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HR36D2VAE(US) 13 SEER, 3.0 Ton, Heat Pump Service Manual

Contents

1. Correct filter s External static pressure inches W C Proper air flow about 400 CFM per ton O Correct indoor coil and accessories No evidence of refrigerant leaks Condensate line piped with trap and vent Horizontal drain pan installed in horizontal applications Auxiliary drain pan installed in horizontal applications nn Auxiliary condensate line installed in horizontal application CAPACITOR ELECTRICAL CHECK 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 Setthe 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 f 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
2. Distributor assy Fig 4 4 B Central Air Conditioning Model Heat Pump HR 13 R410A 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 base 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 9 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
3. lef Central Air Conditioning Model Heat Pump HR 13 R410A 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 3 7Psi 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 failure can be resumable 36 m Ha Central Air Conditioning Model Heat Pump HR13 R410A 4 6 CN7 discharging temp sensor connector the discharging temp sensor connected dis
4. Unit Distance Ft Indoor above Outdoor Unit 50 50 50 50 50 50 50 Refrigerant Connection Type Orifice 055 TXV Orifice 059 049 Orifice TXV 053 Orifice TXV 053 Orifice 078 062 Orifice 085 071 Orifice TXV 078 a e Central Air Conditioning Model Heat Pump HR13 R410A Model Number Comments Model Status Refrigerant Type Charge Oz Note 2 Min Clearances 10 sides 18 service 10 sides 18 service 10 sides 18 service 10 sides 18 service 10 sides 18 service 10 sides 18 service 10 sides 18 service Weight Ibs Agency Approvals Packaging Shipping 1 1 4 4 Caton 02 2 4 2 3 O 37 1 2 41 3 8 45 5 16 Width 26 7 8 26 7 8 26 7 8 26 7 8 32 1 2 32 1 2 32 1 2 Dimensions Depth 26 7 8 26 7 8 26 7 8 26 7 8 32 1 2 32 1 2 32 1 2 Cubic Volume Cu Ft Warranty Haier Brand Only Notes 1 120 second fan delay for air handler 2 R 410A Charge for the outdoor unit with matching indoor unit and 25 line set B Central Air Conditioning Model Heat Pump HR 13 R410A 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 USE OF SUCH UNAUTHORIZED COMPONENTS OR ACCESSORIES MAY ENDANGER LIFE AND PROPERTY THE MANUFACTURER DISCLAIMS ANY RESP
5. Central Air Conditioning Model Heat Pump HR 13 R410A 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 on 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 with a test number greater than 0 05 indicates a severe burn out Some oil test kits indicate severity by color change Q 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 20 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 contamin
6. Central Air Conditioning Model Heat Pump HR 13 R410A Piston sizes and indoor fan speed Note The piston placed in the accessory package with the outdoor unit is meant to be used in the indoor coil for cooling operation Outdoor Outdoor Indoor model is model orifice size HR18D2VAE HB2400VD2M20 KVEK TXV 86K 07 08 HR60D1VAE HB6000VD1M22 T 078 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 correct air 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 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 be lowered dramatically through bad planning or workmanship In cooling
7. HR24D2VAR HR48D2VAR HR24D2VAE HR48D1VAE 2 flash Vent suction sensor short circuit OFF OFF OFF HR30D1VAR HR oDiVAR HR30D2VAR HR60D2VAR HR30D2VAE HReopivaE 2 2 flash LPS amp HPS open circuit Vo V2 4 flash CT sensor out of max range 1 Confirm defrost control board DFC dip switch settings and CT application for system selection as shown in adjacent table Optional components may be field or factory installed 2 If LPS and or HPS not installed or removed a jumper wire must be present across connector CN8 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 activate electric heat circuit during defrost cycle connect outdoor W terminal to available indoor heat circuit W or W2 8 Indoor unit shipped witho
8. Haier Central Air Conditioning SERVICE MANUAL Models HR18D2VAE HR24D2VAE HR30D2VAE HR36D2VAE E A m asa Eoo _ T a Ec LII 1 HR42D1VAE HR48D1VAE HR60D1VAE Features Efficient performance and economical operation Benchmark hermetic compressor design Haier Hi Efficiency aluminium fin and copper tube design Compact design for D2 models Durable construction Quick easy installation and service Heat pump R410A refrigerant Powder coated full metal jacket Manual code SYJS 018 09REV 1 Edition 2010 02 22 B a Central Air Conditioning Model Heat Pump HR13 R410A CONTENTS 1 DESCRIPTION OF PRODUCTS amp FEATURES 3 2 PHYSICAL AND ELECTRICAL SPECIFICATIONS 5 JL SAFETY PRECAUTION u u u u uu usss 8 4 SYSTEM COMPONENTS AND FUNCTIONS 8 5 ELECTRICAL CONTROL 10 D APPLICATION u EN 11 7 REFRIGERANT DIAGRAM 13 8 INSTALLATION INSTRUCTIONS 13 9 MAINTENANCE 85 23 10 SERVICE AND TROUBLESHOOTING 23 11 WIRING DIAGRANMNS 40 The equipment detailed
9. C If the 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 m Central Air Conditioning Model Heat Pump HR 13 R410A 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 com
10. 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 for 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 insulat
11. 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 24 Volt minimum 25 service from the indoor transformer as shown on the wiring diagram B Central Air Conditioning Model Heat Pump HR13 R410A 8 10 5 YSTEM 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 DPERATION SEQUENCE OF OPERATION In order to serv
12. 09 09 14 12 20 20 2 Jj Nominal RPM 100 2100 2105 100 0 71 X 96 100 j No of Slade SSS ee Zinc Coated Steel Zinc Coated Steel Zinc Coated Steel Plastic Steel Plastic CDI SE Steel Plastic Steel oie coil numer or 5 16 5 16 5 16 3 8 Grooved 3 8 Grooved 25 8 Exterior Appearance B a le f Central Air Conditioning Model Heat Pump HR13 R410A Model Number Comments Model Status Top cover Base pan Service panel ne 5 Coll a atd Wiregrll Removable Top Grill Assemby Yes Yes vse vs vs vse Yes High and Low Pressure Switches Yes Ys Yes Ys L Yes E Yes FilterDryer Ys Yes Ys Yes Yes ee ee ee m TN e e Re FanDelayKit vte i Ys Ys Ys Yes Yes Dimensions and Installation Unt Height 5038 5058 5058 5058 518 4 444 Dimensions Width 1 2414 2414 2414 2414 305 8 50558 5055 f inches Depth 2 2414 2414 2414 2414 358 5055 23058 Cubic Volume Cu FD 1054 1034 1034 1024 1 2 2272 2359 Max Refrigerant Line Lenath Ft Refrigerant Outdoor Line Max above Indoor Vertical
13. Is Tp pipe temp 35 6 for 10 sec yes 90min gt the compressor 30min gt the compressor no 60min gt the compressor no runtime gt 60min runtime gt 15min runtime gt 30min gi ye yes LE 0 lt 10 4 for 3 min Tp Tp Jor comun 0 lt 23 for 3 min yes yes yes o to defrost ado dde g go to defrost the compressor runtime 180min 180min the compressor _ 120 min gt the compressor runtime 120min runtime gt 90 min es 7 yes yes go to defrost Tp Tp0 lt 26 6 for 3 min Tp Tp0 lt 23 for 3 min OF TDS TOS 108 or Tp lt 10 4 for 3 min yes es go to defrost go to defrost 5 2 Defrosting procedure SW 1 1 ON SW1 2 OFF heat pump mode yes record TpO after compressor on for 8 min Check and reconnect yes Is Tp pipe temp 35 6 for 10 sec LE 30min gt the compressor no 49min gt thecompressor no the compressor runtime 15min runtime 30min gt 45 yes ym yes Tp Tp0 10 4 for 3 min a qon go to defrost ye ye go to defrost go to defrost Note The defrost action will be end when defrost has worked for 1
14. add filter drier High vapor pressure Recheck load calculation Defective compressor Fluctuating head and Air or non condensibles in system Recover refrigerant evacuate amp recharge vapor pressures Pulsing noise at Air or non condensibles in system Recover refrigerant evacuate amp recharge metering device or liquid line 33 m lef Central Air Conditioning Model Heat Pump HR 13 R410A Electric control board and function for central air conditioner Heat pump control board 1 Failure code k Note 1 2 second flash sycle indicates problem indication Failure 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 pipe sensor flash once 1 2 Compressor discharging temp sensor failure vent sensor flash twice 1 3 Pressure switch failure flash three times 1 4 Over current protection flash four times Indicator function When LED is used as failure indication refer to the failure code 34 B Central Air Conditioning Model Heat Pump HR 13 R410A 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
15. motor wiring for easier access D2 model D1 model 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 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
16. 0 minutes or when the piping temp arrives at or more than 50 F 38 B a Central Air Conditioning Model Heat Pump HR 13 R410A 5 3 Troubleshooting does the unit work properly does there show any default code no 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 yes check the resistance of pipe sensor whether at normal F normally between this range range 13K for 35 6 T and 37k for no replace pipe sensor yes does reversing valve work ok no replace reversing valve short the XT port see whether set pipe temp to about 32 F and use a ring to no defrost replace yes check system whether lack R410a 39 aie Central Air Conditioning Model Heat Pump HR 13 R410A 11 WIRING DIAGRAM Heat Pump Wiring Diagram 1LINE VOLTAGE FACTORY STANDARD OUTDOOR E UE i UNIT FIELD INSTALLED ELECTRIC HEATER KIT OPTIONAL i LOW VOLTAGE CMPR 1 FACTORY STANDARD FIELD INSTALLED OPTIONAL USE CONDUCTORS ONLY WARNING CABINET MUST BE PERMANENTLY GROUNDED AND ALL WIRING TO CONFORM TO I E C E C C E C C L C AND LOCAL CODES AS APPLICABLE i REP
17. 2 Function selection f an Dis ud 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 setting for SW1 1 SW1 2 when out of factory OFF OFF 2 3 Combinatoin of SW1 3 5 1 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 9 B25 50 3450K with copper terminal 32 3949 356 157 68 6313 1004 2845 1328 1445 L88 s92 104 1364 137 _ es sa 4 134i T4 1058 258 gee 1301 _ 140 1287 2 ms s ue we asm mm m em me em zom sia 2394 536 sos 1982 1 793 26 6 20 45 59 8 048 91 4 3514 123 8 1729 3 514 1 729 35 m
18. E VALVE 1 HIGH PRESSURE SWITQH N LOW PRESSURE SWITCH ACCUMULATOR A COMPRESSOR 7 SERVICE PORT SERVICE PORT pa DEFROST SENSOR E CONDENSER lt EVAPORATOR INDOOR COIL N OUTDOOR COIL DRIER DISTRIBUTOR SERVICE VALVE DISTRIBUTOR Figure 7 Heat Pump Refrigerant Circuit 14 B a Central Air Conditioning Model Heat Pump HR 13 R410A 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 revision 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 f
19. LACEMENT WIRE MUST BE THE SAME GAGE AND 208 230V 2 INSULATION TYPE AS ORIGINAL WIRE i 60Hz 1PH jj i COMPONENT CODES i BCR BLOWER CONTROL RELAY BCAP RUN CAPACITOR BLOWER MOTOR 1 CC COMPRESSOR CONTACTOR CCH CRANKCASE HEATER OPTIONAL CHS CRANKCASE HEATER SWITCH OPTIONAL i CMPR COMPRESSOR DFC DEFROST CONTROL BOARD 208 230V HPS HIGH PRESSURE SWITCH 60Hz 1PH i i LPS LOW PRESSURE SWITCH i i IBM INDOOR BLOWER MOTOR ODS OUTDOOR TEMPERATURE SENSOR OFM OUTDOOR FAN MOTOR RCAP RUN CAPACITOR COMPRESSOR RVS REVERSING VALVE SOLENOID STCAP START CAPACITOR OPTIONAL STRLY START RELAY OPTIONAL STRTH START THERMISTOR OPTIONAL TRAN TRANSFORMER 230 208 SELECTABLE corr i COLOR CODES i BK BLACK BL BLUE GY GRAY BR BROWN GR GREEN OR ORANGE PU PURPLE RD RED VI VIOLET WH WHITE YL YELLOW THERMOSTAT RESISTANCEL HEAT CONTROL LED Flash Codes LED illuminates during unit operation only Dipt Dip2 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 HRi8D2VAR HR42D2VAR HR18D2VAE HR42D1VAE Flash on off System in defrost operation Vo Vo 1 flash Pipe coil sensor open or short circuit OFF OFF HR24D1VAR HR48D1VAR
20. ONSIBILITY 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 refrigerant The valves provide a seal between high and low pressure sides of the system If the valves are damaged the compress
21. 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 3 in a return duct can cause a 5 loss in system capacity 3 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 vapor barrier results in duct sweating causing wet insulation does not insulated Heat transfer through poorly insulated systems can result in over 50 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 alon
22. ation 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 the 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 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 After leak testing recover any test refrigerant J Keep with A subpoints Evacuate through both high and low side connections to the
23. 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 closed 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 Aspecific 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 The resistance should be Infinite B Ifthe resistance isn t Infinite gt 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 R410A to suffers lack of dehumidify in coo
24. c Haier Blower unit 000 Btu h heater Eo code series configuration Unit width In component B 1 1st M Multi 17 17 432mm T TXV Generation direction 20 20 497mm E ECM 2 2nd V Vertical 22 22 bb9mm motor C 208 230V 3Ph A C coil Generation F TXV and 60Hz C 12SEER ECM motor D 460V 3Ph A C coil D 13SEER coil Table 1 1 Model number explanation outdoor unit Nominal SEER Design l l l capacity in Electric Designation Body style Reserved designation series 1000 Btuh A 10SEER B 11SEER 145 A 115V 1Ph 60Hz S C 12SEER 208 230V 3Ph 24 Generation Air condition D 13SEER 24000BTU h er E 14SEER D 460V 3Ph 60Hz standard 60 2 2nd F 15SEER V 208 230V 1Ph style 60000BTU h Generation G 16SEER 60Hz H 17SEER Y 575V 3Ph 60Hz 185 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 R410A 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 Facilitates
25. change the parts The coil of outdoor unit Contactor does not have 24V AC power 32 B a Central Air Conditioning Model Heat Pump HR 13 R410A Run or start capacitor defective Check and tighten all connections Condenser fan runs motor winding open internal overload Replace compressor if still open compressor doesn t Low voltage condition At compressor terminals voltage must be within 1096 of rating plate volts when unit is running Compressor runs Condenser fan doesn t Fan stuck grounded or open motor winding open internal overload Replace Fan if still open Low voltage condition At compressor terminals voltage must be within 1096 of rating plate volts when unit is running Increase blower speed or reduce restriction replace air filter High head Low device or filter drier vapor pressures High head High normal vapor 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 evaporator airflow Increase blower speed or reduce restriction Low vapor cool replace air filter compressor iced Operating below 65 F outdoors Add low ambient kit evaporator coil Moisture in the system Recover refrigerant evacuate amp recharge
26. connect 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 Central Air Conditioning Model Heat Pump HR 13 R410A Power supply and wiring 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 accom
27. connected 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 203 F for 3 minutes compressor will run 4 7 XT 4ime 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 7 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 BH a Central Air Conditioning Model Heat Pump HR 13 R410A 5 Defrostinopperation The unit of temp is F 5 1 Defrosting procedure SW1 1 OFF SW1 2 OFF heat pump mode yes Check and reconnect record TpO after compressor on for 8 min yes
28. erials 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 the 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
29. 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 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 mart
30. g 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 L 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 m Hoc Central Air Conditioning Model Heat Pump HR 13 R410A Cooling DISCHARGE TEMP SENSOR CHECK VALVE REVERSING VALVE SERVICE VALVE L HIGH PRESSURE AN Es PRESSURE SWITCH SWITCH ACCUMULATOR A COMPRESSOR l SERVICE PORT SERVICE PORT DEFROST SENSOR 4 EVAPORATOR gt d CONDENSER 4 N INDOOR COIL OUTDOOR COIL DRIER DISTRIBUTOR SERVICE VALVE DISTRIBUTOR Heating DISCHARGE TEMP SENSOR SERVICE PORT 174 e SE REVERSING VALVE SERVIC
31. he 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 or open circuit C Replace the contactor if any fault is noted 5 NITH 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 a Central Air Conditioning Model Heat Pump HR 13 R410A 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 Runto Common 1 0 Ohms Start to Run 4 0 Ohms Start to Com
32. 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 compressor 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 20 B a Central Air Conditioning Model Heat Pump HR 13 R410A 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 compres
33. ical 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 unit 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 Central Air Conditioning Model Heat Pump HR 13 R410A Copper Wire Size AWG 1 Voltage Drop
34. ice 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 CYCLE Mechanical The operation sequence is as follows 1 The compressor provides high pressure superheated refrigerant vapor 2 he 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 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 t
35. 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 necessary 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 m aie f Central Air Conditioning Model Heat Pump HR13 R410A 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 M unit RA _ capacity in Electric Electric Design Airflow Specifi
36. ion by sliding it on the sealed tubing before cutting and making connections 17 B a Central Air Conditioning Model Heat Pump HR 13 R410A 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 26 50 51 75 Liquid Suction Liqui 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 ens
37. lacement compressor might also failed or not operate at all WARNING THE FOLLOWING PROCEDURES SHOULD ONLY BE ATTEMPTED BY QUALIFIED SERVICE TECHICIANS EQUIPPED WITH PROPER TOOLS SAFTY PROCEDURES AND EQUIPMENT AND INSTRUMENTS 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 t
38. ling 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 show 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 VOLTS x AMPS x 3 414 CFM Electrical Heater ZZZ 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 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 rep
39. list of suggested test equipment This information can be uesed by the service technician to understand the installation and troubleshooting and operation of the currentfamilie of air conditioning The procedures in this section are generic in 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 conditions 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 Central Air Conditioning Model Heat Pump HR 13 R410A 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 refrige
40. m 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 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 W inch mm D inch mm eee 24 1 4 616 24 1 4 616 Dimensions 7 W inch mm D inch mm H inchpmm 42 48 H inch mm 60 spao eootyac Unit 30 5 8 779 30 5 8 779 36 1 8 917 40 1017 4411117 Shipping 32 1 2 825 32 1 2 825 37 1 21951 41 3 8 1051 45 5 16 1151 Table 6 1 B a
41. 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 include 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 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 530 to 570 p s i g When high pressure goes down to Cut in pressure that a pre determined limit of 440 to 480 p s i the switch will restore automatically Fig 5 1 B a Central Air Conditioning Model Heat Pump HR 13 R410A RELAYS Relays provide a method for con
42. mon 3 0 Ohms Conclusion compressor motor does not have open or shorted windings Run to Common 2 Ohms Start to Run 3 0 Ohms Start to Common 2 Ohms CONSLUSION COMPRESSOR COULD HAVE AN OPEN INTERNAL OVERLOAD ALLOW THE 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 o Ohms OPEN COMPRESSOR START WINDING REPLACE THE COMPRESSOR 7 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
43. mon 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 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 Hoa lef Central Air Conditioning Model Heat Pump HR 13 R410A 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
44. n 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 Compressor without pump function replace it Dirty filters Clean amp replace Indoor air blockage Check supply registers and return grills for blockage Air non condensable or moisture Recover refrigerant evacuate amp recharge system add filter drier Incorrect voltage At compressor terminals voltage must be within 1096 of rating plate volts when unit is running furnace trap operation of condensate pump 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 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 please check if it keep for 3 minutes ifso and P2 no output change the 3 minute timer board if keep time 3 minutes P2 no output if P1 P3 no24V first check the thermostat 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 connection wire cut off or fasten loosely if cut off then
45. ng 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 uncontaminated 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 Cha
46. o 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 then 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 aoe eae B a Central Air Conditioning Model Heat Pump HR 13 R410A 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
47. ollowing 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 Correct the thermostat and subbase Correct line voltage supplied to indoor and outdoor units Proper equipment ground to the electrical panel Correct control voltage at outdoor unit and transformer adequate for all control voltage loads TA Proper disconnect switches and breakers for indoor and outdoor units Correct wire size for both indoor and outdoor units 24 B a Central Air Conditioning Model Heat Pump HR 13 R410A OUTDOOR UNIT INSTALLATION Unit charged according to manufacturer s instructions VPE No evidence of refrigerant leaks REFRIGERANT LINES m Proper length according to manufacturer s instructions Proper size according to manufacturer s instructions s Large vapor line insulated No inadvertent oil traps and proper sloping mn No kinks or restrictions No evidence of refrigerant leaks INDOOR UNIT INSTALLATION Adequate clearances for air flow and service Proper supply and return air duct size and design Air ducts sealed to prevent leakage
48. or s function and efficiency is reduced Reciprocating type compressor for HR18 42 Reciprocating type compressor for HR48 60 Fig 4 1 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 reciprocating compressor may need start components and crankcase heater Both types benefit from using a time delay Time delays prevent thermostat short cycling and momentary power interruptions from damaging the compressor m lef Central Air Conditioning Model Heat Pump HR13 R410A 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
49. or 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 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 Dis
50. rant 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 happen 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 1 A good quality volt ohm meter Atwo channel temperature electronic thermometer A Magnetic Gauge capable of reading to 3 W C A refrigerant pressure Gauge manifold set A clamp on ammeter An electronic leak detector or bottle of soap suds micron meter not shown A vacuum pump capable of pulling to 1000 microns Refrigerant recovery recycling equipment COND vacuum pump Fig 10 1 Before beginning any troubleshooting procedure complete the f
51. ressor 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 16 B a Central Air Conditioning Model Heat Pump HR 13 R410A 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 AA A EZ BP A 7 A LE L LY PITCH SUCTION LINE TOWARD OUTDOOR UNIT 1 2 FOR EVERY 10 OF LINE INDOOR UNIT ABOVE OR LEVEL TO OUTDOOR UNIT OUTDOOR UNIT INDOOR UNIT LIQUID LINE INDOOR UNIT BELOW OUTDOOR UNIT Figure A Figure B B height of inverted loop above indoor unit e INVERTED LOOP J LIQUID LINE INDOOR UNIT 50 MAA OUTDOOR UNIT
52. rging 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 WARNINGI 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 gauge manifold to the valve service ports being sure to purge air out of gauge hoses 3 Startup the system Run system at least 10 minutes to allow pressure to stabilize 4 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 19 B a Central Air Conditioning Model Heat Pump HR 13 R410A System Superheat Ambient Return Air Temperature Temperature At Condenser Inlet F 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 electr
53. rigerant 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 for 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 a
54. sor 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 leaking 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 ref
55. 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 reclaimed 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 B a le f Central Air Conditioning Model Heat Pump HR 13 R410A 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 l 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 loose electrical Make sure mai
56. tart 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 openings 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 m Central Air Conditioning Model Heat Pump HR 13 R410A The second for
57. trol 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 or line 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 of the 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 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 Fig 5 2 START KITS OPTIONAL This special relay uses the EMF generated by the compressor start windings to take a s
58. ulate 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 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 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 comp
59. 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 0 T 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 B a le Central Air Conditioning Model Heat Pump HR13 R410A 2 PHYSICAL AND ELECTRICAL SPECIFICATIONS Specifications Subject to Change without Prior Notice Model Number Comments Model Status Performance Cooling Capacity Btu h Heating Capacity Btu h 8 3 Minimum Circuit Amps J 98 1 1 15 148 117 26 26 29 Maximum Overload Amps 20 55 90 95 40 440 k compressor Yes RLA Rated Load Amps
60. ure 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 piping and valve opening procedure are listed below 18 B a Central Air Conditioning Model Heat Pump HR 13 R410A 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 pipi
61. ut 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 instructions 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 40 B a Central Air Conditioning Model Heat Pump HR 13 R410A Sincere Forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com

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