Operation Manual
CL01-2 Wall Controller
Operation Manual - CL01-2 Wall Controller
Document: 0525-081 Ver. 1 190903
28
Condition Probable Cause
Recommended Actions/
Checkpoints
Evaporator coil freezes up during low
ambient operation
System low on refrigerant.
System low on airflow.
Outdoor air sensor failure.
Check the pressures and the temps for suction
and discharge.
Check the ID fan speed through the Control
Interface.
Check the Alarm on the Control Interface.
Check for dirty filters.
Economiser, outside air and/or spill
air will not operate
Economiser connector not plugged
into unit wiring harness
Economiser, outside air, and/or spill
air motor has failed.
Wiring or terminal failure
Check the connection.
Damper motor wiring needs to be checked
and replaced as required.
Wiring or terminal to be checked and replaced
as required.
Check if Economy Mode is enabled.
Control Interface buttons not
operating
Control Interface not responding.
Data cable failure.
Reset the power to the Control Interface by
turning it Off/On.
Replace data cable through service.
Control Interface does not power up
Wiring fault.
Data cable fault.
Wiring to be checked as per the wiring
diagram.
Replace data cable through service.
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