVER ROCKER SWITCH qui I CAPACITOR COMPRESSOR TF THERMAL FUSE FAN MOTOR 4 GROUND LEAD OVERLOAD PROTECTOR e COMBINATION TERMINAL INDOOR THERMOSTAT PLASTIC INSULATOR PART NO 921 004 00 55 ELECTROMECHANICAL CONTROL HEAT PUMP ONLY MODELS YSO9L10 F G WIRING DIAGRAM COMPRESSOR TERMINAL ORIENTATION REVERSING REVER MAY VARY REFER TO MARKINGS ON COMPRESSOR u ALTERNATE 550 WIRE HARNESS DEFROST THERMOSTAT D COMPRESSOR BRLIWN ____ RED c COPTIONALD BLACK CONDUCTOR TO INNERWALL GREEN YELLOW MOTOR MOUNT GREEN 2 e E gt MEDIUM SWITCH LOGIC SWITCH POSITION CIRCUIT ANTICIPATOR RESISTOR 1121 31415 6 17 18 9 110 MONEY SAVER GROUND LEAD orr 0 010 01010 CAPACITOR COMBINATION TERINA LOW COOL ol of of xIxTo x 0 COMPRESSOR MEDIUM COOL xL oro x o x lo ix fo FAN MOTOR PLASTIC INSULATOR THIGH COOL _ CONNECTOR HIGH HEAT Of o MEDIUM HEAT lolx REVERSING VALVE LOW HEAT 0
9. HEATING ELEMENT See Figure 25 All heat pumps and electric heat models are equipped with a heating element with the exception of models starting with YS09 The YS and models are equipped with a 3 3 KW element The YM and EM models are equipped with a 4 0 KW element The YL EL models are equipped with a 5 2 KW element The EQO8 has 1 15 KW element 4 bs Figure 25 ig K Heating Element c 4 12 lt The heating element contains a fuse link and a heater limit switch The fuse link is in series with the power supply and will open and interrupt the power when the temperature reaches 199 F or a short circuit occurs in the heating element Once the fuse link separates a new fuse link must be installed NOTE Always replace with the exact replacement The heater element has a high limit control This control is a bimetal thermostat mounted in the top of the heating element Should the fan motor fail or filter become clogged the high limit control will open and interrupt power to the heater before reaching an unsafe temperature condition The control is designed to open at 110 F 6 F Test continuity below 110 F and for open above 110 F HEATING ELEMENT Heat Pump Models The heating element for the Y model is energized by an outdoor thermostat The outdoor defrost thermostat is adjusted at predetermined temperature to bring on the heating element and turn off the com
10. thermostat remains satisfied for more than approximately 9 minutes the fan will turn on for a period of 90 seconds for air sampling Operation in MONEY SAVER mode will light both the MONEY SAVER and COOL indicators FAN ONLY Mode When in the FAN ONLY mode the compressor will not operate The fan will run continuously at the user selected speed see Fan Speed Set below Smart Fan is not available in FAN ONLY Mode Fan Speed Set SS SM fan speed is changed by pressing SPEED 1 4 pad and scrolling through F1 F2 F3 and F4 in the digital display XQ fan speed is changed by pressing FAN SPEED pad and scrolling through F1 F2 F3 and SF Smart Fan in the digital display There will be a 2 second delay before the fan speed changes to prevent unnecessary switching of the relays during fan speed selection SMART FAN On the SS SM models smart fan is activated by pressing the SMART FAN button On the XQ model smart fan is activated by pressing the FAN SPEED button and scrolling through speeds until SF appears in the digital display Using the remote control Smart Fan is selected by the fourth push of Fan Speed button Smart fan changes fan speeds based on the temperature differential between the ambient and set temperatures 25 26 REFRIGERATION SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigeration system is essential for the service technician Without this understanding accur
11. 41 42 COOLING ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Possible Cause po tion ______ Replace fuse reset breaker If repeats check Fuse blown or circuit tripped fuse or breaker size Check for shorts in unit wiring amp components Power cord not plugged in Plug it in 1777 switch OFF position oet switch correctly Inoperative system switch or open Test for continuity control board Loose or disconnected wiring at switch control board or other com ponents Possible Cause potion 0 Dirty filter Clean as recommended in Owner s Manual Check for dirty or obstructed coil Use Restricted airflow pressure wash or biodegradable cleaning agent to clean Evaporator coil Inoperative t stat or thermistors Test for continuity freezes up Short of refrigerant De ice coil amp check for leak Inoperative fan motor Test fan motor amp replace if inoperative De ice coil Check temp differential delta T Partially restricted capillary tube across coil Touch test coil return bends for same temp Test for low running current Problem Possible Cause Unit undersized Test cooling performance amp Excessive heat load a replace with larger unit if needed OE Check for partially iced coil amp check Restriction in line temperature split across Check for oil at silver soldered connections Refrigerant leak Check for partially iced coil Check split across coil Che
12. Ds EE m o s m m s mam e mm n wew s e m w m m soy ee e 27 52 8 m m 20 suse 58 oo t 2 qnc aj w y ow n m n momo 93 m w 9 n n m w so o 9 NC ME m7 m m m m u 5 m a ps s px s pis je 93 s m e n S m mn e s mm swaxo m m m e o 5 s jm 6 wew px o9 o 39 3x8 x pm see mj m m 9 8 m m m so Go 200 sm 9 w m 5 m m so 6 s m 8 sms amp 93 qw w u y mo 6 s x n2 eo so xem 02000 m m e m 2 9 m w jn
13. 2 Touch the Mode button once to activate the MoneySaver light on MoneySaver is a feature that cycles the fan with the compressor so that the fan does not run all the time This saves energy and improves dehumidification Or you may prefer constant fan for more air movement to return to constant fan touch the Mode button two more times In order to run the fan by itself do the following 3 Continuing from MoneySaver mode light on touch the Mode button once to activate the FAN ONLY feature light on The FAN ONLY setting will circulate air in the room without the com pressor coming on To adjust temperature 4 Use the Mode button to select either the COOL or MoneySaver function 5 COOLER Touch the button to lower the room air temperature 6 WARMER Touch the A button to raise the room air temperature 7 Press both the A and V buttons at the same time to switch the temperature readout from Fahrenheit F to Celsius Repeat step 7 to switch from C back to F To adjust fan speed Touch the Fan Speed button to see the current setting Touch it again to change speed F1 isthe lowest setting SLEEP SETTING LOW F2 is MEDIUM and F3 is HIGH To activate Smart Fan 9 There is a fourth option SF when selecting the fan speed This is the SMART FAN function SMART FAN DOES NOT OPERATE IN CONJUCTION WITH THE FAN ONLY MODE Smart Fan will adjust the fan speed automatically to maintain the des
14. Bellows Assembly Drain Pan Valve DEFROST THERMOSTAT OPERATION HEAT PUMP WITH ELECTRIC HEAT YS YM AND YL MODELS This control is dual purpose control that acts as an outdoor thermostat and defrost control When the sensing bulb attached to the condenser coil senses enough icing on the outdoor coil it will interrupt power to the compressor and supply power to the electric heating element until the coil temperature reaches above 43 then the electric heater will shut off and the unit will resume operating in the reverse cycle mode When the outdoor coil temperature drops below 20 the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43 The fan motor will not turn off when defrost occurs and the 4 way valve will not reverse ELECTRONIC CONTROL SEQUENCE OF OPERATION QME AND MODELS Mode Control The mode control pad s allow the selection of the operating modes of the unit There is a two second delay before the mode activates its appropriate relay OPERATING SEQUENCE CHARACTERISTICS AND FEATURES Compressor Operation The run state of the compressor is determined by the difference between the indoor ambient temperature and the set temperature See specific mode of operation for details Compressor Time Delay 180 seconds This feature is initiated every time the compressor is de energized either due to 1 satisfying the temper
15. If coil tests okay reconnect the electrical leads 6 Make sure coil has been assembled correctly NOTE Do not start unit with solenoid coil removed from valve or do not remove coil after unit is in operation This will cause the coil to burn out CHECKING THE REVERSING VALVE NOTE You must have normal operating pressures before the reversing valve can shift A WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death Check the operation of the valve by starting the system and switching the operation from Cooling to Heating and then back to Cooling Do not hammer on valve Occasionally the reversing valve may stick in the heating or cooling position or in the mid position When sluggish or stuck in the mid position part of the discharge gas from the compressor is directed back to the suction side resulting in excessively high suction pressure Should the valve fail to shift from coooling to heating block the air flow through the outdoor coil and allow the discharge pressure to build in the system Then switch the system from heating to cooling If the valve is stuck in the heating position block the air flow through the indoor coil and allow discharge pressure
16. LO 4 Low Heat Position between terminals L2 and 2 and MS and LO 5 Hi Position between terminals L2 and 2 and MS and Figure 16 System Control Switch EQ Models FUNCTIONAL COMPONENT DEFINITIONS MECHANICAL COMPONENTS Bellows condensate valve Temperature sensitive valve that opens up to drain off condensate water when the outside temperature falls below 40 F and closes when the outside temperature reaches 58 F Vent door Allows introduction of fresh air into the room and or exhausts stale room air outside on select models Plenum assembly Diffuser with directional louvers used to direct the conditioned airflow Blower wheel Attaches to the indoor side of the fan motor shaft and is used for distributing unconditioned room side air though the heat exchanger and delivering conditioned air into the room Slinger fan blade Attaches to the outdoor side of the fan motor shaft and is used to move outside air through the condenser coil while slinging condensate water out of the base pan and onto the condenser coil thus lowering the temperature and pressures within the coil ELECTRICAL COMPONENTS Thermostat Used to maintain the specified room side comfort level System switch Used to regulate the operation of the fan motor the compressor or to turn the unit off For troubleshoot ing refer to the wiring diagrams and schematics in the back of this service manua
17. S M and L sleeves may be installed in window with no side kits if properly installed Circuit Rating Breaker Circuit Rating Breakeror PlugFace PowerCord Wall Outlet T D Fuse NEMA Length ft Appearance All XQ MODELS KS12L10 and KS15L10 5508110 5510110 125V 15A 5512110 and 5514110 EQO8L11A YS09L10 SIDE VIEW 18130 5512130 5516130 SM18L30A and 250 15 SM21L30 KM24L30 SM24L30 and SL28L30 2 Window Mounting Kits ES12133 and ES16L33 513133 Kit No SL36L30A 18134 EM24L34 and ERE iim EL36L35A YM18L34 and YL24L35 290V 30A ES12L33 ES16L33 YSO9L10 5131 33 WIKS EM18L34 YM18L34 and EM24L34 WIKM EL36L35A and YL24L35 WIKL TWINTEMP models include accessories for thru the wall installation only Window mounting requires use of optional accessory kit as listed above PERFORMANCE DATA FOR 2009 2008 MODELS COOLING EVAP AIR TEMP DEG F Discharge Temp Suction Temp Super Heat Sub NL Voltage PERFORMANCE Temp TEMPERATURE DEG Locked Rotor in 8 _ mw a9 _ 5 Lc fa om sm nm em fim fat ie 2 n wm e s ams m a se v Jw ELEM ae 3
18. could result in serious injury or death FAN MOTOR TEST 1 Determine that capacitor is serviceable 2 Disconnect fan motor wires from fan speed switch or system switch 3 Apply live test cord probes on black wire and common terminal of capacitor Motor should run at high speed 4 Apply live test cord probes on red wire and common terminal of capacitor Motor should run at low speed 5 Apply test cord probes on each of the remaining wires from the speed switch or system switch to test intermediate speeds If the control is in the MoneySaver mode and the thermostat calls for cooling the fan will start then stop after approximately 2 minutes then the fan and compressor will start together approximately 2 minutes later Figure 23 Fan Motor CAPACITORS ELECTRIC SHOCK HAZARD Turn off electric power before servicing Discharge capacitor with a 20 000 Ohm 2 Watt resistor before handling Failure to do so may result in personal injury or death Many motor capacitors are internally fused Shorting the terminals will blow the fuse ruining the capacitor A 20 000 ohm 2 watt resistor can be used to discharge capacitors safely Remove wires from capacitor and place resistor across terminals When checking a dual capacitor with a capacitor analyzer or ohmmeter both sides must be tested Capacitor Check with Capacitor Analyzer The capacitor analyzer will show whether the capacitor is o
19. unit while in operation with high temperature 3 0 0 components Wear protective safety aids such gloves clothing etc Failure to do so could result in serious burn injury NOTICE FIRE HAZARD The use of a torch requires extreme care and proper judgment Follow all safety recommended precautions and protect surrounding areas with fire proof materials Have a fire extinguisher readily available Failure to follow this notice could result in moderate to serious property damage 3 After all refrigerant has been recovered disconnect suction and discharge lines from the compressor and remove compressor Be certain to have both suction and discharge process tubes open to atmosphere 4 Carefully pour a small amount of oil from the suction stub of the defective compressor into a clean container 5 Using an acid test kit one shot or conventional kit test the oil for acid content according to the instructions with the kit 6 If any evidence of a burnout is found no matter how slight the system will need to be cleaned up following proper procedures 7 Install the replacement compressor WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death 8 Pressurize with a combination of R 22 and nitrogen and leak test all conne
20. 7 Electronic Halogen Leak Detector Type H 6 or equivalent 8 Accurate refrigerant charge measuring device such as a Balance Scales 1 2 oz accuracy b Charging Board 1 2 oz accuracy WARNING RISK OF ELECTRIC SHOCK Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death Refrigerant Charging NOTE Because The RAC System Is A Sealed System Service Process Tubes Will Have To Be Installed First Install A Line Tap And Remove Refrigerant From System Make Necessary Sealed System Repairs And Vacuum System Crimp Process Tube Line And Solder End Shut Do Not Leave A Service Valve In The Sealed System 9 High Pressure Gauge 0 400 16 10 Low Pressure Gauge 30 150 Ibs 11 Vacuum Gauge 0 1000 microns EQUIPMENT MUST BE CAPABLE OF 1 Recovery CFC s as low as 5 2 Evacuation from both the high side and low side of the system simultaneously 3 Introducing refrigerant charge into high side of the system 4 Accurately weighing the refrig
21. 921 006 00 01 of ELECTROMECHANICAL CONTROL HEAT PUMP WITH ELECTRIC HEAT MODELS YL24L35 E F WIRING DIAGRAM COMPRESSOR TERMINAL REVERSING ORIENTATION VALVE MAY VARY REFER TO MARKINGS ON COMPRESSOR RED ALTERNATE 550 55 z RED OVERLOAD YELLOW COMPRESSOR GREEN OR GREEN YELLOW INNERVALL MOTOR MOUNT MS ROCKER ORANGE Soo SWITCH TO CAPACITOR BRACKET BLUE TO CHASSIS BRACKET BROWN gt BLACK CONDUCTOR o c WHITE CONDUCTOR CAPACITOR 2 L2 o1 gt i MEDIUM SSS 02 N OVLD FAN MTR 2 5 2 Q 1 3 1 R cO EXO COMPRESSOR gt HOD 2 ae 2 RV HL HEATER SWITCH LOGIC open x CLOSED SWITCH POSITION CIRCUIT ANTICIPATOR RESISTOR 7 12 1312 516 7 81910 INDOOR THERMOSTAT 0 OUTDOOR THERMOSTAT To TO TXTXTO T XL 0 COMPRESSOR i GROUND LEAD MEDIUM COOL 0 X XT OT X 0 FAN MOTOR HIGH COO To x 0 PROTECTOR e COMBINATION TERMINAL 0 10 010 PLASTIC INSULATOR MEDIUM HEAT 0 X XO X REVERSING VALVE HAT Jojojo xj oj xjo x o
22. N 115V IDT lo col OVLD ANTICIPATOR RESISTOR MONEY SAVER ROCKER SWITCH CAP CAPACITOR COMPR COMPRESSOR n GROUND LEAD MTR FAN MOTOR COMBINATION TERMINAL OVLD OVERLOAD PROTECTOR O PLASTIC INSULATOR IDT INDOOR THERMOSTAT modu NO BA 921 000 00 00 51 52 ELECTROMECHANICAL CONTROL COOL ONLY MODELS SL36L30A D A E SL28L30 D E COMPRESSOR COMPRESSOR TERMINAL ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR OVERLOAD PROTECTOR COMPRESSOR WIRE HARNESS ANTICIPATOR T RESISTOR CAPACITOR CONNECT TO CAPACITOR BRACKET TERMINAL MARKINGS CONNECT TO CHASSIS WHITE X CLOSED SWITCH LOGIC CLOS 2345 orr Low 010101 MED COOL xjojo xjo coo FAN ONLY WIRING DIAGRAM ud BLACK BLACK WHITE BLACK CONDUCTOR RED OR ORANGE DR GREEN YELLOW TERMINAL ORIENTATION MAY VARY REFER TO FAN MOTOR IDT LEGEND ANTICIPATOR RESISTOR MONEY SAVER ROCKER SWITCH CAPACITOR COMPRESSOR h OVERLOAD PROTECTOR INDOOR THERMOSTAT O WHITE CDNDUCTDR GREEN YELLOW GREEN SUPPLY CORD TD GROUND LEAD COMBINATION TERMINAL PLASTIC INSULATOR PART NO 921 003 00 00 ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODEL EQ08L
23. To adjust fan speed Touch 1 4 Speed to see current setting Touch again to change speed F1 is the lowest setting SLEEP SETTING F2 is low speed LOW F3 is medium speed MED F4 is high speed HIGH To activate smart fan Touch Smart Fan light on Smart Fan will adjust the fan speed automatically to maintain the desired comfort level For example if the outside doors in your home are open for an extended period of time or more people enter a room Smart Fan may adjust to a higher fan speed to compensate for the increased heat load This keeps you from having to adjust the fan speed on your own Smart Fan cannot be activated in the Fan Only mode To deactivate smart fan Touch 1 4 Speed and select your desired fan speed To set hour clock Press Set Hour once to see the current clock setting Continue pressing the button until the hour closest to the actual time appears in the display MAKE SURE YOU SET A M AND P M PROPERLY A light will appear in the upper left corner of the display when the hour is P M NOTE Minutes will NOT show on display DISPLAY Figure 3 ay f A Set Check Hour Filter Press to reset Power 3 Saver Only Dv 9 9 1 5 1 4 Smart Speed Fan 8 p A C A C Timer Stop Start On Off D snanr CENTER by To set the timer NOTE Set Hour clock before attempting to set timer functions You can s
24. alert you to potential hazards that may be encountered If you install or perform service on equipment it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which may result to you or others Your safety and the safety of others are very important We have provided many important safety messages in this manual and on your appliance Always read and obey all safety messages This is a Safety Alert symbol This symbol alerts you to potential hazards that can kill or hurt you and others All safety messages will follow the safety alert symbol with the word WARNING or CAUTION These words mean WARN You be killed or seriously injured if you do not follow instructions A CAUTION You can receive minor or moderate injury if you do not follow instructions All safety messages will tell you what the potential hazard is tell you how to reduce the chance of injury and tell you what will happen if the instructions are not followed A message to alert you of potential property damage will have the N O word NOTICE Potential property damage can occur if instructions are not followed PERSONAL INJURY OR DEATH HAZARDS ELECTRICAL HAZARDS e Unplug and or disconnect all electrical power to the unit before performing inspections maintenance or service e sure to follow proper lockout tag out procedures e Always work in the company of a qu
25. as kitchen and laundry equipment are not included in this form 59 COOLING LOAD ESTIMATE FORM HEAT GAIN FROM GUANTITY FACTORS BTU Hr DAY Quantity x Factor No Inside Outside Area WINDOWS Heat gain from the sun Shades Shades Awnings X Factor Northeast _ ft 20 Use East These factors are for single glass ft 25 m only only For glass block multiply the 20 mnm the above factors by 0 5 for double des glass or storm windows multiply the 20 largest Southeast South ies above factors by 0 8 Sq Tt 30_ load es ft 45 Use Northwest ft 39 only North ft one WINDOWS Heat by conduction Total of all windows Single glass Double glass or glass block WALLS Based on linear feet of wall Light Construction Heavy Construction a Outside walls North Exposure 30 20 Other than North exposure 60 30 b Inside Walls between conditioned and unconditioned spaces only 4 ROOF OR CEILING Use one only a Roof uninsulated b Roof 1 inch or more insulation Ceiling occupied space above d Ceiling insulated with attic space above e Ceiling uninsulated with attic space above Floor Disregard if floor is directly on ground or over a basement 6 NUMBER OF PEOPLE 600 7 LIGHTS AND ELECTRICAL EQUIPMENT IN USE watts 3 DOORS AND ARCHES CONTINUOUSLY OPENED TO UNCONDITIONED SPACE TOTAL LINEAR FEET OF WIDTH 9 SUBTOTAL cese KKKKK 10 TOTAL COOLING LOAD BTU per hour to be
26. check to be certain that compressor is not out on internal overload Complete evaluation of the system must be made whenever you suspect the compressor is defective If the compressor has been operating for sometime a careful examination must be made to determine why the compressor failed NOTE OHM Figures are for examples only not actual values for the compressor 3 16 OHMS 49 OHMS 3 65 OHMS RESISTANCE Stoc RESISTANCE RtoC EQUALS RESISTANCE S toR Many compressor failures are caused by the following conditions 1 Improper air flow over the evaporator 2 Overcharged refrigerant system causing liquid to be returned to the compressor 3 Restricted refrigerant system 4 Lack of lubrication o Liquid refrigerant returning to compressor causing oil to be washed out of bearings 6 Noncondensables such as air and moisture the system Moisture is extremely destructive to a refrigerant system 7 test see page 21 CHECKING COMPRESSOR EFFICIENCY The reason for compressor inefficiency is normally due to broken or damaged suction and or discharge valves reducing the ability of the compressor to pump refrigerant gas This condition can be checked as follows 1 Install a piercing valve on the suction and discharge or liquid process tube 2 Attach gauges to the high and low sides of the system 3 Start the system and run a cooling or heating perfor mance test If tes
27. mode to COOL 3 FAN ONLY Press the Fan Only button if you want run the fan only You may want to use this feature in conjunction with the Fresh Air Exhaust if you want to bring outside air into the room or exhaust stale air 4 MoneySaver Press the MoneySaver button to activate the MoneySaver feature This cycles the fan with the compressor so that the fan does not run all the time To adjust temperature a COOLER Press the Cooler button to raise the temperature setting 6 WARMER Press the Warmer button to lower the temperature setting To adjust fan speed FAN SPEED Press the Fan Speed button to see the current set ting Press again to change the fan speed F1 is the lowest setting SLEEP SETTING F2 is low speed LOW F3 is medium MED and F4 is high HIGH To set the hour clock SET HOUR CLOCK Press Set Hour once to see the current clock set ting Continue pressing the button until you arrive at the current time MAKE SURE YOU SET THE A M AND P M PROPERLY NOTE MINUTES ARE NOT SHOWN ON THE DISPLAY A light will appear in the upper left corner of the display when the hour is A Friedrich RC1 wireless remote control can be used to operate all QuietMasters Programmable models To set the timer NOTE Set the hour clock before attempting to set timer functions You can set the timer On Off a minimum of one hour apart and a maximum of 23 hours apart 9 TIMER START Pr
28. number should be entered in the right hand column for Item 1 and this number should represent only the exposure with the largest load 2 Multiply the total square feet of all windows in the room by the applicable factor 3a Multiply the total length linear feet of all walls exposed to the outside by the applicable factor Doors should be considered as being part of the wall Outside walls facing due north should be calculated separately from outside walls facing other directions Walls which are permanently shaded by adjacent structures should be considered North Exposure Do not consider trees and shrubbery as providing permanent shading An uninsulated frame wall or a masonry wall 8 inches or less in thickness is considered Light Construction An insulated wall or masonry wall over 8 inches in thickness is considered Heavy Construction 3b Multiply the total length linear feet of all inside walls between the space to be conditioned and any uncondi tioned spaces by the given factor Do not include inside walls which separate other air conditioned rooms 4 Multiply the total square feet of roof or ceiling area by the factor given for the type of construction most nearly describing the particular application use one line only 5 Multiply the total square feet of floor area by the factor given Disregard this item if the floor is directly on the ground or over a basement 6 Multiply the number of people who normally occupy the spa
29. rating listed in Figure 1 DO NOT use an extension cord The cord provided will carry the proper amount of electrical power to the unit an extension cord will not Make sure that the receptacle is compatible with the air conditioner cord plug provided This insures proper grounding If you have a two prong receptacle you Will need to have it replaced with a grounded receptacle by a certified electrician The grounded receptacle should meet all national and local codes and ordinances Under no circumstances should you remove the ground prong from the plug You must use the three prong plug furnished with the air conditioner Test the power cord All Friedrich room air conditioners are shipped from the factory with a Leakage Current Detection Interrupter LCDI equipped power cord The LCDI device meets the UL and NEC requirements for cord connected air conditioners To test your power supply cord 1 Plug power supply cord into a grounded 3 prong outlet 2 Press RESET See Figure 2 3 Press TEST listen for click Reset button trips and pops out 4 Press and release RESET listen for click Reset button latches and remains in The power supply cord is ready for operation NOTE LCDI device is not intended to be used as a switch Once plugged in the unit will operate normally without the need to reset the LCDI device If the device fails to trip when tested or if the power supply cord is damaged it must be replaced with
30. to build in the system Then switch the system from heating to cooling Should the valve fail to shift in either position after increasing the discharge pressure replace the valve Dented or damaged valve body or capillary tubes can prevent the main slide in the valve body from shifting If you determing this is the problem replace the reversing valve After all of the previous inspections and checks have been made and determined correct then perform the Touch Test on the reversing valve FROM OUTDOOR COIL TO COMPRESSOR SUCTION TO INDOOR COIL 4 BOTH THE SAME TEMPERATURE Reversing Valve in Heating Mode TO OUTDOOR COIL TO COMPRESSOR SUCTION BOTH THE SAME TEMPERATURE 27 COOL BOTH THE SAME EMPERATURE FROM COMPRESSOR DISCHARGE Reversing Valve in Cooling Mode 33 34 Touch Test Heating Cooling Cycle WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns Proper safety procedures must be followed and proper protective clothing must be worn Failure to follow these procedures could result in minor to moderate injury The only definite indications that the slide is in the mid position is if all three tubes on the suction side of the valve are hot after a few minutes of running time NOTE A condition other than those illustrated above and on Page 31 indicate that the reversing valve is not shifting p
31. to increase to the point where it does not provide sufficient cooling for the compressor motor When this occurs the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector Continued overheating of the motor windings and or cycling of the overload will eventually lead to compressor motor or overload failure 27 28 Method Of Charging Repairs The acceptable method for charging the RAC system is the Weighed in Charge Method The weighed in charge method is applicable to all units It is the preferred method to use as it is the most accurate The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair compressor replacement or when there is no refrigerant charge left in the unit To charge by this method requires the following steps 1 Install a piercing valve to remove refrigerant from the sealedsystem Piercing valve must be removed from the system before recharging 2 Recover Refrigerant in accordance with EPA regulations WARNING BURN HAZARD Proper safety procedures must be followed gt and proper protective clothing must be worn when working with a torch oh Failure to follow these procedures could result in moderate or serious injury 3 Install a process tube to sealed system CAUTION FREEZE HAZARD Proper safety procedures must be followed and pro
32. u 11 How to Operate the QM Programmable 12 How to Use the QM Programmable Remote Control 13 T Ur 14 How to Use the Remote Control 15 How to Operate the and Twintemp se nnne nena 16 17 Testing the Electronic Control and Error Code Listings 17 18 Testing the Rotary Control 19 20 21 Component 20 21 24 Defrost Thermostat Operation 24 Electronic Control Sequence of Operation 25 Refrigeration Sequence of Operation mmm 26 Sealed Refrigeration System Repairs 27 30 Fe MRCS Component Tm 31 Reversing Valve Description Operation 32 CON 39 Checking the Reversing Valve
33. unit is clear Your air conditioner puts the conditioned air out at the top of the unit and takes in unconditioned air at the bottom Airflow is critical to good operation It is just as important on the outside of the building that the airflow around the unit exterior is not blocked Unit placement If your air conditioner can be placed in a window or wall that is shaded by a tree or another building the unit will operate even more efficiently Using drapes or blinds on the sunny side of the dwelling will also add to your unit s efficiency Insulation Good insulation will be a big help in maintaining desirable comfort levels Doors should have weather stripping Be sure to caulk around doors and windows Proper installation of seal gasket Make sure the seal gasket has been installed properly to minimize noise and improve efficiency If the seal gasket has not been installed please refer to Step 14 of the installation instructions Also if you switch from Cool mode to Fan Only and switch back to COOL mode there is a three minute delay before the compressor comes back on 11 12 How to operate the Friedrich room conditioner QuietMaster Programmable To start unit 1 If your air conditioner is installed and plugged into a proper ceptacle it is ready to go Touch Power button once The unit will automatically be in Cool mode with the temperature set at 75 24 and the fan speed at F1 the sleep se
34. used for selection of room air conditioner s Total in Item 9 X Factor from Map HEAT LOAD FORM The heat load form on the following page may be used by servicing personnel to determine the heat loss of a conditioned space and the ambient winter design temperatures in which the unit will heat the calculated space The upper half of the form is for computing the heat loss of the space to be conditioned It is necessary only to insert the proper measurements on the lines provided and multiply by the given factors then add this result for the total heat loss in BTU Hr F The BTU Hr per F temperature difference is the 70 F inside winter designed temperature minus the lowest outdoor ambient winter temperature of the area where the unit is installed This temperature difference is used as the multiplier when calculating the heat loss The graph shows the following Left Hand Scale Unit capacity BTU Hr or heat loss BTU Hr Bottom Scale Outdoor ambient temperature base point Heat Pump Model BTU Hr capacity heat pump will deliver at outdoor temperatures Maximum BTU Hr heat pump will deliver at indicated ambient temperature Balance Point Following is an example using the heat load form A space to be conditioned is part of a house geographically located in an area where the lowest outdoor ambient winter temperature is 40 F The calculated heat loss is 184 BTU Hr F Subtract 40 F lowest outdoor a
35. 11A B A E WIRING DIAGRAM COMPRESSOR SWITCH SYSTEM 5 o 2 2 o lt a o O 2 N OPTIONAL SUPPLY CORD CONFIGURATION RIBBED OR WHITE CONDUCTOR UPEL GORD BLACK CAPACITOR TO CAPACITOR BRACKET HEATER SCHEMATIC X CLOSED SWITCH LOGIC 0 OPEN HL HEATER LIMIT CAP CAPACITOR TE ee FUSE COMPR COMPRESSOR INSULATED TERMINAL MTR FAN MOTOR l GROUND LEAD OVERLOAD PROTECTOR COMBINATION TERMINAL SYS SW SYSTEM SWITCH F FLAG TERMINAL IDT INDOOR THERMOSTAT DIC DE ICE 5 CAP NUT PART NO REV HTR HEATER U 921 201 00 53 54 ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODELS ES12L33 D E EM18L34 C CAPACITUR BRACKET BLACK CONDUCTOR GREEN FROM CAPACITOR BRACKET TO CHASSIS WHITE CONDUCTOR SWITCH LOGIC SWITCH POSITION CIRCUIT 1112135 14151617181 910 10101010101010 01010 LOW JO MEDIUM COOL 10 X 10 HIGH COOL HEAT 0 X Oo x Oo x MEDIUM HEAT 10101 10 01 x 101 10 1 01 FAN ONLY 1 101010101010101010 COMPR COMPRESSOR MTR FAN MOTOR OVERLOAD PROTECTOR ES16L33 C D EM24L34 B WIRING DIAGRAM COMPRESSOR
36. 35 377 S 134 128 17800 17600 230 208 8188 1780 1760 10 0 10 0 44 400 M 167 161 23500 23000 230 208 112 7221 247 000 9 5 9 5 7 0 400 M 160154 28000 27700 230 208 130042 2947 2916 9 5 9 5 8 8 600 L 207 201 36000 35700 230 208 180198 4235 4200 8 5 8 5 11 0 725 L 226220 9200 7400 115 14 767 6 9 733 12 0 3 0 17 300 S 12700 12500 1100010500 230 208 5 56 1149 1131 53 58 1185 1167 110 1010 25 26 3 5 325 5 12 17 18000 18000 16800 16400 230 208 85 95 1895 1895 8590 1867 1822 95 95 28 29 47 400 M 170 166 24000 24000 22000 21600 230 208 109720 2400 2400 1101720 2444 2400 10 0 10 0 2 7 2 8 10 600 L 202 198 TWINTEMP Electric Heat 7700 4000 115 6 5 733 112 1290 10 5 19 175 0 80 76 12100 11900 107008900 230 208 4850 1052 1017 160 147 35002900 115 117 29 320 S 16200 15900 107008900 230 208 74 80 1653 1656 160 47 3500 2900 9 8 9 6 17 360 120 116 17800 17600 1300010600 230 208 8188 1780 1760 195 170 4200 3500 10 0 10 0 44 400 164 160 23500 23000 1300010600 230 208 112721 2479 2121 195 170 4200 3500 9 5 9 5 70 400 160 154 EL36L35A 36000 35700 17300 14300 230 208 180 196 4235 4200 240 224 5500 4650 85 85 110 725 L 224 220 Sleeve dimensions listed on opposite page Operates on 115 volt and is not equipped with supplemental heat Will not provide heat at temperatures below 40 F Friedrich room air conditioners are designed to operate in outdoor temperatures from 50 to 115 TwinTemp He
37. BLACK TERMINAL ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR SYSTEM RED SWITCH ALTERNATE COMPRESSOR NE HARNESS OVERLOAD PROTECTOR xp RESSON MS ROCKER SWITCH c CONNECTOR GREEN YELLOW TO INNERWALL MOTOR MOUNT GREEN OR IRAN 4 0 SCHEMATIC AOR 63 7 12 MEDIUM LEGEND HEATER HEATER LIMIT THERMAL FUSE TF I GROUND LEAD e COMBINATION TERMINAL PLASTIC INSULATOR PART NO REV 921 007 00 ANTICIPATOR RESISTOR HTR MONEY SAVER ROCKER SWITCH HL CAPACITOR INDOOR THERMOSTAT O ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODELS EL36L35A D A E SYSTEM SWITCH YELLOW BLACK CONDUCTOR MS SUPPLY CORD WHITE CONDUCTOR FN 8 GREEN YELLOW TO 1 MS 5 NO 10 O MEDIUM COOL 10 X 10 x o HIGH COOL Jojoj xjo xjo xj Jo xj o HIGH HEAT Jojo xjojoj xjo x o x MEDIUM HAT 101 01 1 01 FAN ONLY 1 101010101010101010 COMPRESSOR TERMINAL ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR ALTERNATE LI COMPRESSOR WIRE HARNESS BLACK COMPRESSOR OVERLOAD PROTECTOR RED IN SWITCH D DS
38. Figure 12 System Control Panel Heat Pump amp Electric Heat Models YS ES YM EM YL amp EL Twintemp Fan Only em e Off SN Low Money Saver MAX COOL Allow 3 min between restarts WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death SYSTEM CONTROL SWITCH TEST See Figure 13 Disconnect leads from control switch Turn control to position being tested There must be continuity as follows 1 Off Position no continuity between terminals 2 Lo Position between terminals and 3 C2 and us LO and M S 3 Med Position between terminals 3 2 2 M and M S Eod 4 Hi Cool Position between terminals and 3 C2 and 2 and M S AR and 5 5 Hi Heat Position between terminals and 1 C2 and 4 E 6 Med Heat Position between terminals 1 C2 and M S AR and 7 Lo Position between terminals and 1 C2 and 4 LO and M S 8 5 Fan Only Position between terminals L1 and
39. Medium Heat to maintain a desired temperature Low Cool or Low Heat for nighttime use or when demand is low Fan Only to circulate air in the room without the compressor coming on The Fan Only setting can also be used with the Exhaust air setting to remove stale air or smoke from the room or it can be used with the Fresh Air setting to bring outside air into the room especially in the spring and fall when cooling isn t necessary The Fresh Air and Exhaust controls are in the upper air discharge area The center position of this control is the normal or closed position which recirculates air for maximum performance in the cooling mode NOTE You may notice an odor when first activating the heat when the electric heat element comes on This is due to dust burning off that may have gathered on the coil during the summer This is normal Temperature control The bottom dial on the control panel is the thermostat Turn it clockwise for cooler temperature and counterclockwise for warmer Money Saver switch This rocker switch can be depressed to either Yes or No In the Yes position you will get the most economical operation Both the fan and compressor Will cycle on and off together maintaining the selected temperature at a more constant level and reducing the humidity more efficiently in the cooling mode This control will only operate when the unit is in cooling or heating mode In the No position the fan will run constantly as
40. NLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Problem Possible Cause Action Disconnect power to unit Remove resistor from t stat bulb block Plus in unit amp allow to operate Feel resistor for heat If not heat replace resistor Heat anticipator resistor shorted on applicable models Room temperature neven Wide differential partial loss of t stat bulb charge Replace t stat amp check Refer to appropriate wiring diagram Resistor is Incorrect wiring energized during ON cycle of compressor or fan Problem Possible Cause Action Incorrect wiring Refer to appropriate wiring diagram Defrost control timer motor not advancing Check for voltage at TM amp TM1 on timer If no applicable models voltage replace control If outside coil temperature is 25F or below amp preselected time limit has elapsed replace defrost control Defrost control out of calibration applicable Unit will not defrost O S If contacts remain closed between terminals 2 Defrost control contacts stuck amp 3 of the defrost control after preselected time interval has passed replace control Defrost control bulb removed from or not making Reinstall amp be assured that good bulb to coil good coil contact contact is made Problem Possible Cause Action Check if operating properly Instruct customer on proper use of control Dirty filter Clean as recommended in Owner s Manual Check hea
41. No Insulation Sq Ft x 0 33 FLOOR Area Sq Ft Above Vented Crawl space Insulated 1 oq Ft x 0 20 Uninsulated Sq Ft x 0 50 Slab on Ground Lin Ft x 1 70 1 Perimeter insulation Lin Ft x 1 00 Based on Linear Feet of outside wall TOTAL HEAT LOSS PER F BTU HR F Multiply total BTU HR F X 30 and plot on the graph below at 40 F Draw a straight line from the 70 base point thru the point plotted at 40 F The intersection of this heat loss line with the unit capacity line represents the winter design heating load Fa E 2111111 11111 1 111111111 111 11111111111111 41 11111111111 11111 1111111 1111 UNIT CAPACITY HEAT LOAD LL AMBIENT TEMPERATURE F BASE POINT Friedrich Air Conditioning Company P O Box 1540 San Antonio TX 78295 210 357 4400 wwWw friedrich com ROOM AIR CONDITIONERS LIMITED WARRANTY FIRST YEAR ANY PART any part supplied by FRIEDRICH fails because of a defect in workmanship or material within twelve months from date of original purchase FRIEDRICH will repair the product at no charge provided room air conditioner is reasonably accessible for service Any additional labor cost for removing inaccessible units and or charges for mileage related to travel by a Service Agency that exceeds 25 miles one way will be the responsibility of the owner This remedy is expressly agreed to be the exclusive remedy within twelve months from the date of the original purcha
42. OAD PROTECTOR SUPPLY CORD COMPRESSOR WIRE HARNESS WHITE CONDUCTOR BLACK CONDUCTOR TO CAPACITOR BRACKET BROWN MOTOR WIRE 55 gy CAPACITOR GREEN OR TO CAPACITOR FAN GREEN YELLOW BRACKET MOTOR To INNERWALL CONNECT TO CHASSIS MOTOR MOUNT SCHEMATIC NEUTRAL L1 115 V N COMPRESSOR 0 0 D ELECTRONIC CONTROL CAP X CLOSED SWITCH LOGIC X CLOS SWITCH POSITION CIRCUIT __ CAP CAPACITOR orr n COMBINATION TERMINAL HI COOL OVLD OVERLOAD PROTECTOR I GROUND LEAD MED COOL 10101 COMMON LOW COOL io S START R PART NO REV RUN 921 200 00 ELECTRONIC CONTROL COOL ONLY MODELS SSO8L10 E F G SS10L10 D E 5512110 SS14L10 D E S12L30 E F 16130 0 SM18L30A D A E SM21L30 E F SM24L30 C D WIRING DIAGRAM ELECTRONIC CONTROL 7 WHITE OVERLOAD BLACK PROTECTOR ALTERNATE 4 COMPRESSOR COMPRESSOR WIRE HARNESS BLACK CONDUCTOR SUPPLY A BLACK GREEN YELLOW TO CAPACITOR GREEN OR BRACKET TO CAPACITOR GREEN DR BRACKET TERMINAL ORIENTATION FAN GREEN YELLOW TO INNERWALL TERMINAL MARKINGS MDUNT a 5 A I 2 SCHEMATIC NEUTRAL 115 V L2 230 208
43. PUMP SYSTEM COOLS WHEN HEATING IS DESIRED Is Line Voltage Is the Selector Switch Present at the Solenoid Set for Heat Is the Solenoid Coil Good n Replace the Solenoid Coil Reversing Valve Stuck Replace the Reversing Valve 47 48 TROUBLESHOOTING TOUCH TEST CHART TO SERVICE REVERSING VALVES NORMAL FUNCTION OF VALVE NOTES VALVE OPERATING COIL RIGHT Pilot Capillary Tube LEFT Pilot Capillary Tube CONDITION TEMPERATURE OF VALVE BODY WARMER THAN VALVE BODY 21 3 POSSIBLE CAUSES CORRECTIONS MALFUNCTION VALVE No voltage to coil DISCHARGE TUBE from Compressor SUCTION TUBE to Compressor Tube to INSIDE Tube to OUTSIDE COIL Normal Heating Repair electrical circuit Check Electrical circuit and coil Defective coil Replace coil Low charge Repair leak recharge system Check refrigeration charge Recheck system Valve will not shift from cool to heat H H Valve will not shift from cool to heat H W Starts to shift N but does not complete reversal Raise head pressure operate solenoid If no shift use valve with smaller ports Apparent leap in heat ing ot ot ot ot ot ot ot ot ot t Ho Hot Cool Pressure differential too high Deenergize solenoid raise head pressure reenergize solenoid to break dirt loose Cool Hot i If
44. See Figure 17 This thermostat is single pole double throw cross ambient with a range of 60 to 92 F and a differential of 2 F Terminal 2 15 common Figure 17 Thermostat EQ Model A WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death TEST 1 Remove leads from thermostat 2 Turn thermostat knob clockwise to its coldest position 3 Testfor continuity between the two terminals Contacts should be closed 4 Turn thermostat knob counterclockwise to its warmest position 5 for continuity contacts should be open NOTE The thermostat must be within the temperature range listed to open and close To maintain the comfort level desired a cross ambient type thermostat is used The thermostat has a range from 60 2 F to 92 3 F The thermostat bulb is positioned in front of the evaporator coil to sense the return air temperature Thermostat malfunction or erratic operation is covered in the troubleshooting section of this manual THERMOSTAT Models ES YS EM YM EL YL A cross ambient thermostat is used on all heat pump and electric heat units In addition to cycling the unit in a heating or cooling operation the thermostat will terminate the cooling cycle in the event ice forms on the evaporator coil in this case the thermostat functions as a de ice control A resistor anticipator is posi
45. Single Phase Resistance Test A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Remove the leads from the compressor terminals and set the ohmmeter on the lowest scale R x 1 Touch the leads of the ohmmeter from terminals common to start C to 75 Next touch the leads of the ohmmeter from terminals common to run C to R Add values to S and C to together and check resistance from start to run terminals 57 to Resistance S to R should equal the total of C to S and C to In a single phase PSC compressor motor the highest value will be from the start to the run connections S to R The next highest resistance is from the start to the common connections S to The lowest resistance is from the run to common C to R Before replacing a compressor check to be sure it is defective GROUND TEST Use an ohmmeter set on its highest scale Touch one lead to the compressor body clean point of contact as a good connection is a must and the other probe in turn to each compressor terminal If a reading is obtained the compressor is grounded and must be replaced Check the complete electrical system to the compressor and compressor internal electrical system
46. TVB Piston needle on end of slide leaking Operate vaye SOVETA UMES as 1 as 2 If excessive leak replace valve cool 19 Cool wv Pilot needle and piston needle leaking OPerate valve several times then recheck as 1 as 2 If excessive leak replace valve Hot Cool TVB TVB Pressure differential too high Stop unit Will reverse during equalization as 1 as 2 period Recheck system Raise head pressure operate solenoid to free dirt If still no shift replace valve Raise head pressure operate solenoid Hot Cool Remove valve and wash out Check on air 26 1 2 TVB Dirt in bleeder hole before reinstalling if no movement replace Will not shift valve Add strainer to discharge tube Mount valve horizontally Hot Cool as 1 as 2 Hot Cool as 1 as 2 Warm Cool Mili 2 27 from heat to cool Stop unit After pressures equalize restart with solenoid deenergized If valve shifts Piston cup leak reattempt with compressor running If it still will not reverse while running replace the valve Hot Hot Hot Hot Hot Defective pilot Replace valve TVB Defective compressor Replace compressor ELECTRONIC CONTROL COOL ONLY MODELS XQ05L10A C XQO06L10A C XQO08L10A B A E XQ10L10A C XQ12L10A B A C COMPRESSOR COMPRESSOR WIRING DIAGRAM ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR OVERL
47. This control is dual purpose control that acts as an outdoor thermostat and defrost control When the sensing bulb attached to the outdoor coil senses enough icing on the outdoor coil it will interrupt power to the compressor and supply power to the heating element until the coil temperature reaches above 43 then the heater will shut off and the unit will resume operating in the reverse cycle mode When the outdoor coil temperature drops below 20 the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43 The fan motor will not turn off when defrost occurs and the 4 way valve will not reverse Figure 21 Defrost Thermostat Heat Pump Models DEFROST BULB LOCATION Heat Pump Models Only See Figure 22 The defrost control bulb must be mounted securely and in the correct location to operate properly Figure 22 Defrost Thermostat Bulb Location All Heat Pump Models Retainer Slide the bulb end of the thermostat defrost under the retainer as shown 22 23 COMPONENTS TESTING Continued FAN MOTOR A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan A self resetting overload is located inside the motor to protect against high temperature and high amperage conditions See Figure 23 WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning
48. a new supply cord from the manufac turer We recommend you contact our Technical Assistance Line at 800 541 6645 ext 845 To expedite service please have your model and serial number available WARNING ELECTRICAL SHOCK HAZARD Make sure your electrical receptacle has the same configuration as your air conditioner s plug If different consult a Licensed Electrician Do not use plug adapters Do not use an extension cord Do not remove ground prong Always plug into a grounded 3 prong outlet Failure to follow these instructions can result in electrical shock serious injury or death pubis ces REQUIRED WALL RECEPTACLE MODEL FUSE 508 5510 5512 5514 KS12 KS15 509 05 13 125 5 15 XQ06 XQ08 XQ12 2008 5912 5516 SM18 SM24 5128 24 5136 YM18 YL24 Figure 1 NOTE Your LCDI device will resemble one of these illustrations WARNING TEST BEFORE EACH USE 1 PRESS RESET BUTTON PLUG LDCI INTO POWER RECEPTACLE PRESS TEST BUTTON RESET BUTTON SHOULD POP UP 4 PRESS TEST BUTTON DO NOT USE IF ABOVE TEST FAILS WHEN GREEN LIGHT IS ON T IS WORKING PROPERLY Figure 2 For the best cooling performance and highest energy efficiency Keep the filter clean Make sure that your air conditioner is always in top performing condition by cleaning the filter regularly Provide good air flow Make sure the airflow to and from the
49. aintenances or service property Failure to follow this notice could result in moderate or serious property damage Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death AIR FILTER Clean the unit air intake filter at least every 300 to 350 hours of operation Clean the filters with a mild detergent in warm water and allow to dry thoroughly before reinstalling COILS AND BASE PAN WARNING EXCESSIVE WEIGHT HAZARD Do not use a caustic coil cleaning agent on coils or base Use two people to lift or carry the unit and wear pan Use a biodegradable cleaning agent and degreaser proper protective clothing to prevent damage to the coil and or base pan Failure to do so may result in personal injury WARNING CUT SEVER HAZARD Be careful with the sharp edges and corners Wear protective clothing and gloves etc Failure to do so could result in serious injury The indoor coil evaporator coil the outdoor coil condenser coil and base pan should be inspected periodically yearly or bi yearly and cleaned of all debris lint dirt leaves paper etc Clean the coils and base pan with a soft brush and compressed air or vacuum If using a pressure washer be careful not to bend the aluminium fin pack Use a sweeping up and down motion in the direction of the vertical aluminum fin pack when pressure cleaning coils Cover al
50. alified assistant if possible Capacitors even when disconnected from the electrical power source retain an electrical charge potential capable of causing electric shock or electrocution e Handle discharge and test capacitors according to safe established standards and approved procedures e Extreme care proper judgment and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipment with the power on to the unit Do not spray or pour water on the return grille discharge grille evaporator coil control panel and sleeve on the room side of the air conditioning unit while cleaning Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on even after the exterior is dry Never operate the A C unit with wet hands Use air conditioner on a single dedicated circuit within the specified amperage rating Use on a properly grounded outlet only Do not remove ground prong of plug Do not cut or modify the power supply cord Do not use extension cords with the unit Follow all safety precautions and use proper and adequate protective safety aids such as gloves goggles clothing adequately insulated tools and testing equipment etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death REFRIGERATION SYSTEM HAZARDS Use
51. an be purchased from your Friedrich dealer 15 16 How to operate the Friedrich room air conditioner QuietMaster Twintemp models To start unit If your air conditioner is installed and plugged into a properly grounded receptacle it is ready to operate Mode control QuietMaster The upper dial Figure 7 allows you to select cooling at four different speeds as well as Fan Only Models SL28 and SL36 only have three cooling speeds Off to turn the unit off High Cool for quick cooling Medium Cool to maintain a desired temperature Low Cool when cooling demand is low Sleep Setting for nighttime use or when cooling demand is low Fan Only to circulate air in the room without the compressor coming on The Fan Only setting can also be used with the Exhaust air setting to remove stale air or smoke from the room or it can be used with the Fresh Air setting to bring outside air into the room This is especially useful in the spring and fall when cooling may not be necessary The Fresh Air and Exhaust controls are in the upper air discharge area The center position of this control is the normal or closed position which recirculates air for maximum performance in the cooling mode Mode control Twintemp This dial allows you to select cooling or heating at three different speeds as well as Fan Only Figure 8 Off to turn the unit off High Cool or High Heat for quick response Medium Cool or
52. approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair Do not allow liquid refrigerant to contact skin Direct contact with liquid refrigerant can result in minor to moderate injury Be extremely careful when using an oxy acetylene torch Direct contact with the torch s flame or hot surfaces can cause serious burns Make sure to protect personal and surrounding property with fire proof materials Have a fire extinguisher at hand while using a torch Provide adequate ventilation to vent off toxic fumes and work with a qualified assistant whenever possible Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks flushing etc Make sure to follow all safety precautions and to use proper protective safety aids such as gloves safety glasses clothing etc Failure to follow proper safety procedures and or these warnings can result in serious injury or death MECHANICAL HAZARDS Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around unit with moving and or rotating parts Be careful when handling and working around exposed edges and corners of sleeve chassis and other unit components especially the sharp fins of the indoor and outdoor coils Use proper and adequate protective aids such as gloves clothing safety glasses etc Failure to follo
53. articularly floors Possible Cause Defective thermistor Replace thermistor or electronic control board T stat differential too narrow Replace t stat T stat or Plenum gasket not sealing thermistor allowing discharge air to short short cycles cycle t stat Check gasket Reposition or replace as needed Clean amp advise customer of periodic cleanin Restricted coil or dirty filter 4 amp maintenance needs of entire unit Possible Cause Heat anticipator resistor wire disconnected at t stat or system Refer to appropriate wiring diagram switch Disconnect plus from outlet Remove resistor Prolonged off from bracket Insert plug 8 depress COOL cycles open amp FAN AUTOMATIC buttons Place t stat to operation warmest setting Feel resistor for temperature If no heat replace resistor Partial loss of charge in t stat bulb Replace t stat causing a wide differential Defective thermistor Replace thermistor or electronic control board Possible Cause Repair clean replace as required obstructed au Detach shroud from pan amp coil Clean 4 l Water in compressor area Outside water remove old sealer Reseal reinstall amp check leaks U h or biodegradable cleanin Obstructed condenser coil PERR M agent to clean Fan blade slinger ring improperly Adjust fan blade to 1 2 of condenser coil fin positioned pack HEAT COOL O
54. at Pump heating information shown in red indicates heat pump heating performance TwinTemp Electric Heat heating information shown in red indicates electric heat strip performance For TwinTemp Heat Pump electric heating performance refer to corresponding TwinTemp Electric Heat model Due to continuing research in new energy saving technology specifications are subject to change without notice The consumer through the AHAM Room Air Conditioner Certification Program can be certain that the AHAM Certification Seal accurately states the unit s cooling and heating capacity rating the amperes and the energy efficiency ratio INSTALLATION INFORMATION SLEEVE DIMENSIONS Thru the wall Installation Depth Shell Depthto Minimum Minimum Window Width Finished Hole with Front Louvers Extension Extension sleeve Height Width B Into Room Outside Minimum Maximum Height Width Depth 0 14 1974 21 8v 10 34 224 42 20 5 15 16 25 116 2151 8 3 16 Ac 2111 42 16 26 rR M 17 Ae 25 Ag 279 8 3e 16 Ac 211 42 18 Vs 26 19 L 20 28 33 78 16 3s 18 29 42 20 28 15 Minimum extensions when mounted in window Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation t Sleeve does not have thru the wall hole dimensions as these units are fixed chassis and should not be installed thru the wall NOTE
55. ate troubleshooting of refrigeration system problems will be more difficult and time consuming if not in some cases entirely impossible The refrigeration system uses four basic principles laws in its operation they are as follows 1 Heat always flows from a warmer body to a cooler body 2 Heat must be added to or removed from a substance before a change in state can occur 3 Flow is always from a higher pressure area to a lower pressure area 4 The temperature at which a liquid or gas changes state is dependent upon the pressure The refrigeration cycle begins at the compressor Starting the compressor creates a low pressure in the suction line which draws refrigerant gas vapor into the compressor The compressor then compresses this refrigerant raising its pressure and its heat intensity temperature Therefrigerant leaves the compressor through the discharge Line as a hot High pressure gas vapor The refrigerant enters the condenser coil where it gives up some of its heat The condenser fan moving air across the coil s finned surface facilitates the transfer of heat from the refrigerant to the relatively cooler outdoor air When a sufficient quantity of heat has been removed from the refrigerant gas vapor the refrigerant will condense i e change to a liquid Once the refrigerant has been condensed changed to a liquid it is cooled even further by the air that continues to flow across the condens
56. ator an intermittent hissing and gurgling sound indicates a low refrigerant charge Intermittent frosting and thawing of the evaporator is another indication of a low charge however frosting and thawing can also be caused by insufficient air over the evaporator Checks for an undercharged system can be made at the compressor If the compressor seems quieter than normal it is an indication of a low refrigerant charge Overcharged Refrigerant Systems Compressor amps will be near normal or higher Noncondensables can also cause these symptoms To confirm remove some of the charge if conditions improve system may be overcharged If conditions don t improve Noncondensables are indicated Whenever an overcharged system is indicated always make sure that the problem is not caused by air flow problems Improper air flow over the evaporator coil may indicate some of the same symptoms as an over charged system An overcharge can cause the compressor to fail since it would be slugged with liquid refrigerant The charge for any system is critical When the compressor is noisy suspect an overcharge when you are sure that the air quantity over the evaporator coil is correct Icing WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to
57. ature set point 2 changing mode to fan only 3 a power interruption or 4 turning the unit off The compressor is also time delayed for 3 minutes when the control is first plugged in or power is restored after failure When the compressor cycles off as a result of satisfying the load the time delay is typically timed out during the off cycle Compressor time delay is bypassed by Test Mode Return Air Temperature Sensor The control range is 60 F to 90 F 2 0 F Frost Protection Sensor Temperature settings Disable the compressor when sensing 30 3 F for 2 min continuously Enable compressor 55 5 F The fan should not be affected by the Frost Protection It should continue to function normally if freeze protection is called for COOL Mode for SS SM and XQ Models When in the COOL mode the control will turn on the compressor when the indoor temperature is 1 5 F above the set point and turn off the compressor when the ambient gets below the set point by 1 5 F The fan will run continuously MONEY SAVER Mode When in MONEY SAVER mode the system will be turned on when the indoor temperature gets above the set point by 0 75 F and turns off when the indoor temperature gets below the set point by 0 75 F The fan will turn on 5 seconds before the compressor and turn off 5 seconds after the compressor stops If the compressor is delayed the fan will continue to run while the compressor restarts If the
58. ce to be air conditioned by the factor given Use a minimum of 2 people 7 Determine the total number of watts for light and electrical equipment except the air conditioner itself that will be in use when the room air conditioning is operating Multiply the total wattage by the factor given 8 Multiply the total width linear feet of any doors or arches which are continually open to an unconditioned space by the applicable factor NOTE Where the width of the doors or arches is more than 5 feet the actual load may exceed the calculated value In such cases both adjoining rooms should be considered as a single large room and the room air conditioner unit or units should be selected according to a calculation made on this new basis Total the loads estimated for the foregoing 8 items 10 Multiply the subtotal obtained item 9 by the proper correction factor selected from the map for the particular locality The result is the total estimated design cooling load in BTU per hour For best results a room air conditioner unit or units having a cooling capacity rating determined in accordance with the NEMA Standards Publication for Room Air Conditioners CN 1 1960 as close as possible to the estimated load should be selected In general a greatly oversized unit which would operate intermittently will be much less satisfactory than one which is slightly undersized and which would operate more nearly continuously Intermittent loads such
59. ck for low running amperage Testat contacte stuck operation of t stat Replace if contacts remain closed T stat incorrectly wired Refer to appropriate wiring diagram Thermistor shorted Replace thermistor or electronic control board Possible Cause O tion S Disconnect power to unit Remove cover T stat contacts stuck of t stat amp check if contacts are stuck If so replace t stat Turn to higher temp setting to see if unit T stat set at coldest point 9 i T stat does not cycles off turn unit off 7 Refer to appropriate wiring diagrams Unit undersized for area to be Refer to industry standard sizing chart Defective thermistor Replace thermistor or electronic control board Check wiring amp connections Reconnect per wiring diagram Compressor runs continually amp does not cycle off COOLING ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Possible Gauss Aeon _ Overload inoperative Opens too Check operation of unit Replace overload if soon system operation is satisfactory Allow a minimum of 2 minutes to allow Compressor restarted before system pressures equalized pressures to equalize before attempting to restart Instruct customer of waiting period Check voltage with unit operating Check for th li ircuit Ai diti Compressor runs Low or fluctuating voltage other app ances on ir conditioner for short periods should be in separate circuit for proper voltage only Cyc
60. ction press the Timer On Off button once again light turns off Once the on and off times have been selected they will remain in memory and cycle daily until changed NOTE If the unit is unplugged or the power is interrupted the HOUR must be reset or the Timer On Off will not function when desired Automatic component protection Your unit is equipped with Automatic Component Protection To protect the compressor of the unit there is a three minute start delay if you turn the unit off or if power is interrupted The fan operation will not be affected Also if you switch from Cool mode to Fan Only and switch back to Cool mode there a three minute delay before the compressor comes back How to use the remote control models To start unit POWER Press the Power button once The unit will automatically start in the mode and fan speed it was last left on To set mode of operation 2 COOL Press the Cool button to automatically switch the operating mode to COOL 3 FAN ONLY Press the Fan Only button if you want to run the fan only 4 MoneySaver Press the MoneySaver button to activate the MoneySaver feature This feature cycles the fan with the compres sor so that the fan does not run all the time To adjust temperature setting 5 WARMER Press the Warmer button to raise the temperature setting 6 COOLER Press the Cooler button to lower the temperature setting To adjust fan
61. ctions with an electronic or Halide leak detector Recover refrigerant and repair any leaks found Repeat Step 8 to insure no more leaks are present 9 Evacuate the system with a good vacuum pump capable of a final vacuum of 300 microns or less The system should be evacuated through both liquid line and suction line gauge ports While the unit is being evacuated seal all openings on the defective compressor Compressor manufacturers will void warranties on units received not properly sealed Do not distort the manufacturers tube connections CAUTION FREEZE HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with liquid refrigerant Failure to follow these procedures could result in minor to moderate injury 10 Recharge the system with the correct amount of refrigerant The proper refrigerant charge will be found on the unit rating plate The use of an accurate measuring device such as a charging cylinder electronic scales or similar device is necessary 37 38 SPECIAL PROCEDURE IN THE CASE OF MOTOR COMPRESSOR BURNOUT WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Failure to do so may result in personal injury or death WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clot
62. ditions which could cause moderate or serious property damage Read understand and follow the above warning Wire Size Use ONLY wiring size recommended for single outlet branch circuit Fuse Circuit Breaker Use ONLY the correct HACR type and size fuse circuit breaker Read electrical ratings on unit s rating plate Proper circuit protection is the responsibiity of the homeowner Grounding Unit MUST be grounded from branch circuit through service cord to unit or through separate ground wire provided on permanently connected units Be sure that branch circuit or general purpose outlet is grounded The field supplied outlet must match plug on service cord and be within reach of service cord Do NOT alter the service cord or plug Do NOT use an extension cord Refer to the table above for proper receptacle and fuse type SORT ERENS The consumer through the Room Air Conditioner Certification Program can be certain that Certification Seal accurately states the 5 cooling and C heating capacity rating the amperes and the energy efficiency ratio 0 HACR Heating Conditioning and Refrigeration WARNING Before operating your unit Make sure the wiring is adequate for your unit If you have fuses they should be of the time delay type Before you install or relocate this unit be sure that the amperage rating of the circuit breaker or time delay fuse does not exceed the amp
63. e does not run windings Open overload Test overload protector amp replace if inoperative Open capacitor Test capacitor amp replace if inoperative Test for continuity in all positions Replace if Inoperative system switch inoperative Refer t iate wiring di to check Broken loose or incorrect wiring divini tie Possible Cause Inoperative system switch Test switch amp replace if inoperative Broken loose or incorrect wiring Refer to applicable wiring diagram Fan motor Open capacitor Test capacitor amp replace if inoperative does not run Fan speed switch open Test switch amp replace if inoperative Test fan motor 4 replace if inoperative be sure Inoperative fan motor internal overload has had time to reset Possible Cause Undersized unit Refer to industry standard sizing chart Set coldest position Test t stat amp replace if T stat open or inoperative necessary Dirty filter Clean as recommended in Owner s Manual Dirty or restricted condenser or Use pressure wash or biodegradable cleaning Does not cool or evaporator coil agent to clean only cools slightly Adjust discharge louvers Use high fan speed Fresh air or exhaust air door open Close doors Instruct customer on use of this on applicable models feature Low capacity undercharge Check for leak amp make repair 0860 Check amperage draw against nameplate If conclusive make pressure test
64. er coil The RAC design determines at exactly what point in the condenser the change of state i e gas to a liquid takes place In all cases however the refrigerant must be totally condensed changed to a Liquid before leaving the condenser coil Suction Line Ka t Evaporator Coil Metering Device Refrigerant Strainer Refrigerant Drier The refrigerant leaves the condenser Coil through the liquid line as a warm high pressure liquid It next will pass through the refrigerant drier if so equipped It is the function of the driertotrap any moisture presentinthe system contaminants and large particulate matter The liquid refrigerant next enters the metering device The metering device is a capillary tube The purpose of the metering device is to meter i e control or measure the quantity of refrigerant entering the evaporator coil In the case of the capillary tube this is accomplished by design through size and length of device and the pressure difference present across the device Since the evaporator coil is under a lower pressure due to the suction created by the compressor than the liquid line the liquid refrigerant leaves the metering device entering the evaporator coil As it enters the evaporator coil the larger area and lower pressure allows the refrigerant to expand and lower its temperature heat intensity This expansion is often referred to as boiling Since the uni
65. erant charge actually introduced into the system 5 Facilities for flowing nitrogen through refrigeration tubing during all brazing processes Proper refrigerant charge is essential to proper unit operation Operating a unit with an improper refrigerant charge will result in reduced performance capacity and or efficiency Accordingly the use of proper charging methods during servicing will insure that the unit is functioning as designed and that its compressor will not be damaged Too much refrigerant overcharge in the system is just as bad if not worse than not enough refrigerant undercharge They both can be the source of certain compressor failures if they remain uncorrected for any period of time Quite often other problems such as low air flow across evaporator etc are misdiagnosed as refrigerant charge problems The refrigerant circuit diagnosis chart will assist you in properly diagnosing these systems An overcharged unit will at times return liquid refrigerant slugging back to the suction side of the compressor eventually causing a mechanical failure within the compressor This mechanical failure can manifest itself as valve failure bearing failure and or other mechanical failure The specific type of failure will be influenced by the amount of liquid being returned and the length of time the slugging continues Not enough refrigerant undercharge on the other hand will cause the temperature of the suction gas
66. es including the TEST mode The display can be changed back to SET temperature by pressing any key except the ON OFF button or after 10 seconds has elapsed Activating Test Mode Activate test mode by pressing at the same time the MODE button and the TEMP v button on XQ models LEDs for Hour Start and Stop will blink 1 bps while Test Mode is active Activate test mode by pressing at the same time the SAVER button and the CHECK FILTER button on QME models LED for the Filter Alert will blink 1 bps while Test Mode is active Twintemp FIGURE 9 Quietilaster 06 RAMMABLE PM ay m Set Check Hour Filter Press to reset Power gt Fan Cool Saver Only gt 1 4 Smart Speed Fan e A C A C Timer Stop Start On Off 9 suanr CENTER FIGURE 11 Test Mode has duration of 90 minutes Test Mode can be activated under any conditions including Off Test Mode is cancelled by pressing the On Off button unplugging the unit or when the 90 minutes is timed out All settings revert to the factory default settings of Cool 75 degrees F Timer and Set Hour features are nonfunctional Test Mode overrides the three minute lockout all delays for compressor and fan motor start speed change and no delay when switching modes Test Mode default settings are ON Money Saver 60 degrees F and High fan speed 17 18 Activating Error Code M
67. ess Startto view the current start time for cool ing Continue pressing the Start button until you arrive at the start time you desire The start time for cooling will then be set TIMER STOP Press the Stop button Continue pressing the Stop button until you arrive at the stop time you desire The stop time for cooling will then be set 1 TIMER ON OFF Press the On off button once to activate light on or deactivate light off the timer Once the Start and Stop times have been selected they will remain in memory and cycle daily until changed NOTE Ifthe unitis unplugged or the power is interrupted the HOUR CLOCK must be reset or the Timer On off functions will not work Figure 4 rriedrich Temperature Cooler IA Warmer Only Speed Timer Operation On Off Start Stop 5 4 8 10 13 14 How to operate the Friedrich room conditioner models To start unit If your air conditioner is installed and plugged into a proper receptacle it is ready to go The first time the unitis started the compressor will delay for three minutes See Automatic Component Protection on the following page 1 Touch the Power button once The unit will automatically be in Cool mode with the temperature set at 75 F 24 C and the fan speed at F1 the sleep setting To set mode of operation When you first turn the unit on it will be in the Cool mode light on with constant fan
68. et the A C Start and A C Stop timer a minimum of one hour apart and a maximum of 23 hours apart 13 TIMER STOP Press the Stop button and continue pressing until the hour you want the unit to shut off appears in the display A M or P M The stop time for cooling will then be set START TIME Press A C Start to view the current start time for cooling Continue pressing until the hour you want the unit to start appears in the display A M or P M The start time for cooling will then be set 15 Press the Timer On button once to activate light on the timer function Touch Timer On Off again light off to cancel the timer function if you so desire Once the on and off times have been se lected they will remain in memory and cycle daily until changed NOTE If unit is unplugged or power is interrupted the Set Hour button must be reset or the Timer On Off functions will not work Automatic component protection Your unit is equipped with Automatic Component Protection To protect the compressor of the unit there is a three minute time delay if you turn the unit off or if power is interrupted The fan will not be affected How to use the remote control QuietMaster Programmahle To start unit POWER Press the Power button once The unit will automatically turn on in the mode and fan speed it was last left on To set mode of operation 2 COOL Press the Cool button to automatically switch the operating
69. follow these procedures could result in serious injury or death A check of the amperage drawn by the compressor motor should show a lower reading Check the Unit Specification After the unit has run 10 to 15 minutes check the gauge pressures Gauges connected to system with an undercharge will have low head pressures and substantially low suction pressures Compressor Reversing Compressor Running Quieter than Normal Amps Lower Accumulator Suction Pressure Indoor Coil Much Lower Undercharged System of the evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to system will usually have higher head pressure depending upon amount of over charge Suction pressure should be slightly higher Accumulator Suction Pressure Noticeably High Compressor Slugged with Refrigerant Overcharged System 29 30 Restricted Refrigerant System Troubleshooting a restricted refrigerant system can be difficult The following procedures are the more common problems and solutions to these problems There are two types of refrigerant restrictions Partial restrictions and complete restrictions A partial restriction allows some of the refrigerant to circulate through the system With a complete restriction there is no circulation of refrigerant in the system Restricted refrigerant systems display the same symptoms as a low charge condition When the u
70. fthe pilot valve capillary 15 common return line from these ports to the suction tube on the main valve body Four way reversing valves also have a capillary tube from the compressor discharge tube to the pilot valve The piston assembly in the main valve can only be shifted by the pressure differential between the high and low sides of the system The pilot section of the valve opens and closes ports for the small capillary tubes to the main valve to cause it to shift NOTE System operating pressures must be near normal before valve can shift FROM VALVE DISCHARGE 4 WAY REVERSING VALVE TESTING THE WARNING ELECTRIC SHOCK HAZARD Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle Turn off high voltage electrical power to unit Unplug line voltage lead from reversing valve coil Check for electrical continuity through the coil If you do not have continuity replace the coil 4 Check from each lead of coil to the copper liquid line as it leaves the unit or the ground lug There should be no continuity between either of the coil leads and ground if there is coil is grounded and must be replaced 5
71. gerant flow chart This directs the refrigerant through the filter drier and cooling capillary tube to the indoor coil In the heating mode of operation high pressure refrigerant enters the check valve from the opposite direction closing the port liquid line to the outdoor coil The flow path of the refrigerant is then through the filter drier and heating capillary to the outdoor coil WARNING CUT SEVER HAZARD Be careful with the sharp edges and corners Wear protective clothing and gloves etc Failure to do so could result in serious injury 3 Switch the unit to the heating mode and observe the gauge readings after a few minutes running time If the system pressure is lower than normal the heating capillary is restricted 4 Ifthe operating pressures are lower than normal in both the heating and cooling mode the cooling capillary is restricted Failure of the slide in the check valve to seat properly in either mode of operation will cause flooding of the cooling coil This is due to the refrigerant bypassing the heating or cooling capillary tube and entering the liquid line COOLING MODE In the cooling mode of operation liquid refrigerant from condenser liquid line enters the cooling check valve forcing the heating check valve shut The liquid refrigerant is directed into the liquid dryer after which the refrigerant is metered through cooling capillary tubes to evaporator Note liquid refrigerant will al
72. hing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death WARNING EXPLOSION HAZARD The use of nitrogen requires a pressure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures result in serious injury or death 1 Recover all refrigerant and oil from the system 2 Remove compressor capillary tube and filter drier from the system 3 Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent Use approved flushing agent to remove all contamination from system Inspect suction and discharge line for carbon deposits Remove and clean if necessary Ensure all acid is neutralized 4 Reassemble the system including new drier strainer and capillary tube 9 Proceed with step 8 10 on previous page ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING AND SERVICE Basically troubleshooting and servicing rotary compres sors is the same as on the reciprocating compressor with only one main exception NEVER under any circumstances charge a rotary com pressor through the LOW side Doing so would cause permanent damage to the new compressor ROUTINE MAINTENANCE WARNING NOTICE ELECTRIC SHOCK HAZARD Units are to be inspected and serviced by qualified service Turn off electric power before inspections personnel only Use proper protection on surrounding m
73. in to all models TYPICAL UNIT COMPONENTS Fresh Air Compressor Capillary Tube Liquid Filter Driers Reversing Valve some models Condenser Coil E Discharge Air System Switches Outdoor Grille e 2 111 E tor Coil NW Ww vaporator Coi 3 i b s T 2 1 AA Sleeve Return Air Grille Filter Blower Wheel Blower Motor wei gt Condenser Fan Blade Basepan IMPORTANT It will be necessary for you to accurately identify the unit you are servicing so you can be certain of a proper diagnosis and repair See Unit Identification on page 6 UNIT IDENTIFICATION Model Number Code SS08L 10 E Digit Engineering Major change 1st Digit Function Straight Cool Value Series Y Heat Pump E Electric Heat Straight Cool Straight Cool X 7 Straight Cool 7th Digit Options 0 Straight Cool amp Heat Pump Models 1 1 KW Heat Strip Nominal 3 3 KW Heat Strip Nominal 4 4 KW Heat Strip Nominal 5 5 KW Heat Strip Nominal 2nd Digit Q Q Star Small Chassis M Medium Chassis Large Chassis HazardGard Digit Voltage 1 115 Volts 3 230 208 Volts 5th Digit 3rd and 4th Digit Approximate Alphabetical Modifier BTU HR in 1000s Cooling Heating BTU Hr capacity listed in the Specification Performance Data Section RAC Serial Number Identifica
74. ing any key button except for the On Off button The indoor temperature can be viewed in all modes including test mode Check Filter The Check Filter indicator turns on after the fan motor has been operating for 250 hours The Check Filter indicator is reset by pressing the Check Filter button one time only Power failures will not reset the 250 hour timer All time elapsed is stored in memory and resumes counting after power is restored Keep Alive The electronic control has a memory to retain all functions and status as set up by the user in the event of a power failure Once power is restored to the unit there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated providing that the mode was set for cooling and the set point temperature has not been met in the room TESTING THE ROTARY CONTROL SWITCHES Heat Pump amp Electric Heat Models See Figure 12 An eight position control switch is used to regulate the operation of the fan motor and compressor The compressor can be operated with the fan operating at low medium or high speed in the cooling or heating mode The fan motor can also be operated independently on medium speed See switch section as indicated on decorative control panel NOTE Heat pump models with electric heat in the heat position heating element only will be energized when outdoor temperature is below the operating range of the heat pump
75. ired comfort level For example if the outside doors in your home are opened for an extended period of time or more people enter a room Smart Fan may adjust to a higher fan speed to compensate for the increased heat load This keeps you from having to adjust the fan speed on your own Figure 5 9 Money Saver e ap Fan Only 89 Clock Timer Set Start Time On Off Hour Stop Time To set the hour clock Touch the Set Hour button to see the current setting clock light comes on The number that is displayed is the approximate time hour only Use the A and buttons to change the settings BE SURE TO SET A M AND P M ACCORDINGLY P M is indicated by a red light in the upper left corner of the display To set the timer NOTE Set the HOUR CLOCK before attempting to set timer functions You can set the START and STOP times a minimum of one hour apart and a maximum of twenty three hours apart 11 After setting the time press the Set Hour button once Start light comes on Use the A and V buttons to select the time that the unit will START 2 After selecting the START time press the Set Hour button once Stop light comes on Use the A and buttons to select the time that the unit will STOP After selecting the stopping time press the Set Hour button once 13 Press the Timer On Off button light turns on to activate the timer function To deactivate this fun
76. irty evaporator coil Use pressure wash Condensation on discharge grille or biodegradable cleaning agent to clean louvers Environmental phenomena point supply louvers upward Chassis gasket not installed Install gasket per Installation manual Downward slope of unit is too Refer to installation manual for proper steep inward installation Noisy operation the room 43 44 COOLING ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Possible Cause Sublimation Ensure that foam gaskets are installed in When unconditioned saturated between window panes amp in between the outside air mixes with conditioned unit amp the sleeve Also ensure that fresh air condensation forms on the air exhaust vents on applicable models are in Water spitting cooler surfaces the closed position amp are in tact into room Follow installation instructions to ensure that D itch of i llation i ane 5 downward pitch of installed unit is less than 1 4 amp 3 8 Clean 8 advise customer of periodic cleanin Restricted coil or dirty filter 3 9 amp maintenance needs of entire unit Problem Possible Cause Action Insufficient air circulation thru area Adjust louvers for best possible air circulation to be air conditioned Excessive yp Oversized unit Operate in MoneySaver position Inadequate vapor barrier in building Advise customer structure p
77. ize solenoid to break loose If valve fails to make complete shift replace valve Reversing valve failing to shift completely bypassing hot gas TROUBLESHOOTING CHART HEATPUMP REFRIGERANT SYSTEM DIAGNOSIS COOLING CYCLE LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across Indoor Coil Indoor Coil Restriction Outdoor Coil Refrigerant System Reversing Valve not Reversing Valve not Overcharged Restriction Fully Seated Fully Seated Undercharged Overcharged Undercharged Noncondensables air in System Moisture in System Defective Compressor Defective Compressor 46 TROUBLESHOOTING CHART REFRIGERANT SYSTEM DIAGNOSIS HEATING CYCLE LOW SUCTION PRESSURE HIGH SUCTION PRESSURE LOW HEAD PRESSURE HIGH HEAD PRESSURE Low Airflow Outdoor Ambient Too High Refrigerant System Outdoor Ambient Too High Across Outdoor Coil for Operation in Heating Restriction For Operation In Heating Refrigerant System Reversing Valve not Reversing Valve not Low Airflow Across Restriction Fully Seated Fully Seated Indoor Coil Undercharged Overcharged Undercharged Overcharged Noncondensables Moisture in System Defective Compressor Defective Compressor in System ELECTRICAL TROUBLESHOOTING CHART HEAT PUMP HEAT
78. l Capacitor Reduces line current and steadies the voltage supply while greatly improving the torque characteristics of the fan motor and compressor motor Defrost thermostat Heatpumps only A dual purpose control that acts as an outdoor thermostat and defrost control Smart Fan Automatically adjusts the fan speed to main tain the desired room temp MoneySaver switch When engaged it sends the power supply to the fan motor through the thermostat which allows for a cycle fan operation Fan Motor Dual shafted fan motor operates the indoor blower wheel and the condenser fan blade simultaneously Solenoid Used to energize the reversing valve on all heat pump units Heating element Electric resistance heater available in 3 3 4 0 or 5 2 kW on select TwinTemp models Heat anticipator Used to provide better thermostat and room air temperature control HERMETIC COMPONENTS Compressor Motorized device used to compress refrigerant through the sealed system Reversing valve A four way switching device used on all heat pump models to change the flow of refrigerant to permit heating or cooling Check valve A pressure operated device used to direct the flow of refrigerant to the proper capillary tube during either the heating or cooling cycle Capillary tube A cylindrical meter device used to evenly dis tribute the flow of refrigerant to the heat exchangers coils 21 COMPONENTS TESTING THERMOSTAT EQ08 Models
79. l electrical components to protect them from water or spray Allow the unit to dry thoroughly before reinstalling it in the sleeve BLOWER WHEEL HOUSING CONDENSER FAN SHROUD Inspect the indoor blower housing evaporator blade condenser fan blade and condenser shroud periodically yearly or bi yearly and clean of all debris lint dirt mold fungus etc Clean the blower housing area and blower wheel with an antibacterial antifungal cleaner Use a biodegradable cleaning agent and degreaser on condenser fan and condenser shroud Use warm or cold water when rinsing these items Allow all items to dry thoroughly before reinstalling them ELECTRONIC ELECTRICAL MECHANICAL Periodically at least yearly or bi yearly inspect all control components electronic electrical and mechanical as well as the power supply Use proper testing instruments voltmeter ohmmeter ammeter wattmeter etc to perform elec trical tests Use an air conditioning or refrigeration thermometer to check room outdoor and coil operating tempera tures Use a sling psychrometer to measure wet bulb temperatures indoors and outdoors Inspect the surrounding area inside and outside to ensure that the unit s clearances have not been compromised or altered 39 ROUTINE MAINTENANCE Continued NOTICE Do not drill holes in the bottom of the drain pan or the underside of the unit Not following this notice could result in damage to the unit or condensate wa
80. les on amp fused separately overload Refer to appropriate wiring diagram of correct rating Restricted or low air flow through Check for proper fan speed or blocked condenser coil or evaporator coil coils Compressor running abnormally Check for kinked discharge line or restricted hot condenser Check amperage Possible Cause ________ _____ Place jumper across t stat terminals to check if Loss of charge in t stat bulb 1 4 unit operates unit operates replace t stat Loose or broken parts in t stat Check as above turn unit on _ Incorrect wiring Refer to appropriate wiring diagram Defective thermistor Replace thermistor or electronic control board Possible Cause Refer to Installation Manual for proper Poorly installed did installation Fan blade striking chassis Reposition adjust motor mount Check that compressor grommets have not Compressor vibrating deteriorated Check that compressor mounting parts are not missing Improperly mounted or loose Check assembly amp parts for looseness cabinet parts rubbing amp rattling Problem Possible Cause Action Evaporator drain pan overflowing Clean obstructed drain trough Evaporator drain pan broken or cracked Condensation forming on base pan Reseal or replace No chassis gasket installed Install chassis gasket Poor installation resulting in rain Check installation instructions Reseal as entering the room required D
81. long as the unit is in the cooling or heating mode NOTE The 509 is a 115 volt model and does not provide adequate heat below 37 F 3 This product is designed for warm climate applications QuietiTlaster IR Sleep Setting e Low Cool Money Saver MAX Figure 7 Allow 3 min between restarts Twintemp Money Saver MAX COOL Figure 8 Allow 3 min between restarts 08 models Function Control The left knob is a six position control that allows you to select heat or cool in either low speed or high speed Plus you can select fan only if you wish Function Control The right hand knob is the thermostat turn it clockwise for cooler counter clockwise for warmer See Figure 9 PM 7 Stal ic Power _a Clock Timer Set Start Time On Off Hour Stop Time Fan Only Money Saver Temp Hour FIGURE 10 TESTING THE ELECTRONIC CONTROL BOARDS FOR QME amp XQ MODELS Checking Room Temperature Check the room temperature at the electronic control pad by pressing the FAN SPEED button and the temperature UP button atthe sametime on XQ models NO Check the room temperature at the electronic control pad by pressing at the same time the FAN SPEED button and the TEMP button on QME models The indoor temperature will display for 10 seconds Indoor temperature can be viewed in all mod
82. mbient temperature for the geographical location from 70 F inside design temperature of the unit for a difference of Multiply 184 by 30 for a 5500 BTU Hr total heat loss for the calculated space On the graph plot the base point 70 and a point on the 40 F line where it intersects with the 5500 BTU Hr line on the left scale Draw a straight line from the base point 70 through the point plotted at 40 F This is the total heat loss line Knowing that we have a 5500 BTU Hr heat loss and we expect that our heat pump will maintain a 70 F inside temperature at 40 F outdoor ambient we plot the selected unit capacity BTU Hr of the unit between 35 and 60 on the graph and draw a straight line between these points Where the total heat loss line and the unit capacity line intersect read down to the outdoor ambient temperature scale and find that this unit will deliver the required BTU Hr capacity to approximately 61 HEATING LOAD FORM FRIEDRICH ROOM UNIT HEAT PUMPS BTU HR PER WALLS Linear Feet F TEMP DIFFERENCE 2 Insulation Lin Ft x 1 6 Average Lin Ft x 2 6 WINDOWS DOORS Area sq ft Single Glass Sq Ft x 1 13 Double Glass Sq Ft x 0 61 INFILTRATION WINDOWS amp DOORS AVG Lin Ft x 1 0 Loose Lin Ft x 2 0 CEILING Area Sq Ft Insulated 67 54 Ft x 0 07 Insulated 2 Sq Ft x 0 10 Built up Roof 2 insulated Sq Ft x 0 10 Built up Roof 1 2 insulated Sq Ft x 0 20
83. n of consequential or incidental damages so the foregoing exclusions and limitations may not apply to you OTHER This warranty gives you specific legal rights and you may also have other rights which vary from state to state PROOF OF PURCHASE Owner must provide proof of purchase in order to receive any warranty related services All service calls for explaining the operation of this product will be the sole responsibility of the consumer All warranty service must be provided by an Authorized FRIEDRICH Service Agency unless authorized by FRIEDRICH prior to repairs being made 10 08 5 TECHNICAL SUPPORT CONTACT INFORMATION rriedrich FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 San Antonio Texas 78295 1540 4200 Pan Am Expressway San Antonio Texas 78218 5212 210 357 4400 FAX 210 357 4490 www friedrich com Printed in the U S A rredrich FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 San Antonio Texas 78295 1540 4200 Pan Am Expressway San Antonio Texas 78218 5212 210 357 4400 FAX 210 357 4490 www friedrich com RAC ServMan 04 09 Printed in the U S A
84. nd or units installed in a corrosive atmosphere default or delay in performance caused by war government restrictions or restraints strikes material shortages beyond the control of FRIEDRICH or acts of God OBTAINING WARRANTY PERFORMANCE Service will be provided by the FRIEDRICH Authorized Dealer or Service Organization in your area They are listed in the Yellow Pages If assistance is required in obtaining warranty performance write to Room Air Conditioner Service Manager Friedrich Air Conditioning Co P O Box 1540 San Antonio TX 78295 1540 LIMITATIONS THIS WARRANTY IS GIVEN IN LIEU OF ALL OTHER WARRANTIES Anything in the warranty notwithstanding ANY IMPLIED WARRANTIES OF FITNESS FOR PARTICULAR PURPOSE AND OR MERCHANTABILITY SHALL BE LIMITED TO THE DURATION OF THIS EXPRESS WARRANTY MANUFACTURER EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE FOR BREACH OF ANY EXPRESSED OR IMPLIED WARRANTY Performance of Friedrich s Warranty obligation is limited to one of the following methods 1 Repair of the unit 2 refund to the customer for the prorated value of the unit based upon the remaining warranty period of the unit 3 Providing a replacement unit of equal value The method of fulfillment of the warranty obligation is at the sole discretion of Friedrich Air Conditioning NOTE Some states do not allow limitations on how long an implied warranty lasts or do not allow the limitation or exclusio
85. nit is shut off the gauges may equalize very slowly Gauges connected to a completely restricted system will run in a deep vacuum When the unit is shut off the gauges will not equalize at all A quick check for either condition begins at the evaporator With a partial restriction there may be gurgling sounds Accumulator Indoor Compressor at the metering device entrance to the evaporator The evaporator in a partial restriction could be partially frosted or have an ice ball close to the entrance of the metering device Frost may continue on the suction line back to the compressor Often a partial restriction of any type can be found by feel as there is a temperature difference from one side of the restriction to the other With a complete restriction there will be no sound at the metering device entrance An amperage check of the compressor with a partial restriction may show normal current when compared to the unit specifi cation With a complete restriction the current drawn may be considerably less than normal as the compressor is running in a deep vacuum no load Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be stored there The following conditions are based primarily on a system in the cooling mode Head Pressure Lower Outdoor Coll Gauges will not equalize with unit shut off Completely Restricted System Acc
86. ode Submode of Test Mode Unit must be in Test Mode to enter Error Code Mode 1 Activate Error Code Mode by pressing the TIMER ON OFF button on XQ models LED for the TIMER ON OFF will flash 1 bps while Error Code Mode is active Pressing the button will display 00 Consecutive presses will scroll through all error codes logged Press the wv button to see the reverse order of all error codes logged When the end of logged error codes is reached the temperature set point will appear Activate Error Code Mode by pressing at the same time the A C START button and the ON OFF button on QME models LED for the TIMER ON OFF will flash 1 bps while Error Code Mode is active Pressing the button will display 00 Consecutive presses will scroll through all error codes logged Press the button to see the reverse order of all error codes logged When the end of logged error codes is reached the temperature set point will appear IMPORTANT Error Codes are cleared from the log by exiting from Error Code Mode To exit on XQ models press Timer On Off button To exit QME models press A C Start and On Off buttons Or unplug unit to exit Error Code Mode Plug unit in after 5 seconds to resume normal operation of unit TESTING THE ELECTRONIC CONTROL ERROR CODE LISTINGS E1 SHORT CYCLE SITUATION Defined as compressor powered on before the three minu
87. pen or shorted It will tell whether the capacitor is within its micro farads rating and it will show whether the capacitor is operating at the proper power factor percentage The instrument will automatically discharge the capacitor when the test switch is released Capacitor Connections The starting winding of a motor can be damaged by a shorted and grounded running capacitor This damage usually can be avoided by proper connection of the running capacitor terminals From the supply line on a typical 230 volt circuit a 115 volt potential exists from the R terminal to ground through a possible short in the capacitor However from the S or start terminal a much higher potential possibly as high as 400 volts exists because of the counter EMF generated in the start winding Therefore the possibility of capacitor failure is much greater when the identified terminal is connected to the S or start terminal The identified terminal should always be connected to the supply line or terminal never to the S terminal When connected properly a shorted or grounded running capacitor will result in a direct short to ground from the terminal and will blow the line fuse The motor protector will protect the main winding from excessive temperature Dual Rated Run Capacitor Hook up S FAN MOTOR COM 4 9 C RED DOT RUN CAPACITOR FIGURE 24 24 COMPONENTS TESTING Continued
88. per protective clothing must be worn when working with liquid refrigerant Failure to follow these procedures could result in minor to moderate injury 4 Make necessary repairs to system 5 Evacuate system to 200 microns or less 6 Weigh in refrigerant with the property quantity of R 22 refrigerant 7 Start unit and verify performance WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch DH Failure to follow these procedures could result in moderate or serious injury 8 Crimp the process tube and solder the end shut WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Undercharged Refrigerant Systems An undercharged system will result in poor performance low pressures etc in both the heating and cooling cycle Whenever you service a unit with an undercharge of refrigerant always suspect a leak The leak must be repaired before charging the unit To check for an undercharged system turn the unit on allow the compressor to run long enough to establish working pressures in the system 15 to 20 minutes During the cooling cycle you can listen carefully at the exit of the metering device into the evapor
89. pressor The room thermostat will then control the cycling of the element when the selected indoor temperature is reached TESTING THE HEATING ELEMENT WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death Testing of the elements can be made with an ohmmeter across the terminals after the connecting wires have been removed A cold resistance reading of approximately 10 11 ohms for the 1 15 KW heater 14 5 ohms for the 3 3 KW heater 11 9 ohms for the 4 0 KW heater and 9 15 ohms for the 5 2 KW heater should be registered DRAIN PAN VALVE See Figure 26 During the cooling mode of operation condensate which collects in the drain pan is picked up by the condenser fan blade and sprayed onto the condenser coil This assists in cooling the refrigerant plus evaporating the water During the heating mode of operation it is necessary that water be removed to prevent it from freezing during cold outside temperatures This could cause the condenser fan blade to freeze in the accumulated water and prevent it from turning To provide a means of draining this water a bellows type drain valve is installed over a drain opening in the base pan This valve is temperature sensitive and will open when the outside temperature reaches 40 F The valve will close gradually as the temperature rises above 40 F to fully close at 60 F Figure 26
90. roperly Both tubes shown as hot or cool must be the same corresponding temperature Procedure For Changing Reversing Valve WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death NOTICE FIRE HAZARD The use of a torch requires extreme care and proper judgment Follow all safety recommended precautions and protect surrounding areas with fire proof materials Have a fire extinguisher readily available Failure to follow this notice could result in moderate to serious property damage 1 Install Process Tubes Recover refrigerant from sealed system PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED 2 Remove solenoid coil from reversing valve If coil is to be reused protect from heat while changing valve 3 Unbraze all lines from reversing valve 4 Clean all excess braze from all tubing so that they will slip into fittings on new valve 5 Remove solenoid coil from new valve 6 Protectnew valve body from heat while brazing with plastic heat sink Thermo Trap or wrap valve body with wet rag 7 Fit all lines into new valve and braze lines into new valve WARNING EXPLOSION HAZARD The use of nitrogen requires a pre
91. se SECOND THROUGH FIFTH YEAR SEALED REFRIGERANT SYSTEM f the Sealed Refrigeration System defined for this purpose as the compressor condenser coil evaporator coil reversing valve check valve capillary filter drier and all interconnecting tubing supplied by FRIEDRICH in your Room Air Conditioner fails because of a defect in workmanship or material within sixty months from date of purchase FRIEDRICH will pay a labor allowance and parts necessary to repair the Sealed Refrigeration System PROVIDED FRIEDRICH will not pay the cost of diagnosis of the problem removal freight charges and transportation of the air conditioner to and from the Service Agency and the reinstallation charges associated with repair of the Sealed Refrigeration System All such cost will be the sole responsibility of the owner This remedy is expressly agreed to be the exclusive remedy within sixty months from the date of the original purchase APPLICABILITY AND LIMITATIONS This warranty is applicable only to units retained within the Fifty States of the U S A District of Columbia and Canada This warranty is not applicable to 1 Air filters or fuses 2 Products on which the model and serial numbers have been removed 3 Products which have defects or damage which results from improper installation wiring electrical current characteristics or maintenance or caused by accident misuse or abuse fire flood alterations and or misapplication of the product a
92. so be directed through the heating capillary tubes in a continuous loop during the cooling mode HEATING MODE In the heating mode of operation liquid refrigerant from the indoor coil enters the heating check valve forcing the cooling check valve shut The liquid refrigerant is directed into the liquid dryer after which the refrigerant is metered through the heating capillary tubes to outdoor coils Note liquid refrigerant will also be directed through the cooling capillary tubes in a continuous loop during the heating mode 31 32 REVERSING VALVE DESCRIPTION OPERATION WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death The Reversing Valve controls the direction of refrigerant flow to the indoor and outdoor coils It consists of a pressure operated main valve and a pilot valve actuated by a solenoid plunger The solenoid is energized during the heating cycle only The reversing valves used in the RAC system is a 2 position 4 way valve The single tube on one side of the main valve body is the high pressure inlet to the valve from the compressor The center tube on the opposite side is connected to the low pressure suction side of the system The other two are connected to the indoor and outdoor coils Small capillary tubes connect each end of the main valve cylinder to the PILOT SOLENOID VALVE A and B ports o
93. speed FAN SPEED Press the Fan Speed button to see the current set ting Press again to change the fan speed F1 is the lowest setting SLEEP LOW F2 is MEDIUM F3 is HIGH and SF is the SMART FAN setting To set the hour clock SET HOUR CLOCK Press Set Hr once to see the current clock setting Continue pressing the button until you arrive at the current time Hour only Minutes are not shown on the display Make sure that the A M setting is correct To set the timer NOTE You can set the START and STOP times a minimum of one hour apart and a maximum of 23 hours apart 9 TIMER START Press Startto view the current start time for cooling Continue pressing the Start button until you arrive at the start time you desire The start time for cooling will then be set TIMER STOP Press the Stop button Continue pressing the Stop button until you arrive at the stop time you desire The stop time for cooling will then be set TIMER ON OFF Press the On Off button to activate light on deactivate light off the timer Once the on and off times have been selected they will remain in memory and cycle daily until changed NOTE If the unit is unplugged or the power is interrupted the Set Hr function must be reset or the On Off function will not work Figure 6 Friedrich Temperature Cooler Warmer Timer Operation On Off Start Stop Set Hr Additional RC1 wireless remote controls c
94. ssure regulator Follow all safety procedures and wear protective safety clothing etc Failure to follow proper safety procedures could result in serious injury or death 8 Pressurize sealed system with a combination of R 22 and nitrogen and check for leaks using a suitable leak detector Recover refrigerant per EPA guidelines 9 Once the sealed system is leak free install solenoid coil on new valve and charge the sealed system by weighing in the proper amount and type of refrigerant as shown on rating plate Crimp the process tubes and solder the ends shut Do not leave Schrader or piercing valves in the sealed system NOTE When brazing a reversing valve into the system it is of extreme importance that the temperature of the valve does not exceed 250 at any time Wrap the reversing valve with a large rag saturated with water Re wet the rag and thoroughly cool the valve after each brazing operation of the four joints involved The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line connection COMPRESSOR CHECKS A WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death Locked Rotor Voltage L R V Test Locked rotor voltage L R V is the actual voltage available a
95. t rise across coil If unit operates efficiently check if insulation can be added to attic or walls If insulation is adequate recommend additional unit or larger one Exhaust or fresh air door open Unit undersized Does not heat adequately T stat should close at 38 F Check continuity of Outdoor t stat open applicable models control If temperature is below 38 F replace control 2 0 207 Check adequate fan across heater Check control for open at 160 amp close at 150 Shorted supplementary heater Ohmmeter check approx 32 35 ohms 45 HEAT COOL ROOM AIR CONDITIONERS TROUBLE SHOOTING TIPS Refer to applicable wiring diagram Defective solenoid coil Check for continuity of coil Unit cools when Block condenser coil amp switch unit to cooling heat is called for Reversing valve fails to shift en switch to heating If valve fails to shift replace valve Inoperative system switch Check for continuity of system switch Problem Possible Cause Action Heating capillary tube partially Check for partially starved outer coil Replace restricted heating capillary tube owitch unit several times from heating to Cooling adequate cooling Check temperature rise across but heating coil Refer to specification sheet for correct insufficient temperature rise Check valve leaking internally Deenergize solenoid coil raise head pressure energ
96. t s blower is moving indoor air across the finned surface of the evaporator coil the expanding refrigerant absorbs some of that heat This results in a lowering of the indoor air temperature hence the cooling effect The expansion and absorbing of heat cause the liquid refrigerant to evaporate i e change to a gas Once the refrigerant has been evaporated changed to a gas it is heated even further by the air that continues to flow across the evaporator coil The particular system design determines at exactly what point in the evaporator the change of state i e liquid to a gas takes place In all cases however the refrigerant must be totally evaporated changed to a gas before leaving the evaporator coil The low pressure suction created by the compressor causes the refrigerant to leave the evaporator through the suction line as a cool low pressure vapor The refrigerant then returns to the compressor where the cycle is repeated 7 Disch IX ischarge Line Liquid Line ee SEALED REFRIGERATION SYSTEM REPAIRS IMPORTANT ANY SEALED SYSTEM REPAIRS TO COOL ONLY MODELS REQUIRE THE INSTALLATION OF ALIQUID LINE DRIER ALSO ANY SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER EQUIPMENT REQUIRED 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 Approved Refrigerant Recovery System S Vacuum Pump capable of 200 microns or less vacuum Acetylene Welder
97. t shows A Below normal high side pressure B Above normal low side pressure C Low temperature difference across coil The compressor valves are faulty replace the compressor COMPRESSOR REPLACEMENT Recommended procedure for compressor replacement WARNING RISK OF ELECTRIC SHOCK Unplug and or disconnect all electrical power to the unit before performing inspections maintenances or service Failure to do so could result in electric shock serious injury or death 1 Be certain to perform all necessary electrical and refrigeration tests to be sure the compressor is actually defective before replacing WARNING HIGH PRESSURE HAZARD Sealed Refrigeration System contains refrigerant and oil under high pressure Proper safety procedures must be followed and proper protective clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury or death 2 Recover all refrigerant from the system though the process tubes PROPER HANDLING OF RECOVERED REFRIGERANT ACCORDING TO EPA REGULATIONS IS REQUIRED not use gauge manifold for this purpose if there has been a burnout You will contaminate your manifold and hoses Use a Schrader valve adapter and copper tubing for burnout failures A WARNING HIGH TEMPERATURES Extreme care proper judgment and all safety procedures must be followed when testing troubleshooting handling or working around
98. t the compressor under a stalled condition Single Phase Connections Disconnect power from unit Using a voltmeter attach one lead of the meter to the run R terminal on the compressor and the other lead to the common C terminal of the com pressor Restore power to unit Determine L R V Start the compressor with the volt meter attached then stop the unit Attempt to restart the compressor within a couple of seconds and immediately read the voltage on the meter The compressor under these conditions will not start and will usually kick out on overload within a few seconds since the pressures in the system will not have had time to equalize Voltage should be at or above minimum voltage of 197 VAC as specified on the rating plate If less than minimum check for cause of inadequate power supply i e incorrect wire size loose electrical connections etc Amperage L R A Test The running amperage of the compressor is the most impor tant of these readings running amperage higher than that indicated in the performance data indicates that a problem exists mechanically or electrically Single Phase Running and L R A Test NOTE Consult the specification and performance section for running amperage The L R A can also be found on the rating plate Select the proper amperage scale and clamp the meter probe around the wire to the C terminal of the compressor Turn on the unit and read the running amperage on the me
99. t to insure proper performance Figure 18 Thermostat THERMOSTAT BULB LOCATION The position of the bulb is important in order for the thermostat to function properly The bulb of the thermostat should be located approximately 45 to a maximum of 60 from horizontal Also do not allow the thermostat bulb to touch the evaporator coil See Figures 17 and 18 Figure 19 Thermostat Bulb Location EQ Model Thermostat sensor holder 020 to be positioned between the Ath and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown Basepan top edge COMPONENTS TESTING Continued RESISTOR Heat Anticipator See Figure 20 Failure of the resistor will cause prolonged off and on cycles of the unit When replacing a resistor be sure and use the exact replacement Resistor ratings are as follows 115 Volt 5 000 ohms watt 230 Volt 20 000 ohms 3 watt Figure 20 Resistor DEFROST THERMOSTAT Heat Pump Models Only See Figure 21 WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death This thermostat is single pole double throw with contacts between terminals 2 and 3 closing on temperature rise and contacts between terminals 2 and 1 closing on temperature fall When the contacts between terminals 2 and 1 make power is supplied to the heater element
100. te time delay ten times in one hour Investigate and correct short cycling problem E2 KEYBOARD STUCK ERROR key button s are pressed continuously for twenty seconds or more If MODE key is stuck unit will default to cool Exit Error Code Mode to see if error E2 is no longer displayed and unit is functioning Replace board if E2 still displays after exiting Error Code Mode E3 FROST PROBE OPEN Normal operation is allowed Ohm frost probe Replace probe if ohm value not read If ohm value is present replace board E4 FROST PROBE SHORT Normal operation allowed Replace probe E5 INDOOR PROBE OPEN Control assumes indoor ambient temperature is 90 degree F and unit will operate Ohm indoor probe Replace probe if ohm value not read E6 INDOOR PROBE SHORT Control assumes ambient temperature is 90 degree F and unit will operate Replace probe NOTE All Error Code displays for Frost amp Indoor Probe will allow unit to operate Unit may or will ice up if faulty components not replaced FROST PROBE SENSOR disables compressor at 35 degrees F INDOOR PROBE SENSOR Control range is 60 degrees F to 90 degrees F 2 degrees F Indoor temperature will be displayed by pressing QME units The Fan Speed button and the Temperature button XQ units The Fan Speed button and the TEMP A button The indoor temperature will be displayed for 10 seconds The display will change back to the Set Point temperature by press
101. ter If the compressor does not start the reading will indicate the locked rotor amperage L R A External Overload The compressor is equipped with an external overload which senses both motor amperage and winding tem perature High motor temperature or amperage heats the overload causing it to open breaking the common circuit within the compressor Heat generated within the compressor shell usually due to recycling of the motor is slow to dissipate It may take anywhere from a few minutes to several hours for the overload to reset Checking the External Overload WARNING ELECTRIC SHOCK HAZARD Turn off electric power before service or installation Extreme care must be used if it becomes necessary to work on equipment with power applied Failure to do so could result in serious injury or death A WARNING BURN HAZARD Certain unit components operate at temperatures hot enough to cause burns Proper safety procedures must be followed and proper protective clothing must be worn Failure to follow this warning could result in moderate to serious injury With power off remove the leads from compressor termi nals If the compressor is hot allow the overload to cool before starting check Using an ohmmeter test continu ity across the terminals of the external overload If you do not have continuity this indicates that the overload is open and must be replaced 35 36
102. ter leaking inappropriately which could cause water damage to surrounding property SLEEVE DRAIN Inspect the sleeve and drain system periodically at least yearly or bi yearly and clean of all obstructions and debris Clean both areas with an antibacterial and antifungal cleaner Rinse both items thoroughly with water and ensure that the drain outlets are operating correctly Check the sealant around the sleeve and reseal areas as needed FRONT COVER Clean the front cover when needed Use a mild detergent Wash and rinse with warm water Allow it to dry thoroughly before reinstalling it in the chassis Fresh Compressor Liquid Filter Driers Capillary Tube Reversing Valve N Condenser Coil some models Eront Cover Discharge Air Outdoor Grille oystem Switches Evaporator Coil Sleeve Return Air Grille Filter Blower Wheel Blower Motor Condenser Fan Blade 4 40 COOLING ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Possible Cause Check voltage at compressor 115V amp 230V Low voltage units will operate at 10 voltage variance T stat not set cold enough or Set t stat to coldest position Test t stat amp re inoperative place if inoperative Compressor hums but cuts off on Hard start compressor Direct test compressor overload If compressor starts add starting components O horted a Check for continuity amp resistanc
103. tion Guide Serial Number 00001 Decade Manufactured L 0 C 3 F 6 Production Run Number A 1 D 4 G 7 B 2 E 5 H 8 Year Manufactured Product Line A 1 D 4 G 7 2 5 8 3 6 4 9 Month Manufactured A Jan D Apr G Jul K Oct B Feb E May H Aug L Nov C Mar F Jun J Sept M Dec CHASSIS SPECIFICATIONS FOR 2009 2008 MODELS ENERGY Star Models Energy Coefficient Cooling Heating Electrical Characteristics 60 Hertz Efficiency 0f Moisture Room Side Weight Capacity Capacity Volts Cooling Cooling Heating Heating Ratio Performance Removal Air Circulation Lbs BTU h Rated Rated Amps Watts Amps Watts EER Pints Hr CFM Sleeve Ship Net ULTRA PREMIUM LINE QUIETMASTER Programmable 8400 115 6 6 737 114 16 265 S 14 08 10400 115 75 867 m 12 0 25 260 S 121 15 12100 11900 m 230208 48 50 105207 115 117 29 320 S 120 14 16200 15900 230 208 7480 1653 1656 9 8 9 6 47 360 125 119 20600 20200 230 208 94 101 2081 2020 9 9 10 0 6 0 425 M 160 154 23500 23000 230208 112 21 2479 2421 9 5 9 5 70 400 M 160 154 5 5500 m 115 5 0 500 E 11 0 12 200 0 76 70 6300 115 49 548 11 5 14 175 0 76 70 8000 115 6 8 741 10 8 1 9 175 Q 83 77 10000 115 9 0 1000 10 0 3 2 180 0 89 83 11700 115 11 0 1198 9 8 3 2 200 0 89 83 PREMIUM QUIETMASTER 11600 115 90 1055 110 25 356 S 120 14 14500 115 120 1343 m 10 8
104. tioned within a plastic block to supply a small amount of heat to the bulb area to prevent long off cycles in the Cool Fan Auto MoneySaver position A current feedback through the fan motor windings during off cycle completes the circuit to the resistor In the heating cycle the heat anticipator is energized to supply a small amount of heat during the on cycle This will open the contacts in the thermostat prematurely to maintain a closer differential between the cut in and cut out temperature The heat anticipator is energized in the heating mode regardless of whether fan is placed in the automatic MoneySaver or constant run position RANGE Thermostat Properties 60 F 2 to 92 F 2 TEST Cooling Heating Models Remove wires from thermostat and check continuity between terminal 2 common and 3 for cooling Check between terminals 2 common and 1 for heating Also check that contacts in thermostat open after placing in either position NOTE Temperature must be within range listed to check thermostat Refer to the troubleshooting section in this manual for additional information on thermostat testing THERMOSTAT ADJUSTMENT No attempt should be made to adjust thermostat Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration it is suggested that the thermostat be replaced rather than calibrated Thermostat bulb must be straigh
105. tting There is a 3 minute delay before the compressor will turn on See Automatic Component Protection on this page 2 Should the Check Filter light turn on when you first turn on the unit touch Check Filter to turn off the light Check Filter light will come on after 250 hours of use Clean filter Touch Check Filter to reset To set mode of operation 3 When you first turn on the unit it will be in the Cool mode light on with constant fan 4 Touch MoneySaver light on to activate the MoneySaver feature This cycles the fan with the compressor so that the fan does not run all the time This saves energy and improves dehumidification MoneySaver will also run the fan to sample the return air tempera ture if the off cycle is too long Or you may prefer constant fan for more air movement To return to constant fan touch Cool 5 Touch Fan Only light on if you want only the fan to run You may want to use this feature in conjunction with the Fresh Air Exhaust lever to bring outside air into a room or to exhaust stale air See page 7 Fresh Air and Exhaust Control for more information To adjust temperature 60 F 16 C to 90 F 32 C COOLER Touch and hold until the display shows the desired room temperature 7 WARMER Touch A and hold until the display shows the desired room temperature FAHRENHEIT CELSIUS Touch F C to show the temperature in Celsius touch again to show Fahrenheit
106. umulator Suction Pressure Indoor Coil Lower Outdoor Coil Gauges may equalize very slowly Partially Restricted System HERMETIC COMPONENTS CHECK WARNING BURN HAZARD Proper safety procedures must be followed and proper protective clothing must be worn when working with a torch Failure to follow these procedures could result in moderate or serious injury METERING DEVICE Capillary Tube Systems All units are equipped with capillary tube metering devices Checking for restricted capillary tubes 1 Connect pressure gauges to unit 2 Start the unit in the cooling mode If after a few minutes of operation the pressures are normal the check valve and the cooling capillary are not restricted CHECK VALVE A unique two way check valve is used on the reverse cycle heat pumps It is pressure operated and used to direct the flow of refrigerant through a single filter drier and to the proper capillary tube during either the heating or cooling cycle One way Check Valve Heat Pump Models NOTE The slide check inside the valve is made of teflon Should it become necessary to replace the check valve place a wet cloth around the valve to prevent overheating during the brazing operation CHECK VALVE OPERATION In the cooling mode of operation high pressure liquid enters the check valve forcing the slide to close the opposite port liquid line to the indoor coil Refer to refri
107. unsuccessful remove valve wash Cool as 2 as 1 TVB Hot Pilot valve okay Dirt in one bleeder hole out Check on air before installing If no movement replace valve add strainer to discharge tube mount valve horizontally Stop unit After pressures equalize restart with solenoid energized If valve shifts Piston cup leak reattempt with compressor running If still no shift replace valve Cool Hot Raise head pressure operate solenoid to Clogged Pilot free If still no shift replace valve Raise head pressure operate solenoid to free Cool ood Hot Hot ea ports of pilotopen Backseat pori partially clogged port If still no shift as 2 as 1 did not close replace valve Warm Cool 200 MOL TVB Warm Defective Compressor Replace compressor as 2 as 1 Not enough pressure differential at start Check unit for correct operating pressures arm Warm Hot TVB Hot of stroke or not enough fl ow to maintain and charge Raise head pressure If no pressure differential shift use valve with smaller port on ae arm Warm Hot Hot Hot Both ports of pilot open Ralse nead pes OPE rA SARNO no shift use valve with smaller ports TVB Hot Body damage Replace valve Valve hung up at mid stroke Pumping volume of compressor not suffi cient to maintain reversal Raise head pressure operate solenoid Hot Hot Hot Hot Hot Both ports of pilot open If no shift replace valve Cool MOL 095
108. w proper safety procedures and or these warnings can result in serious injury or death PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS Read the Installation Operation Manual for this air conditioning unit prior to operating Use air conditioner on a single dedicated circuit within the specified amperage rating Connect to a properly grounded outlet only Do not remove ground prong of plug Do not cut or modify the power supply cord Do not use extension cords with the unit Failure to follow these instructions can result in fire and minor to serious property damage WATER DAMAGE HAZARDS Improper installation maintenance or servicing of the air conditioner unit or not following the above Safety Warnings can result in water damage to personal items or property Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit Do not drill holes in the bottom of the drain pan or the underside of the unit Failure to follow these instructions can result in result in damage to the unit and or minor to serious property damage INTRODUCTION This service manual is designed to be used in conjunction with the installation manuals provided with each air conditioning system component This service manual was written to assist the professional RAC service technician to quickly and accurately diagnose and repair malfunctions This manual will deal with subjects in a general nature i e all text will not perta
109. x HEATER LIMIT PART NO REV FAN ONLY j xjojojojojojolojoj o THERMAL FUSE 921 005 00 INSTRUCTIONS FOR USING COOLING LOAD ESTIMATE FORM FOR ROOM AIR CONDITIONERS PUB NO RAC 1 This cooling load estimate form is suitable for estimating the cooling load for comfort air conditioning installations which do not require specific conditions of inside temperature and humidity The form is based on an outside design temperature of 95 F dry bulb and 75 F wet bulb It can be used for areas in the continental United States having other outside design temperatures by applying a correction factor for the particular locality as determined from the map The form includes day factors for calculating cooling loads in rooms where daytime comfort is desired such as living rooms offices etc The numbers of the following paragraphs refer to the corresponding numbered item on the form 1 Multiply the square feet of window area for each exposure by the applicable factor The window area is the area of the wall opening in which the window is installed For windows shaded by inside shades or venetian blinds use the factor for Inside Shades For windows shaded by outside awnings or by both outside aw nings and inside shades or venetian blinds use the factor for Outside Awnings Single Glass includes all types of single thickness windows and Double Glass includes sealed airspace types storm windows and glass block Only one

Friedrich 2008 Air Conditioner User Manual

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