Nails pests like mice and rats and corrosion can all be a contributing factor.
Rv ac thermostat no power.
The 12 volt power is one of the small gauge wires at the roof ac control box and the 3 wires going to the wall tstat supply the power to the wall tstat.
The thermostat also draws power from the same panel.
If there is no power to the thermostat then you will need to call a professional electrician to run a new wire from the hvac unit to the thermostat.
Examine the ac s power system.
There is a 12 volt fuse in the 12 volt fuse section of your rv for the roof ac.
When the rv ac not turning on at all you will need to find out if it gets the power supply.
If the thermostat also does not work you can change or repair the power panel.
Surge gaurd no power to rv.
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There is a fuse or resettable breaker somewhere in your power center that controls power to this.
If it is battery operated not just battery backup then the thermostat uses the internal battery to power the display and relay not external incoming power.
No ac power from pole.
The control box in the ceiling depending on the model a c you have has a fuse as well.
If the rv s air conditioner makes no noise it might be that controls aren t receiving sufficient power.
Clip the red lead to the power wire and the black lead to the negative wire.
Another reason why there s no power to the thermostat could be due to a bad transformer or even a faulty wire running from the thermostat to the transformer.
Household thermostats normally run on 24v ac power but rv thermostat runs on 12v dc.
You might need to replace the capacitors if the fan or the compressor start slowly or they don t blow any air blows air weakly only blows warm air periodically stops the lights dim when it runs other air conditioner trips a breaker.
Many times the thermostat gets it s power from the circuit board on the roof ac unit some circuit boards will have a fuse on them if that fuse is blown the thermostat may not turn on.
Winnebago industries owner s forum.
And some systems get power to the a c controls through the furnace circuit.
Test the power wire to the thermostat.
The roof ac does not convert the 120 volts to 12 volts.
If you have an outside inspection panel on this you might check the breaker in there.
No aux power from house batteries.
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