Troubleshooting Guide - York TLHA18-30OSAAAD Installation Manual

TROU LESHOOTING GUIDE
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A. The air conditioner does not
run.
. The outdoor fan runs but the
compressor will not start.
C. There is insuf cient heating or
cooling.
. The compressor runs
continuously.
E. The compressor starts but shuts
down uickly.
F. Clicking sound is heard from the
air conditioner.
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1. Power failure.
2. Fuse blown or circuit breaker
open.
3. oltage is too low.
4. Faulty contactor or relay.
5. Electrical connections loose.
. Thermostat ad ustment too low
(in heating mode) or too high (in
cooling mode).
. Faulty capacitor.
8. Incorrect wiring, terminal loose.
9. Pressure switch tripped.
1. Motor winding cut or grounded.
2. Faulty capacitor.
1. There is a gas leak.
2. Li uid and gas line insulated
together.
3. The room was probably very hot
(cool) when you started the
system.
1. Thermostat ad ustment too low
(in heating mode) or too high
(in cooling mode).
2. Faulty fan.
3. Refrigerant charge too low, leak.
4. Air or incondensables in refriger
ant circuit.
1. Too much or too little refrigerant.
2. Faulty compressor.
3. Air or incondensables in
refrigerant circuit.
4. Changeover valve damaged or
blocked open (heat pump unit).
In heating or cooling operation any
plastic parts may expand or shrink
due to a sudden temperature change
in this event, a clicking sound may
occur.
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1. Wait for power resume.
2. Replace the fuse or reset the
breaker.
3. Find the cause and x it.
4. Replace the faulty component.
5. Retighten the connection.
. Check thermostat setting.
. Find the cause then replace
capacitor.
8. Check and retighten.
9. Find the cause before reset.
1. Check the wiring and the
compressor winding resistance.
2. Find the cause then replace
capacitor.
1. Remove charge, repair,
evacuate and recharge.
2. Insulate them separately.
3. Wait while unit has enough time
to cool the room.
1. Check thermostat setting.
2. Check condenser air circulation.
3. Find leak, repair and recharge.
4. Remove charge, evacuate and
recharge.
1. Remove charge, evacuate and
recharge.
2. etermine the cause and
replace compressor.
3. Remove charge, evacuate and
recharge.
4. Replace it.
In heating or cooling operation any
plastic parts may expand or shrink
due to a sudden temperature change
in this event, a clicking sound may
occur.
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