Unique WS Series User Manual

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WS
Series
Advanced air conditioning systems
10.5 Poor Heating Troubleshooting (Heat Pump).
Symptom Probable Cause Corrective Action
1
Refrigerant flow
failure
1. Refrigerant gas
shortage.
2. Excessive overcharging
of refrigerant.
3. Gas leakage.
4. Clogging of strainer or
capillary tube.
5. 4-Way valve is
defective.
6. Solenoid 4-Way valve is
defective.
7. Compressor is defective.
1. Charge refrigerant gas.
2. Recharge gas.
3. Repair leakage.
4. Replace strainer.
5. Replace 4-Way valve.
6. Replace solenoid.
7. Replace compressor.
2
Air circulation
failure.
1. Air filter is clogged
2. Air shutters are closed.
1. Clean air filter.
2. Open air discharge shutters.
3
Heating elements
failure.
1. One or two hating stages
are not operating.
1. a. Check electrical heating elements
(resistance).
b. Check contactors.
c. Check the elements` time delay
fuse.
4
Refrigerant low
pressure.
1. Lack of water flow. 1. Check water filter.

Unique WS Series Specifications

General

Brand	Unique
Model	WS Series
Category	Air Conditioner
Language	English