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SERVICE MANUAL - Appliance Factory Parts

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1. D 13 SEER Generation direction 15 15KW 60Hz AIC coil V Vertical 22 22 b59 E D 460V 3Ph E 14 SEER Generation H Horizontal 25 25 625 20 20KW 60Hz AIC coil A 115V 1 Ph 60Hz B Blower unit 24 symbol W Wall moun 60 ted unit 60000BTU h Table 1 1 Model number explanation outdoor unit H R 24 D 2 V A R Nominal System SEER Design Haier capacity in Electric Designation Body style Reserved type designation series 1000 Btuh A 10SEER B 11SEER A 115V 1Ph 60Hz C 1 1st C 12SEER C 208 230V 3Ph Brand Condensing 24 Generation D 13SEER 60Hz A symbol Unit 24000BTU h S Scroll E 14SEER D 460V 3Ph 60Hz standard H 60 2 2nd R Recipr F 15SEER V 208 230V 1Ph style Haier R Heat 60000BTU h Generation ocating G 16SEER 60Hz Pump H 17SEER Y 575V 3Ph 60Hz I 188EER Table 1 2 1 3 ENGINEERING FEATURES COPPER TUBE ALUMINUM FIN COILS Both indoor and outdoor coils are designed and matched to optimize heat transfer while minimizing size and cost with increased durability and reliability Central Air Conditioning Model Heat Pump HR13 D2 CABINETS Constructed of powder painted galvanized steel to provide a durable finish and protection for the outdoor coil FAN GUARD AND MOTOR BRACKET Welded powder coated guard with independent rod and band motor bracket unit top has a deep draw fan venturi for efficient air flow SERVICE VALVES F
2. GR STRTH START THERMISTOR OPTIONAL V Sa TRAN TRANSFORMER ews el Sn 230 208 SELECTABLE V oos CNB VL K Pi COLOR CODES Ar LPS cok BK BLACK BL BLUE GY GRAY m ds Di RD BR BROWN GR GREEN OR ORANGE De ele A HPS i2 PU PURPLE RD RED VI VIOLET RD C p m OR RD BL WH WHITE YL YELLOW LYNC V Son eegene 4 i i i i i E COMPRESSOR 24VAC COMMON 13SEER 13SEER 13SEER 13SEER 14SEER 14SEER LED Flash Codes LED illuminates during unit operation only Dip 1 Dip2 Dip3 Dip4 loop CT twice loop CT once loop CT twice loop CT once loop CT twice loop CT once continuous on 24VAC supplied to Y terminal of defrost control OFF OFF OFF OFF HR18D1VAR HR42D1VAR HR18D2VAR HR42D2VAR HR18E1VAR HR42E1VAR Flash on off System in defrost operation 1 2 1 2 1 flash Pipe coil sensor open or short circuit 1 2 1 2 2 flash Vent suction sensor short circuit OFF OFF ON OFF HR30DiVAR HR60DiVAR HR30D2VAR HR60D2VAR HR30EiVAR HR 0Eivan 1 2 1 2 3 flash LPS amp HPS open circuit 1 2 1 2 4 flash CT sensor out of max range OFF OFF OFF ON HR24D1VAR HR48D1VAR HR24D2VAR HR48D2VAR HR24E1VAR HR48E1VAR OFF OFF ON ON HR36D1VAR HR36D2VAR HR36E1VAR 1 Confirm defrost control board DFC dip switch settings and CT application for system selection as shown in adjacent table Optional compone
3. otal Input Watts Cooling ity Btu h 8 3 C Heating COP _ 8 3 C Heating HSPF otal Input Watts Heating CFM Q o 2 2 ko JQ D o D Q lt z o 2 ao D 2 a co o Q g o D Q lt Ilaz JAHE Se a D al 9 3 9 O fa 5 lt S gt a S D 2 oO Minimum Circuit Amps Compressor ype Maker Reciprocating Reciprocating Reciprocating Reciprocating 5 Y M E ol lt SES L D 3 Ke o 3 1 o EI lt D D o bd S 1 m gt a 3 LO c o bg o 3 o lt Hz 208 230 1 60 208 230 1 60 208 230 1 60 208 230 1 60 Model Number H21J14BABCA H21J19BABCA H21J24BABCA H21J30BABCA RLA Rated Load Amps RA Locked Rotor Amps Yes OS IZ EE 5 x o o D 0 ag oO o 4 nternal Overload Protection Pp Ces ves CTC Cd les LI Yes LI e RLA Rated Load Amps y oos 086 a 1 8 1 8 Ooo o 25 Yes Yes 1 4 hp Nominal RPM 1000 1000 nput Watts Diameter In No of Blade 4 an Material Zinc Coated Steel Zinc Coated Steel Zinc Coated Steel 5 D m o IL o o o U o z o A Ola o El 2 5 o 1 o a IH a je Central Air Conditioning Model Heat Pump HR13 D2 HR30D2VAR 2 5 Ton Outdoor HP New Model 2 Le 0 87 x 0 75 0 Enhanced fins 5 16 Grooved 11 9 5 5 po bottle green Stamped sheet metal Deep Drawn Elevated Easy Acc
4. 11 8 1 2 4 0 7 8 3 8 11 8 3 8 11 8 1 2 5 0 7 8 3 8 11 8 3 8 11 8 1 2 Table 8 1 Note The factory charge is sufficient for 25 feet of standard liquid line For longer or shorter liquid line lengths adjust the charge as follows 1 4 Line 0 3 oz Per foot 5 16 Line 0 4 oz Per foot 3 8 Line 0 6 oz Per foot 1 2 Line 1 2 oz Per foot Vertical Separation between Indoor and Outdoor Units Maximum allowable vertical separations between indoor and outdoor units are illustrated in Fig 8 2 B and Fig 8 2 C When the indoor unit is below the outdoor unit Fig 8 3 B and 50 when the indoor unit is above the outdoor unit Fig 8 2 C To ensure good oil return to the compressor when the indoor unit is below the outdoor unit suction line oil trap should be used as illustrated in Fig 8 2 B Interconnecting piping CAUTION Use caution when removing the service valves caps from the suction and liquid line fittings as there is pressure present A fitting is on the liquid line to remove pressure CAUTIONI Condensing units ship from the factory with an operating refrigerant charge Heat pump unit liquid and suction valves are closed to contain the charge within the unit Do not force the valve stem against the retaining ring If the valve stem is backed out past the retaining ring system pressure could force the valve stem out of the valve body and possibly cause personal injury Instructions on the interconnecting pi
5. 2 23 94 53 6 9 351 86 3 993 118 4 1 932 23 22 72 55 4 8 892 87 8 3 819 120 2 1 862 24 8 21 55 57 2 8 458 89 6 3 657 122 1 793 26 6 20 45 59 8 048 91 4 3 514 123 8 1 729 35 a l a ef Central Air Conditioning Model Heat Pump HR13 D1 3 2 Outdoor discharging temp sensor R80 50K 3 B25 80 4450K 3 with copper terminal 3 3 High pressure switch N C type pressure switch the open pressure 435Psi close pressure 377Psi adjustable 3 4 Low pressure switch N C type pressure switch the open pressure 7 25Psi close pressure 21 75Psi adjustable 3 5 Signal continueous detecting time Pressure switch 30seconds Sensor value 20seconds Sensor failure short circuit open circuit 2minutes 4 PCB port function 4 1 CN1 1 2 3 4 are corresponding to the input signal of R C Y O R live line 24VAC C neutral line OVAC Y 24V compressor input signal O 24V 4 way valve input signal 5 is electric heating output signal and used as 24V signal output to start up the electric heating function when defrosting 6 pre set See the figure from left to right they are 1 2 3 4 5 6 4 2 CN2 24VAC control signal OVAC neutral line output to control AC contactor winding 4 3 CN3 24VAC control signal OVAC neutral line output to control 4 way valve winding 4 5 CN6 outdoor coil temp sensor connector the coil temp sensor connected disconnected failure 30seconds later alarm the
6. CYCLE Mechanical The operation sequence is as follows 1 The compressor provides high pressure superheated refrigerant vapor 2 The vapor leaves the compressor and passes through the reversing valve 3 The vapor flows through the outdoor vapor line to the finned outdoor coil Air from the outdoor fan removes heat from the refrigerant vapor When enough heat is removed the vapor condenses into a high pressure liquid The liquid temperature leaving the outdoor coil is slightly warmer than ambient air temperature 4 This warm high pressure liquid leaves the outdoor coil and flows through the small copper refrigerant liquid line 5 At the end of the liquid line the refrigerant passes through a fixed metering device reducing pressure and temperature 6 The liquid under reduced pressure then enters the indoor coil surface it expands and absorbs heat from the indoor air passing over the finned surface Heat from the indoor air causes the low pressure liquid to evaporate and cool the indoor air The refrigerant has now been converted to cool vapor 7 The cool refrigerant vapor travels through the larger insulated vapor line to the accumulator 8 The accumulator separates any liquid refrigerant and holds it Only vapor refrigerant and refrigerant oil leave the accumulator The oil is drawn out through a special port inside the accumulator 9 Refrigerant vapor flows through the suction line to the intake of the compressor The cycle th
7. FIELD INSTALLED Ty OPTIONAL M M Nhe m ni USE COPPER CONDUCTORS ONLY NS ap WARNING CABINET MUST BE PERMANENTLY GROUNDED R i AND ALL WIRING TO CONFORM TO T E C N E C C E C CLC AND LOCAL CODES AS APPLICABLI Puj NEP NW REPLACEMENT WIRE MUST BE THE SAME GAGE AND 208 230V 1X2X3XAX5X6 INSULATION TYPE AS ORIGINAL WIRE 60Hz1PH 57777770007 COMPONENT CODES i BCR BLOWER CONTROL RELAY BCAP RUN CAPACITOR BLOWER MOTOR CC COMPRESSOR CONTACTOR 2 3X4 5X 6 CCH CRANKCASE HEATER OPTIONAL 2X3X4X5X6 CHS CRANKCASE HEATER SWITCH OPTIONAL Ak laD Teu Tet TER wu CMPR COMPRESSOR DFC DEFROST CONTROL BOARD i i i i i i i i 208 230V HPS HIGH PRESSURE SWITCH 60Hz 1PH m RD LPS LOW PRESSURE SWITCH IBM INDOOR BLOWER MOTOR PIPE SENSER ODS OUTDOOR TEMPERATURE SENSOR VERSER OFM OUTDOOR FAN MOTOR RCAP RUN CAPACITOR COMPRESSOR RVS REVERSING VALVE SOLENOID FINS SAS WSS STCAP START CAPACITOR OPTIONAL RVS Che cn Quo ps STRLY START RELAY OPTIONAL CN4 o
8. TOWARD OUTDOOR UNIT 1 2 FOR EVERY 10 OF LINE INDOOR UNIT ABOVE OR 70 LEVEL TO OUTDOOR UNIT MAX INDOOR UNIT OUTDOOR UNIT iH INDOOR UNIT LIQUID LINE INDOOR UNIT BELOW OUTDOOR UNIT Figure A Figure B INVERTED LOOP LI LIQUID LINE INDOOR UNIT OUTDOOR UNIT EE ISS WR 27 274 LU f i SUCTION LINE Figure C Fig 8 2 Only refrigeration grade copper piping dehydrated and sealed should be used Take extreme care to keep the refrigerant tubing clean and dry prior to and during installation If there is any doubt on the cleaness of the piping blow out the line with dry nitrogen to remove any chips or debris before connection are made Always keep tubing sealed until the connections are to be made Refrigerant piping should be as short as possible with a minimum of elbows or bends to avoid capacity loss and increased operating costs Refrigerant lines must be adequately supported If metal strapping is used to secure the tubing do not allow the strapping to directly contact the tubing Use a closed cell insulation to separate the strapping from the tubing Do not kink or twist the tubing Refrigerant piping should not be installed in a cement slab as this limits access to the refrigerant should a leak be suspected Note To ensure good oil return to the compressor it is important to pitch the horizontal suction line toward the compressor approximately 1 2 f
9. access area A typical application will find the unit located about 10 from wall with connection side facing this wall This application minimizes exposed tubing and wiring and minimizes the traffic around the unit reducing subsequent damage to the installation When necessary for confined applications provide a minimum of 10 clearance on all air inlet sides For service access to the compressor and control box allow 18 minimum clearance Ensure top discharged free from unobstructions If units must be located under an overhang there should be a minimum of 36 clearance and provision made to deflect the warm discharge air out from the overhang In order to maintain design air flow owners should be advised to avoid lawn clippings from depositing on the fin coil surface and reducing the system performance B I a ie Central Air Conditioning Model Heat Pump HR13 D2 8 5 REFRIGERANT PIPING Properly sized and installed refrigerant piping is very important for the efficient operation of the air conditioning system Note the following guidelines 1 The total run both vertical and horizontal should be less than 50 feet or line size correction may be necessary 2 Ifthe vertical separation exceeds 10 feet use the next larger liquid line size OUTDOOR UNIT WHEN INDOOR UNIT IS 4 FEET OR MORE BELOW OUTDOOR UNIT A SUCTION LINE OIL TRAP IS REQUIRED PROVDE ADDITIONAL TRAPS FOR VERY 20 FEET OF LIFT PITCH SUCTION LINE
10. any system without filters Note if an electronic air cleaner is installed remove any mechanical filter from the air handler Follow the installation and maintenance instructions furnished with the electronic cleaner OUTDOOR COIL CLEANING Keep the outdoor coil clean for full air flow and proper operation Do not allow leaves grass clippings or other material to obstruct the coil Do not allow anything to block the coil Keep fences shrubs or other obstructions at least 24 away from the coil air inlets If the coil becomes obstructed or dirty it may be necessary to clean the coil A Before cleaning coil TURN OFF ELECTRICAL POWER to the outdoor unit B Remove the top with the outdoor fan attached C Flush water through the coil from the inside out NOTE Avoid getting water on any controls or other electrical devices If electrical components get wet dry it thoroughly before energizing There are many commercial coil cleaning materials developed to clean outddor coils Follow the manufacturer s instructions when using these marterials Normally the solvent is sprayed onto the coil Allow several minutes for the solvent to dissolve any organic matter Wash away the solvent and any dissolved matter with water from a garden hose NEVER USE A WEATHER COVER OVER THE OUTDOOR UNIT The unit is designed to operate outdoors A cover traps moisture in the unit causing rust and corrosion There is the added danger of starting the system with th
11. failure can be resumable 36 B Ha ef Central Air Conditioning Model Heat Pump HR13 D1 4 6 CN7 discharging temp sensor connector the discharging temp sensor connected disconnected failure 30seconds later alarm the failure can be resumable When compressor is running if the discharging temp 248 F compressor will stop if the discharging temp lt 203 F for 3 minutes compressor will run ba 4 7 XT time shorted function twin core pin if it is with a jumper after being electirfied the PCB MCU time will be shorted 4 8 CN8 pressure control port can collect the signal If the pressure switch acts before the units start the system will alarm immidately If the pressure switch hasn t acts before the units start the system will alarm only when the switch acts 3 times within 30 minutes the failure can not be resumable Please reset the power to clear the alarm E ow E Si m r 4 9 CT current value detected by current mutual inductor after compressor is running the running current will be detected if it is over current protection value depended by the dip switch setting for continueous 20s the unit will stop 3 minutes later it will resume to work If it alarms for 3 times within 30 minutes the failure can not be resumable Please reset the power to clear the alarm 37 a a ie Central Air Conditioning Model Heat Pump HR13 D1 5 Defrostingperation The un
12. flow reduces total capacity and can causes coil icing Improper air balance will affect system performance and customer s satisfaction and can cause premature component failure Air conditioning requires a specified air flow Each ton of air conditioning requires 400 cubic feet of air per minute 400CFM TON Duct design and construction should be done with care System performance can be lowered dramatically through bad planning or workmanship In cooling a hot attic can cause a temperature gain of 3 in the return duct and 4 in the supply duct This can reduce the cooling capacity of an air conditioning system by as much as 30 This means a loss of almost one ton of cooling capacity from a three ton system Air leakage of only 396 in a return duct can cause a 59 loss in system capacity 396 leakage on a three ton system is only 30 CFM Two or three unsealed joints can cause a leak of this size Sealing the return and supply ducts result in full system capacity and lower operating costs Effective duct insulation is essential to prevent loss of capacity and sweating ducts in the cooling mode Duct systems installed in the conditioned space can be left uninsulated but a dense 1 2 fiberglass duct liner reduces blower and air noises and prevents sweating ducts when humidity levels are high Supply and return duct systems in attics and crawl spaces require a minimum 1 of dense duct liner or 2 fiberglass wrap with a sealed vapor barrier A leaky v
13. opposite direction pressure moves the piston off the seat and liquid refrigerant flows around the piston Using too small a piston starves the coils of refrigerant A piston that is too large floods coils Mismatching indoor and outdoor units of split systems affects performance efficiency charging and reliability PROPER MATCH OF UNIT AND PISTON SIZES Split air conditioning indoor and outdoor units must be carefully matched to balance the heat transfer indoors with the heat resected or claimed by the outdoor unit Manufacturer s specification sheets and installation manuals should be followed to insure proper match Matched systems are listed on the internet at ARI ORG Combinations for indoor and outdoor units using a distributor and flowcheck are shown in the application table 6 2 Distributor assy Fig 4 4 B a ie Central Air Conditioning Model Heat Pump HR13 D2 REFRIGERANT CIRCUIT Fig 4 5 All 13SEER units outdoor coils are multi circuit Refrigerent gas or liquid is uniformly distributed to from 4 to 10 circuits to improve heat transfer and reduce capacity losses due to pressure drops Fig 4 5 SERVICE VALVES There are two types of service valve used on these air conditioning units They are the service port valve or Schrader valve and the refrigerant line valve The Schrader valve is like a valve in an automobile tire The stem or core is removable with a flexible seal at its bas
14. should be given to the equipment location and exposure Avoid having lawn sprinkler heads spray directly on the unit cabinet In coastal areas locate the unit on the side of the building away from the waterfront Shielding provided by fence or shrubs may give some protection Regular maintenance will reduce the buildup of contaminants and help to protect the unit s finish WARNING Disconnect all electrical power to the unit before servicing Disconnect power to both the indoor and outdoor units NOTE There may be more than one electrical disconnect switch Failure to shut off power can cause electrical shock resulting in personal injury or death 1 Frequent washing of the cabinet fan blade and coil with fresh water 2 Regular cleaning and waxing of the cabinet with automobile wax 3 An appropriate coil cleaner may be used once per year to remove matter that will not wash off with water The best protection is frequent cleaning and avoiding exposure to debris that blocks airflow 8 3 INSTALLATION These units are designed for outdoor installation They can be mounted on a slab or rooftop It is the installer s responsibility to insure that the unit is installed in accordance with all local codes Check the following points before begining any installation Structural strength of supporting members Clearances and provision for servicing B a ie Central Air Conditioning Model Heat Pump HR13 D2 Power supply and wi
15. through adequate duct work will provided a comfortable living space There are several factors that installers must consider Outdoor unit location Proper equipment evacuation Outdoor unit refrigerant charge Indoor unit air flow Indoor unit blower speed Supply and return air duct design and sizing System air balancing Diffuser and return air grille location and sizing Unit Dimensions Model HR18 36D2VAR Dimensions W nch mm D nch mm H inch mm Table 6 1 B a ie f Central Air Conditioning Model Heat Pump HR13 D2 Piston sizes and indoor fan speed Note the piston placed in the outdoor unit package box is used for indoor unit when cooling Piston Size Piston Size Outdoor Indoor Installed in placed in outdoor package bag Indoor fan speed 051 057 059 062 Table 6 2 Piston size The air distribution system has the greatest effect On the quality of the installation and the owner satisfaction the duct system is totally in the responsibility of the contractor These are numerous thchnical associations and reference that recommend correct procedures The correctair quantity is critical for correct air conditioning system Proper operation efficiency compressor life and humidity control depend on the correct balance between indoor load and outdoor unit capacity High indoor air flow reduces system dehumidification capacity and can leave the space humid and uncomfoltable Low indoor air
16. HE COMPRESSOR MOTOR TO COOL AND THE INTERNAL OVERLOAD TO RESET THEN RETEST C Run to Common 1 0 ohms Start to Run 2 Ohms Start to Common Ohms OPEN COMPRESSOR START WINDING REPLACE THE COMPRESSOR 7 The resistance from one winding terminal to any other terminal should be the same with three phase compressors NOTE on larger 208 230 volt compressors the ohm values could be as low as 0 10 ohms THIS IS NOT A SHORTED WINDING A winding is open if resistance measured is infinite COMPRESSOR MECHANICAL CHECKS Compressors fail mechanically due to bearing failure valve failure or damage to the internal suspension system Bearing and valve failure is almost always caused by liquid refrigerant COMPRESSORS ARE DESIGNED TO ONLY PUMP REFRIGERANT VAPOR Liquid refrigerant damages the valves by deforming or breaking them Liquid refrigerant also damages bearings by diluting or foaming the lubricating oil SYSTEM PUMP DOWN This procedure tests the compressor valves It can indicate internal refrigerant leaks such as through the liquid line service valve The procedure uses the compressor to trap all the refrigerant inside the condensing coil outdoor cooling The technician s gauges indicate if the condensing coil holds the refrigerant as intended or if it leaks out Procedure 1 Connect the compound refrigerant gauge to a service port that reads suction pressure such as on the compressor shell or in the line between accumulator and comp
17. Haier Central Air Conditioning SERVICE MANUAL Models HR18D2VAR HR24D2VAR HR30D2VAR HR36D2VAR Features Efficient performance and economical operation Benchmark hermetic compressor design Haier Hi Efficiency aluminium fin and copper tube design Compact design Durable construction Quick easy installation and service Heat pump Value Series HR13 D2 Powder coated full metal jacket Manual code SYJS 014 07REV 0 Edition 2007 04 02 B Ha ef Central Air Conditioning Model Heat Pump HR13 D2 CONTENTS 1 DESCRIPTION OF PRODUCTS amp FEATURES 3 2 PHYSICAL AND ELECTRICAL SPECIFICATIONS 5 3 SAFETY PR CAUTIONS cusan Ein dne eene EE Chu EE 8 4 SYSTEM COMPONENTS AND FUNCTIONS 8 5 ELECTRICAL CONTROL DEVICES een 10 6 Qe yo mm 2 11 7 REFRIGERANT DIAGRAM enm 13 8 INSTALLATION INSTRUCTIONS eee 13 9 MAINTENANCE INSTRUCTIONS een HHHH 23 10 SERVICE AND TROUBLESHOOTING eI 23 11 WIRING DIAGRAMS Leere ep oae ne eme ca Enn EuEbxE RUE estate 40 Warning The equipment detailed in this manual should be installed and serviced only by qualified technicians who are familiar with the safety procedures required for this work and who have the proper tools testing equipment and replacement parts During testing it may be ne
18. S TO PERFORM THE DESCRIBED REPAIRS COMPRESSOR ELECTRICAL CHECKS Single phase compressors use permanent split capacitor motors There are two windings that connect at a common point at the common wiring terminal The two windings are called start and run The start winding has the higher resistance and is connected in series with the capacitor The run winding has the lower resistance and connects directly to the power supply from the compressor contactor The design uses a protective device called an internal overload If compressor draws high amperages for an anusually long time or temperatures in the compressor motor it opens an internal circuit to stop the motor ELECTRICAL CHECK COMPRESSORS 1 Consult the unit wiring diagram Confirm that all electrical wiring for the units is correct and that all wiring connections are right 2 Measure the available line voltage On the single phase 208 230Volt units this should be from 197 to 253 Volts 3 Check for proper control voltage at the unit contractor coil If this voltage is inadequate or is not present refer to the wiring diagram or the compressor troubleshooting flow chart at the end of this section for possible causes 4 Disconnect all power from the unit and visually inspect the compressor contactor for pitted or burned contacts A This could indicate high or low voltage problems or improper start components B check the contactor coil with an ohmmeter for a short o
19. Temporarily install a thermometer on the vapor line near outdoor unit Be sure of good contact between thermometer and line Wrap thermometer with insulating material to assure accurate reading 5 Refer to Table 8 2 for proper system superheat Add charge to lower superheat Remove charge to raise superheat Carefully remove guage B a je Central Air Conditioning Model Heat Pump HR13 D2 System Superheat Ambient Return Air Temperature F Temperature At Condenser Inlet 65 70 75 80 85 F 60 17 25 30 33 37 65 13 19 26 32 35 70 5 14 20 28 32 75 5 10 17 25 29 80 5 12 21 26 85 5 10 17 20 90 7 12 18 95 5 5 5 100 5 5 Table 8 2 System charging table by superheat 8 8 ELECTRICAL WIRING A means of strain relief must be installed to this appliance at the electrical service entrance The interconnecting wires between indoor and outdoor units must be in accordance with the national electric code and all code regulations Failure to follow these codes or the use of unsupported practices or procedures could result in damage or personal injury or death Do not use temporary power cords and do not connect multiple devices to the same electric circuit Such could cause a fire or an electric shock due to circuit overloads All electrical work should be performed by knowledgeable personals according to national codes and in accordance with this installation manual Ground the u
20. USE OF SUCH UNAUTHORIZED COMPONENTS OR ACCESSORIES MAY ENDANGER LIFE AND PROPERTY THE MANUFACTURER DISCLAIMS ANY RESPONSIBILITY FOR SUCH LOSS OR INJURY RESULTING FROM THE USE OF SUCH UNAUTHORIZED COMPONENTS OR ACCESSORIES Always use industry recognized service practices in the maintenance adjustment and repair of the products covered in this manual Always wear safety glasses when handling refrigerant and peforming brazing operations Follow the manufacturer s instructions when making repairs installing replacement parts and performing system maintenance Use only authorized factory parts 4 SYSTEM COMPONENTS AND FUNCTIONS This section describes the various air conditioning components their purpose and operation This section is only a guide and does not consider all components that could be found on an air conditioner in the field COMPRESSORS Fig 4 1 The heart of any refrigerant system is the compressor It is a pump that causes refrigerant to flow There are several different types of compressors but all use electricity to turn an electric motor to drive a pump Central air conditioners use two types of compressors The first is the enhanced reciprocating compres sor it operates with an offset crankshaft and pistons and resembles an internal combustion engine the driving force is supplied by an electric motor turning the crankshaft and forcing pistons up and down in cylinders where valves control the flow of refrigera
21. Volt minimum 25 VA service from the indoor transformer as shown on the wiring diagram 21 B a je Central Air Conditioning Model Heat Pump HR13 D2 8 10 SYSTEM STARTUP 1 Turn thermostat to OFF turn on power supply at disconnect switch 2 Turn temperature setting above the room temperature 3 Turn fan switch to ON Indoor blower should run Be sure it is running in the right direction 4 Turn fan switch to AUTO Turn system switch to COOL and turn temperature setting below room temperature Unit should run in cooling mode 5 Check to see if compressor and outdoor fan are running correctly 6 Check the refrigerant charge see Instructions under Charging the System 7 Replace service port caps Service port cores are for system access only and will leak if not tightly capped 8 Check unit for tubing and sheet metal rattles 9 Instruct the owner on operation and maintenance Leave this Installation and Operating Manual and the Use and Care Manual with owner 8 11 OPERATION SEQUENCE OF OPERATION In order to service and troubleshoot a air conditioning system The service technician must understand the system s sequence of operation This is the order of events the system undergoes in response to Understanding the sequence of operation aid in determining where to start troubleshooting when the unit doesn t operate properly Deviation from the normal operation sequence will provide clues to system problems COOLING
22. WHEN THERE IS A SINGLE POLE CONTACTOR ONE SIDE OF A 240 V A C CIRCUIT REMAINS HOT THIS MEANS THAT THE WIRING IN THE HIGH VOLTAGE CIRCUIT MAY HAVE A POTENTIAL OF 120V A C TO GROUD BEFORE SERVICING THE UNIT ALWAYS TURN OFF POWDER AT THE UNIT DISCONNECT SWITCH OPTIONAL DELAYS AND KITS A Time Delay in the compressor contactor lowcontrol circuit allows time for system pressure to equalize before re starting the compressor This delay uses solid state circuitry to measure the time since the power was interrupted and is set for approximately 3 minutes It is not field adjustable This is a delay on break timer Defrost PCB Fig 5 2 START KITS OPTIONAL This special relay uses the EMF generated by the compressor start windings to take a start capacitor out of the circuit The relay and its companion capacitor can start the compressor at low voltages and against higher pressure such as those caused by non bleed port expansion valves Start kit components should match the recommended ratings and functions of those provided by the reciprocating compressor manufactorer See Specifications start components Start kits are not normally required with scroll compressors The operating characteristics of the scroll compressor make a start kit unnecessary 6 APPLICATION Before specifying any air conditioning equipment a survey of the structure and a heat gain calculation must be made A heat gain calculation involves identifying all surfaces and ope
23. Y Tp Tp0 10 4 for 3 min Tp Tp0 17 6 for 3 min go to defrost yes yes go to defrost go to defrost Note The defrost action will be end when defrost has worked for 10 minutes or when the piping temp arrives at or more than 50 F 38 Haier 5 3 Troubleshooting Central Air Conditioning Model Heat Pump HR13 D1 does the unit work properly does there show any default code refer to other fault solution yes T does the dip switch at proper position refer to wire diagram no change the dip switch to right position 39 yes check the resistance of pipe sensor whether at normal range 13K for 35 6 T and 37k AF normally between this range o replace pipe sensor fon yes does reversing valve work ok no replace reversing valve yes T set pipe temp to about 32 F and use a ring to short the XT port see whether defrost EL replace PCB yes j check system whether lack R22 m H a lef Central Air Conditioning Model Heat Pump HR13 D2 11 WIRING DIAGRAM Heat Pump Wiring Diagram 0010578732 3 LINE VOLTAGE INDOOR FACTORY STANDARD t FIELD INSTALLED UNIT ELEGTAC HEATER KIT b OPTIONAL LOW VOLTAGE ox FLE moli 8 FACTORY STANDARD gE
24. a number of reasons including failure bearing loss due to a lack of lubrication This may be caused by excessive water Lubrication can be washed out of permanently lubricate bearing If a motor fails replace it with cimilar motor having the same rotation horse power RPM and electrical 26 E a je Central Air Conditioning Model Heat Pump HR13 D2 characteristics CONDENSER FAN BLADE LOCATION Dimension A will be from 2 to 4 depending on the unit model number Be sure to check this dimension BEFORE removing the fan blade Note When parts combination results in motor blade interference the fan blade should be located to provide 1 8 motor blade clearance RELAYS ELECTRICAL OPERATION Contactor coils are made with copper wires wrapped around a steel core When energized the coil generates a magnetic field that moves the steel core to open or close the circuit contacts Electrical continuity indicates a good coil Relay coils use specific voltage Using a contactor with the wrong voltage coil will prevent the system from operating properly This problem is avoided when using the proper replacement part for a failed component Fig 10 4 Relay contacts are switches and can become pitted or corroded creating resistance Resistance can generate enough heat to weld the contacts together Physical examination of the contacts will reveal this problem With sealed relays use an ohmmeter to test for open or c
25. acilitates unit servicing and provides a reliable and safe access to measure unit pressures BASE PAN This deep drawn base keeps the bottom of the coil off the ground has weep holes to allow for complete drainage Fig 1 4 FLOWCHECK DISTRIBUTORS Outdoor units use the Flowcheck Distributor to act as an open check valve in the cooling mode ACCESSORIES LOW AMBIENT CONTROL This factory installed option allows for low temperature operation in the cooling cycle ambient temperatures down to OF This control should be installed in units that operate in cooling when outdoor ambient temperatures below 65 F and is recommended for all commercial applications START COMPONENTS This option provides additional starting for covering a wide range of voltages and system pressure combinations This option maybe required on reciprocating compressors with flowcheck piston metering SERVICE VALVES AND PRESSURE PORTS Mounted external to the cabinet for easy access at installation and during service a I a je Central Air Conditioning Model Heat Pump HR13 D2 2 PHYSICAL AND ELECTRICAL SPECIFICATIONS Specifications Subject to Change without Prior Notice Model Number HR18D2VAR HR24D2VAR HR30D2VAR HR36D2VAR Comments 1 5 Ton Outdoor HP 2 Ton Outdoor HP 2 5 Ton Outdoor HP 3 Ton Outdoor HP Model Status New Model New Model New Model New Model Performance EE ity Btu h 17 000 22 500 28 000 3500 ity Btu h ity Btu h
26. apor barrier results in duct sweating causing wet insulation does not insulated Heat transfer through poorly insulated systems can result in over 5096 loss in operating capacity Sweating ducts also results in rusting that leads to premature duct failure Carefully follow the industry practices to insure a well designed duct system Air supply diffusers must be selected and located carefully They must be sized and positioned to deliver treated air along the perimeter of the space If they are too small for their intended air flow they can be noisy If they are not located properly they can cause drafts in the rooms Return air grilles must be properly sized to carry air back to the blower If they are too small they also cause noise The installers should balance the air distribution system to ensure proper air flow to all rooms in the home This ensures a comfortable living space 7 REFRIGERANT SYSTEM DIAGRAM refer Figure 7 8 INSTALLATION INSTRUCTIONS WARNING These instructions are intended as an aid to qualified service and instalolation personnel for proper installation adjustment and operation of this unit Read these instructions thoroughly before attempting installation or service this equipment Failure to follow these instructions may result in improper installation service or maintenance and could possibly result in fire electrical shock property damage 13 Ha lef Central Air Conditioning Model Heat Pump HR13 D2 Co
27. cessary to work with circuits with live electrical components Only individuals with proper training that can follow all electrical safety precautions should perform this work Failure to follow all safety precautions could result in property damage serious injury or death B a je Central Air Conditioning Model Heat Pump HR13 D2 1 DESCRIPTION OF PRODUCTS amp FEATURES 1 1 Air conditioning This manual discusses split central air conditioning and indoor coils Split central air condition system refers to the physical location of major air conditioning components The split system air conditioning are manufactured to standards of quality and performance They are 13 SEER Seasonal Engery Efficiency Ratio which meet or exceed the standards imposed by efficiency legislated and therefore represent both good value today and for years to come The current air conditioning system use scroll and reciprocating compressors This gives the air conditioning a durable compressor which needs less external protection while increasing the unit efficiency in cooling mode 1 2 NOMENCLATURE FOR MODEL NUMBER Model number explanation indoor unit Lr Haier Blower unit capacity in Ge Electric Efficiency Design Airflow Unit Continuation 1000 Btu h heater Designation code series configuration Width in Y 575V 3Ph 60Hz 00 No V 208 230V 1Ph A 10 SEER 05 5KW 60Hz AIC coil Ist M Multi 10 40KW C 208 230V 3Ph
28. ditions found in all installations Note Upon arrival at the job site a sound first step is a review of the system installation to identify any obvioss problems this Installation Manual should be used as a guide REFRIGERANT RECOVERY Refrigerant systems using chlorofluorocarbon CFC and Hydrochlorofluorocarbon HCFC refrigerants system are subject regulation by the clean air Act of 1990 This act prohibits the unrestricted release 23 B i a Ie Central Air Conditioning Model Heat Pump HR13 D2 of refrigerant into the air Proper charging of refrigerant system may require removing some refrigerant when the system is overcharged and is to be used by personnel with appropriate industry experience recover the excess refrigerant Recovery means to collect the refrigerant in a special holding container Recycling means to run the refrigerant through a filtering system to remove most particles and moisture Reclaiming means to chemically reprocess the refrigerant to return it to its original purity Recovering and recycling refrigerant is possible with the aid of mechanical devices made for the purpose The recovery system is a compressor pump assembly which removes refrigerant from a system and safely stores it in a Department of Transportation DOT approved container until it is re used or returned for reclaim The authors of the EPA regulations enforcing the Clean Air Act realized that an accidental release of the refrigerant may happ
29. e cover on This prevent air flow through the outdoor coil causing dangerous system pressure Compressor damage may result 10 SERVICE AND TROUBLESHOOTING WARNING THE ABILITY TO PROPERLY PERFORM SERVICE ON THIS EQUIPMENT REQUIRES EXPERIENCE MECHANICAL SKILLS TOOLS AND TEST EQUIPMENT IF YOU ARE NOT QUALIFIED DO NOT ATTEMPT TO PERFORM ANY SERVICE ON THIS EQUIPMENT CONSULT THE USER S MANUAL FOR ROOTING MAINTENANCE THAT CAN BE DONE BY THE HOME OWNER FAILURE TO FOLLOW THIS WARNING COULD RESULT IN POSSIBLE DAMAGE TO THE EQUIPMENT SERIOUS PERSONAL INJURY OR DEATH The HVAC industry had improved the efficiency of the products offered to consumers New and more sophisticated mechanical and electronic features for achieving higher efficiencies have been designed The use of test equipment is now more critical than ever In the servicing and troubleshooting section is information on compressors and other components and their test procedures There are troubleshooting charts charging charts wiring diagrams and service guide charts Included is list of suggested test equipment This information can be uesed by the service technician to understand the installation and troubleshooting and operation of the current familie of air conditioning The procedures inthis section are genericin content Each product family incorporates some of these components Be aware of this is a guide compiled from numerous sources It can not take into consideration all con
30. e held closed with a spring Schrader valves allow a technician to connect gages to the system with a minimum loss of charge Use a cap with an inner seal to prevent leakage and keep dirt and moisture from entering the system Refrigerant control valves allow the outdoor unit to be isolated into from the balance of the system In split Systems these valves also hold the charge in the outdoor section from factory 5 ELECTRICAL CONTROL DEVICES THERMOSTATS Thermostats are the most obvious control in the air conditioning system because these controls are accessible by the consumer Contact your local distributor for information on part numbers of various manual changeover auto changeover and set back thermostats or see the thermostat and subbase selection information found in the wiring diagram booklet In the cooling mode the thermostat calls for cooling by energizing the compressor contactor and the indoor blower control The indoor blower can operate continuously by setting the thermostat subbase fan switch to the ON position PROTECTION DEVICES Protection for the unit begins with the installation of appropriate fuses or circuit breakers by the installing contractor Breaker or fuse size is governed by the National Electrical Code and local code AMP draw requirements for each unit are found in the Specifications OVERLOADS AND LIMITS Overloads protect against over current or over temperature conditions Those located in the outdoor unit incl
31. e replacement compressor is the same model number and electrical characteristics as the original D Place the new compressor in the unit and install the mounting bolts E Remove the caps from the compressor stubs clean the lines and stubs and braze joints together F If any burn detected replace the liquid line filter drier with an oversized core filter drier if the burn was severe and a suction line filter drier Warnings 1 TACK APPROPRIATE STEPS TO KEEP CONTAMINATIONS OUT OF THE LINES WHILE THESE LINE ARE OPEN TO ATMOSPHERE 2 USE A OFMINIMUM 5 SILVER FOR COPPER TO COPPER CONNECTIONS USE A OF MINIMUM 35 SILVER FOR COPPER TO STEEL CONNECTIONS 3 WHEN BRAZING PURGE DRY NITROGEN THROUGH THE LINES TO PREVENT THE FORMATION OF OXIDES G Inspect all other components such as check valve and electrical components for proper operation Replace any if necessary H After all connections are made open the service valves and pressurize to 150 psi with dry nitrogen Leak test with liquid detergent If a leak is found repair it after removing the nitrogen and recheck l After leak testing recover any test refrigerant J Keep with A subpoints Evacuate through both high and low side connections to the system Evacuate to a level of 1500 microns twice and 500 microns the last time Break each vacuum with dry nitrogen to 3 0 psi Use the largest connections and hoses possible to expedite the process K Charge with clean new or reclaim
32. ed R 22 refrigerant Charge in accordance with proper charging procedures L Re check the system 24 hours of run time to verify the unit is free of acid 31 a a je Central Air Conditioning Model Heat Pump HR13 D2 7 Other Check Points A Verify the operating voltage is within the specified range B Check that all wiring connections are tight C Verify that all fuses or circuit breakers are of the proper type and operational D Verify the air conditioning operates properly in cooling E Inspect all the other electrical components for proper operation F Verify the thermostat and subbase are correct and operate properly G Verify all ducts and air moving device are sized and operate properly H Verify the refrigerant piping is sized correctly and not pinched Verify all the system are in correct position 10 2 Troubleshooting Guide WARNING Disconnect all electrical power to the unit before servicing Disconnect power to both the indoor and outdoor units NOTE There may be more than one electrical disconnect switch Failure to shut off power can cause electrical shock resulting in personal injury or death Symptom Possible Cause Remedy Power off or loose electrical Make sure main switch is ON Check and connection tighten all connections No cooling heating Incorrect thermostat setting Set thermostat correctly Defective 4 way valve check the valve coil or replace it Compr
33. en repeats Electrical The operation cycle as follows 1 The thermostat calls for cooling when the space temperature is above the set point 2 This sends a 24 voltage signal through the Y terminal to the outdoor unit PCB after 3 minutes the compressor contact in the outdoor unit are closed The compressor and outdoor fan start At the same time a 24 Voltage signal flows through the G Terminal to the air handler PCB and indoor blower starts The cooling system is now in operation The thermostat satisfies and ends the call for cooling This ends the 24 Voltage signal to the compressor start kit and the outdoor unit stops This ends the 24 voltage signal to the indoor blower relay and this indoor blower strips The system is now off e ONO B i a je Central Air Conditioning Model Heat Pump HR13 D2 9 MAINTENANCE INSTRUCTIONS FILTERS WARNING DISCONNECT MAIN ELECTRICAL POWER TO THE UNIT BEFORE ATTEMPTING ANY SERVICE OR MAINTENANCE 1 The air conditioning system operates must efficiently with clean air filters check filters monthly to determine how frequently your filters need be cleaned A new home require more frequent filter attention until dust and fibers from the construction is removed 2 Replace glass fiber filters when dirty 3 Clean semi permanent plastic impregnated fiber filters A Vacuum clean or B Wash with detergent and water air dry thoroughly and re install Caution Do not operate
34. en in the course of normal service Always use procedures so as not to release any refrigeran When performing service on a refrigerant system charging should be done using the best service practices ensuing that the least amount of refrigerant needed is used Lines must be evacuated before charging with refrigerant WARNING IN ORDER TO COMPLAY WITH FEDERAL LAW ALWAYS USE A RECOVERY RECYCLINE DEVICE WHEN DOING REFRIGERANT SERVICE TEST EQUIPMENT The following test equipment is recommended to properly service air conditioning equipment A good quality volt ohm meter A two channel temperature electronic thermometer A Magnetic Gauge capable of reading to 3 W C A refrigerant pressure Gauge manifold set Aclamp on ammeter An electronic leak detector or bottle of soap suds Amicron meter not shown Avacuum pump capable of pulling to 1000 microns Refrigerant recovery recycling equipment OO OO JO Om P GO vacuum pump Fig 10 1 Before beginning any troubleshooting procedure complete the following installation checklist An equipment problem is sometimes caused by an improper installation By completing this checklist the problem may be found and corrected Make copies of the checklist and complete one for every air conditioning system call for your records 10 1 INSTALLATION AND SERVICE CHECKLIST Refer to the unit installation instructions for the specifics ELECTRICAL m Correct the ther
35. ess es Optional Optional es Haier Enhanced Coil Haier Enhanced Coil HR24D2VAR 2 Ton Outdoor HP New Model Number or Rows ll 1 0 87 x 0 75 Finsperinch FPL 2 2 Enhanced fins 5 16 Grooved 12 2 Number of Circuits IOut A 4 4 Exterior Appearance bottle green op cover Stamped sheet metal Deep Drawn Elevated Easy Access aod sye Fome oo RE s Yes cona Mieg ooa pioa Plastic mesh Optional O Optional k D E lt eatures Lug Ves e Haier Enhanced Coil Haier Enhanced Coil Y Yes Y ully Enclosed Motor Removable Top Grill Assembly levated Base Pan e e e S e S e Yes e S e e N Y Y o Y Y h ilter Dryer ull Reusable Service Valves asy Service Access Accessories kg OIMmMInIT m DICH 9 o o x E o o a AE HI IN 2 ko o m 3 2 P S ZS 2 5 9 5 O T c 2 Ei 2 Q 0 a o 9 6 z o es es es Optional Optional o Optional Optional Yes Y S Yes Yes Optional Start AssistKit_ No k N Optional Yes Compressor BlanketKit_ No N Fan Delay Kit Note 1 Yes Y Piston Yes Y Zz CD o oO n 1 21 4 4 Yes Yes High and Low Pressure Switches No No Yes Yes e e e e e Kl Ha left Central Air Conditioning Model Heat Pump HR13 D2 Model Number HR18D2VAR HR30D2VAR Comments 1 5 Ton Outdoor HP 2 5 Ton Outdoor HP Model Status Dimensio
36. essor without pump function replace it Dirty filters Clean amp replace Indoor air blockage Check supply registers and return grills for blockage Blocked outdoor coil Clear away leaves and other debris Improperly sized unit Recalculate load Insufficient Cooling Improper airflow Check should be 400CFM Ton Incorrect refrigerant charge Charge correctly per instruction Air non condensable or moisture in Recover refrigerant evacuate amp recharge system add filter drier Incorrect voltage At compressor terminals voltage must be within 10 of rating plate volts when unit is running Water on floor or in Blocked condensate drain and P Remove blockage and clean drain lines verify furnace trap operation of condensate pump Condenser fan and AC Contact not connected to the Re connect the power supply wire and compressor don t run power supply wire or not tightly fasten tightly fasten The outdoor power supply main circuit Reset the power supply switch to ON switch in OFF position or fuse position or change the fuse and confirm the blown on main circuit main power lead to the Contactor has voltage present Check if the relay P2 of system PCB has a current output if not check if P1 and P3 have 24 V AC input If have 24V AC please check if it keep for 3 minutes if so and P2 no output change the 3 minute timer board if keep time lt 3 minutes P2 no output if P1 P3 no24V AC first check the thermosta
37. f Central Air Conditioning Model Heat Pump HR13 D2 Run capacitor Fig 10 2 Some compressors require the assistance of a hard start kit to start it is urgest to consult the compressor manufactores recommendations for start kits follow the manufactores installation information WARNING DISCONNECT ALL POWER TO THE OUTDOOR UNIT BEFORE BEGINNING THIS TEST MOTORS ELECTRICAL The motors in both the outdoor unit and indoor unit are similar Outdoor motors have one speed while indoor motors usually are multi speed All fan motors require a capacitor for the best torque and efficiency If the motor is replaced replace the capacitor at the same time The fan motor has both Run and Start windings Extended run windings furnish a choice of speeds with indoor products Use an Ohmmeter to troubleshooting motors Motor Fig 10 3 ELECTRICAL CHECK TO TEST FAN MOTOR 1 Be sure power is off to the motor 2 Disconnect the motor wires 3 Place one ohmmeter lead on common and the other on start The meter should show continuity 4 Place one ohmmeter lead on common and the other on run The meter should show continuity with less resistance 5 Leave one meter lead on common and touch each remaining lead Each should indicate continuity 6 Ifa winding does not show continuity the motor has failed and must be replaced 7 Ifthe motor needs replacing replace the capacitor as well MECHANICAL Fan motors can fail for
38. g discharge check valve scroll compressors only leaking compressor valves ACTION Determine the causes and correct it SYSTEM REFRIGERANT NONCONDENSIBILES CHECK This procedure checks the quality of the refrigerant by comparing the refrigerant pressure to its temperature The test tells if there are contaminating non condensable gases in the refrigerant usually air or moisture 1 Pump the system down as the explained in the previous procedure Open the unit disconnect to SHUT Down the system when the suction pressure drops to 3 5 psi positive pressure 2 Front SEAT THE LARGE VAPOR LINE VALVE 3 Disconnect the compressor by REMOVING EACH WIRE FROM THE COMPRESSOR TERMINALS MARK AND IDENTIFY THE WIRE TERMINALS WITH THE COPRESPONDING WIRE COLOR CODE WARNING WRAP A LAYER OF INSULATION ELECTRICAL TAPE OVER THE WIRE TERMINALS NOT THE COMPRESSOR TERMINALS THESE WIRE ENDS WILL BE AND GNERGISED HOT DURING THE REMINDER OF THE TEST 4 Close the disconnect switch to the system and run the condensing fan Measure the condensing coil entering and leaving air temperature with accurate thermometers 5 Run the condensing fan until the leaving air temperature equals to the entering air temperature This is now the refrigerant temperature 6 Compare the observed refrigerant pressure shown on the high pressure gauge to its associated pressure on a temperature pressure conversion chart 7 The refrigerant pressure should equal the chart pressure f
39. ge 33 Model Heat Pump HR 13 D2 IH a e Central Air Conditioning Model Heat Pump HR13 D1 Electric control board and function for central air conditioner Heat pump control board Tie Failure code Note 1 2 second flash sycle indicates problem indication Faure indication LED will flash for alarm Flash frequency 0 5 second on and 0 5 second off with a 2 seconds interval between flashes 1 1 Outdoor coil temp sensor failure flash once 1 2 Compressor discharging temp sensor failure flash twice 1 3 Pressure switch failure three times 1 4 Over current protection four times Indicator function When LED is used as failure indication refer to the failure code 34 B i a e Central Air Conditioning Model Heat Pump HR13 D1 When LED is used as a status indicator the following codes will be shown 1 5 In defrost the LED will flash 2 seconds on 2 senconds off 1 6 In the normal operation state and the compressor is running outdoor PCB LED will be in the ON state 1 7 In normal state if compressor not running outdoor PCB LED wiil be OFF 2 Function selection Function selection for SW1 2 1 SW1 1 ON quick defrosting mode used for very cold area please see 5 2 OFF default setting normal defrost program please see 5 1 2 2 SW1 2 ON temperature point from which begin to count for defrost Tp lt 32 F OFF temperature point from which begin to count for defrost Tp 35 6 F The setti
40. how how to measure pressure drop across the coil If pressure drop tables are available they indicate the cubic feet of air per minute CFM moving through the coil An inclined manometer or magnehilic guage can be used for measurement A velometer measures the velocity of the air in feet per minute FPM If the area of duct is known the velometer reading times the area of duct in square feet calculates the air flow If the indoor unit has an electrical heater air flow can be estimated by measuring the air temperature entering and leaving the heater and calculating the CFM M l VOLTS x AMPS X 3 414 CFM Electrical Heater 1 08 XTEMP RISE COMPRESSOR AND SYSTEM FAULT DIAGNOSIS Compressor manufacturers state that maul of the compressors returned as defective have been misdiagnosed To ensure that does no t happen the technician must determine if the compressor has failed or if another control has either failed or stopped the compressor from operating after detecting a problem The following procedures should help determine if the compressor has failed Prior to replacing a suspected failed compresso a thorough check must be made of all existing electrical electrical components If not done a replacement compressor might also failed or not operate at all THE FOLLOWING PROCEDURES SHOULD ONLY BE ATTEMPTED BY QUALIFIED SERVICE TECHICIANS EQUIPPED WITH PROPER TOOLS SAFTY PROCEDURES AND EQUIPMENT AND INSTRUMENT
41. in liquid line metering Replace defective components High head Low device or filter drier vapor pressures Flowrator piston size too small Change to correct size piston Incorrect capillary tubes Change coil assembly High head High or Blocked outdoor coil Clear away leaves and other debris Refrigerant overcharge Correct system charge normal vapor Condenser fan not running Repair or replace pressures Air non condensibles or moisture in Recover refrigerant evacuate amp recharge system add filter drier Low head High Flowcheck piston size too large Change to correct size piston vapor pressures Defective compressor valves Replace compressor Incorrect capillary tubes Replace coil assembly Low vapor cool compressor iced evaporator coil Low evaporator airflow Increase blower speed or reduce restriction replace air filter Operating below 65 F outdoors Add low ambient kit Moisture in the system Recover refrigerant evacuate amp recharge add filter drier High vapor pressure Excessive load Recheck load calculation Defective compressor Replace Fluctuating head and vapor pressures Air or non condensibles in system Recover refrigerant evacuate amp recharge Pulsing noise at metering device or liquid line Air or non condensibles in system Recover refrigerant evacuate amp rechar
42. ion any repair on this unit should be done by a certified technician The manufacturer s warranty does not cover any damage failure caused by the air conditioning system You should be aware that the use of unauthorized components accessories or devices may adversely affect the operation of the air conditioner and may also endanger life and property The manufacturer disclaims any responsibility for loss or injury due to the use of such unauthorized components accessories or devices Attach the service panel to the outdoor unit after to prevent If the service panel is not attached securely it could result in a fire or an electric shock due to dust water etc 8 1 OUTDOOR UNIT INSPECTION This product has been inspected at the factory and released for shipment without known damage Inspect exterior of carton for evidence of rough handling in shipment Unpack carefully If damage is found report immediately to you distributor or the transportation agency 8 2 EQUIPMENT PROTECTION FROM ENVIRONMENT The metal parts of the unit may be subject to rust or corrosion in adverse environmental conditions This oxidation could shorten the unit life Salt spray or mist in seacoast areas sulphur or chlorine from lawn watering systems and various chemical contaminants from industries such as paper mills and petroleum refineries are especially corrosive If the unit is to be installed in an area where contaminants are likely to be a problem special attention
43. it of temp is F 5 1 Defrosting procedure SW1 1 OFF SW1 2 OFF heat pump mode yes Y record TpO after compressor on for 8 min no Check and reconnect yes 1 Is Tp pipe temp lt 35 6 for 10 sec yes 30min gt the compressor no 60min gt the compressor no runtime gt 15min runtime gt 30min 90min gt the compressor runtime gt 60min no ym yes E Tp Tp0 10 4 for 3 min peer TETE for 3 min yes es yes 1 y o to defrost to defrost go to defrost 4 BOUM Y the compressor runtime 180min NO 180min gt the compressor NO 120 min gt the compressor runtime 120min runtime gt 90 min es y yes yes go to defrost Tp Tp0 lt 26 6 for 3 min Tp Tp0 lt 23 for 3 min or Tp lt 10 4 for 3 min or Tp lt 10 4 for 3 min yes yes go to defrost go to defrost 5 2 Defrosting procedure SW1 1 ON SW1 2 OFF heat pump mode yes T record TpO after compressor on for 8 min Check and reconnect yes Is Tp pipe temp 35 6 for 10 sec yes Y 30min gt the compressor no 45min gt thecompressor no the compressor runtime gt 15min runtime gt 30min runtime gt 45min yes yes yes
44. losed contacts Fig 10 5 ELECTRICAL CHECKS 1 BE SURE ALL THE ELECTRICAL POWER IS OFF TO THE COMPONENT BEING CHECKED 2 Remove at least one wire from the component being checked 3 Measure the resistance of the holding coil with an ohmmeter A A specific resistance indicates a good holding coil B Infinite cc resistance indicates a relay with an open holding coil REPLACE the defective relay with an appropriate service part 4 Measure the resistance across the normally closed NC relay contacts A The resistance should be zero 0 ohms B If the resistance is more than 0 2 ohms the contacts are pitted REPLACE this relay with an appropriate service part 5 Measure the resistance across the normally open NO relay contacts A The resistance should be Infinite cc B Ifthe resistance isn t Infinite REPLACE this relay with an appropriate service part MECHANICAL CHECKS In relays mechanical faults are few But check relay body for signs of physical damage AIR FLOW Indoor coil air flow in any air conditioning system is critical Too much air and the system will not be able 27 B a e Central Air Conditioning Model Heat Pump HR13 D2 to suffers lack of dehumidify in cooling insufficient air flow while cooling may result in coil freeze up excessive dehumifification and lost capacity Checking air flow is the most important diagonistics a service technican can perform Instructions are rrovided to s
45. mostat and subbase m Correct line voltage supplied to indoor and outdoor units m Proper equipment ground to the electrical panel TS Correct control voltage at outdoor unit and transformer adequate for all control voltage loads opm os Proper disconnect switches and breakers for indoor and outdoor units EE Correct wire size for both indoor and outdoor units 24 Ha lef Central Air Conditioning OUTDOOR UNIT INSTALLATION TER Unit level with proper clearances for air flow and service m Proper elevation of outdoor unit e Solid pad n Coil free from dirt and debris ne Unit charged according to manufacturer s instructions Sos Zeg No evidence of refrigerant leaks REFRIGERANT LINES Proper length according to manufacturer s instructions m Proper size according to manufacturer s instructions SERERE Ud Large vapor line insulated No inadvertent oil traps and proper sloping No kinks or restrictions m No evidence of refrigerant leaks INDOOR UNIT INSTALLATION G ss Adequate clearances for air flow and service DET Proper supply and return air duct size and design Air ducts sealed to prevent leakage m Correct filter s External static pressure inches W C iren ice Proper air flow about 400 CFM per ton Fee cs Correct indoor coil and accessories NI No evidence of refrigerant leaks ETETE Condensate line piped with trap and vent ee Horizontal drain pan installed in horizontal applications EE Auxilia
46. n a smooth surface to remove the mounting grommets and sleeves for use with the new compressor D Prevent any contamination from entering the refrigerant lines 5 Conduct an acid test on the oil from the failed compressor A Secure a generous sample of oil from the failed compressor B Follow the oil test kit instructions to determine the degree of compressor burn out Asa general rule oil with a test number less than 0 05 indicates a mild burn out Oil with a test number greater than 0 05 indicates a severe burn out Some oil test kits indicate severity by color change As a guide burn out classifications are as follows oil clear no color the compressor may have had a mechinial failure and not a burn out oil clear slight color the compressor may have had a mild burn out oil very dirty strong odor test gt 0 05 the compressor may have had severe burn out Note Dispose of any contaminated refrigerant oil in accordance with all environmental regulations and procedures 6 Use the following procedures with units suspected of having mild to severe burn outs A After compressor removal insert a clean lint free swab into the system s suction and discharge lines to determine the extent of contamination B If contamination is noted for a considerable depth consider replacing the lines with new tubing C Confirm that the new compressor has no shipping damage The line connections must come sealed from the factory Verify that th
47. ng for SW1 1 SW1 2 when out of factory OFF OFF 2 3 Combinatoin of SW1 3 SW1 4 OFF OFF current protection value 1 OFF ON current protection value 2 ON OFF current protection value 3 ON ON current protection value 4 The above current values are set when the equipment is shipped from factory and they will be different values for different models For the relationship between the dip switch setting and the compressor winding circles accross CT please refers to the wiring diagram with the unit 3 Parameters value of temp sensors 3 1 Outdoor coil temp sensor R25 5K 2 B25 50 3450K with copper terminal T F Rnom K9 TCF Rnom K TCF Rnom K9 TCF Rnom K T F Rnom K9 4 47 12 28 4 19 39 60 8 7 661 93 2 3 368 125 6 1 667 2 2 45 17 30 2 18 39 62 6 7 295 95 3 23 127 4 1 608 0 4 43 24 32 17 45 64 4 6 949 96 8 3 098 129 2 1 551 1 4 41 35 33 8 16 55 66 2 6 622 98 6 2 973 131 1 457 3 2 39 49 35 6 15 7 68 6 313 100 4 2 845 132 8 1 445 5 37 68 37 4 14 89 69 8 6 021 102 2 2 741 134 6 1 895 6 8 35 92 39 2 14 13 71 6 5 744 104 2 633 136 4 1 347 8 6 34 21 41 13 41 73 4 5 482 105 8 2 536 138 2 1 301 10 4 32 56 42 8 12 73 75 2 5 235 107 6 2 432 140 1 257 12 2 30 37 44 6 12 08 77 5 109 4 2 339 14 29 44 46 4 11 47 78 8 4 778 111 2 2 25 15 8 27 57 48 2 10 9 80 6 4 567 113 2 165 17 6 26 57 50 10 35 82 4 4 36 114 8 2 084 19 4 25 22 51 8 9 837 84 2 4 179 116 6 2 006 21
48. nings that gain heat from the surrounding air and quantifying that heat gain The heat calculation also calculates the extra heaty load caused by sunlight and by humidity removal These factors must be considered before selection an air conditioning system to provide year round comfort The Air Conditioning Contractors of America ACCA J Manual method of load calculation is one recognized procedure for determining the cooling load The cooling load calculation determines the unit size There are two capacities that enable the equipment to provide comfort The first is sensible capacity Sensible heat is the heat energy measured on the dry bulb thermometer 11 B a ie Central Air Conditioning Model Heat Pump HR13 D2 The second form of heat is called latent heat This is heat held by the moisture in the air Removing this moisture does not affect a thermometer However removing the latent heat in the air greatly increase comfort A properly sized unit removes both forms of heat producing a comfortable conditions An oversized system cycles on and off quickly and does not properly remove humidify producing uncomfortable The indoor and outdoor equipment combination should be matched by the manufacturer and based on engineering data After the proper equipment combination has been selected satisfying both sensible and latent conditioning requirements the system must be properly installed Proper installation with cerefully distributed air
49. nit According to the national electric code Electrical installation consists of power supply wiring to the condensing unit and control wiring between thermostat indoor unit and the condensing unit All wiring must be in accordance with National Electrical Code and or local ordinances that may apply See unit wiring diagram furnished with this instruction The condensing unit rating plate and the tables of Physical and Electrical Specifications Outdoor Units Table 2 1 and 2 2 provide pertinent data necessary for the selection of proper size electrical service and over current protection devices Table 8 3 provides data on the minimum copper wire size as a function of supply wire length and circuit ampacity 20 B a je Central Air Conditioning Model Heat Pump HR13 D2 Copper Wire Size AWG 1 Voltage Drop Supply Circuit Supply Wire Length Ft Ampacity 50 100 150 200 15 14 10 8 6 20 12 8 6 4 25 10 8 6 4 30 10 6 4 4 35 8 6 4 3 40 8 6 4 2 45 6 4 3 2 50 6 4 3 1 Table8 3 Minimum Wire Size Based on N E C for 60 C Type Copper Conductors Below 100 Ampacity The installer must be familiar with the location of the over current protection properly size for this this application and the proper procedure for disconnecting power service to the unit The location of the disconnect device must be in accordance with local codes The outdoor unit control wiring requires a 24
50. ns and Installation Unt Height f 82678 2678 26 7 8 Dimensions With am nmw am nm inches em 244 am 2414 __ 44 Cubic Volume Curt Lee ane TI o ae 1094 Refrigerant ja Max Vertical Metering device Piston size Cooling heating Orifice 057 051 Refrigerant Type Charge Oz Note 2 R 22 104 24 Min Clearances 10 sides 18 service 167 0 172 0 189 0 207 0 183 0 187 0 205 0 222 0 RI UL cUL UL cUL UL cUL UL cUL Basiloid 32 gt IUIZI lt AGE 5 2 Es jra S S 5 2 S E lt m o erformance Certification afety Approvals SERI a 9 O IS 5 9 4 2 lt 2 no 0 Caron Height Pp 28 1 2 28 1 2 28 1 2 32 Dimensions Width 26 7 8 26 7 8 26 7 8 26 7 8 Depth 26 7 8 26 7 8 26 7 8 26 7 8 Cubic Volume Cu Ft 11 92 11 92 11 92 13 38 Warranty Haier Brand Only Parts Compressor Noise level dB A Notes 1 120 second fan delay for air handler 2 R 22 Charge for the outdoor unit with matching indoor unit and 25 line set o a a B a ie Central Air Conditioning Model Heat Pump HR13 D2 3 SAFETY PRECAUTIONS CAUTION please read all instructions prior to installing operating maintaining or repairing the product WARNING THE MANUFACTURER S WARRANTY DOES NOT COVER DAMAGE TO CAUSED BY THE USE OF ANSUTHORIZED COMPONENTS OR ACCESSORIES THE
51. nt The valves provide a seal between high and low pressure sides of the system If the valves are damaged the compressor s function and efficiency is reduced Reciprocating type compressor for HR18 24 deeg Ve type compressor for HR30 36 ig 4 Generally liquid refrigerant is suspected if valve damage occurs Some compressors can tolerate the presence of small amounts of liquid refrigerant in the return gas but this condition must be avoided through proper refrigrant control Returning refrigerant cools the compressor motor and surrounding the motor with low pressure gas gives it the name of low side shell compressor The scroll compressor used a helix similar in shape to a snail shell to move refrigerant When paired within a similar stationary helix the moving helix rotates so that the space between the two constantly decreases as the gas moves toward the center of the Scrolls The returning refrigerant gas first cools the motor then flows into the suction intake of the compressor scroll The discharge gas leaves from the center of the helix and exits the compressor The lower part of the shell should be cool to the touch Current single phase units use two types of compressors The design of the two compressors types is quite different But they function the same way Scroll units do not need start components or crank case heaters The reciprocating compressor may need both Both types benefit from using a time delay time delays preven
52. nts may be field or factory installed 2 If LPS and or HPS not installed or removed a jumper wire must be present across connector CNS of the defrost control board DFC for system to operate 3 For proper system operation consult indoor unit and outdoor unit installation instructions to confirm system match up and blower speed selection 4 Alternate double pole contactor used on some systems 5 Only one start assist method to be used at a time consult outdoor unit installation instructions for application information Use only factory approved accessories 6 Optional OFM components may connect capacitor common and motor common for reciprocating compressor there may have crankcase heater consult outdoor unit installation instructions for details Select the running capacitor one or dual and connect If IFM or OFM only have one capacitor wire connect Com wire to capacitor 7 To protect equipment from operation at low outside ambient temperatures connect outdoor unit terminal T and equipped indoor thermostat terminal T as shown 8 To activate electric heat circuit during defrost cycle connect outdoor W terminal to available indoor heat circuit W or W2 9 Indoor unit shipped without optional electric heater kit To install optional heater kit remove power pig tail up to 9 pin plug Install heater kit and connect with mating 9 pin plug Run system power connections directly to electric heater kit power terminals Consult heater kit installation instructi
53. oling DISCHARGE TEMP SENSOR A SERVICE PORT REVERSING VALVE SERVICE VALVE AS K LOW PRESSURE ACCUMULATOR SERVICE PORT SERVICE PORT h DEFROSED SENSOR EVAPORATOR CONDENSER 4 N DOOR COIL CHECK VALVE m m ORIFICE Bi Directional Filter CHECK VALVE ORIFICE Drier optional DISTRIBUTOR SERVICE VALVE DISTRIBUTOR OUTDOOR COIL Heating DISCHARGE TEMP SENSOR SERVICE PORT REVERSING VALVE SERVICE VALVE SERVICE PORT gee PORT H DEFROSED SENSOR CONDENSER 4 EVAPORATOR CHECK VALVE CHECK VALVE ORIFICE ORIFICE Bi Directional Filter DISTRIBUTOR Drier optiona SERVICE VALVE DISTRIBUTOR INDOOR COIL N N OUTDOOR COIL Figure 7 Heat Pump Refrigerant Circuit B i a ie Central Air Conditioning Model Heat Pump HR13 D2 This product is designed and manufactured to permit installation in accordance with National Codes It is the installer s responsibility to install the product in accordance with National Codes and or prevailing local codes and regulations The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations The United States Environmental Protection Agency EPA has issued various regulations regarding the introduction and disposal of refrigerants from this unit Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines Because these regulations are subject to revis
54. ons for complete details Note The diagram wiring of the fan motor maybe have some difference from the real parts due to different types of fan motor the detailed information can refer to the fan motor nameplate Outdoor Wiring Diagram HR18D2VAR HR36D2VAR 40 B a je Central Air Conditioning Model Heat Pump HR13 D2 Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com
55. or every 10 of line 8 6 Line Insulation Suction line must be insulated in order to prevent condensation from forming on the piping and to reduce heat gain from the surrounding air Generally 3 8 wall thickness of Armaflex or equivalent is satisfactory In severe applications hot high humidity areas greater thickness may be required Apply the suction line insulation by sliding it on the sealed tubing before cutting and making connections B i a je Central Air Conditioning Model Heat Pump HR13 D2 Liquid lines do not necessarily need insulation however if they are run in high ambient spaces such as kitchens boiler rooms hot attics or on the roof then they should be insulated as well Make sure to use proper size copper tubing for the liquid line to prevent liquid refrigerant flashing Keep the vapor line and liquid line seperated To prevent an undesirable heat transfer and capacity loss Refrigerant Line Sizing Check the following table Table 8 1 for correct suction and liquid line sizes for any combination of the unit size and the maximum refrigerant line length Refrigerant Line Sizing Refrigerant Line Length Ft Unit Size 0 24 25 49 50 74 Ton Line Outside Diameter In Suction Liquid Suction Liquid Suction Liquid 15 3 4 3 8 3 4 3 8 718 1 2 2 0 3 4 3 8 3 4 3 8 718 1 2 2 5 3 4 3 8 3 4 3 8 7 8 1 2 3 0 7 8 3 8 11 8 3 8 11 8 1 2 3 5 7 8 3 8 11 8 3 8
56. or the observed temperature A The system pressure is above the chart pressure Capital letters Non condensales are present air and or moisture ACTION Remove and recover the refrigerant Evacuate the system and charge with new and correct refrigerant B The system pressure is below the chart pressure Capital letters A mixed refrigerant is present ACTION Remove and recover the refrigerant Evacuate the system and charge with new and correct refrigerant COMPRESSOR REMOVAL PROCEDURES USE THESE PROCEDURES ONLY WHEN YOU HAVE POSITIVELY DETERMINED THAT THE COMPRSSOR HAS EXPERIENCED A MECHANICAL AND OR ELECTRICAL FAILURE CAUTION After a seveer motor burn out the products of the burn out may be acidic The technician should wear rubber gloves and eye protection to prevent injury when testing refrigerant oil Use the following procedure for compressor removal ONLY after determining that the compressor has failed 1 DISCONNECT THE MAIN POWER SOURCE TO THE UNIT AND LOCK THE DISCONNECT SWITCH IN THE OPEN POSITION 2 Disconnect the electrical wiring at the compressor identifying each wire and its location 3 Remove the refrigerant charge from the entire system using proper recovery procedures 30 B i a ie f Central Air Conditioning Model Heat Pump HR13 D2 4 Remove the failed compressor A Unsolder the suction and discharge lines at the compressor stubs B Remove the compressor hold down bolts C Place the failed compressor o
57. ping and valve opening procedure are listed below 18 B i a ie Central Air Conditioning Model Heat Pump HR13 D2 1 Tubing should be cut square Make sure it is round and free of burrs at the connecting ends Clean the tubing to prevent contamination from entering the system 2 Make sure that both refrigerant shutoff valves at the outdoor unit are closed 3 Push the tubing into the fitting until it stops This prevents flux from getting into the system 4 Remove the cap and Schrader valve core from the service port to protect the valve seals 5 Wrap a wet rag around the valve stub before brazing 6 Braze the joints of interconnecting piping purge piping with dry nitrogen through the shutoff valve port while brazing 7 After brazing quench with a wet rag to cool the joint Reinstall the Schrader core in the valve if removed for brazing 8 Pressurize the lines to 150 psi maximum with dry nitrogen Check for leaks at all joints with liquid detergent If a leak is found repair it after removing the nitrogen Repeat the process and re check 9 Do not purge the lines with refrigerant Evacuation All refrigerant systems must be evacuated to a deep vacuum to remove all noncondensible gases and moisture prior to charging the system Air in a system increases condensing pressure which increases power consumption and reduces performance The presence of moisture in a system leads to premature failure Proper evacuation assures a dry uncon
58. r open circuit C Replace the contactor if any fault is noted 5 WITH THE ELECTRICAL POWER OFF remove all power wires from the compressor terminals MARK THE ORIGINAL LOCATION OF EACH WIRE A Use an ohmmeter set for the highest scale to check for grounding between compressor motor terminals and a good clean ground such as the compressor shell or copper line B The resistance from any terminal to ground should exceed 1 000 000 ohms 6 Use an ohmmeter set for the lowest scale and check the continuity of the motor windings These ohm values are less than ten ohms and in some cases less than one ohm A The ohm reading from the RUN terminal to common terminal is the lowest reading measured between compressor terminals approxiamtely 1 ohm 28 B i a ie Central Air Conditioning Model Heat Pump HR13 D2 B The ohm reading from the Start TERMINAL TO COMMON TERMINAL will be the middle ohm value measured between the terminals and be approximately 2 0 to 3 0 ohms C The ohm reading from the Start TERMINAL TO Run terminal will be the highest ohm value of the three measurements and will be approximately the sum of the first two measurements EXAMPLE A Run to Common 1 0 Ohms Start to Run 3 0 Ohms Start to Common 4 0 Ohms Conclusion compressor motor does not have open or shorted wincings B Run to Common 2 Ohms Startto Run 3 0 Ohms Start to Common 2 Ohms CONSLUSION COMPRESSOR COULD HAVE AN OPEN INTERNAL OVERLOAD ALLOW T
59. ressor Connect the high pressure gauge to a service port that reads high pressure 2 With the unit operating front seat close the liquid line service valve Observe the gauges The suction pressure should fall The high pressure should also fall slightly If the discharge pressure rises above 400 psi Shut off about outdoor unit 3 SHUT OFF THE COMPRESSOR WHEN THE SUCTION PRESSURE DROPS TO 3 5 PSI POSITIVE PRESSURE DO NOT OPERATE THE COMPRESSOR WITH A NEGATIVE SUCTION PRESSURE OR IN A VACUUM 29 B i a je Central Air Conditioning Model Heat Pump HR13 D2 4 After pump down and compressor stops observe the suction pressure on the compound gauge A The suction pressure holds as steady pressure this is a normal condition B Suction pressure rises above the stopping point but then stops and holds steady Some refrigerant finally evaporating in the coil and registering on the gauge This is the normal condition C Suction pressure conditions rise and eventually equalizes with the observed pressure on the high pressure guage Abnormal condition Refrigerant is leaking from the condenser coil Causes Leaking liquid line valve leaking discharge check valve scroll compressors only leaking compressor valves ACTION Determine the causes and correct it D Unable to reach the 3 5 PSI level for suction pressure This is an abnormal condition Refrigerant is leaking from the condenser coil Causes Leaking liquid line valve leakin
60. ring Consideration be given so that operating sounds will not disturb owner or neighbors Location with no risk of combustible gas leakage Location where natural water drainage does not collect around the unit Location where roof runoff does not pour directly on the unit Provide gutters or other shielding at roof level Avdid locating the unit in an area where excessive snow can accomulate or drifting occur Locate unit on a level concrete slab or prefabricate pad To prevent transmission of noise or vibration slab should not be connected to building structure Some sort of sound absorbing material such as rubber and cork pad should be placed between the condenser and the slab For rooftop application make sure the building construction can support the weight and that proper consideration is given to the weather tight integrity of the roof The condensing unit contains moving parts and can vibrate so sound transmission is also a consideration in rooftop applications WARNING Install the unit securely in a place that can bear the weight of the unit When installed in an insufficiently strong place the unit could fall causing injury 8 4 UNIT CLEARANCES 18 Min Service Access 18 Min Fig 8 1 The minimum clearances for the unit are shown in Fig 8 1 Condenser air enters from all 4 sides Air discharges upward from the top of the unit Refrigerant line and electrical connections are made from the service
61. ry drain pan installed in horizontal applications EN Auxiliary condensate line installed in horizontal application CAPACITOR ELECTRICAL CHECK Model Heat Pump HR 13 D2 WARNING ANY CAPACITOR SHOWING SIGNS OF LEAKAGE OR BULDGING MUST BE REPLACED IMMEDIATEDLY DO NOT OPERATE THE AIR CONDITIONING SYSTEM WITH A CAPACITOR SHOWING THESE SIGNS Single phase compressors require a run capacitor connected to the run and start windings This puts the two windings out of phase from one another and allows the compressor motor to start Use a capacitor tester to determine if the capacitor dielectric has broken down or if the MFD value has changed If a capacitor analyzer is not available use a quality ohmmeter to check the resistance between the capacitor plates 1 Set the ohmmeter to the highest scale available 2 Discharge the capacitor by shorting the terminals with the blade of a screwdriver having an insulated handle 3 Place the Ohmmeter probes on the capacitor terminals and observe A lf the meter pointer moves towards zero then gradually moves to higher ohm values the capacitor is GOOD B Ifthe meter pointer does not move the Open capacitor is open and should be REPLACED C Ifthe meter pointer goes toward ZERO ohms and stays at or near zero the capacitor is shorted and should be replaced 4 Replace any failed capacitor with a capacitor having the same MFD and voltage rating COMPRESSOR START KITS 25 B la a le
62. t C Y terminal have 24 V AC if no 24 V AC then check the thermostat or reset the setting temp if have 24 V AC check if the C Y and P1 P3 connection wire cut off or fasten loosely if cut off then change the parts The coil of outdoor unit Contactor does not have 24V AC power 32 Haier Central Air Conditioning Condenser fan runs compressor doesn t Run or start capacitor defective Replace Loose connection Check and tighten all connections Compressor stuck grounded or open motor winding open internal overload Wait for 2 hours for overload to reset Replace compressor if still open Low voltage condition At compressor terminals voltage must be within 10 of rating plate volts when unit is running Low voltage condition Add start kit components Compressor runs Run capacitor defective Replace Condenser fan Loose connection Check and tighten all connections doesn t Fan stuck grounded or open motor Wait for 2 hours for overload to reset winding open internal overload Replace Fan if still open Low voltage condition At compressor terminals voltage must be within 10 of rating plate volts when unit is running Defective overload protector Replace check for correct voltage Refrigerant undercharge Add refrigerant Register sweat Low evaporator airflow Increase blower speed or reduce restriction replace air filter Restriction
63. t thermostat short cycling and momentary power interruptions from damaging the compressor B Ha ef Central Air Conditioning Model Heat Pump HR13 D2 Both compressor types are protected internally against over current and over temperature conditions Some scroll compressors have an additional thermostat mounted externally in series electrically with the contactor coil FAN AND BLOWER MOTORS Fig 4 2 and Fig 4 3 The outdoor component of split system contains an fan motor These PSC permanent split capacitor motors are single speed and drive a propeller fan The motor mounts to the unit top with the shaft up This fan pulls outdoor air through the outdoor coil Fan Fig 4 2 To access the condenser fan or motor carefully remove the unit top a service loop is provided on the motor wiring for easier access Fan and motor assembly Fig4 3 METERING DEVICES Fig 4 4 Flow Check Pistons One type of refrigerant metering device is the flow check piston It has two functions First it acts as a refrigerant metering device controlling refrigerant flow into the evaporator Second it acts as an open check valve when refrigerant flows in the opposite direction When refrigerant enters the device from the square end the piston seats and forces all refrigerant throug the carefully sized hole in the center of the piston This orifice functions as a metering device controlling p the amount of refrigerant flow with flow in the
64. taminated system Recommended Evacuation Procedure 1 Connect vacuum pump to both liquid and suction valve service ports 2 Evacuate the interconnecting tubing and indoor coil to a level of 500 microns or less or for a minimum of 30 minutes Close the valve to the vacuum pump and wait 15 minutes The vacuum should not rise above 800 microns If unable to obtain 500 microns or vacuum rises above 800 microns after a 15 minutes period discontinue evacuation pressurize and check for leaks Repair any leaks found and repeat the step 2 3 Close valve to the vacuum pump and stop pump 4 When sure of a tight well evacuated system charge with refrigerant 8 7 Charging the System For systems with capillary tube or fixed orifice metering device Before checking the system charge make sure that the outdoor unit and indoor coil are an approved match system For best result the indoor conditions should be within 2 F of the desired comfort conditions WARNING Do not vent refrigerant to the atmosphere It is a violation of federal law to do so If the refrigerant needs to be removed from a system to correct the system charge always use a recovery or recycling device WARNING Service refrigerant carefully high pressure are present 1 Fully open both shutoff valves 2 Connect service gage manifold to the valve service ports being sure to evacuate lines 3 Startup the system Run system at least 10 minutes to allow pressure to stabilize 4
65. ude the automatic reset internal overload in the fan motor and the compressor automatic reset internal overload Such controls are not serviceable but their operation may influence service troubleshooting For example the compressor internal overload may stay open for several hours A technician may incorrectly diagnose this as an open compressor winding HIGH PRESSURE CUT OUT SWITCH optional Fig 5 1 The high pressure cut out is a pressure activated switch It opens an electrical circuit when the refrigerant pressure exceeds a pre determined limit of 440 to 460 p s i g When pressure becomes normal the switch restores automatically Fig 5 1 B i a ie Central Air Conditioning Model Heat Pump HR13 D2 RELAYS Relays provide a method for control switching Relays may switch either low 24VAC or line voltage Generally relays used in air conditioning use 24VAC coils Contact voltage may be either low orline voltage COMPREESSOR CONTACTOR The coil uses 24 volts but the contacts carry line voltage The heater contactor is a large relay which controls the compressor and the outdoor fan operation Some contactor use single pole contacts while others use 2 pole or 3 pole contacts Single pole contactors break only one side ofthe power feed to the compressor and outdoor fan The other side remains connected to the power source The 2 pole or 3 pole contactor breaks power to all sides of the compressor and outdoor fan CAUTION

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