air conditioners
My last two outings I've had trouble with the ACs on my 2003 Country Coach Intrigue. When I leave home where I'm plugged into 50 amp, I turn on the generator, then the AC, then unplug the shore power....
Forum Discussion
Golden_HVAC wrote:ouachitah1 wrote:
I will try leaving more time when changing power sources and setting the temp high during the power switch is a great idea. Still shouldn't they have turned on after waiting an hour or two. I had to wait overnight before the AC would turn on again.
If the compressor power is interrupted by say 1 second to 2 minutes, it can cause a strain on the compressor when it re-starts. The compressor circuit itself does not have a time delay, it is in the thermostat. However most thermostats are not smart enough to know if there is a 120 volt power loss at the compressor. So the thermostat will see 12 volts input (so it can run the furnace as well as both A/C units) and not detect the loss of power like a home furnace will do.
If you turn off the thermostats manually, and leave them off for say 10 seconds, then the internal time delay will be activated, and it should not turn on the cooling for at least 2 minutes. So setting it to 85F for when you start the generator, and then back to 70 as you return to the coach after unplugging the RV is plenty of time for the compressor to be off between run cycles.
Without the off time, the compressor can draw an excessive amount of amps, and will trip a internal compressor amperage overload. Then the compressor has to cool off, and then it can reset once below about 130F. This can take 10 - 15 minutes!
Good luck,
Fred.
The compressor start delay (2 minutes and 45 seconds) is built into the CONTROL Board on the AC,not in the Tstat circuit. Doug
