A/C built-in thermostat question - A/C not cycling often
Good morning. Camped over the weekend in probably the warmest non-shade temps we've done so far -- around 90-92 degrees. I have a 40-foot 5th wheel with twin A/Cs -- a 15K in the main living space and a 13.5K in the front bedroom.
The main A/C worked like a champ. Ran lots all weekend, but produced nice cool air. My concern is the 13.5K unit. It runs and cools fine when the compressor is cycled...but the issue I am seeing is that the compressor doesn't cycle as much as I'd like for it to. I experimented a bunch this weekend varying the fan speed between low, med, and high....and adjusting the dial-thermostat that's built into the return/blower housing. At the hottest part of the day, the main unit was doing all it could...but I wanted to supplement with the bedroom unit...however it would only run for a minute or two...and then cycle off again. It would cycle from time to time...but maybe only 4 times per hour (I didn't time it).
My camper is stored indoors...and I inspected the coil and such by removing the outside cover...and there wasn't anything obvious going on, nothing looked very dirty, etc.
I did read that some folks say the built-in thermostat being so close to the moving air can cause the compressor to cycle off. Curious what people's thoughts are on this. If this is reasonable or expected, can I wire in a wall-mount thermostat so it's farther away from the unit and bypass the built-in one?
So for the most part the main A/C was doing the bulk of the cooling. As such, it would cycle at 74 or above...but would run non-stop below 74. I was happy with that...but would be happier if I could get the second unit to help share the load more effectively.
Of note, I have a Progressive Industries surge protector installed with a remote display...so I can tell by looking at the second 50-amp leg when the bedroom A/C is just blowing air vs. the compressor also running -- usually a 5amp draw vs. 16 or so amps.
Thanks,
DNC
The main A/C worked like a champ. Ran lots all weekend, but produced nice cool air. My concern is the 13.5K unit. It runs and cools fine when the compressor is cycled...but the issue I am seeing is that the compressor doesn't cycle as much as I'd like for it to. I experimented a bunch this weekend varying the fan speed between low, med, and high....and adjusting the dial-thermostat that's built into the return/blower housing. At the hottest part of the day, the main unit was doing all it could...but I wanted to supplement with the bedroom unit...however it would only run for a minute or two...and then cycle off again. It would cycle from time to time...but maybe only 4 times per hour (I didn't time it).
My camper is stored indoors...and I inspected the coil and such by removing the outside cover...and there wasn't anything obvious going on, nothing looked very dirty, etc.
I did read that some folks say the built-in thermostat being so close to the moving air can cause the compressor to cycle off. Curious what people's thoughts are on this. If this is reasonable or expected, can I wire in a wall-mount thermostat so it's farther away from the unit and bypass the built-in one?
So for the most part the main A/C was doing the bulk of the cooling. As such, it would cycle at 74 or above...but would run non-stop below 74. I was happy with that...but would be happier if I could get the second unit to help share the load more effectively.
Of note, I have a Progressive Industries surge protector installed with a remote display...so I can tell by looking at the second 50-amp leg when the bedroom A/C is just blowing air vs. the compressor also running -- usually a 5amp draw vs. 16 or so amps.
Thanks,
DNC
