Haier HC60D1VAR User Manual - Page 15

Symptom Possible Cause Remedy 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 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 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 Run or start capacitor defective Loose connection Condenser fan runs, Compressor stuck, grounded or open compressor doesn't motor winding, open internal overload Low voltage condition Low voltage condition Incorrect voltage Compressor short-cycling Defective overload protector Refrigerant undercharge Register sweat Low evaporator airflow Restriction in liquid line, High head - Low metering device or filter drier vapor pressures Flowrator piston size too small Incorrect capillary tubes Blocked outdoor coil High head - High Refrigerant overcharge or normal vapor Condenser fan not running pressures Air, non-condensibles or moisture in system Low head - High Flowrator piston size too large vapor pressures Defective compressor valves Incorrect capillary tubes Low vapor - cool Low evaporator airflow compressor - iced Operating below 65 F outdoors evaporator coil Moisture in the system High vapor Excessive load pressure Defective compressor Fluctuating head Air or non-condensibles in system and vapor pressures Pulsing noise at Air or non-condensibles in system metering device or liquid line Replace Check and tighten all connections. Wait for 2 hours for overload to reset. Replace compressor if still open. At compressor terminals, voltage must be within 10% of rating plate volts when unit is running. Add start kit components At compressor terminals, voltage must be within 10% of rating plate volts when unit is running. Replace - check for correct voltage Add refrigerant Increase blower speed or reduce restriction - replace air filter Replace defective components Change to correct size piston Change coil assembly Clear away leaves and other debris Correct system charge Repair or replace Recover refrigerant, evacuate & recharge, add filter drier Change to correct size piston Replace compressor Replace coil assembly Increase blower speed or reduce restriction - replace air filter Add low ambient kit Recover refrigerant, evacuate & recharge, add filter drier Recheck load calculation Replace Recover refrigerant, evacuate & recharge. Recover refrigerant, evacuate & recharge 13