TROUBLE SHOOTING GUIDE
Problem
Probable cause
Remedy
A. The air conditioner does not run.
1. Power Failure.
1.
Wait for Power resume.
2.
Fuse blown or circuit breaker
2.
Replace the fuse or reset the
open.
breaker.
3.
Voltage is too low.
3.
Find the cause and fix it.
4.
Faulty contactor or relay.
4.
Replace the faulty component.
5.
Electrical connections loose.
5.
Retighten the connection.
6.
Thermostat adjustment too low
6.
Check Thermostat setting.
(in heating mode) or too high (in
cooling mode)
7.
Faulty Capacitor
7.
Find the cause then replace
Capacitor.
8.
Incorrect wiring, terminal loose
8.
Check and retighten.
9.
Pressure switch tripped
9.
Find the cause before reset.
B. The outdoor fan runs but the
1. Motor winding cut or grounded.
1.
Check the wiring and the
compressor will not start.
compressor winding resistance.
2.
Faulty Capacitor.
2.
Find the cause then replace
Capacitor.
C. There is insufficient heating or
1. There is a gas leak.
1.
Remove charge, repair, evacuate
cooling.
and recharge.
2.
Liquid and gas line insulated
2.
Insulate them separately.
together.
3.
The room was probably very hot
3.
Wait while unit has enough time to
(cool) when you star ted the
cool the room.
system.
D. The compressor run continuously.
1. Thermostat adjustment too low
1.
Check Thermostat setting.
(in heating mode) or too high (in
cooling mode)
2. Faulty fan.
2.
Check condenser air circulation.
3.
Refrigerant charge too low, leak.
3. Find leak, repair and recharge.
4.
Air or incondensables in
4.
Remove charge, evacuate and
refrigerant circuit.
recharge.
E. The compressor starts but shuts
1. Too much or too little refrigerant.
1.
Remove charge, evacuate and
down quickly.
recharge.
2.
Faulty compressor.
2.
Determine the cause and replace
compressor.
3.
Air or incondensables in
3.
Remove charge, evacuate and
refrigerant circuit.
recharge.
4.
Changeover valve damaged or
4.
Replace it.
blocked open (heat pump unit)
F. Clicking sound is heard from
In heating or cooling operation any
In heating or cooling operation any
the air conditioner.
plastic parts may expand or shrink
plastic parts may expand or shrink due
due to a sudden temperature change
to a sudden temperature change in this
in this event, a clicking sound may
event, a clicking sound may occur.
occur.
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ENGLISH
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3/14/05, 3:27 PM
