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Description of the control board,
Part/function,
con-
tinued
Part
Indicator
On the operator panel there are 4 control lamps, indicating the
lamps
following from left to right:
Symbol
Cooling
Power
Heating
Fan op-
eration
Temperature dial for room temperature
Power cable
continued
Function
Color
-
IR connection to serial port. For Dan-
therm service technician only
Green
Cooling circuit is operating to lower tem-
perature.
Normal operation is green
Yellow
The unit is operated inefficiently.
This will self reset in time
Red
The compressor current draw is outside
specified window.
(indicating a faulty compressor)
This will reset when functions switch is
briefly switched to off position
Green
Always green, provided there is 230 V
AC connected to the unit.
Note:
Also green when the functions switch is
in Off position
Must be completely off when servicing
unit/changing filter
Green
Indicating the heater coil is working to
raise temperature
Red
The heater coil current draw is outside
specified window.
(indicating an open circuit like OT fault)
This will reset when functions switch is
briefly switched to off position, and/or the
OT reset button is depressed.
OT fail:
Overheat thermostat failure. See also
section "Fault finding guide", page 33
Green
whenever one or both fans are running
Red
One or both fans have a defect chasing
the current draw out of specified window
Description
13
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