Dantherm CDP 35 Service Manual page 20

Product and functional description,
Defrosting
Safety circuit
20
If the temperature falls to below 20 °C the evaporator may start to ice up after a short
time. When, caused by a room temperature below 20 °C, the evaporator sensor
registers a temperature lower than 5 °C, it will let the unit work in dehumidification mode
for further 30 minutes. Then the compressor is stopped and the unit switches over to
passive defrosting, which means that the fan blows room air onto the evaporator coil
and melts the ice on the evaporator. When the evaporator sensor registers that the
temperature is above 5 °C, the compressor starts again.
If the temperature in the dehumidifier increases to a temperature of more than 55 °C (in
case of fan failure or room air temperature higher than 36 °C), the compressor stops
automatically to avoid damaging it. After 45 minutes the compressor starts again
automatically.
continued