Question about Dometic Rooftop RV Air Conditioner

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Suburban SF30FQ furnace doesn't run. Has power to unit and can hear relay click in unit when call for heat but blower does not run.

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  • Dometic Master
  • 6,674 Answers

Please give make, model, year etc of RV that furnace is in. Thermostat on wall operates heat and cool?

Posted on Nov 29, 2013

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Posted on Jan 02, 2017

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SOURCE: ATWOOD MOBILE FURNACE RUNS WHEN IT WANTS/

Check your furnace for power. will be 4 wires. power ground and 2 thermostat wires. Check for power at the time delay relay, if you have power there check for power going in the fan motor, if power in motor wire, motor is bad. If no power in motor wire and power going to circuit board take the 2 thermostat wire apart and wrap the 2 together comimg from the thermostat. Fan will stat in about 30 seconds. If it does you need a control kit in the ac. But sounds to me like you have a furnace problem.

Posted on Mar 19, 2009

MNfisherman
  • 11896 Answers

SOURCE: unit runs fine until it reaches temp and then you

Sounds like either the temp unit or sensor may need to be replaced. You should also check the resistance of your relays with a multi-meter to check that they are not causing the problem. Checking the power from power-supply would probably be a last thing to check for.

Posted on Jul 17, 2009

motor1258
  • 6674 Answers

SOURCE: Air conditioner won't run. when

That hum making the lights dim as well I suspect sounds like compressor trying to come on. Are you sure you have a good 120volts coming in to RV?

Posted on Jul 28, 2011

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likely need to change the thermostat configuration to electric rather than gas. does it heat when you put the fan in the on position and call for heat?

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

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