Why your RV AC may Keep Running even when the Switch is OFF
Many times the ACs in the RV can work flawlessly that you don’t even think about it.
One problem that can happen with ACs, is when they fail to respond to the controls as expected.
For example, the AC can keep running even when it is turned off at the thermostat.
Should this happen, you’d want to know what the cause is and whether you may be able to fix it yourself or you need to contact an RV AC technician.
In this post, we’ll look at why your RV AC fan or compressor can keep running even after it’s turned off and what you can do to fix it.
Why the Rv Ac Fan Can Keep Running even when the Thermostat temperature is Raised
If the AC fan keeps running even when the thermostat is set to a higher temperature, i.e when it should be OFF, confirm that the fan is set to AUTO mode.
If it is set to HIGH or LOW, the fan will keep running at the set speed regardless of the set temperature while the AC compressor may keep cycling on or off.
Note: If the fan runs continuously, you may be mistaken in thinking that the compressor is running too. Double-check if this is the case. It is possible that it is only the fan that is running continuously.
Why the RV AC compressor may Keep running when turned off
If your RV AC compressor continues running even when it is switched off at the thermostat, it may be that the thermostat is faulty, there is a damaged relay with contacts welded together, or a faulty board in the AC.
As a first step, try resetting the thermostat (consult your AC manual on how to you can do this).
If this does not work, you may have to consult a qualified RV AC technician or if the RV is still under warranty, contact your dealer to provide technical support.
How to Stop an RV AC that wont Turn off
If the AC compressor does not turn off, as a temporary fix reach for the circuit breaker supplying it with electricity and switch it off there.
If the temperature is too cold because it has been running continuously, you may open the doors to let the warmer air in.
Next, reset the thermostat (consult your AC manual) and check if this fixes the problem.
If the fault still persists, contact a qualified RV AC technician or if the RV is still under warranty, contact your dealer for support.
Final Thoughts
If the AC keeps running even when it is turned off at the thermostat, confirm if it is the fan that is still running, the compressor, or both.
If it is the fan, check the thermostat and confirm that the fan mode is set to AUTO and not LOW or HIGH.
If the AC compressor keeps running, try resetting the thermostat and if this does not work, contact a qualified RV AC technician or if the RV is still under warranty, contact your dealer for support.
