Fan Control; Compressor Control; Display Indication - Dantherm CDF 35 Service Manual

4.2. Fan control

When the dehumidifier is started by the hygrostat, the fan is coupled in at the same time as the
compressor.
If continuous ventilation is required – i.e. independent of the dehumidification demand – a bridge must be
made between the terminals 25 and 26.

4.3. Compressor control

The number of compressor starts is limited by a 6 minutes timer, which starts up when switching on the
compressor. The timer must have come to an end before the compressor can be switched on again.
Each time the unit has been switched off on the main switch, either by the built-in hygrostat or by an
external hygrostat, it will take 30 seconds before the unit can be switched on again. This is a safety
function protecting the compressor against overloading caused by too high pressure in the cooling circuit
at start up.

4.4. Display indication

A display on the side of the unit clearly indicates the working modes.
1. Power is on
The LED lights up in green when power is connected to the unit.
During continuous ventilation there are no display indications. In this operation mode the flash will light
up constantly in green to show that power is on.
2. Cooling circuit failure – the dehumidifier is switched off
Pressure or temperature on the HP side of the cooling circuit is too high and therefore the unit was
switched off automatically in order to protect the compressor. After 45 minutes the unit restarts
automatically.
After restart the triangle LED will flash on and off in red to indicate that the unit is working and that the
condenser sensor has registered a failure on the unit. To turn off the triangle LED, disconnect and connect
the power supply to the unit.
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