Mine did this exact thing and I took it over to Carrier. I spoke with the technician directly and he said the sensor was bad so he replaced it along with the wire that attached to it. Been working fine ever since so far.
The temperature sensor and several other issues can be caused by a bad ground. The temperature sensor is just a switch that opens at a designated temperature to interrupt a circuit by removing the ground. If you have a test light connect the clamp end to a 12 volt source and touch the probe end to the terminal on the temperature sensor. Your test light should be lit. If not make sure the sensor is grounded by touching the probe to the base of the sensor. If you don’t get light corrosion or too much thread sealer has insulated the sensor from ground. Attach a jumper wire to a good ground and clamp it to the base of the sensor and again check it with your test light or just start your apu and see if it runs. Just grounding the wire to the sensor will make it run but if it does overheat it won’t shut down….so don’t!
I had a problem today with this sensor. I am parked at a receiver all weekend. I pulled the wire towards the sensor and zip tied it. And it is working finally. But thank you for the video it really helped
Thank u so much for this video.. I just bought a truck last week with the comfort pro apu . I fired it up an it ran for about an hour an it shut of an gave me the exact scenario you did here I did not know what to do..Now I do
Glad to see that you stressed not to over tighten the sensor. So many times the sensor would get replaced, over tightened, a week later the unit was back with the same issue. At that point the tech would call technical support, and he would talk to me.
Thank you for posting this video. Your symptoms are identical to mine. After watching your video I went and bought the sensor which is now around $120 as mine has been retro fitted. After installing it earlier today. It is running tonight without problem. Thank you once again for posting this.
I work on these all the time in my fleet two well 3 are sensor or the wire or both and the fuel pump top of fuel pump have one way valves and they wear out and allow fuel you flow back out of line or the factory clamps allow air in the line other then the small problems its a good unit
I got a question, what red lights are supposed to light up during normal operation? I got solenoid and alternator light on when its running. Is it normai?
Okay Robert the heat sensor for where it overheats has been replaced the thermostat has been replaced but every time I turn on the AC unit itself it shuts off both oil and coolant are full? What's next
I’m having the same issue. I haven’t resolved this yet, but noticed the condenser fan is not kicking on on the back of the truck as well. I am wondering if the fan is bad. The app runs fine and never shuts down as long as I don’t turn the AC on.
At the 1:55 mark, the hose that you have your hand on, mine isn't connected to anything and the a.p.u keeps shutting off telling me to check the engine. Is it supposed to be connected to something? I'm new to a.p.u's
The coldest mine gets is about 87 degrees in the cab at night you can get into the 60s but that doesn't count because it's only about 70 at night what do you think could be wrong
Low refrigerant. If the condenser hoses are not protected when routed into bunk, the body sheet metal will run/cut the hoses...I know. I just had this happen. Fortunately (4)hose clamps, a 3/8” barbed union and 4 cans of 134 got me going. I plan on pulling unit down to a vacuum and replacing the filter drier.
If the DCP indicates Interlock, it means that either the interlock is wired in and the key is in the on position, which powers up the circuit to let the system know the main engine is running, or there is a fault in the harness, can't remember the pin number off hand.
My Apu is behind a fairing on Volvo. I think this is a design flaw. Every nite this week the dang thing shuts off after a few hrs..I wake up frozen! Been -5 in NY. Anyway The only 2 codes after 8 nites is engine overheat! Not 8 codes just 2. Owner said it's a programming issue..I call b.s Im paying 800 a week rental for an 800# useless unit plus idling fuel when I really gotta sleep.
Please sir I have Apu it run fine but the A/c is not working. I tested the fan and the wire is fine . I open my sleep bed and check the motherboard that the a/c get it power from no power. Don’t know if it has a fuse or the motherboard is damaging?
Yes, I can help you. I'm fixing to hit the bed. I'll try and get something posted soon for you. If i don't respond soon, hit me with a comment to remind me.
If the display shows ccu main breaker trip or HVAC breaker trip, both of those can not be reset by hand. If you press clear/reset on panel, it will go away. If it keeps happening, the household power voltage (110-115V) could be too low to run your air conditioning compressor/microwave..etc. This is most often caused by faulty capacitor for apu generator located on rear panel inside apu under the radiator. It is a 40 microfarad capacitor. One way to check if it is bad, use a multimeter set to VOLTS A/C and test at power outlet with unit running. If 105 or below, it is weak and needs replaced. If doing it yourself, remove the bolts on lower cover (1/2 in.) Capacitor is a silver and black cylinder with 2 wires. Cut one at a time, never both together or electric shock could happen! Strip wires from apu back and install new capacitor with hardware it comes with (butt connectors to crimp on using crimper pliers with heat shrink and capacitor holder and nut.) Does not matter which wire you connect first and where, it is universal. Warm up the connectors with a lighter to shrink the connector wrap and zip tie the extra wires up to keep then off the exhaust. This should fix most instances for breaker reset but if not, theres trouble with the main board under the bunk or wiring to it. Test output voltage with unit on, should be in 115-120 volt range.hope this helps!
I have the same problem of my unit shutting down for no apparent reason. In the picture next to the guys hand there is a little Red wire that comes forward and attaches to what looks like a small plug. That is a temperature sensor. Sometimes the wire becomes lose, and the unit will shut down. At some point I am going to get a new wire and sensor installed, but for now a really tight mini zip tie keeps it snug and the unit runs. I read somewhere that there was a recall on a Comfort Pro sensor, but every time I go into one of the Carrier shops they treat me like an idiot, charge me $ 200 , never tell me what they are doing except for that it is a lose wire and all is good now. Well it runs for a few days until the roads jar the wire lose again and the unit will only run for a few minutes or hours but always shuts down until I re secure that little Red wire. That is my experience and what I have done to resolve the issue.... G
Gregg Svanda Thanks for the feedback. The mechanic at my local Carrier dealer in Springfield MO told me half the time a new connector is all that's needed. The connector needs to be tight.
The truck that I drive has a 2 yr old apu carrier Screen says dam if you do dam if you don’t Check the trouble shooting settings in the book says don’t touch take to the dealership your not a mechanic
30-266-01K . That's a very common number for the Kubota Z482 used in the PC6000, PC6002, etc. Should be the same in all the models since the engine hasn't changed. To the best of my knowledge its a normal open (no continuity from the terminal to ground) and closes (grounds out and causes shut down) if temp reaches 245°F
Mine starts but starter is still engaged, when it disengages it runs for like 3 seconds then shuts off then same thing over and over again. Light on sol hold and sol pull only then shuts off
my apu shut down after 30 minutes then restart again within 1 minutes next same turn on turn off, i pay lot of money carrier company, but still same, any body help me please
Mine did this exact thing and I took it over to Carrier. I spoke with the technician directly and he said the sensor was bad so he replaced it along with the wire that attached to it. Been working fine ever since so far.
The temperature sensor and several other issues can be caused by a bad ground. The temperature sensor is just a switch that opens at a designated temperature to interrupt a circuit by removing the ground. If you have a test light connect the clamp end to a 12 volt source and touch the probe end to the terminal on the temperature sensor. Your test light should be lit. If not make sure the sensor is grounded by touching the probe to the base of the sensor. If you don’t get light corrosion or too much thread sealer has insulated the sensor from ground. Attach a jumper wire to a good ground and clamp it to the base of the sensor and again check it with your test light or just start your apu and see if it runs.
Just grounding the wire to the sensor will make it run but if it does overheat it won’t shut down….so don’t!
I had a problem today with this sensor. I am parked at a receiver all weekend. I pulled the wire towards the sensor and zip tied it. And it is working finally. But thank you for the video it really helped
What do you mean secure witj zip tie mine seems snug....
Thank u so much for this video.. I just bought a truck last week with the comfort pro apu . I fired it up an it ran for about an hour an it shut of an gave me the exact scenario you did here I did not know what to do..Now I do
Glad to see that you stressed not to over tighten the sensor. So many times the sensor would get replaced, over tightened, a week later the unit was back with the same issue. At that point the tech would call technical support, and he would talk to me.
Thank you for posting this video. Your symptoms are identical to mine. After watching your video I went and bought the sensor which is now around $120 as mine has been retro fitted. After installing it earlier today. It is running tonight without problem. Thank you once again for posting this.
Was your Apu shutting off often before you change the sensor?
Were do you buy the sensor?
Hey good morning sir! I replaced the sensor but I’m still having the same issue. Where did you purchase the wire harness?
thank you so much. i just fix problem. it just happened today. and fix in minutes. may ALLOH gev you revords.
I work on these all the time in my fleet two well 3 are sensor or the wire or both and the fuel pump top of fuel pump have one way valves and they wear out and allow fuel you flow back out of line or the factory clamps allow air in the line other then the small problems its a good unit
I needed this thanx
Thx so much you saved my ass tonight...
I broke mine inside it was tighten almost all the way, took hell of time to find right person to take it out.
My apu runs fine on its own but when I turn the ac on , it shuts off .
Thank you so much sir that’s helped me a lot and I save a lot of money thank you again so much to your help and God bless you and your family
gracias me ayudo mucho
I got a question, what red lights are supposed to light up during normal operation? I got solenoid and alternator light on when its running. Is it normai?
Thanks for sharing, it helped me solve my issue
Okay Robert the heat sensor for where it overheats has been replaced the thermostat has been replaced but every time I turn on the AC unit itself it shuts off both oil and coolant are full? What's next
I’m having the same issue. I haven’t resolved this yet, but noticed the condenser fan is not kicking on on the back of the truck as well. I am wondering if the fan is bad. The app runs fine and never shuts down as long as I don’t turn the AC on.
@@Poppi3579check your relay for that fan could be bad connection or corroded tips at contact
What’s the part number for the sensor and where can I buy it? Having same issue
Thanks
Can you tell me what type of unit you have. I have the same one. It starts with a PC600 or 220
Is it normal to have oil or how much oil on your top of the engine it’s like the injectors I think
Where is the oil pressure sensor located
At the 1:55 mark, the hose that you have your hand on, mine isn't connected to anything and the a.p.u keeps shutting off telling me to check the engine. Is it supposed to be connected to something? I'm new to a.p.u's
Clint Bulloch That's an overflow tube. It's not supposed to be connected to anything. What fault light is lit up in the back of the apu?
Thanks good information
The coldest mine gets is about 87 degrees in the cab at night you can get into the 60s but that doesn't count because it's only about 70 at night what do you think could be wrong
Low refrigerant. If the condenser hoses are not protected when routed into bunk, the body sheet metal will run/cut the hoses...I know. I just had this happen. Fortunately (4)hose clamps, a 3/8” barbed union and 4 cans of 134 got me going. I plan on pulling unit down to a vacuum and replacing the filter drier.
Will the sensor cause to have main engine interlock?
If the DCP indicates Interlock, it means that either the interlock is wired in and the key is in the on position, which powers up the circuit to let the system know the main engine is running, or there is a fault in the harness, can't remember the pin number off hand.
Please you know what’s the part number for the temperature sensor
This is exactly what happened. Hopefully it’s in stock 😮
My husband has had the alternator replaced 5 times in a year on his Comfort Pro. We have no idea what us happening with it. Thoughts?
I was told there's a car alternator that fits it. It's a Chevy small car.
Mine says overload ! I replaced alternator belt because it broke. Any idea how to clear this code or what else maybe wrong
How about the oil pressure sensor?
Mine shuts off. Light indicates low oil pressure. Oil level is full.
Brian Wade It might just be a censor. I would start there first.
Apu info at Reeferworks.thinkific.com
Oh good grief.
Tim ross is fraud don’t go and buy his courses
Thank you
My Apu is behind a fairing on Volvo. I think this is a design flaw. Every nite this week the dang thing shuts off after a few hrs..I wake up frozen! Been -5 in NY. Anyway The only 2 codes after 8 nites is engine overheat!
Not 8 codes just 2. Owner said it's a programming issue..I call b.s Im paying 800 a week rental for an 800# useless unit plus idling fuel when I really gotta sleep.
How do you turn the water off to the apu.
Mine says oil. Problem is it's full of oil.
Oil pressure sensor
My apu will not crank turn just once sound like weak battery but the truck starts with no problem?
I'm in the market to buy a new Carrier APU what is a good price with installation in your opinion? And do you recommend any shop? Thank you.
i know one guy, they work cheap
Get a thermo king 😂
Thanks.
Please sir I have Apu it run fine but the A/c is not working. I tested the fan and the wire is fine . I open my sleep bed and check the motherboard that the a/c get it power from no power. Don’t know if it has a fuse or the motherboard is damaging?
It might be blower motor ,i had same issue with mine ,cost me $1000+ with labour and parts
My ac function only runs for about 5 min at first then dies every minute after that..I figure it's because of a winter setting?
What does “sol hold “ mean when it’s lit up on the controller?
Thanks
The fuel solenoid is powered up to allow the engine to run.
@@TheHitchiker42
Ok,
Thanks for the information..
I have an issue with my comfort pro it was running fine shut it down fired it up later that same day ran terrible and smoking any help
Matthew Beam what color is the smoke? Does it smell like fuel or oil?
Hi my apu won’t crank up and in that Apu control the light that is on is the one that say glow plugs any idea what is that and where is located??
Yes, I can help you. I'm fixing to hit the bed. I'll try and get something posted soon for you. If i don't respond soon, hit me with a comment to remind me.
I don't see the sensor on mines either?
What kind of belt is that on the generator..
That is red on new , older has black and thiner
Where is the APU breaker located
If the display shows ccu main breaker trip or HVAC breaker trip, both of those can not be reset by hand. If you press clear/reset on panel, it will go away. If it keeps happening, the household power voltage (110-115V) could be too low to run your air conditioning compressor/microwave..etc. This is most often caused by faulty capacitor for apu generator located on rear panel inside apu under the radiator. It is a 40 microfarad capacitor. One way to check if it is bad, use a multimeter set to VOLTS A/C and test at power outlet with unit running. If 105 or below, it is weak and needs replaced. If doing it yourself, remove the bolts on lower cover (1/2 in.) Capacitor is a silver and black cylinder with 2 wires. Cut one at a time, never both together or electric shock could happen! Strip wires from apu back and install new capacitor with hardware it comes with (butt connectors to crimp on using crimper pliers with heat shrink and capacitor holder and nut.) Does not matter which wire you connect first and where, it is universal. Warm up the connectors with a lighter to shrink the connector wrap and zip tie the extra wires up to keep then off the exhaust. This should fix most instances for breaker reset but if not, theres trouble with the main board under the bunk or wiring to it. Test output voltage with unit on, should be in 115-120 volt range.hope this helps!
Mine doesn’t have that
Mine started doing this and it was the loose wire. Mine was in the back on the right up top. On a 2019 international.
Mine was/is doing the same. I'm going to check this out! Good luck
Mine doesn’t even have the red sensor
I have the same problem of my unit shutting down for no apparent reason. In the picture next to the guys hand there is a little Red wire that comes forward and attaches to what looks like a small plug. That is a temperature sensor. Sometimes the wire becomes lose, and the unit will shut down. At some point I am going to get a new wire and sensor installed, but for now a really tight mini zip tie keeps it snug and the unit runs. I read somewhere that there was a recall on a Comfort Pro sensor, but every time I go into one of the Carrier shops they treat me like an idiot, charge me $ 200 , never tell me what they are doing except for that it is a lose wire and all is good now. Well it runs for a few days until the roads jar the wire lose again and the unit will only run for a few minutes or hours but always shuts down until I re secure that little Red wire. That is my experience and what I have done to resolve the issue.... G
Gregg Svanda Thanks for the feedback. The mechanic at my local Carrier dealer in Springfield MO told me half the time a new connector is all that's needed. The connector needs to be tight.
Mines is completely gone,is that a hot wire or just a ground wire?
What do you mean secure it wotj zip tie what part are you securing mine looks snug as well as the red wire
Do you need to hit the reset button on the panel?
The truck that I drive has a 2 yr old apu carrier
Screen says dam if you do dam if you don’t
Check the trouble shooting settings in the book says don’t touch take to the dealership your not a mechanic
I have my comfort pro APU shut down due to low voltage in gen
Anyone have a part number for this? I seem to be having trouble finding it.
30-266-01K . That's a very common number for the Kubota Z482 used in the PC6000, PC6002, etc. Should be the same in all the models since the engine hasn't changed. To the best of my knowledge its a normal open (no continuity from the terminal to ground) and closes (grounds out and causes shut down) if temp reaches 245°F
Tombol otomatis nyala,tp mesin AC g bisa mati, apa ada sekring lain
What if you have a THERMAL KING TRIPAC EVOLUTION APU . Does it have them l lights too on the inside?
No. The Thermal King Tripac has no lights. It has codes on the inside of the cab where the control panel is.
Mine starts but starter is still engaged, when it disengages it runs for like 3 seconds then shuts off then same thing over and over again. Light on sol hold and sol pull only then shuts off
Did you findout why your starter stayed ingaged mine does the same thing
Mine is doin same thing, did you figure it out
CALL OM PRAKASH DAYAL
what is your phone number ik13226@gmail.com
Om parkash engine wala mistry
my apu shut down after 30 minutes then restart again within 1 minutes next same turn on turn off, i pay lot of money carrier company, but still same, any body help me please
NEW ROYAL LLC What is the red light lit up next to in the back of the housing?
inside cab APU display check APU engine, they engine start, run, i don,t know any special lol they show me ?? what plz help me
THANKYOU FOR HELP
Watch the video and see the diagnostic panel at the engine. There will be a red light lit up next to the fault code.
NEW ROYAL LLC APU run then shut down for the self diagnostic check ,then it restarts and runs normal cycle