Massive Heat Wave, AC not working. - HELP
I have a Duo Therm roof AC unit. Yesterday morning it was blowing cold air, but sounded like the fan was laboring. Ultimately, fan stopped working altogether. Even with AC off and just switching fa...
Forum Discussion
OK so I woke up this morning and the AC was still running. Just to recap, I still have the original roof unit that came with my 2005 Fifth Wheel.
Yesterday, the control box and the thermostat were both replaced. I now have a digital control box and a digital thermostat from Dometic. When he installed all of this, he set the fan to Auto and the unit to cool and it worked from 3pm yesterday through the entire night.
When I woke up this morning, I simply change the thermostat up to around 72 degrees so that it would shut off for awhile while I got ready to leave. It kept running and would not turn off. Either fan or compressor.
I then just switched the unit to the off mode. IT shut off. I let it sit for a minute or two and then switched fan to Auto and unit to cool. During this time, the temperature had increased in the coach so I decided to set thermostat below room temp to see if it would come on. Compressor did, but the fan did not.
I did the thermostat reset as outlined in the manual, but that had no effect. The only way I can get the fan to blow is to set it on high and then turn on cool and it works perfectly.
My question is, is this normal given the equipment I have? Prior to this, I had an analog thermostat, and when I switched to cool with auto on the fan, both came on at the same time.
Any help is appreciated. BTW, I contacted the RV Tech that installed it and let him know what happened. If he needs to come back out, I do not think I should have to pay another service call fee to come out to diagnose/fix something he did right?
Yesterday, the control box and the thermostat were both replaced. I now have a digital control box and a digital thermostat from Dometic. When he installed all of this, he set the fan to Auto and the unit to cool and it worked from 3pm yesterday through the entire night.
When I woke up this morning, I simply change the thermostat up to around 72 degrees so that it would shut off for awhile while I got ready to leave. It kept running and would not turn off. Either fan or compressor.
I then just switched the unit to the off mode. IT shut off. I let it sit for a minute or two and then switched fan to Auto and unit to cool. During this time, the temperature had increased in the coach so I decided to set thermostat below room temp to see if it would come on. Compressor did, but the fan did not.
I did the thermostat reset as outlined in the manual, but that had no effect. The only way I can get the fan to blow is to set it on high and then turn on cool and it works perfectly.
My question is, is this normal given the equipment I have? Prior to this, I had an analog thermostat, and when I switched to cool with auto on the fan, both came on at the same time.
Any help is appreciated. BTW, I contacted the RV Tech that installed it and let him know what happened. If he needs to come back out, I do not think I should have to pay another service call fee to come out to diagnose/fix something he did right?
