APU not blowing hot air

Off you go to the shop. Get used to that.

 

Cut it off bother onside and out. Cut it back on and hit the reset button.

 

Nm

 

I know the thermoking is not integrated with the Webasto heater and can only assume the espar is the same. Look for another panel or knob to control the espar.

Here are some panel pics of the espar:
https://www.google.com/search?q=esp...m1trPAhUP8WMKHUJoD38Q_AUICCgC&biw=360&bih=512

TA

 

My Espar is controlled with the TK APU controls... As long as it was installed as an add on with the apu his should be the same. Whoever said it needs to be cleaned every year is wrong.. Mine went 5+ years of me owning it and probably the 3 yrs before that, that i didnt own it till the heater clunked out.. Never touched a thing on the heater..

 

Are you sure it's hooked up to the TK panel?

Maybe the truck came from the factory with the bunk heater installed and the previous owner just added the APU without the heater. This could mean you could have a separate panel for the heater.