Esbar Bunk Heater

Yeah it needs to go to the dealer and checked out.

 

They are fairly simple. They need fuel and fire to work. You are missing one or more of those.

 

Their is not much to them. Usually they won't fire up when they get older from carbon buildup. Usually you can hear the little fuel pumpout side by fuel tank clicking when heater is running but not much you do to fix them if the it won't ignite the fuel and start but replace the stuff inside. You can tell they are getting carbon buildup when they get older because you see all the white smoke when they try to start.

 

The red light lights up on mine once in awhile, seems to light up more if the heat is set at 80 plus, 78 or less works best. I've tried idling the truck thinking the batteries are low on juice. point is it still working.

 

There is maintenance that has to be done to them every year.

I do not allow my drivers to mess with them because they can be damaged by someone who doesn't know what they are doing.

The problem is with most people, they lack the tools and/or knowledge to deal with it so it is better to take it somewhere to have it looked at and fixed right.

By the way, you guys who have them, you do turn them on once a month every month to keep them in running shape?

https://esparparts.com/preventative-maintenance-n-21.html

 

For the first few months I had mine..I didn't know how to work it...I knew it was on the truck when I bought it.....My flatbed dumps the air when I set the brakes so a lot of times I sit with just my trailer brakes set. I would go to the back and try to turn it on...but nothing would happen...then I learn you gotta have my truck brakes set for it to turn on.........

Yes running them once a month for about 15-20min keeps em running efficiently. I took mine to thermoking about 2.5 years ago and got the maintenance done to it...I think it was like $389... but I also had the same problem the OP had. It blew air but it never got cold. I think they also replaced the igniter or something....I can't remember but that thing is good to have because I hate idling!!!!!

 

I will add this, the little computer that's inside them cost me $650 to replace.

One reason why I stress don't mess with them unless you know what's going on.

 

Other than experimenting with the temps and changing a filter, I don't mess with em. made the mistake of covering the intake vent under the bunk, the bumps in the road moved a light box over and covered it. never should of kept it there, left a sheet of paper in the wrong spot, it managed to make its way to the vent. now I check it. a recepit can change things, it doesn't take much