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