York HTCA, Installation Manual

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21
ENGLISH
EN
TROUBLESHOOTING GUIDE
Problem Probable cause Remedy
A. The air conditioner does not run. 1. Wait for Power resume.
2. Fuse blown or circuit breaker
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
9. Pressure switch tripped
9. Find the cause before reset.
B. The outdoor fan runs but 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. Remove charge, repair, evacuate
cooling. and recharge.
2. Liquid and gas line insulated
together.
3. The room was probably very hot
(cool) when you star ted the cool the room.
system.
D. The compressor run continuously. 1. Thermostat adjustment too low
(in heating mode) or too high (in
cooling mode)
2. Faulty fan. 2. Check condenser air circulation.
3. Refrigerant charge too low, leak.
4. Air or incondensables in
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
blocked open (heat pump unit)
F. Clicking sound is heard from
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.
1. Power Failure.
2. Replace the fuse or reset the
8. Check and retighten.
1. Check the wiring and the
2. Insulate them separately.
3. Wait while unit has enough time to
1. Check Thermostat setting.
3. Find leak, repair and recharge.
4. Remove charge, evacuate and
4. Replace it.
In heating or cooling operation any
In heating or cooling operation any
1. There is a gas leak.
1. Motor winding cut or grounded.
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