We are going through the extreme hot spell here in Central Oregon and experiencing triple digit temperatures. We had decided to sleep in the RV (2021 Imagine 2600RB) last night. The inside temp was 990 F when we opened up the rig so I started the A/C on "High Cool". Assuming that I could only gain about 200 F of cooling from an ambient of 990 F, I set the thermostat to 800 F. It took awhile, but it finally got down around 800. It stayed there until outside temperatures began to fall and then the inside of the RV went below 800. 800 was my setpoint, but the A/C never shut off. I woke up in the middle of the night and we were at 730 with the A/C still running, which was nice and comfortable, but my concern was that the A/C setpoints were not working. Anyone else experienced this?
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A/C continues to operate after passing the temperature setpoint at the thermostat
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Hey Brian:
Thanks for the response. We have the Coleman Mach with the Airxcel thermostat. It does show just the "Cool Hi" display, so I guess ours won't cycle around the setpoint? Do you think that is a function of the thermostat? I have seen our same model with a more expensive looking thermostat.
Again, appreciate the help.
GuyGuy and Ginger Lauziere
2021 Imagine 2600RB
2011 Ford F-150 4WD/Crew Cab 3.5L Ecoboost
Equal-i-zer 4 point 1,000/10,000lb
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Our thermostat cycles from ON to Auto. Try pressing the mode button an looking for the AUTO to illuminate with the HI and LOW.
I believe ours cycles FAN LO - FAN HIGH - COOL LOW - COOL HIGH - COOL AUTO LOW - COOL AUTO HIGH - HEAT - OFFJoseph
Tow Vehicle: 2024 GMC K3500 Denali Ultimate Diesel
Coach: 303RLS Delivered March 5, 2021
South of Houston Texas
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Originally posted by Jlawles2 View PostOur thermostat cycles from ON to Auto. Try pressing the mode button an looking for the AUTO to illuminate with the HI and LOW.
I believe ours cycles FAN LO - FAN HIGH - COOL LOW - COOL HIGH - COOL AUTO LOW - COOL AUTO HIGH - HEAT - OFFAllen
2021 Momentum 21G
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Originally posted by acoleman43 View PostLook at the thermostat. If it shows "auto" it will stop at the designated temperature. If it just show AC Hi or AC low, it will keep running until you turn it off.2020 Reflection 273MK
2005 Dodge Ram 2500 CTD
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Originally posted by Lonestar View Post
I believe "Auto" refers to the fan operation, not the compressor. If in "Auto" the fan cycles on/off with the compressor. Even if the fan continues to run in the "cool high or cool low" setting the temp should not keep falling. The compressor should turn off and maintain the designated temp.Allen
2021 Momentum 21G
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We have found that leaving the fans on LOW at night (with the 2 units) helps to even out the temps in the camper along with not waking us due to the cycling of the fans.
You are correct that the compressor will cycle off and on based on set temp. Similar to the way a home unit would work if you flipped the fan to ON vs AUTO.Joseph
Tow Vehicle: 2024 GMC K3500 Denali Ultimate Diesel
Coach: 303RLS Delivered March 5, 2021
South of Houston Texas
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Originally posted by Jlawles2 View PostWe have found that leaving the fans on LOW at night (with the 2 units) helps to even out the temps in the camper along with not waking us due to the cycling of the fans.
You are correct that the compressor will cycle off and on based on set temp. Similar to the way a home unit would work if you flipped the fan to ON vs AUTO.
In real hot weather, if an A/C coil tends to freeze up, the fan running continuously will usually prevent this from happening.
In the OP, I'm still not sure I understand why the temp continued to go below the set point when on High Cool. Regardless of the fan setting the compressor should not continue to run.2020 Reflection 273MK
2005 Dodge Ram 2500 CTD
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We experienced this the past weekend on our first trip out with our 2023 2600RB. We set it for 74 and it ran until it was at 63. Very cold at night for us! It is set on “Dry” for air conditioning so that the fan runs and the air conditioner cycles off and on as needed. Can’t find a way to override it from getting so cold and not stopping at 74.
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