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Old 03-28-2023, 12:02 PM   #1
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AC doesnít work after heat pump stopped

I was camping and it got colder than I thought. I turned heat pump on and it must have gotten too cold outside because it stopped. Now I cannot start the AC.

I reset the two breakers in the back for both front and rear AC and I also checked the fuse for the furnace/roof/AC.

The fan does still work on both the front and rear AC.

Can anyone tell me something else to try?

Thanks!
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Old 03-28-2023, 01:09 PM   #2
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Quote:
Originally Posted by Vette4ba View Post
I was camping and it got colder than I thought. I turned heat pump on and it must have gotten too cold outside because it stopped. Now I cannot start the AC.

I reset the two breakers in the back for both front and rear AC and I also checked the fuse for the furnace/roof/AC.

The fan does still work on both the front and rear AC.

Can anyone tell me something else to try?

Thanks!
Hello sir, not sure if you understand how a heat pump works or not but if the a/c is not working then your heat pump is not going to work. There is something called a reversing valve on heat pumps that makes the a/c turn into a heat source. With the age of your heat pump and assuming it's the original the first place to start and the cheapest is to make sure the capacitor for the compressor is good. Good luck
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Old 03-28-2023, 03:02 PM   #3
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Does either the front or back AC units work?

You can first cycle the thermostat power. A small black switch on the underside of the thermostat. Slide it forward to turn off. Wait a few seconds and then slide it towards the rear.
Then select A/C or Heat Pump with fan on auto and wait 5 min for it to time in.

If that doesn't do it then try a system reset. Turn the thermostat off using the bottom black switch. Hold down both top and bottom mode buttons while turning the thermostat on. You should see FF in the display.
Again, select A/C or Heat Pump and wait 5 min for it to time in.
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Old 03-28-2023, 05:08 PM   #4
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Did you try to see if it still works on heat pump? And do you have both thermostats and all three zones set to ac. I sometimes mix up zone 1 and 2 for the ac because there is no zone 2. For the aqua hot there is 2 zones.
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Old 03-28-2023, 07:12 PM   #5
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Try removing the 12 VDC power from the thermostat for 1 minute and put the power back on it to reset the thermostat.

Ken
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Old 03-31-2023, 08:39 AM   #6
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OMG, the reset worked and you just saved me lots of money!
Thank you so very much!!
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