Luxaire Heat Pump Troubleshooting

The tables below contain the lists of possible breakdowns which may happen with Luxaire heat pumps of different modifications. In case of Luxaire heat pump not working you should address these checklists.

There are types of faults and problems with detailed descriptions, possible causes and solutions which may be recommended in the certain situations. If you feel the temperature in your house is getting higher, it may be because of heat pump fan not spinning, and therefore, heat pump not cooling. The information given below can be helpful for you then.

Luxaire HL8B036F4C Heat Pump Troubleshooting

ProblemPossible Cause
Unit does not operate immediately after being restarted.Unit control initiates a 3 minute delay at the end of each cycle to protect the compressor from damage.
A whoosh or gurgling noise can be heard at the indoor unit.Sometimes, the refrigerant can be heard in the indoor coil when the outdoor unit starts or stops operation. This is not a malfunction.
Mist is coming out of the indoor unit during cooling operation.This sometimes happens when the indoor temperature and humidity are very high and the air is being cooled quickly. The mist will disappear as the indoor temperature and humidity are lowered.
A creaking or popping noise can be heard when the unit starts or stops.The plastic components of the indoor units sometimes expand and contract when they are heated and cooled.
Unit is not operating.Are the TIMER ON and TIMER OFF features being used incorrectly?
Is power disconnected or has circuit breaker tripped.
Is power shut down?
System is not cooling (or heating) efficiently.Is temperature setting correct?
Are either the air inlet or air outlet blocked on the outdoor or indoor unit?
Is filter dirty?
Is fan at low speed?
Are windows and doors properly shut?
Wireless remote is not working.Is remote in direct line of sight with indoor unit infrared receiver? Has the remote been damaged?
Remove remote control batteries for 30 seconds, then reinsert them. Replace batteries, if necessary.
Water is leaking from indoor unit.Indoor humidity level is very high and water is being blown from indoor coil. This will stop as humidity level is reduced.
Water is leaking from condensate line at indoor unit.Check condensate line outside to make sure it is not obstructed.
Check condensate line to make sure it has not been disconnected from indoor unit.
Water is leaking from the outdoor unit.During operation in high humidity areas, condensate will form on cold outdoor refrigerant pipes.
When heat pump is operating in defrost mode, ice will thaw from around outdoor coil and water will flow from the unit.
Clicking noise heard inside.Sometimes, the sound of the outdoor unit fan or compressor relay can be transmitted in a way that makes it seem to be coming from the indoor unit.
Indoor fan is not working.Heat pump units - In HEAT mode, a timed delay keeps indoor fan off for two minutes to prevent unheated air from being circulated by the indoor fan.
Heat pump units - In HEAT mode, cold outdoor temperatures and high humidity cause frost to accu- mulate on the outdoor unit. When this happens, the unit will enter a defrost cycle. The indoor fan is off during the 3 - 12 minute cycle.
In DRY mode, indoor fan operation may be stopped to avoid delivery of moist air to the room. Do not adjust temperature setting.

Luxaire THRD36S41S1 Heat Pump Troubleshooting

Compressor Outdoor Fan Will Not Start.Power failure.Call power company.
Fuse blown or circuit breaker tripped.Replace fuse or reset circuit breaker.
Defective thermostat, contactor transformer or control relay.Replace component.
Insufficient line voltage.Determine cause and correct.
Incorrect or faulty wiring.Check wiring diagram and rewire correctly.
Thermostat setting too high.Lower thermostat setting below room temperature.
High-pressure switch tripped.
Low-pressure switch tripped.Check for leaks, repair, and recharge.
Freeze-up protection thermostat tripped.
Compressor Will Not Start But Outdoor Fan Runs.Faulty wiring or loose connections in compressor circuit.Check wiring and repair or replace.
Compressor motor burned out, seized, or internal overload open.Determine cause. Replace compressor.
Defective overload.Determine cause and replace.
One leg of 3-phase power dead.Replace fuse or reset circuit breaker. Determine cause.
Compressor Cycles (Other Than Normally Satisfying Thermostat).Refrigerant overcharge or undercharge.Recover refrigerant, evacuate system, and recharge to nameplate.
Defective compressor.Replace and determine cause.
Insufficient line voltage.Determine cause and correct.
Blocked outdoor coil or dirty air filter.
Defective overload.Determine cause and replace.
Defective thermostat.Replace thermostat.
Faulty outdoor-fan (cooling) or indoor-fan (heating) motor or capacitor.Replace.
Restriction in refrigerant system.Locate restriction and remove.
Compressor Operates Continuously.Dirty air filter.Replace filter.
Unit undersized for load.Decrease load or increase unit size.
Thermostat set too low.Reset thermostat.
Low refrigerant charge.Locate leak, repair, and recharge.
Leaking valves in compressor.Replace compressor.
Air in system.Recover refrigerant, evacuate system, and recharge.
Outdoor coil dirty or restricted.Clean coil or remove restriction.
Dirty air filter.Replace filter.