Question about Dometic Heating & Cooling

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2018 forest river surveyor with Dometic ac unit and digital dual heat/cool thermostat. Thermostat is set for fan Auto. Heat will work , Ac condenser kick on and off with temperature setting but fan on ac unit will not shut off when plugged into shore power. Even when I shut the breaker to ac unit fan continues to run. I can only shut fan off when I unplug from shore power. I have reset thermostat. Help and baffled???

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  • rd_d3 Mar 23, 2019

    The trailer worked fine last year when I put it away winterized.

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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the dr

joey shearer

  • 447 Answers

SOURCE: Carrier thermostat

I hate to say it but Ive had trouble with Carrier's Tstats doing similar improper things. Unfortunatly the only repair is going to be replacement of the whole tstat. I recommend Honeywell's FocusPRO or VisionPRO tstat. Ive yet to have one fail and they have a 5yr warranty if they ever do.

Posted on Nov 26, 2007

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Anonymous

  • 540 Answers

SOURCE: AC breaker trips after 10 minutes

Whats the amp breaker? Is this for the inside unit or the outside condenser? If the inside and gas heat you have a bad fan motor, If its an electric furnace , the same, but if its the outside unit, the fan could be going bad, locking up and the compressor still runs and pulls high ampsand tripps breaker or the compressor is just pulling too many amps due to plugged coils with dirt , grass or weeds blocking airflow.(koolbreezes74401@yahoo.com)

Posted on Jun 09, 2008

mastatech

mark milligan

  • 478 Answers

SOURCE: Amana 1 ton Residential AC / Outside unit comes on for a sec

open the service panel to check for control voltage of 24volts when tstat calling, The contactor should be pulled in, if contactor is down,and contacts appear to be clean, and the unit is still not running, it is a bad compressor. to test this unplug the black wire from the compressoror at contactor,w/ power off! Turn on power if fan works normally it's a bad compressor. However if you see a swollen split cap(5 wires to a soup can looking w/ the terminal C,F,and Comp), switch it first and start at square one.
You also need to consider the high pressure switch if its cycling on off on off.

Posted on Mar 12, 2009

co7196

Ned C Cook

  • 3433 Answers

SOURCE: Dometic AC that the fan shuts off but the compressor keeps running

call dometic dealer. I hear they have a bad circuit board that is replaced.

Posted on Jun 02, 2009

Dan Favata

  • 233 Answers

SOURCE: Ruud AC fan won't shut off

it sounds like this is an electromechanical system, (no circuit board) verify that you wired the normally open switch at the fan limit control to the low speed fan, to the normally closed on the relay..(series circuit) if either of these are wrong the fan will runn all the time

Posted on Jul 12, 2009

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