Question about Carrier 52CQ-312-4 Comfort Series Heat Pump Air Conditioner

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Furnace won't stop running

Amana furnace won't stop running, won't heat and alternate heat pump won't turn on.

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  • Expert
  • 148 Answers

Jump out limit switch blower should stop and inducer should come on then the heating sequences should start from there

Posted on Nov 29, 2013

4 Suggested Answers

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Posted on Jan 02, 2017

wbwill
  • 68 Answers

SOURCE: Furnace Went Out! HELP PLEASE!!!!

The door closed or open should have no effect. The draft motor runs, no power to the glow plug or it is open,

The first place to look is at the furnace brain, a box located somewhere in the unit connecting to the gas valve, look at this brain [controller] and there should be a light of series of lights.

On the box itself there should be a matrix of codes such as: green light flashing= bad glow plug, or red, bad controller box, do you have anything like this?

Most have some sort of led light that narrows down the problem.

If not at least do these things:

make sure the power is off, and that the blower motor spins by hand freely.

next if you have a volt ohm meter, you can test the plug to see if there is a circuit, if the glow plug is open, that is one problem,

If you have a volt meter you can measure the leads at the plug to see if voltage is there or not.

There are so many checks and switches that will operate dependent on the operation of something else.

Unplug the furnace and keep the power off the brain, if so equipped for several minutes, see if it resets.

If it does great, if not tell me if there is a brain box and what the lights are, and what the matrix of light codes say, and we can go from there.

You can also measure for voltage from the thermostat to the furnace and make sure it is getting a signal on all wires, a thermostat wire could have come loose.

very difficult to troubleshoot a furnace when one is in front of it, let along without seeing it.

If you find no box, let me know, and let me know from these checks above if anything changes, or gives you more info to pass on to me.

Step at a time we can find this, a volt ohm meter will be really helpful.

Will

Posted on Nov 22, 2008

vanni7
  • 163 Answers

SOURCE: 3 amp fuse blows on a carrier 58mcb furnace board

Hi!!! Does your ac unit work fine?If not check your low voltage problem..You have a low voltage problem check the wire going out to your condensor make sure that they are not touching..Good luck..Check low voltage wires..short in progress..

Posted on Jan 04, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: Carrier Gas Furnace runs fine randomly stops blowing LEDs flash

That blinking light may be the diagnostic light. Count the blinks next time it fails. Carrier units will have two different blinks depicting the error code such as one blink followed by a pause than 3 blinks giving you an error code of 13. Then look at the wiring diagram, it will have an error code chart telling you where to start with your diagnosis. You already know that if you remove the cover it erases the error code, so look thru the small window first.

Posted on Dec 01, 2009

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Heat pump and gas furnace running at the same time.


An explanation....

When in the heating mode, all heat pumps are dependent upon the outdoor conditions to remove heat energy from the environment and turn it into useful heat for your dwelling.

Heat pumps operate more effectively in temperate climates (as in southern states) and if it's as cold as you say, then the furnace is coming on to add auxiliary heat to the space to make up for the lack of heat being supplied by the heat pump. This is normal.

Some heat pump systems are or can be equipped with a control known as a "low ambient cut out" and/or "motor master" that prevents the heat pump compressor from operating and slows or stops the condensing unit fan when it's too cold and risking potential compressor damage. When it's in the single digits outside, a heat pump is only marginally effective. and usually requires auxiliary heat (your furnace).

If the furnace keeps operating when it's in the 30s or 40s, you may want to have the system examined by a competent service technician. As always, the outdoor condensing unit should be kept clean and the furnace filter should be changed no less than monthly, unless you have an electronic air filter.

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Furnace blower won't stop running


Usually when the furnace blower motor runs all the time
The limit switch or rollout switch is usually open or bad.
The furnace board is seeing that one of those switches is open, so it brings the blower on to try to get the heat out of the combustion chamber area, so the switch will close. But if the switch is bad and won’t close, the furnace board will keep the blower running continuously.

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Hello, my amana heating and cooling will not turn. the outside(a-c unit) will turn on for a couple of minutes than shuts down. upstairs, the furnace will not turn. can you help?


Please give the model number, is the furnace gas or electric, and is the system a heat pump (which that can be determined by the model number.)?

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