Question about Carrier Heating & Cooling

3 Answers

Apu starts fine but no fan no heat and no air conditioning and no 120 volt.

Posted by on

3 Answers

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Hi there, Would this be a preheat / comfort pro APU? If so I would start with removing the top cover on the APU. There will be a fuse holder with a 20 amp fuse on the back wall on the left side of the APU above the APU controller. Check and see if the fuse is blown. If it's not then the CCU board under the bunk/ bed isn't seeing power. Either 12v harness or the communication harness both from the APU controller to the CCU board are rubbed on the frame, or the CCU board isn't transferring power properly. The CCU board is under the bunk. There are 4 3/4 bolt's that hold the lid on. Start the APU and look at the board you should have green light's light up. these light's are called input light's. Then chose a function on the driver control panel as in heat, a/c, low or high fan and see if they come on. If the driver control pane are showing the function on look down at the CCU board and see if there are orange light's on. these light's would be your output light's. There's a lot of cause's for this problem if you need further help feel free to ask. Thank's

Posted on Dec 01, 2013

  • Cody Aery
    Cody Aery Feb 18, 2016

    Orange lights did not come on. What would be the next step in troubleshooting?

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have same problem, on CCU I have only input lights on , why my output lights off(hvac not turning on) ?

Posted on Jun 19, 2014

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 81 Answers

Out sideboard faulty or indoor board. whats an apu?

Posted on Nov 09, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Carrier apu blows cold air for twenty seconds and fan quits engine keeps running and fan starts again but only blows cold air for another twenty seconds


Have you tried rebooting the system? Just turn off the breaker for a few minutes.If you need more questions for your Air Conditioning Repair needs, check us out online.

Jul 07, 2017 | Carrier Heating & Cooling

1 Answer

I need help troubleshooting my Heil home HVAC system. The system worked fine at the end of last year.


sounds like a bad contactor if you have 24 volts at coil and does not pull in. by manually holding contactor in you are doing what the contactor is suppose to do with 24 volts applied.

Jun 09, 2015 | Heating & Cooling

1 Answer

No heat unit is blowing cold


thermostat, heat sequencer, heat elements, fusible link no 240 volts. fan works on 120 volts.

Jan 24, 2014 | Ruud UBHC Air Conditioner

1 Answer

Ruud troubleshooting


do you have the lower door in place tight ?? because there is a door button switch. so if its not pushed in all the way you would have no power at furnace. also make sure nobody turned off the on off service switch usually above furnace or sometimes one at top of stairs and one down by the furnace .if those suggestions don't work you might want to turn each breaker off then back on incase one is tripped. if that don't work check for 120 volt at your fan timer board also it may have a automotive style fuse on the board which if blown it wont do anything. if there is 120 volt at board and the 24 volt circuit fuse is good its probably the fan timer board.

Jan 17, 2014 | Water Heaters

1 Answer

I have gas heat. The purge fan will come on and the air handler fan will come on but the furnace will not ignite.


If the voltage to the igniter is only 45 volts, then the board is the problem. You should get 120 volts to the igniter once it starts glowing

Dec 22, 2012 | Heating & Cooling

2 Answers

Heat coils in central air conditioning unit look fine under examination, checked with an ohmmeter both coils showed continuity. Power at both coils indicated 110 volts. Unit fan runs fine but there is no...


Are you getting 120 vac or 220 vac at the unit? Check the voltage at the first terminals inside the unit as well as the breaker. You should have 220 vac at the elements and you are dropping a leg some where.

Jan 17, 2009 | Heating & Cooling

1 Answer

MY BLOWER WAS REPLACED IN THE SUMMER BUT IT NEVER TURNED OFF UNLESS WE SHUT IT OFF AT THE SWITCH. NOW I SWITCHED THE TSTAT TO HEAT AND THE INDUCER FAN TURNS ON WITH THE BLOWER BUT NOTHING EKSE TURNS ON. NO...


be sure the fan setting on the stat is set for auto, not on. in this mode the fan should only run when there is a call for cool or heat.if the fan continues to run check at the control board to see if you are getting 24 volts low voltage between green and common. if you are then the stat is bad. if youaren't then your electric control board is possibly bad. a lot of gas furnaces fall into a failsafe mode when a sensor or function fails and the blowers stay on 24 7. you may well have several problems from what you are saying. if you turn everthing off and start a new cycle for heat the first thing that should fire up is the induced draft motor , then the ignotor, then the gas valve. you can check each item with a meter , generally 120 volts to the induced draft motor, then 120 volts to the ignitior, the 24 volts to the gas valve. then ignition and 120 volts to the motor. most furnaces have a heat terminal and a cool terminal on the board. common to heat should get 120 volts on a call for heat after the sequence of operationb has taken place. 120 volts should be sent to cool terminal on a call for cool. a continueous blower is a sign of a failed safety. perhaps the motor failed and the safety opened and the motor was replaced but the safety never reset?. look at all the little micro temp sensors around the burner. they are like little breakers and need to be pushed in to reset . usually like a little stem that pops out from a metal or plastic dic. some are size of a quarter, some the size of a dime.

Oct 29, 2008 | Heating & Cooling

2 Answers

Janitrol/Goodman GMP075-3 Draft Inducer Fan Won't come on


most forced draft fans are powered by 120 volts . close to the fan is usually a plug that unsnaps. create a call for heat after turning off to clear safetys and see if your getting 120 to fan on initial call for heat. if you are then fan draft motor is bad, usually sold as an entire assembly replace exact as it came out. sequence of operation is..... stat calls for heat via common and white wire to furnace , 24 volts. ......board sences call and sends 120 volts to forced draft ........ motor runs and creates pressure on proofing switch,....... switch closes 24 to board and tells it draft fan is on......... board then energizes ignitor,....... after ignitior glows gas valve is opened and burner lights ........ either ignitor or seperate sensor rod tells board the burner lit........ and a few minutes later the fan comes on and hot air is blown out. if a step is missed or doesn't proof the furnace either trys up to three times to light or locks out. turning off power usually resets safetys and it will resume attempts to lite normally.

Oct 25, 2008 | Heating & Cooling

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

1,339 people viewed this question

Ask a Question

Usually answered in minutes!

Top Carrier Heating & Cooling Experts

Dan Webster
Dan Webster

Level 3 Expert

8220 Answers

Donni Steen

Level 3 Expert

659 Answers

Bill Long

Level 3 Expert

587 Answers

Are you a Carrier Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...