Therma-Stor Quest 185 Cool, Инструкция по установке, эксплуатации и обслуживанию

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Quest 185 Cool Installation, Operation and Maintenance Instructions
22
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Symptom Possible Reason Troubleshooting Procedure
CAUTION!
TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN.
Troubleshooting
Troubleshooting Procedure for Control
Related Issues
This method of diagnosis will test the 3 main components
of the control circuit individually to indicate any poten-
tial problems. This is to be used when the control will not
activate the main unit.
1. Detach field control wiring connections from the
pigtails on the main unit.
2. Connect the yellow and green wire pigtails
together; only the fan should run. Disconnect the
wires.
3. Connect the yellow and blue wires pigtails together;
fan and compressor should run.
Disconnect the wires.
4. If this test works, the main unit is working
correctly from a control standpoint.
5. Reconnect field control wiring to the pigtails on the
main unit.
6. Remove the control panel cover and detach the field
wiring from the control connections.
7. Connect the yellow and green wires together; only the
fan should run. Disconnect the wires.
8. Connect the yellow and blue wires together; fan and
compressor should run. Disconnect the wires.
9. If this test works, then the field control wiring is ok.
10. If the problem persists, then the control is most
likely faulty.
WARNING!
ELECTRICAL SHOCK HAZARD:
ELECTRICAL POWER MUST BE PRESENT
TO PERFORM SOME TESTS. THESE TESTS
SHOULD BE PERFORMED BY A QUALIFIED
SERVICE PERSON.
Neither fan nor com-
pressor
running.
Dehumidification
is being called for.
Compressor is
not running.
Dehumidification
is being called for. Fan
is running.
1. Defective compressor run
capacitor.
2. Loose connection in com-
pressor circuit.
3. Defective compressor
overload.
4. Defective compressor.
5. Defrost thermostat open.
Compressor cycles on
and off. Dehumidifi-
cation is being called
for.
1. Low ambient
temperature and/or
humidity causing unit
to cycle through
defrost mode.
2. Defective compressor
overload.
3. Defective compressor.
4. Defrost thermostat
defective.
5. Dirty air filter(s) or air flow
restricted.
6. Defective fan or relay.
1. Dehumidifier unplugged or
no power to outlet.
2. Humidity control set
too high.
3. Loose connection in
internal or control wiring.
4. Defective compressor relay.
5. Defective control
transformer.
SERVICE