Carrier Apu Heater Not Working

Its a carrier and runs off truck s coolant. Set thermostat to 90 until cab is quite warm then turn it do read more. Comfortpro diesel auxiliary power units apus from carrier transicold are the trucking industry s all around performance leaders.

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Carrier apu heater not working.

If cold and plugged in and cranks real slow block heater not working. The heat mode will not function if the temperature is higher than 85 f. If your carrier air conditioner or heater doesn t seem to be working properly check to verify that the hold button isn t engaged. Hvac stops working how to trouble shoot it.

Make sure the main power. Apu will not start. Control panel lights are on and will not turn off. Next time at home i ll check block heater.

I have a carrier comfort pro apu and in the top right hand corner of the driver s control panel is a lightning bolt with off i have no ac no heat and no electric but the generator charges. Here s the problem apu turns on no problem a few minutes if it running alone i start the heater n not more then 20min if it running the apu seems to wanna die so the heater turns off automatically and when the engine settles up the heater turns on again. The heater will turn on only if the heat low temperature is too low to adjust the temperature see below. I have been doubting my batteries reliability lately truck is 2 1 2 years old now.

The under bunk apu heater doesn t heat run very long. No other apu offers the combination of air conditioning heating cab power engine warming truck battery charging optional shore power connectivity and a 2 000 hour maintenance service interval found in the comfortpro diesel units. I have a carrier pc6000. Check the outdoor cooling or condensing unit to see if it s running.

Thermostat location selection believe it or not the location of your thermostat can make a big difference when it comes to its effectiveness. Review by david march 1 2015. Even with the thermostat closed it should circulate coolant somehow. Notice hours 00000 the display shows heat low.

1 2 3 turning the heater on off 1 press to activate the heater. Upon start up there is no exhaust smoke it heats up gets very hot like normal. If your carrier air conditioning unit won t turn on there likely is an issue with its power source.