Hello, I have a 2016 Shasta forest river 30 foot travel trailer. Ac and heater were working fine and now both don’t work. I have checked all circuit breakers and all seem fine. I have checked all fuses with a tester all were good but I changed the ac fuse anyway. The battery is working because when I unplug the rv from the 30 amp plug in the lights and all work. Everything thing else are wirking. Lights, frig, micro, radio, bump out. I changed the Tstat. I checked my red Tstat wire with a 12vd bulb and it did not light up. I think I don’t have any juice to my red wire?Any suggestions would be greatly appreciated.JoyNOTE: Did you see the "Announcement : &bigstar;&bigstar;READ BEFORE POSTING HERE&bigstar;&bigstar;" located at the top of this forum? "Forum Posting Help and Support is reserved for questions on how to post in the forums, signature and photo testing, reporting website or member account issues. Please avoid using Forum Posting Help and Support for RV related questions, as doing so can delay responses to your thread. Instead, create future threads in the RV FORUM which corresponds to the subject of your topic. Thank-you!"

Sounds like you need to trace the power wire from your thermostat to the power source.

Same thing happened to me, but with the slide out. Checked everything and could not figure it out. Finally found the breakers/fuse things on the frame rail right past the battery. has a wire that goes on top and one on bottom. I had 3 of them. Everyone of them was loose. After I tighten them all up the slide out worked fine.john

Definitely sounds like a tstat problem.This forum should be labeled "Post everything here and we'll move it."

On many RV's the thermostats on fridge, furnace/ac are run off 12v.Yes you tested the 12v with the light coming on but the thermostats need a full charged 12v to operate, light do not they will come on with a low battery until the battery dies.Check the output of your converter AND check your coach battery at the battery. Any type of 'low' voltage will cause the thermostats not to work. The heat and ac will come on but when it hits the temp set and turns off it will not come back on if low voltage is present.Also, if you have been "flicking the on off switch on the thermostat" trying to get it to work you've put it in between the delay mode and it will appear it is not working.1.Step away from the thermostat, 2.quit flicking the on off switch, 3.put it on the ac mode, 4.set the temp for a temp where you know it 'will' come on depending on temps where you are located right now.5. and WAIT...for the delay to cycle.My delay is pretty long or so it seems like it. And to this day many times when I turn it on, I still get that panic feeling that my ac is broke when it doesn't come on immediately.

Hello and thank you for all your advice . A few questions: 1. How can I trace the power from my Tstat to the power source? 2. I can’t see any wires or fuses by my battery? 3. I tested our battery and it had a full charge? 4. Interesting info on the delay in the Tstat but I have no powers going to the Tstat. I also am plugged into a 30 amp line and have the battery on???Any suggestions ?Joy

Help AC and heater not working! | Good Sam Community

Joygoetz
Explorer
Sep 12, 2018
Hello and thank you for all your advice . A few questions: 1. How can I trace the power from my Tstat to the power source? 2. I can’t see any wires or fuses by my battery? 3. I tested our battery and it had a full charge? 4. Interesting info on the delay in the Tstat but I have no powers going to the Tstat. I also am plugged into a 30 amp line and have the battery on???

Any suggestions ?

Joy
rockhillmanor
Explorer
Sep 12, 2018
On many RV's the thermostats on fridge, furnace/ac are run off 12v.

Yes you tested the 12v with the light coming on but the thermostats need a full charged 12v to operate, light do not they will come on with a low battery until the battery dies.

Check the output of your converter AND check your coach battery at the battery. Any type of 'low' voltage will cause the thermostats not to work.

The heat and ac will come on but when it hits the temp set and turns off it will not come back on if low voltage is present.

Also, if you have been "flicking the on off switch on the thermostat" trying to get it to work you've put it in between the delay mode and it will appear it is not working.

1.Step away from the thermostat,
2.quit flicking the on off switch,
3.put it on the ac mode,
4.set the temp for a temp where you know it 'will' come on depending on temps where you are located right now.
5. and WAIT...for the delay to cycle.

My delay is pretty long or so it seems like it. And to this day many times when I turn it on, I still get that panic feeling that my ac is broke when it doesn't come on immediately.
2oldman
Explorer II
Sep 12, 2018
Definitely sounds like a tstat problem.

This forum should be labeled "Post everything here and we'll move it."
JOHN_LAURA
Explorer
Sep 12, 2018
Same thing happened to me, but with the slide out. Checked everything and could not figure it out. Finally found the breakers/fuse things on the frame rail right past the battery. has a wire that goes on top and one on bottom. I had 3 of them. Everyone of them was loose. After I tighten them all up the slide out worked fine.
john
donn0128
Explorer II
Sep 12, 2018
Sounds like you need to trace the power wire from your thermostat to the power source.

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Help AC and heater not working!

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