Having problems with your Air Conditioners ?

Heat pump cycling on and off.

\015 Exterior heat pump, Carrier Mdl 38YCC036340, cycles on and off when thermostat set on heat and fan on auto with ambient interior temp at 65 deg and thermostat set at 72 deg. Emergency heat function working properly. In Emer Heat function, heats house to desired temp and keeps it there. I have turned the heat pump off and am relying entirely on the emergency heat function to heat the house. What can I do to test the heat pump and or the thermostat? Thanks\015

Answers :

It sounds as if you you have a low charge of refrigerant, r22. When the unit comes on outside, the outdoor coils become the lowside, there is a low pressure switch that is tripping out contactor protecting the compressor.

Repair Help & Product Troubleshooting for Air Conditioners
You need a second opinion or clarification ? ask it in the comment box OR you can Ask Your Own Question

Tips for a great answer:

  • Please provide as much detail as possible as this will allow our members to better understand and respond to your Comment
  • If you need clarification, ask it in the comment box
  • It's 100% free, no registration required

Suggested Questions/Answers :

It is recommended you read all this kind of situations

This is a heating and cooling through the wall heat pump. It works normally when heating is selected - the heat pump runs and both speeds of the fan blow warm air. But nothing runs when cooling is selected. In other words the unit works normally when "High Heat" or "Low Heat" is selected but nothing runs when "High Cool", "Low Cool" or "Fan Only" is selected. The position of the Fan Cycle Switch has no effect - behavior of the unit is the same in both positions of the Fan Cycle Switch.

You have a bad board or bad switch. I would say board. You can have service tech check this out. There is only so far you can go without knowledge of Controls ad electricity. Russ ... Air Conditioners

R22 freon Waht does Heat pump uses more freone on heating cycle or cooling cycle? If on cooling cycle whay? and if on heating cycle Whay? Thank you! Abe

It uses the exact same amount of freon on both cycles...it just inverts a vale which changes the condenser to an evaporator int eh winter for heat and changes the condenser back to a condenser for AC in the summer. However it does so with the same am ... Air Conditioners

I have a Lennox model CB19-51-1P air handling unit with HP19-511-1P compressor heat pump unit. I just turned the heat on for the first time this season. And I am getting low heat volume. The heat pump unit is running for long periods. I am getting enough heat to maintain the 70 degrees setting with constant cycles, shutting off for short periods, running long periods. When the thermostat is turned to a cooler temperature, the unit shuts off as it should. Could you please help trouble shoot po

First thing you need to check is if the reversing valve is working you maybe running your A/C with the heat strips on depends on the t-stat your using some heat pumps will bring the strips on with a high d ... Air Conditioners

Installed new LG 18000 btu mini split heat pump, started it in heating mode, the unit first appears to run fine but continues to cycle in and off without reaching temp. have already changed indoor board and thermister per LG tech support request, but unit still cycles without satisfing.

A heat pump is a finely tuned machine that can be very efficient yet very frustrating at times. I could give you better advice if I were looking at the unit but hear are some things that may help. The unit has a defrost mode that cycles every 30,60,o ... Air Conditioners

I have a 18000btu LG mini split heat pump installed about 1 year ago in vacation home. In heat mode the unit cycles on and off when room temp is within 2-3 degrees of set point. Cycle on time varies between 35 to 60 seconds (sometimes more). The off time is 2-3 minutes. During this time, I check inside temp with accurate digital themometer mounted at the air intake of the unit and the temp does not change, assume because unit does not run long enough. When I put temp set point more than 3 d

Hello.I think they are on to something with shortcycling on temp sensor.I think it should be sampling the return air instead of (inside coils ?).A 2*f dead band use to be built in (factory installed) to thermostats to prevent on/off, but ... LG LS-L1210CL Mini Split Air Conditioner

Heat pump cycling on and off.

It sounds as if you you have a low charge of refrigerant, r22. When the unit comes on outside, the outdoor coils become the lowside, there is a low pressure switch that is tripping out contactor protecting the compressor. ... Air Conditioners

Heat Pump Cycles On and Off and Air Handler Noisy

I am pretty sure you have a low charge and the pressure switch is kicking it off. probably just a pound or two however the accumulater will sometimes hold more. ... Bryant 463AAC008BA Air Conditioner

I have a goodman gsh130361 3 ton heat & air. It was installed 05/05/2008. all seemed well until cold weather, in 2009. The fan turns on and start blowing before the heat box is even warm. The heat set on 70----- when it gets 68 or 69 {in the house} the out side pump kicks in, 10 to 20 seconds later the fan turns on and blows freezing air into the house. the temperture will drop dramatically for the next 1 & 1/2 minute. The box will heat up and then all is well untill the next cycle.

The PCB unit that controls the thermostat and Coolant is malfunctioning... check that particular unit...that would help.... ... Goodman Air Conditioners

I have a new home that is near to completion. Two heat pumps (zoned) are installed and both are now running - house is completely closed and is comfortably warm. Only the downstairs pump is being used at the present. The upstairs thermostat is turned off. The downstairs pump cycles every 26 seconds, that is, on for 26 and off for 26. This never changes. The ext temp is about 56 and the thermostat is set to 68. The pumps are both contractor grade Carrier 13SEER, 2 ton units, and the total

Its not normal.It indicates problem with the thermostat.The thermostat is just not accurate enough, and is likely falling below the set-point and causing the system to run the minimum 26 seconds when the\015\012 timer expires. This ... Air Conditioners

My Heil HHP236AKC3 heat pump won't cycle on AC

... Air Conditioners

Hi there my fujitsu reverse cycle heat pump has started playing up over the last six months. the air con works fine but when turned on for heat it blows very gently withou much heat. is there anything i can do to rectify this problem? thanks jethro model AOT24LMADL seriel T020993

... Air Conditioners

Heil heat pump makes a knocking noise (see video) switched Hunter programmable thermostat from auto (heat or AC as needed) to heat. Knocking stopped but unit runs aprox 10 mins stops running for around 5 seconds and then starts right back up for another 10 or so minutes and continues this cycle.

... Air Conditioners

I have a Coleman Mach heat pump that the fan operates as well as the heating setting. I can hear the compressor start and run on the heat cycle, but when I turn on the A/C setting the fuse blows immediatly. Thoughts?

Sounds like the start capacitor may be shorted, taking out the fuse when it tries to start the ac compressor, but it seems good on the heat setting, so not sure if there is a difference in current draw when a/c is turned on, but possibly so. In ad ... Air Conditioners

Defrost Cycle Problems with Heat Pump

It's a defrost board issue. The timer on the board or something similar is hanging up. Unfortunately the solution is to replace the board. By lowering the temp. on the T-stat you are resetting the timer on the board. As you see that only works until ... Weather King 12AJA4801AH Air Conditioner

Defrost Cycle Problems with Heat Pump

... Weather King 10AJA4201AH Air Conditioner

RUUD 14 seer heat pump makes loud squeeking noise after cycling.

Your problem is the TXV. I just had person with the same problem. Replace TXV no problem Rusty ... Ruud UAMB Air Conditioner

Amana AHQ186 heat pump not putting out hot air on heat cycle

... Amana Air Conditioners

Bryant heat pump with aux.heat,no blower,outside unit cycles for approx 3 min then shuts down and will repeat cycle in 3-4 min.at no time will blower come on,tried setting fan to manual but no blower.

Chances are you have a bad capacitor or a bad fan motor, maybe a bad thermostat or thermostat connection. Your best bet without knowing what your doing would be to replace the capacitor( it is the part attached to the fan, bottom door, two wires com ... Air Conditioners

FAZ08 window heat pump cycles very! frequently during cooling cycle

Check your room sensor misplaced or fell down. Place it in the middle of evaporator coil. Helpful. ... Frigidaire Air Conditioners

After installing a condenings (heat pumps)unit & thermostat. Intertherm inside unit. The outside unit is cycling heat only. This job is to restore service. Someone stole the orin. A. C. unit.

Actually what is ur problem??can u be clear with the problem? ... Intertherm Air Conditioners

I just had a ssz160361a heat pump installed 3 weeks ago. It heats perfectly but has an irratic defrost cycle. it is set for 60 minutes, but may defrost anytime. what is the problem

Call the person who installed it, there could be another control on this that will energize the defrost, or call Goodman tech support they should give you the sequence of operation ... Goodman Air Conditioners

I have a rheem electric furnace with 2 speed fan, seems like the fan runs full bore when its on, even when i just cycle the blower control to ''on'' and its supposed to run at reduced speed. I have to experience with central heating and air, was wondering if it would be the circuit card with the dip switches. Unit was installed in 2003 with a heat pump.

If it is a variable speed blower most likely the dip switch settings. Check the installation manual to see how to slow it down. ... Air Conditioners

Compressor relay keeps cycling on and odfdf on my Rheem Heat Pump

It is possible if it gets noisier as it gets hotter outside that the condenser coil is dirty or there is a problem with the fan.To get some idea if this is so you could feel the smaller of the two lines going to the indoor coil.The ... Air Conditioners

Reverse cycle heat pump leaking inside

The condensation line is clogged.It can be cleaned from outside with a wet/dry vacuum (shop vac)\015\012\015\012Please rate this Fixya ... Air Conditioners

Defrost Cycle Problems with Weatherking Heat Pump Model 10PJA4201

Look for your diagram on the back of the door panel ... Air Conditioners

A detailed question is important to get you a relevant answers

  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
all rights reserved to the respective owners || www.ad-trader.net || Terms of Use || Contact || Privacy Policy
Load time: 0.0482 seconds