TROUBLESHOOTING/OPERATION
IO-DV090
IO-DV090
WWW.CLEANCOMFORT.COM
15
Troubleshooting (
continued
)
No ventilation. Ventilation is being called for.
1. Loose connection in ventilation control circuit.
2. Loose connection in damper power circuit.
3. Defective fresh air damper.
Unit removes some water, but not as
much as expected.
1. Air temperature and/or humidity have dropped.
2. Humidity meter and or thermometer used are
out of calibration.
3. Unit has entered defrost cycle.
4. Air filter dirty.
5. Defective defrost thermostat.
6. Low refrigerant charge.
7. Air leak such as loose cover or ducting leaks.
8. Defective compressor.
9. Restrictive ducting.
10. Optional Condensate Pump Safety Float Switch open.
I
WARNING!
ELECTRICAL SHOCK HAZARD: Electrical power
must be present to perform some tests. These tests
should be performed by a qualified service person.
Unit Test to Determine Problem:
1. Detach field control wiring connections from main unit.
2. Connect the yellow and brown pigtails from the main
unit together; only the fan should run. Disconnect the
wires.
3. Connect the yellow and blue pigtails from the main unit
together; the compressor and fan should run.
4. If these tests work, the main unit is working properly.
You should check the control panel and field control
wiring for problems next.
NOTE: Refrigeration systems should ONLY
be serviced by a qualified service technician.
If you need additional information, consult
Technical Support at 1-855-239-2665.
Refrigerant Charging
If the refrigerant charge is lost due to service or a leak,
a new charge must be accurately weighed in. If any of
the old charge is left in the system, it must be recovered
before weighing in the new charge. Refer to the unit
nameplate for the correct charge weight and
refrigerant type.
Compressor/Capacitor Replacement
This compressor is equipped with a two terminal external
overload and a run capacitor. The compressor is controlled
by a dedicated relay.
Remote Controls
The DV090 dehumidifier is controlled by digital controls
that are remote from the unit. You may or may not have
the devices listed below depending on the model of the
control you purchased. If the dehumidifier fails to oper-
ate as desired, always check the settings of the controls
to insure that they are correct. Check that the controls
are receiving 24VAC from the dehumidifier. Check the
connections between the dehumidifier, the control,
and the field control wiring.
5. Remove the control panel from the mounting box
and detach it from the field installed control wiring.
Connect the blue, yellow, and green wires from the
control panel directly to the corresponding colored
pigtails on the main unit. Leave the violet, white and
red wires disconnected!
6. Turn on the fan switch; the fan should run. Turn off
the fan switch.
7. Turn on the humidity control; the compressor and
fan should run.
8. If these tests work, the problem is most likely in the
field control wiring.
I
WARNING!
ELECTRICAL SHOCK HAZARD: Electrical power
must be present to perform some tests. These tests
should be performed by a qualified service person.
