Comfort Pro Apu Manual
Carrier Comfort Pro Apu Manual
- Are you in need of a heating or cooling service? No need to worry, Comfort Pro is here for all of your HVAC or furnace needs. Call us today to schedule!
- The ComfortPro consists of an APU (auxiliary power unit), an HVAC (heating. Manual Operation: Manual control of the HVAC to provide a comfortable.
. Change the engine oil and filter at manufacturers’ recommended intervals, typically 1,000 hours. At the same time, check belts for proper tension and condition. Cracks, glazing or excessive stretch are signs they need replacement. Change the fuel filter at the recommended interval, which may or may not be aligned with oil change hours.
Inspect the air cleaner at the recommended interval. If dirty, change it.
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If the engine has a cooling system separate from the truck engine, change coolant at recommended intervals or at the first sign of cloudiness in the coolant or deposits inside the radiator. If the main engine coolant also cools the APU engine, just maintain the main engine’s cooling system. When changing main engine coolant, make sure to bleed air from the APU system until full, or its engine could be destroyed. The air filter on the climate control unit of a Carrier Transicold ComfortPro APU cleans air for heating or cooling. This type of filter should be inspected at oil change intervals and cleaned if necessary.
Carrier Comfort Pro Apu Manual
If a pleated paper or similar filter is used, change it when it becomes obviously clogged. Check your owner’s manual for details.
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Cleaning the ComfortPro air cleaner normally doesn’t work, so replace it when dirty. To replace the air cleaner, which is located at bottom, remove the covering and slide out the unit.
That also gives you access to the blue spin-on engine oil filter (lower right). The large belt on the left drives the 120-volt generator, and the smaller one on the right drives the cooling fan. Check both for tension and condition at every oil change.
The sight glass on top of the receiver-drier on a ComfortPro unit should be checked for obvious bubbles, indicating a probable low charge or problem with the internal refrigeration system. Have the system recharged if bubbles appear. Some sight glasses also have an indicator that changes color if moisture gets into the system; in that case, evacuate and recharge the system and replace the drier.
I bought a used Milton truck back in Sept. Up until recently i've only did routine maintenance which is fairly cheap seeing as how it's only every other month. In all honesty I spent more money on the APU that's on the truck then the truck itself, until the end of March I put it in the shop for a PM, and to have an oil leak check.
Which ended up costing $6k. But anyway, a back in January the APU stopped putting out 120vac. It would start and run just fine (after i bled the air out of the fuel line) but it wasn't putting out any current which meant all I could do was keep the engine warm and recharge my batteries. So every month when i'm home on hometime, i'll spend a couple of hours tinkering with it.
The first thing i found was that Kenworth MHC neglected to put a shut off valve on my coolant lines, which was an issue when i was replacing the water pump. After that i had the oil pressure sending unit act all crazy for two days and kept making the engine shut off. And then recently I couldn't even get it to start because it kept saying 'Main Engine Interlock'. So after finding copies of the service and owners manual i dug deep. Found that there's a relay that control the engine interlock. Mine had seized up. Jump'd it over to test, and the APU started just fine.
I was even able to buy the fuse in the Pilot for $10. For the no voltage issue, the manual says if there's no voltage before the 35amp breaker, then the capacitor is the suspect, but the only way to test is with a good capacitor.
Carrier Comfort Pro Apu Manual
Kept digging through the manual and found that there's three capacitors in the actual HVAC unit under the bunk. Got down to it and pulled the large one out. Wired it in and fired it up and got my little lighting bolt back. I shut everything down pretty quick because i wasn't sure if it was the right size or what not. So now i have to wait until Monday to get two capacitors from the TransCarrier dealer in Florence, Sc so i can get my APU back up and running.
In all honesty if it turned out that the generator was shot, i was just going to buy another belt driven compressor and a 300amp alternator and rig in there and call it a day. I know when i was searching google for answers as to why my Control Panel would say the main engine was on when it wasn't, i saw some other people that were having the same issue. Hopefully they make it here and read this. Labor rates are crazy!!!