Dometic Rooftop RV Air Conditioner Logo
Posted on Mar 07, 2018
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Compressor turns on and runs for about 1 min then shuts off for a while before it does it again and the on/off switch when u switch it off it only goes to low fan. Never turns off. Also the thermastat is not working. If u turn all the way up to 90 degrees it will still not shut off.

1 Answer

Andy

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  • Master 572 Answers
  • Posted on Mar 07, 2018
Andy
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First replaced the thermostat then check on condenser unit that's outside .make sure the fan is running when compressor runs .if not there is your issue .If fan runs and compressor keep shutting off you might have a dirty coil so clean it out with water or you might have a leak in the system causing unit to shut off on low pressure .if this is the case you need to call a service technician .
Try simple things first like clean coil ,capicator and fan operation.

5 Related Answers

Anonymous

  • 828 Answers
  • Posted on May 31, 2008

SOURCE: Compressor starts and doesn't stop

Relay for the compressor may be stuck ( Contacts welded) both the fan and the compressor should operate at the same time. Have the relay(s) checked and possibly replaced.

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Anonymous

  • 6 Answers
  • Posted on May 27, 2009

SOURCE: Air conditioner will come on- fan motor is working- it sounds real low- it was on and then it shut off- waited a good 15 min. and cut it back on- it then started this problem

need more info. Is the fan actually on full force or does it feel like the air flow is restricted (could be dirty coil or filter)

Is the fan on full force but only warm air coming out (compressor not working)

Is the fan on but only cool not cold air coming out (freon leak)

The more info you give the easiest it is to troubleshoot from here.

hope this help

Benge007

co7196

Ned C Cook

  • 3433 Answers
  • Posted on Jun 02, 2009

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.

Bill Long

  • 606 Answers
  • Posted on Jun 09, 2009

SOURCE: We have a Coleman 7300 rooftop ac unit. When the

The fan motor is getting hot and going off on the internal overload in the motor.
This is caused by either a low voltage, a bad capacitor, or tight or dry bearings in the motor.
To check the bearings turn the power off to the unit, then spin the fan blade if it spins freely then the bearings are ok.
To check the capacitor you will need some kind of
tester or you can buy a capacitor and replace it, that's what a lot of people do. They usually don't cost very much.
To check the voltage you will need a voltmeter and measure the volts at the unit.

Bill Long

  • 606 Answers
  • Posted on Jun 09, 2009

SOURCE: RV air conditioner. Compressor running, fan stops before cool

The fan motor is getting hot and going off on the internal overload in the motor.
This is caused by either a low voltage, a bad capacitor, or tight or dry bearings in the motor.
To check the bearings turn the power off to the unit, then spin the fan blade if it spins freely then the bearings are ok.
To check the capacitor you will need some kind of tester or you can buy a capacitor and replace it, that's what a lot of people do. They usually don't cost very much.
To check the voltage you will need a voltmeter and measure the volts at the unit.

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