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Friedrich X-STAR R-410A User's Manual

1. 17 410 Sealed System Repair Considerations 18 Sealed Refrigeration System 19 22 COMMIS SSOP 23 24 Compressor Replacement 2 25 26 cR NE TE mmm 2 28 Performance Test Data Sheet isin 29 POUDES NOONG E 30 36 37 38 Instructions Tor using Cooling Load Estimate usse sitione kon ti entes hdi mises 39 Cooling Load Estimate Y 40 FONN eee ee ene T ner ree a eee 41 42 LAU cA TREE T EE 43 Technical ASSIStANGE 44 IMPORTANT SAFETY INFORMATION The information contained in this manual is intended for use by a qualified service technician who 15 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 a
2. m F RETURN AIR TEMPERATURE INDOOR E est F OUTDOOR TEMPERATURE OUTDOOR AMBIENT TEMPERATURE F RH OUTDOOR DISCHARGE AIR TEMPERATURE OUTDOOR m F INTAKE AIR TEMPERATURE OUTDOOR APPLICATION USE ROOM RESIDENTIAL OR COMMERCIAL COOLING OR HEATING AREA W X Blocco SQ CU FT 5Izing your air conditioner correctly is vital Sizing Guide The following guide is based on normal room insulation average number of sun exposed windows and two person occupancy Btu h This is a general guide 450 550 12 000 Please consult manual J or M for exact load calculations 1 000 1 200 21 000 1 200 1 400 23 000 1 400 1 600 25 000 1 600 1 900 28 000 1 900 2 700 35 000 Due to variations in room design climate zone and occupancy larger areas may require the use of multiple units to provide the optimal cooling solution 29 30 GENERAL TROUBLESHOOTING TIPS Turn the unit to the on position and raise or lower temperature setting as appropriate to call for operation The unit is turned to the off position or the thermostat is satisfied Plug into a properly grounded 3 prong The LCDI power cord is unplugged receptacle See Electrical Rating Tables on pg 6 for the proper receptacle type for your unit Unit does not operate Press and release RESET listen for click Reset button latches and remain
3. Heat Cool Models EQ08M11A Friedrich heat cool models include accessories for thru the wall installation only Window mounting requires use of optional accessory kit as listed above 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 conditions 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 Receptacle 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 r
4. To start unit If your air conditioner is installed and plugged into a proper receptacle it is ready to go The firsttime 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 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 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 V 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 rea
5. BURN HAZARD Proper safety procedures must be followed gt and proper protective clothing must be worn when working with a torch 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 proper 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 R410 A 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 Failure to follow these procedures could result in moderate or serious injury 8 Crimp the process tube and solder the end shut WARNING WARNING ELECTRIC SHOCK HAZARD HIGH PRESSURE HAZARD Turn off electric power before service or Sealed Refrigeration System contains refrigerant installation 5 and oil under high pressure Extreme care must be used if it becomes Y Proper safety procedures must be followed necessary to work on equipment with power NY and proper protective clothing must be worn applied ES when working
6. REFRIGERATION SEQUENCE OF OPERATION A good understanding of the basic operation of the refrigeration system is essential for the service technician Without this understanding accurate 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 refrigeran
7. REFRIGERATION SYSTEM REPAIRS IMPORTANT SEALED SYSTEM REPAIRS COOL ONLY MODELS REQUIRE THE INSTALLATION OF A LIQUID LINE DRIER EQUIPMENT REQUIRED 1 Voltmeter 2 Ammeter 3 Ohmmeter 4 Approved Refrigerant Recovery System 5 Vacuum Pump capable of 200 microns or less vacuum o Acetylene Welder Electronic Halogen Leak Detector capable of detecting HFC Hydrofluorocarbon refrigerants 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 XStar 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 Pre
8. carry the unit and wear proper protective clothing 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 NOTICE Units are to be inspected and serviced by qualified service personnel only Use proper protection on surrounding property Failure to follow this notice could result in moderate or serious property damage NOTICE Do not use a caustic coil cleaning agent on coils or base pan Use a biodegradable cleaning agent and degreaser to prevent damage to the coil and or base pan 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 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 verti cal aluminum fin pack when pressure cleaning coils Cover all electrical components to protect them from water or spray Allow the unit to dry thoroughly before rein
9. insure no more leaks are present 9 Evacuate the system with a good vacuum pump capable of a final vacuum of 200 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 25 26 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 clothing must be worn when working with refrigerants Failure to follow these procedures could result in serious injury
10. occupy the space 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 in 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 Intermitte
11. 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 43 44 TECHNICAL SUPPORT CONTACT INFORMATION 4 FRIEDRICH FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 San Antonio Texas 78295 1540 4200 Am Expressway San Antonio Texas 78218 5212 210 357 4400 877 599 5665 x 846 FAX 210 357 4490 Email tac friedrich com www friedrich com Printed in the U S A NOTES 4 FRIEDRICH FRIEDRICH AIR CONDITIONING CO Post Office Box 1540 San Antonio Texas 78295 1540 4200 Am Expressway San Antonio Texas 78218 5212 210 357 4400 FAX 210 357 4490 www friedrich com Printed in the U S A X Star ServMan 4 10
12. 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 i S FAN MOTOR COM 4 9 C RED DOT RUN CAPACITOR 15 16 COMPONENTS TESTING Continued HEATING ELEMENT All electric heat models are equipped with a heating element The EQ08 has a 1 15 KW element 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 l
13. 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 5 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 liquid charge a rotary compressor through the LOW side Doing so would cause permanent damage to the new compressor ROUTINE MAINTENANCE WARNING ELECTRIC SHOCK HAZARD Turn off electric power before inspections maintenances or service 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 EXCESSIVE WEIGHT HAZARD Use two people to lift or
14. 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 low charge condition When the unit 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 Coil Deep Vacuum 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 Muc
15. was written to assist the professional HVAC service technician to quickly and accurately diagnose and repair any malfunctions of this product This manual therefore will deal with all subjects in a general nature i e All text will pertain to all models 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 Compressor Liquid Filter Driers Condenser Coil N Discharge Air Front 44 System Controls Outdoor Grille Evaporator Coil Return Air Grille Filter Jf Sleeve Blower Wheel Blower Motor VE Condenser Fan Blade Basepan UNIT IDENTIFICATION Model Number Code XQ08M 10 8th Digit Engineering Major change 1st Digit Function E Electric Heat X 7 Straight Cool Tth Digit Options 0 Straight Cool 1 1 KW Heat Strip Nominal 2nd Digit Q Q Star Chassis Size 6th Digit Voltage 1 115 Volts Ea Sth 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 Identification 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 E 5 H 8 C 3 F 6 J 9 Month Manufactured A Jan D Apr G
16. will continue to run while the compressor restarts If the 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 XQ fan speed is changed by pressing FAN SPEED button 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 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 CHECKING ROOM TEMPERATURE Check the room temperature at the electronic control pad by pressing the FAN SPEED button and the TEMP button at the same time on XQ models The indoor temperature will display for 10 seconds Indoor temperature can be viewed in all modes including the TEST mode The display can be changed ba
17. 410A systems operate at higher pressures than R22 equipment Appropriate safe service and handling practicces must be used Only use gauge sets designed for use with R410A Do not use standard R22 gauge sets The following is a list of important considerations when working with R 410A equipment R 410A pressure is approximately 60 higher than R 22 pressure R 410A cylinders must not be allowed to exceed 125 F they may leak or rupture R 410A must never be pressurized with a mixture of air it may become flammable Servicing equipment and components must be specifically designed for use with R 410A and dedicated to prevent contamination Manifold sets must be equipped with gauges capable of reading 750 psig high side and 200 psig low side with a 500 psig low side retard Gauge hoses must have a minimum 750 psig service pressure rating Recovery cylinders must have a minimum service pressure rating of 400 psig DOT 4BA400 and DOT BW400 approved cylinders POE Polyol Ester lubricants must be used with R 410A equipment To prevent moisture absorption and lubricant contamination do not leave the refrigeration system open to the atmosphere longer than 1 hour Weigh in the refrigerant charge into the high side of the system Introduce liquid refrigerant charge into the high side of the system For low side pressure charging of R 410A use a charging adaptor Use Friedrich approved R 410A filter dryers only R 410A SEALED
18. Hour 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 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 Activating Error Code Mode 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 15 active Pressing the TEMP HR 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 O
19. Jul K Oct B Feb E May H Aug L Nov C Mar F Jun J Sept M Dec PERFORMANCE DATA EVAP AIR TEMP DEG F OPERATING PRESSURES PRESSURES ELECTRICAL RATINGS pl BREAKER FUSE Discharge Temp Suction Temp Super Heat Sub Coolin i Voltage PERFORMANCE _ Temp TEMPERATURE DEG F 4 Discharge Air Drop Suction Discharge Amps Cool Amps Heat Amps 07 60 Hertz Amps m m amp s e mw e e no vm gt 3 s Dm mu m o 5 m jo w xj m s ee ee e m w e w m 7 5 v Rating Conditions 80 degrees F room air temp amp 50 relative humidity with 95 degree outside air temp amp 40 relative humidity systems use R410A Specifications EnercySTar qualified Energy X Estimated Room Side Efficiency Yearly Moisture Air Net Cooling Heating Volts Cooling Cooling Heating Heating Ratio Operating Removal Circulation Weight Model Capacity Btu Capacity Btu Rated Amps Watts Amps Watts COP EER Cost Pints HR CFM Sleeve Lbs X Star XQ05M10A 5500 XQ06M10A 6000 XQ08M10A 7500 XQ10M10A 9500 Q Chassis 5 Electric Heat EQ08M11A 7500 Due to continuing research in new energy saving technology specifications are subject to change without
20. PERLY 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 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 15 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 chassis seal gasket Make sure the seal gasket has been installed properly to minimize noise and improve efficiency If the chassis seal gasket has not been installed please refer to Step 14 of the installation instructions Also if you switch from mode to Fan Only and switch back to COOL mode there is a three minute delay before the compressor comes back on How to operate the Friedrich room air conditioner models
21. STAT DIC DE ICE T STAT CAP NUT PART NO REV HTR HEATER U 921 201 00 INSTRUCTIONS FOR USING COOLING LOAD ESTIMATE FORM FOR ROOM AIR CONDITIONERS AHAM 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
22. Service Manual 4 FRIEDRICH 2010 P po A Star R 410A Models WU 1 LL Vi CZ LL LLL LL Ld OILILL LILLLLL l Cool Only 115 Volt XQ05M10A XQ06M10A XQ08M10A XQ10M10A Cool with Electric Heat 115 Volt EQO8M11A X Star ServMan 4 10 Table Of Contents Important Safety 2 4 Unt 5 CS I 6 AS SIS SPECINCAUONG ER 6 Installation Information Sleeve Dimensions 6 7 Before Operating 5 8 For Best Cooling Performance and Energy Efficiency 8 gie O Pi0m 9 How to Use the XO Remote Control 10 lt lt C A 10 Electronic Control Sequence of Operation 11 Functional Component Definition ret ep UTE ovt bep T EON 12 Components Testing T 13 16 Refrigeration Sequence of Operation
23. THROUGH FIFTH YEAR SEALED REFRIGERANT SYSTEM If 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 and or units ins
24. 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 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 Dh 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 23 24 Single Phase Resistance Test 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 S Next touch the leads of the ohmmeter from terminals common to run C to Add values to S and C to R together and check resistance from start to run terminals S 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 5 to The next highe
25. VERLOAD PROTECTOR COMPRESSOR WIRE HARNESS BROWN CAPACITOR CONNECT TO CAPACITOR BRACKET CONNECT TO CHASSIS SCHEMATIC L1 115 V ELECTRONIC CONTROL X CLOSED SWITCH LOGIC CLOS SWITCH POSITION CIRCUIT __ CAP CAPACITOR or 10000 COOL 0 MED COOL OVERLOAD PROTECTOR COMMON 5 START R RUN LOW COOL XQ10M10A WIRING DIAGRAM SUPPLY CORD WHITE BLACK CONDUCTOR TO CAPACITOR BRACKET MOTOR WIRE HARNESS GREEN OR GREEN YELLOW TO INNERWALL MOTOR MOUNT NEUTRAL N COMPRESSOR 4 HERM e COMBINATION TERMINAL lI GROUND LEAD PART NO REV 921 200 00 3 38 ELECTROMECHANICAL CONTROL COOL WITH ELECTRIC HEAT MODEL EQO8M11A WIRING DIAGRAM COMPRESSOR SWITCH SYSTEM 5 o 2 o O x lt a ao o O 2 N OPTIONAL SUPPLY CORD CONFIGURATION RIBBED OR WHITE CONDUCTOR 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 THERMO
26. and or disconnect all electrical power to the unit before performing inspections maintenance or service sure to follow proper lockout tag out procedures e Always work in the company of a qualified assistant if possible e 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 air grille discharge air 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 cloth
27. ative Open capacitor Test capacitor amp replace if inoperative Inoperative system switch Test for continuity in all positions Replace if thermistor or electronic board inoperative switch or electronic board Refer t iate wiring di to check Broken loose or incorrect wiring ue 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 amp 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 Thermistor or electronic board is bad Set to coldest position Test t stat or electronic T stat open or inoperative control board amp replace if necessary Dirty filter Clean as recommended in Owner s Manual Dirty or restricted condenser or Use pressure wash or biodegradable cleaning Does not cool 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 Check amperage draw against nameplate If i not conclusive make p
28. circuit for proper voltage only Cycles on amp fused separately overload Refer to appropriate wiring diagram Check by substituti k d it Shorted or incorrect capacitor aa pn of correct rating or test 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 Aen ______ Place jumper across t stat terminals to check if Loss of charge in t stat bulb unit operates If unit operates replace t stat Loose or broken parts in t stat Check as above T stat does not turn unit on 7 _ 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 refrigerant tubes rubbing amp rattling Correct as needed Problem Possible Cause Action Evaporator drain pan overflowing Clean obstructed drain trough Dena d th Evaporator drain pan broken or cracked en Reseal replace No chassis gasket install
29. ck to SET temperature by pressing any key except the ON OFF button or after 10 seconds has elapsed 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 REBOOT RESET THE CONTROL BOARD With unit on press MODE and TEMP HOUR buttons simultaneously for 10 seconds If the panel will reboot you will hear the fan come on and the temperature window will read 60 degrees If this happens turn the unit off for about 10 seconds and then turn it back on to finish the reboot cycle If the panel does not reboot you possibly need to replace it 11 FUNCTIONAL COMPONENT DEFINITIONS MECHANICAL COMPONENTS 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 th
30. dout 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 desired 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 3 MH Mode Mong Saver Fan Only 89 Clock aD Start Time 89 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 settin
31. eceptacle and fuse type SORT ERENS 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 C heating capacity rating the amperes and the energy efficiency ratio UL Heating Air Conditioning and Refrigeration WARNING Before operating 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 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 req
32. ed ase pan Install chassis gasket Poor installation resulting in rain Check installation instructions Reseal as Waer entering the room required Dirty 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 34 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 nen 5 downward pitch of installed unit is less than 1 4 amp no than 3 8 Clean 8 advise customer of periodic cleanin Restricted coil or dirty filter i 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 Exc
33. essive yp Oversized unit Operate in MoneySaver position Inadequate vapor barrier in building Advise customer structure particularly 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 i 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 a from bracket Insert plug amp 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 4 Detach shroud from amp coil Clean amp l Water in compressor area Outside water remove old sealer Reseal reinstall amp check leaks U h or biodegradable cleanin Obstructed co
34. est outdoor ambient temperature for the geographical location from 70 F inside design temperature of the unit for a difference of 30 F 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 30 F 41 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 amp DOORS Area 54 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 6 Sq 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 F
35. eve 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 follow proper safety procedures and or these warnings can result in serious injury or death PROPERTY DAMAGE HAZARDS FIRE DAMAGE HAZARDS e Read the Installation Operation Manual for this air conditioning unit prior to operating e Use air conditioner on a single dedicated circuit within the specified amperage rating e Connect to a properly grounded outlet only Do not remove ground prong of plug Do not cut or modify the power supply cord e Do not use extension cords with the unit e Failure to follow these instructions can result in fire and minor to serious property damage WATER DAMAGE HAZARDS e 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 e Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit e Do not drill holes in the bottom of the drain pan or the underside of the unit e 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 operation and installation manual provided with each unit This service manual
36. g the time press the Set Hour button once Start light comes on Use the A and buttons to select the time that the unit will START 12 After selecting the START time press the Set Hour button once more Stop light comes on Use the A and V 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 function 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 5 a three minute delay before the compressor comes back on 10 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 operat
37. h 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 Accumulator Suction Pressure Indoor Coil Lower Outdoor Coil Gauges may equalize very slowly Partially Restricted System COMPRESSOR CHECKS 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 at 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 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 syste
38. hour to be 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 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 low
39. iced coil Check split across coil Check for low running amperage Testat contacte stick eases 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 tion ______ 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 iu 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 33 COOLING ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Problem PossibleCaue Action Overload inoperative Opens too Check operation of unit Replace overload if soon system operation is satisfactory Allow a minimum of 2 minutes to allow pressures to equalize before attempting to restart Instruct customer of waiting period Compressor restarted before system pressures equalized Check voltage with unit operating Check for Compressor runs other appliances on circuit Air conditioner L fluctuati It for short periods should be in separate
40. ide temperature is below 60 F 16 The digital control is set to fan cycling mode The air conditioner has insufficient cooling capacity to match the heat gain of the room The air conditioner has insufficient heating capacity to match the heat loss of the room This may be due to an excessive heat load in the room It may also be due to an improperly sized unit This may be normal for higher efficiency EER air conditioners You may notice that the discharge air temperature of your new air conditioner may not seem as cold as you may be accustomed to from older units This does not however indicate a reduction in the cooling capacity of the unit Do not try to operate your air conditioner in the cooling mode when the outside temperature is below 60 F 16 C The unit will not cool properly and the unit may be damaged Since the fan does not circulate the room air continuously at this setting the room air does not mix as well and hot or cold spots may result Using the continuous fan setting is recommended to obtain optimum comfort levels Check the cooling capacity of your unit to ensure it is properly sized for the room in which itis installed Room air conditioners are not designed to cool multiple rooms Check the heating capacity of your unit Air conditioners are sized to meet the cooling load and heater size is then selected to meet the heating load In extreme northern climates room a
41. imit 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 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 cold resistance reading of approximately 10 11 ohms for the 1 15 KW heater should be registered DRAIN PAN VALVE 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 Bellows Assembly Drain Pan Valve
42. ing 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 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 sle
43. ing 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 A Warmer button to raise the temperature setting 6 COOLER Press the Cooler 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 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 How To Operate The EQ08 Function Control Knob 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 Thermostat Knob The right hand knob is the thermostat turn it clockwise for cooler counter clockwise for warmer 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 Start to view the current star
44. ir conditioners may not be able to be used as a primary source of heat If there are heat producing appliances in use in the room or if the room is heavily occupied the unit will need to run longer to remove the additional heat Be sure to use exhaust vent fans while cooking or bathing and if possible try not to use heat producing appliances during the hottest part of the day The use of higher efficiency components in your new air conditioner may result in the unit running longer than you feel it should This may be more apparent if it replaced an older less efficient model The actual energy usage however will be significantly less when compared to older models The energy efficiency ratio EER and cooling capacity rating Btu h listed on the unit s rating plate are both agency certified 31 32 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 Set t stat to coldest position Test t stat amp inoperative or electronic control bosrd is bad replace if inoperative Compressor hums but cuts off on Hard start compressor Direct test compressor Compressor overload If compressor starts add starting components does not run Open or shorted compressor Check for continuity amp resistance windings Open overload Test overload protector amp replace if inoper
45. m 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 A 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 compres sor Turn on the unit and read the running amperage on the meter 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
46. minals Contacts should be closed 4 Turn thermostat knob counterclockwise to its warmest position 5 Test 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 TEST Cooling Heating Models Remove wires from thermostat and check continuity between terminal 2 common and 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 itis suggested that the thermostat be replaced rather than calibrated Thermostat bulb must be straight to insure proper performance Thermostat THERMOSTAT BULB LOCATION The position of the bulb is important in order for the thermosta
47. n Off button Or unplug unit to exit Error Code Mode Plug unit in after 5 seconds to resume normal operation of unit ERROR CODE LISTINGS E1 SHORT CYCLE SITUATION Defined as compressor powered on before the three minute time delay ten times in one hour Investigate and correct short cycling problem E2 KEYBOARD STUCK ERROR key button s pressed continuously for twenty seconds or more If MODE key 15 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 XQ units The Fan S
48. ndenser coil PERR M agent to clean Fan blade slinger ring improperly Adjust fan blade to 1 2 of condenser coil fin positioned pack 35 36 HEAT COOL ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Problem Possible Cause Action Disconnect power to unit Remove resistor from t stat bulb block Plug 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 esac cycle Wide differential partial loss of t stat bulb charge Replace t stat Refer to appropriate wiring diagram Resistor is Incorrect wiring energized during ON cycle of compressor or fan Problem Possible Cause Action Close doors or windows Opened doors or windows Dirty filter Clean as recommended in Owner s Manual Check heat rise across coil If unit operates efficiently check if insulation can be added Unit undersized to attic or walls If insulation is adequate recommend additional unit or larger one Does not heat adequately Check for adequate fan air across heater Check control for open at 110 F amp close at 100 F Shorted or opened heater Ohmmeter continuity check Heater hi limit control cycling on amp off ELECTRONIC CONTROL COOL ONLY MODELS XQ05M10A XQO6M10A XQ08M10A COMPRESSOR COMPRESSOR TERMINAL ORIENTATION MAY VARY REFER TO MARKINGS ON COMPRESSOR ELECTRONIC O
49. notice As an ENERGY STAR partner Friedrich Air Conditioning Co has determined that the selected ENERGY STAR models meet the ENERGY STAR guidelines for energy efficiency 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 All models environmentally Estimated yearly operating cost based on 2007 national average electricity cost of 10 65 cents kWh friendly R 410A T The estimated yearly operating cost of this model was not available at the time the range was published vetiigerant e Installation Information Sleeve Dimensions Thru the wall Installation Depth Shell Depth to Minimum Minimum Window Width Finished Hole with Front Louvers Extension Extension Sleeve Height Width A B Into Room Outside Minimum Maximum Height Width Depth 14 19 34 21 373 8 15 5 15 10 34 Doe 42 14 20 1 Minimum extensions when mounted in a window Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation Circuit Rating Breaker lt Circuit Rating Plug Breaker or Face PowerCord Wall Outlet T D Fuse NEMA Length ft Appearance XQ05M10A XO06M10A XQ08M10A EQ08M11A SIDE VIEW 125V 15A 5 15P Front Window Mounting Kits
50. nt loads such as kitchen and laundry equipment are not included in this form 39 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 a 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
51. one 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
52. peed 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 pressing any key button except for the On Off button The indoor temperature can be viewed in all modes including test mode 13 COMPONENTS TESTING Continued EQ08 SYSTEM CONTROL SWITCH TEST EQ08 SYSTEM CONTROL SWITCH TEST Turn knob to phase of switch to be tested There must be continuity as follows 1 Fan Only Position between terminals MS and H 2 Hi Cool Position between terminals L1 and and MS and 3 Low Position between terminals L1 and MS and LO 4 Low Heat Position between terminals L2 and 2 and MS and LO 5 Hi Heat Position between terminals L2 and 2 and MS and System Control Switch EQ Models THERMOSTAT EQ08 Models 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 is common 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 ter
53. pressor is de energized either due to 1 satisfying the temperature 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 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
54. ressure test COOLING ONLY ROOM AIR CONDITIONERS TROUBLESHOOTING TIPS Possible Cause ________ ______ Replace fuse reset breaker 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 System switch in OFF position Set switch correctly Inoperative system switch or open Test for continuity electronic control board Loose or disconnected wiring at switch control board or other com ponents Possible Cause ________ 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 Acton Unit undersized Test cooling performance amp Excessive heat load replace with larger unit if needed OE Check for partially iced coil amp check Restriction in line temperature split across coil Check for oil at silver soldered connections Refrigerant leak Check for partially
55. s 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 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 R410 A and nitrogen and leak test all connections with an electronic or Halide leak detector Recover refrigerant and repair any leaks found Repeat Step 8 to
56. s 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 CLEARANCES Inspect the surrounding area inside and outside to ensure that the unit s clearances have not been compromised or altered Compressor Liquid Filter Driers Condenser Coil Front aN N Discharge Air System Controls Outdoor Grille Evaporator Return Air Grille Filter Sleeve Blower Wheel Blower Motor Condenser Fan Blade Basepan 29 ROOM AIR CONDITIONER UNIT PERFORMANCE TEST DATA SHEET DATE MODEL SERIAL YES NO IS THERE A FRIEDRICH SLEEVE INSTALLED IS THERE A FRIEDRICH OUTDOOR GRILL INSTALLED IS MAINTENANCE BEING PERFORMED If NO is checked use back of sheet for explanation ELECTRICAL LINE VOLTAGE STATIC VOLTS STARTUP VOLTAGE VOLTS AMPERAGE DRAW AMPS COOL AMPERAGE DRAW AMPS HEAT COMPRESSOR LOCKED ROTORAMPS e AMPS RUNNING AMPERAGE DRAW AMPS INDOOR TEMPERATURES INDOOR AMBIENT TEMPERATURE a F RELATIVE HUMIDITY RH INDOOR COOL HEAT DISCHARGE AIR TEMPERATURE INDOOR
57. s in to resume operation The LCDI power cord has tripped Reset button has popped out Reset the circuit breaker or replace the fuse as applicable If the problem continues contact a licensed electrician There has been a local power The unit will resume normal operation once failure power has been restored Other appliances are being used on The unit requires a dedicated outlet circuit not the same circuit shared with other appliances An extension cord is being used Do NOT use an extension cord with this or any of end other air conditioner Unit Trips Circuit Breaker or Blows Fuses Replace with a circuit breaker or time delay fuse of the proper rating See Electrical Rating Tables on pg 6 for the proper circuit breaker fuse rating for your unit If the problem continues contact a licensed electrician The circuit breaker has tripped or the supply circuit fuse has blown The circuit breaker or time delay fuse is not of the proper rating The LCDI power cord can trip Reset button pops out due to disturbances on your power supply line Press and release RESET listen for click Reset button latches and remains in to resume normal operation LCDI Power Cord Trips Reset Electrical overload overheating or Once the problem has been determined and Button Pops Out cord pinching can trip Reset button corrected press and release RESET listen for pops out the LCDI power cord click Reset button la
58. s 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 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 A 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
59. ssure Gauge 0 to 750 Ibs 10 Low Pressure Gauge 30 to 200 Ibs 11 Vacuum Gauge 0 1000 microns 12 Facilities for flowing nitrogen through refrigeration tubing during all brazing processes EQUIPMENT MUST BE CAPABLE OF Recovering refrigerant to EPA required levels 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 refrigerant charge introduced into the system 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 wi
60. st resistance is from the start to the common connections 5 to C 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 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 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 65 OHMS RESISTANCE RESISTANCE EQUALS RESISTANCE S toC R to C 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 5 Liquid refrigerant returning to compressor causing oil to be washed out of bearings 6 Noncondensables such as air and moisture the system Moisture is ex
61. stalling it in the sleeve BLOWER WHEEL HOUSING CONDENSER FAN SHROUD Inspect the indoor blower housing evaporator blade con denser 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 con denser 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 electrical tests Use an air conditioning or refrigeration thermometer to check room outdoor and coil operating temperatures Use an electronic tester to measure wet bulb temperatures indoors and outdoors 27 28 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 water 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 obstruction
62. t the compressor If the compressor seems quieter than normal it is an indication of a low refrigerant charge Overcharged Refrigerant Systems of the evaporator will not be encountered because the refrigerant will boil later if at all Gauges connected to Compressor amps wil be near normal or higher system will usually have higher head pressure depending Noncondensables can also cause these symptoms To upon amount of over charge Suction pressure should be confirm remove some of the charge if conditions improve slightly higher 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 Accumulator system Suction Pressure Noticeably High An overcharge can cause the compressor to fail since it would be slugged with liquid refrigerant 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 21 22 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
63. t x 0 20 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 DLL ILL OL OE Ee 1 11 11 114 14 144141 UNIT CAPACITY HEAT LOAD SERRE RR AMBIENT TEMPERATURE F BASE POINT 7 FRIEDRICH Friedrich Air Conditioning Company P O Box 1540 San Antonio TX 78295 210 357 4400 www friedrich com ROOM AIR CONDITIONERS LIMITED WARRANTY FIRST YEAR ANY PART If 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 purchase SECOND
64. t 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 11 TIMER ON OFF Press the On Off button to activate light on or 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 FRIEDRICH Temperature V Cooler AM Warmer Timer Operation On Off Start Stop SetHr Additional RC1 wireless remote controls can be purchased from your Friedrich dealer X Star Off D Low Cool 3 min between ELECTRONIC CONTROL SEQUENCE OF OPERATION 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 com
65. t 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 Thermostat Bulb Location EQ Model Thermostat sensor holder 020 to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown Basepan top edge 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 WARNING ELECTRIC SHOCK HAZARD Disconnect power to the unit before servicing Failure to follow this warning could result in serious injury or death BLOWER 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 live 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 s
66. t 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 condenser 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 a7 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 drier to trap any moisture presentin the 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
67. talled 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 WARRANT Y Performance of Friedrich s Warranty obligation is limited to one of the following methods 1 Repair of the unit 2 A 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 exclusion of consequential
68. tches and remains in to resume normal operation NOTE Adamaged power supply cord must be replaced with a new power supply cord obtained from the product manufacturer and must not be repaired The return discharge air grille is Ensure that the return and or discharge air blocked paths are not blocked by curtains blinds furniture etc Windows or doors to the outside are open Ensure that all windows and doors are closed The temperature is not set at a cool Adjust the Temperature control to a cooler or enough warm enough setting warmer setting as necessary Unit Does Not Cool Heat The filter is dirty or obstructed Clean the filter See Routine Maintenance or Room Sufficiently Or Cycles remove obstruction On And Off Too Frequently The indoor coil or outdoor coil is Clean the coils See Routine Maintenance or dirty or obstructed remove obstruction Be sure to use exhaust vent fans while cooking There is excessive heat or moisture or bathing and if possible try not to use heat cooking showers etc in the room producing appliances during the hottest part of the day The temperature of the room you Allow additional time for the air conditioner to are trying to cool is extremely hot cool off a very hot room GENERAL TROUBLESHOOTING TIPS CONTINUED Possible Cause Possible Solution Unit Does Not Cool Heat Room Sufficiently Or Cycles On And Off Too Frequently continued Unit Runs Too Much The outs
69. 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 5 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 Disch IX ischarge Line Liquid Line ee 17 R 410A SEALED SYSTEM REPAIR CONSIDERATIONS WARNING Refrigeration system under high pressure Do not puncture heat expose to flame or incinerate Only certified refrigeration technicians should service this equipment R
70. thin 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 cause the temperature of the suction gas 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 19 20 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 itis 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
71. top after approximately 2 minutes then the fan and compressor will start together approximately 2 minutes later Blower 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 open 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
72. tremely destructive to a refrigerant system 7 Defective capacitors 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 Do 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 unit while in operation with high temperature components Wear protective safety aids uum such as glove
73. uirements 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 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 CIRCUIT RATING OR TIME DELAY REQUIRED WALL FUSE RECEPTACLE XQ05 XQ06 XQ08 XQ10 2008 Figure 1 4 PRESS TEST BUTTON FOR USE DO NOT USE IF ABOVE TEST FAILS WHEN GREEN LIGHT IS ON IT IS WORKING PRO
74. us lowering the temperature and pressures within the 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 manual Capacitor Reduces line current and steadies the voltage supply while greatly improving the torque characteristics of the fan motor and compressor motor 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 Heating element Electric resistance heater available in 2008 model 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 Capillary tube A cylindrical meter device used to evenly dis tribute the flow of refrigerant to the heat exchangers coils COMPONENTS TESTING TESTING THE ELECTRONIC CONTROL BOARDS FOR XQ MODELS X Star Power ic soe uoa dp Fan Only gt Clock Timer Set Start Time On Off Hour Stop Time 2 Temp
75. with refrigerants Failure to do so could result in serious injury or Failure to follow these procedures could death result in serious injury or death Undercharged Refrigerant Systems A check of the amperage drawn by the compressor An undercharged system will result in poor performance motor should show a lower reading Check the Unit low pressures etc in both the heating and cooling opecification After the unit has run 10 to 15 minutes cycle check the gauge pressures Gauges connected to system with an undercharge will have low head pressures and Whenever you service a unit with an undercharge of y 9 substantially low suction pressures 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 em working pressures in the system 15 to 20 minutes Compressor Accumulator During the cooling cycle you can listen carefully at the exit of the metering device into the evaporator an intermittent Suction Pressure Indoor Coil Much Lower hissing and gurgling sound indicates a low refrigerant Compressor Running charge Intermittent frosting and thawing of the evaporator epu is another indication of a low charge however frosting and thawing can also be caused by insufficient air over the evaporator Undercharged System Checks for an undercharged system can be made a

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