SantaFe ULTRA Serie Instrucciones De Instalación página 23

14
SERVICE
1. Troubleshooting
CAUTION!
TROUBLESHOOTING SHOULD BE PERFORMED BY A QUALIFIED HVAC TECHNICIAN.
Symptom
Neither fan nor
compressor
running.
Dehumidification
is being called for.
Compressor
is not running.
Dehumidification is
being called for. Fan
is running.
Compressor
cycles on and off.
Dehumidification is
being called for.
Fan is not running.
Dehumidification or
fan is being called
for.
800.533.7533 | Santa-Fe-Products.com
Possible Reason
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.
1. Defective compressor run
capacitor.
2. Loose connection in
compressor circuit.
3. Defective compressor
overload.
4. Defective compressor.
5. Defrost thermostat open.
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. Loose connection in fan
circuit.
2. Obstruction prevents fan
impeller rotation.
3. Defective fan.
4. Defective fan relay.
Troubleshooting Procedure
WARNING!
ELECTRICAL SHOCK HAZARD:
Electrical power must be present to perform
some tests. These tests should be performed by
a qualified service person.
Troubleshooting Procedure for Control Related
Issues
This method of diagnosis will test the 3 main
components of the control circuit individually
to indicate any potential problems. This is to be
used when the control will not activate the main
unit.
1. Detach field control wiring connections from
the terminals on the main unit.
2. Connect the 24V and FAN terminals
together; only the fan should run.
Disconnect the terminals.
3. Connect the 24V and DEHU terminals
together; fan and compressor should run.
Disconnect the terminals.
4. If this test works, the main unit is working
correctly from a control standpoint.
5. Reconnect field control wiring to the
terminals on the main unit.
6. Remove the control panel cover and
detach the field wiring from the control
connections.
7. Connect the 24V and FAN terminals
together; only the fan should run.
Disconnect the terminals.
8. Connect the 24V and DEHU terminals
together; fan and compressor should run.
Disconnect the terminals.
9. If this test works, then the field control
wiring is ok.
10. If the problem persists, then the control is
most likely faulty.
Santa Fe ULTRA70 Installation & Operation Instructions
23