Dometic roof air
Compressor relay was stuck on so replaced control board.The unit worked good until down to set temp and then compressor would cycle on and off every 20 seconds.Replaced thermostat and the cycling imp...
Forum Discussion
wrgrs50s wrote:
Are you sure it's the compressor cycling or the low and high fan cycling, because there is a well known issue with the dometic thermostats where the fan speed will alternate low to high in quick increments when set in the auto mode. If the thermostat fan setting is set to low or high instead of auto, it eliminates that issue. Mine has had that issue and I cannot find a fix so I just run the fan setting on high all the time.
Definitely the compressor.Fan is on high constant.Fire up the AC when MH is super hot,compressor runs,fan on high.Works really good till down to set therm temp...then the compressor cycling begins.Might have thought it was normal operation but have burned up 2 compressor relays in 2 wks of operation.
