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Wanna give a huge thanks to yall. It was a bad diode thing. Replaced with new and wired it correctly (definitely was off before) and no heat and ac works properly

Got it when I get off work in a few ill grab the multimeter and check that.

We are talking the front unit by the commanders feet. If I turn AC off the fans stop completely. No high or low heat. Attached is a photo of the position in which hest doesn't work.

It does blow hot in AC mode with the compressor disconnected.

Everything is wired correctly. Is there specs to test the resistor? I'm considering just ordering a new one to see.

Just picked up this 07 M1165 this week. Got the 1101 trailer a few weeks ago. Got a few things to iron out on her like the heat cause it's cold here right now but other wise she runs and drives just like I remembered they did.

Good Evening all, Relatively new to the forum but have a few questions. On my M1165, the AC blows cold and works as it should, but when I switch it to heat the blower motor cuts off and i get no air out of the vents. It does the electronic heater valve deleted with a manual one in it's place...