Household thermostats normally run on 24v ac power but rv thermostat runs on 12v dc.
Rv ac thermostat no power.
Winnebago industries owner s forum.
And some systems get power to the a c controls through the furnace circuit.
No aux power from house batteries.
The control box in the ceiling depending on the model a c you have has a fuse as well.
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.
The thermostat also draws power from the same panel.
When the rv ac not turning on at all you will need to find out if it gets the power supply.
The first thing to look into is the 12v panel if the fuse is blown or the breaker is tripped.
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.
Surge gaurd no power to rv.
Pure power opens navistar engine research center in south carolina.
Using a multitester switch the tester to a range that will measure 24 volts ac.
Clip the red lead to the power wire and the black lead to the negative wire.
No ac power from pole.
The roof ac does not convert the 120 volts to 12 volts.
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.
If the thermostat also does not work you can change or repair the power panel.
Nails pests like mice and rats and corrosion can all be a contributing factor.
Test the power wire to the thermostat.
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.
If the rv s air conditioner makes no noise it might be that controls aren t receiving sufficient power.
Navistar maxxforce engine forum.
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.
If you have an outside inspection panel on this you might check the breaker in there.
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.
Examine the ac s power system.
