background image

14

                                  Run or start capacitor defective                       Replace

                                  Loose connection                                             Check and tighten all connections.

Condenser fan runs,  Compressor stuck, grounded or open               Wait for 2 hours for overload to reset.

compressor doesn't   motor winding, open internal overload            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

                                  Incorrect voltage                                              At compressor terminals, voltage must be within 10% of rating

Compressor                                                                                        plate volts when unit is running.

short-cycling             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 in liquid line,                                 Replace defective components

 High head - Low     metering device or filter drier

vapor pressures         Flowrator piston size too small                        Change to correct size piston

                                  Incorrect capillary tubes                                   Change coil assembly

                                  Blocked outdoor coil                                        Clear away leaves and other debris

High head - High      Refrigerant overcharge                                    Correct system charge

 or normal vapor       Condenser fan not running                                Repair or replace

 pressures                  Air, non-condensibles or                                   Recover refrigerant, evacuate &

                                  moisture in system                                            recharge, add filter drier

Low head - High      Flowrator 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      Low evaporator airflow                                   Increase blower speed or reduce restriction - replace air filter

 compressor - iced    Operating below 65  F outdoors                      Add low ambient kit

evaporator coil          Moisture in the system                                    Recover refrigerant, evacuate & recharge, add filter drier

High vapor                Excessive load                                                 Recheck load calculation

pressure                     Defective compressor                                      Replace

Fluctuating head        Air or non-condensibles in system                  Recover refrigerant, evacuate & recharge.

and vapor pressures

Pulsing noise at         Air or non-condensibles in system                  Recover refrigerant, evacuate & recharge

metering device

or liquid line

                                  Power off or loose electrical connection         Make sure main switch is ON. Check and tighten all connections.

                                  Incorrect thermostat setting                             Set thermostat correctly

No cooling/heating   Defective contactor                                          Check for 24V at contactor coil.

                                  Open circuit breaker of blown fuses                Reset or replace

                                  Defective transformer                                      Check wiring - Replace it.

                                  Interconnecting low voltage wiring damage    Replace thermostat wiring

                                  Dirty filters                                                      Clean & 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

/Heating                    Incorrect refrigerant charge                              Charge correctly per instruction.

                                  Air, non-condensibles or moisture in system   Recover refrigerant, evacuate & recharge, 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

furnace                      Blocked condensate drain and "P" trap           Remove blockage

Symptom

Possible Cause

 Remedy

Defective four way valve

Check the valve coil or replace it

Table 7   T

r

ouble

-

shooting guide

Summary of Contents for HR18D2VAE

Page 1: ...No 0150505381 D HR18D2VAE HR24D2VAE HR30D2VAE 13 SEER 1 5 to 5 0 Tons HR36D2VAE HR42D1VAE HR48D1VAE HR60D1VAE ...

Page 2: ... vary due to the passage of new laws we suggest that any work on this unit be done by a certified technician Should you have any questions please contact the local EPA office The manufacturer s warranty does not cover any damage or defect to the air conditioner caused by the attachment or use of any components accessories or devices other than those authorized by the manufacturer into onto or in c...

Page 3: ...eat Pump Improper installation can result in unsatisfactory operation or dangerous conditions Carefully read this manual and any instructions packaged with separate equipment required to make up the system prior to installation Give this manual to the owner and explain its provisions The owner should retain this manual for future reference H R 24 D 2 V A E Example HR24D2VAE Design series 1 1st Gen...

Page 4: ... 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 3 0 3 4 1 4 2 4 1 4 2 1 7 7 6 1 6 6 1 6 8 1 6 3 8 5 0 3 8 5 0 3 7 1 9 9 7 7 9 7 7 0 4 8 5 0 3 8 5 0 3 7 1 0 1 9 7 7 9 7 7 4 4 8 5 0 3 8 5 0 3 7 1 1 1 9 7 7 9 7 7 2 3 8 7 6 2 8 7 6 2 3 1 8 2 8 6 2 8 6 2 3 8 7 6 2 8 7 6 2 3 1 8 2 8 6 2 8 6 2 3 8 7 6 2 8 7 6 2 3 1 8 2 8 6 2 8...

Page 5: ...500 56638 55775 54913 54050 ARI data of indoor Cooling Capacity with different outdoor temperature Outdoor Indoor Indoor fan speed Capacity HSPF CFM 10 0 10 20 30 40 50 60 HR18D2VAE HB2400VD2M20 M 16800 7 7 670 5568 7488 9376 11295 13152 15474 18232 21000 HR24D2VAE HB2400VD2M20 H 22000 7 7 900 7000 9413 11787 14200 16533 19453 22920 26400 HR30D2VAE HB3600VD2M20 T L 27800 7 7 1125 8845 11895 14894 ...

Page 6: ...R Cooling SERVICE VALVE SERVICE PORT DISCHARGE TEMP SENSOR INDOOR COIL DISTRIBUTOR OUTDOOR COIL COMPRESSOR SERVICE PORT ACCUMULATOR HIGH PRESSURE SWITCH LOW PRESSURE DEFROST SENSOR DRIER Heating REVERSING VALVE R E S N E D N O C R O T A R O P A V E REVERSING VALVE R E S N E D N O C R O T A R O P A V E SERVICE VALVE SERVICE PORT SERVICE VALVE SERVICE PORT DISTRIBUTOR DISTRIBUTOR SWITCH SWITCH CHECK...

Page 7: ...trical 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 Frequent washing of the cabinet fan blade and coil with fresh water Regular cleaning and waxing of the cabinet with good automobile polish A good liquid...

Page 8: ...ns are made from the service access area The most common application will find the unit best located about 10 from back wall with connection side facing the wall This application minimizes exposed tubing and wiring minimizing the space for youngsters to run around the unit with subsequent damage to the tubing or wiring In more confined application spaces such as corners provide a minimum of 10 cle...

Page 9: ...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 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 Line Insulation Suction line requires insulation in order to prevent condensation fro...

Page 10: ...strated in Figure 4 B 1 Tubing Connections CAUTION Use extreme caution in removing the caps from the suction and liquid line fittings as there is pressure present A fitting is on the liquid line to remove pressure CAUTION Heat Pumps are charged with refrigerant Heat Pump liquid and suction valves are closed to contain the charge within the unit Do not force the valve stem against the retaining rin...

Page 11: ...h 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 ckeck 9 Do not purge the lines with refrigerant Evacuate the lines and indoor coil Refrigerant Metering De...

Page 12: ...e outdoor unit and indoor coil must be an approved match per the unit specification 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 charge inside always use a recovery or recycling device WARNING To prevent pers...

Page 13: ...5 11 ...

Page 14: ...he condensing unit control wiring requires a 24 Volt minimum 25 VA service from the indoor transformer as shown on the wiring diagram 7 SYSTEM STARTUP 1 Turn thermostat to OFF turn on power supply at disconnect switch 2 Turn temperature setting as high as it will go 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 s...

Page 15: ...Table 7 included in this manual P14 9 3 Wiring Diagram Refer to the appropriate wiring diagram included in this manual P15 Table 7 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 ...

Page 16: ...bes Replace coil assembly Low vapor cool Low evaporator airflow Increase blower speed or reduce restriction replace air filter compressor iced Operating below 65 F outdoors Add low ambient kit evaporator coil Moisture in the system Recover refrigerant evacuate recharge add filter drier High vapor Excessive load Recheck load calculation pressure Defective compressor Replace Fluctuating head Air or ...

Page 17: ...HR18 36D2VAE HR42 60D1VAE 15 3 ...

Reviews: