Question about Haier HC48C1VAR Central Air Conditioner

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Compressure and fan not coming on, contactors pulled in from 24v .light blinks 3 times lps hps are jumped add freon still not working.

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Sounds like your breaker is tripping for your outside unit. Compresser could be grounded out or a breaker problem.

Posted on Oct 08, 2009


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AC-heatpump won't turn on unless I push n hold the contactor switch. I let go,it stops. I have 24v coming in the motherboard from stat, but no 24v coming out to the contactor. Is my motherboard bad?

Sounds like a pressure switch. Have you tested continuity on the switches? If no multi meter put a jumper on HP and LP. (HIGH AND LOW PRESSURE) Turn system back on. If contactor pulls! Do not leave jumpers on, get the freon problem fixed. Hopefully high pressure problem ;) Good Luck!!

Apr 10, 2017 | Heating & Cooling

1 Answer

Repaced fan motor, capacitor, contactor still fan not working.

press the contactor in using a wooden pencil does it come on? if so then you are not getting a control signal from the tstat or a low pressure (low freon switch) is open stopping the contactor from pulling in

May 21, 2013 | Goodman CKL49AR49 Air Conditioner

1 Answer

I have 24 volts but the unit will not come on unless i jump it ouy

Please explain "jump it out". Are you jumping the 220V across the terminals on the unit, or are you jumpering the 24V to the coil of the contactor?

If you have 24V at the contactor, but it does not engage, more than likely you have a bad coil on the contactor. If you have a simple multi-meter, you can do the following to make sure it is the coil:

-Turn power off to the unit. Never work on something live unless you are qualified and know what you are doing.

-Take the 24V wires off their terminals.

-Turn your multimeter to the resistence (ohms) setting.

-Place the leads across the terminals on the contactor that the 24V power was applied to. Look for a reading between 10 ohms and 70ohms. If you do not get a reading (infinity resistence), then the coil has burnt out. If you do get a reading, you may have a sticky coil.

-Odds are that the coil is bad. You maybe able to source just the coil for the contactor, but more than likely you will end up purchasing the entire contactor. I believe you can get them through Home Depot, and I know you can get them through Grainger.

Jun 24, 2012 | Goodman CKL36AR36 Air Conditioner

1 Answer

I have power but fan and compressor not coming on model #rccc30c2c

is the contactor pulled in???? Is there 24v coming from the indoor unit???
The fan may have quit and kicked the high pressure control....
there could be a number of things that cause this...
Check for the 24v signal...then follow through the low voltage circuit on the outdoor unit... and find out if or why the contactor is not working...then figure it out from there...


Sep 17, 2010 | Amana Heating & Cooling

1 Answer

The unit will not start for the summer. It worked last summer.

Open the control box and see if you have around 220-240V at the bottom of the contactor. The contactor is the switch looking thing in the bottom. If the unit is calling for air it should have a button in the middle that is pulled in. If you are not getting the volts at the contactor then you need to find the electrical problem.
If you have the correct voltage then look and see if the contactor is connected. The middle button should be pulled in. If you have one where you are unable to see the button, or it is not pulled in, Check the low voltage wiring. This is done by checking to see if there are 24V-28V on the side terminals of the contatcor. These terminals are located on the sides of the contactor. (some contactors have both sides of the 24V on one side.) Either way you should read 24-28V when checking across the two terminals. If you do not then you have a problem with the control wiring. (cut with weed eater, chewed by mouse etc.) I know the 24V coil is good because the inside unit is running. If the contactor is pulled in and the outdoor unit still does not run check and see if there is power at the other end of the contactor. (The end the switch breaks off)
If the switch is pulled in (or you read 24- 28V on the side of the contactor, and there is 240 V coming in on the line. Chances are you need to replace the contactor. Disconnect the power and pull one wire at a time of of the old contactor and install it on the new. After all of the wires are on the new one, remove the old contactor and throw it away. Screw the new contactor with all of the wires back onto the unit. restore power. Often times in our part of the country, there will be ants stuck in the points of the contactor. Just cleaning the contactor will buy more time.
Hope this helps.

Jul 11, 2010 | Carrier 38CKC024 Air Conditioner

2 Answers

UAMB Air Conditioner: Fan doesn't turn on and how do you test the relay?...

By relay, I am assuming you are talking about the contactor. First, you will need to visually inspect it for scorching or pitting. This is caused by wear and tear and can cause the unit to draw more amps or not make proper contact and only allow a certain percentage of the voltage through it. To check operation, the coil should pull in when 24V is supplied to it. If 24V is being supplied and its not pulling in, you can attempt to manually depress it with a non-conductive item, such as a plastic pen. If the contactor stays pulled in, then you either have less than 24V indicating a mis-wired or failing transformer or you have a weak contactor coil. In which case, the contactor needs to be replaced.

If no voltage is present at coil, then your problems lie elsewhere. Maybe within the thermostat, a float switch, or bad wiring.

The fan should come on when the compressor comes on. If it doesn't, you can attempt to spin it by hand really fast. If the motor begins to run at this point, check the capacitor. Be very careful if attempting this. The motor spins at close to or in excess of 1000 RPMs and if it starts up, you don't want your hand close to it.
If the motor fails to run, again check the capacitor and supply voltage. If both previous check pan out, then the motor is bad and will need to be replaced.

May 16, 2010 | Ruud UAMB Air Conditioner

1 Answer

4 ton rheem 3yrs old thermostat

It is possible that the relay in the thermostat for "cooling" has gone bad. The relay that runs the blower is different than the condenser relay. Check that you have 24v AC coming from the t-stat to the "y" terminal at the air handler. That same "y" wire should go out to the condenser, make sure then that you have 24v out there. If you have 24v at the condenser then see if the contactor is pulling in. If not then you may have a loss of charge switch that is stopping the current to the contactor. See if you have 24v to the coil of the contactor. If the contactor is pulling in and power is going to the compressor then the compressor has failed. If this is the case the condenser fan will be running but the compressor is not. If neither the condenser fan or the compressor is running then you have a problem in the 24v circuit, which could be a bad wire or a safety switch.

As you can see there are a number of possibilities for your problem. You will need to methodically go through everything to eliminate the possiblities till you isolate the problem,

I hope that this will help you to solve your problem and get you cooling again!

Thanks for using Fixya!


Nov 23, 2009 | Air Purifiers

1 Answer

My out side unit will not come on i have checked thermoastate wires capacitor and voltage and freon ,, points are not pulling in its a yr old split air from goodman

You should have 24v ac at the coil to the contactor (points) as you call them. The 24v comes from the indoor unit through the thermostat. If you manually push in the contactor does the unit run. If so, then the problem lies in the low voltage circuit somewhere.
If the indoor blower comes on when you switch the thermostat to fan them you have low vaoltage and the transformer is okay if not then change the transformer or fuse. if you have low voltage then you need to be checking for a broken wire of a bad thermostat on the cooling side. depending on your thermostat a relay can go bad in it the runs the cooling.

Nov 12, 2009 | Goodman CLQ36AR49 Air Conditioner

2 Answers

Unit will not come on at all has voltage to unit and to contactor?

Sounds like you lost the refrigerant charge. Low pressure switch will not let compressor run. Look for oil around the condenser tubes. If you find it, this is probably the leak source.

Jun 01, 2009 | Heating & Cooling

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