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Carrier model 48tjf016-670ya second compressor not coming on. contactor pulls in briefly then kicks out. is it the lockout device controlling the lps/hps?

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SOURCE: compressure and fan not coming on, contactors

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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Carrier model 38tdb air conditioning unit kicks out the 40 amp breaker. Also moisture under compressor unit outside. What is problem?


What breaker? The breaker for the condenser? Likely have a compressor shorted to ground or drawing locked rotor amps. Easiest way to tell is make sure breaker off, unhook compressor wires from contactor. Turn on breaker and turn on machine. If the breaker does not trip, obviously problem with compressor

Jul 14, 2016 | Carrier Heating & Cooling

1 Answer

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


Hi,
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...
So...
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...

heatman101

Sep 17, 2010 | Amana Heating & Cooling

1 Answer

Turned unit on for first time, it will not kick on


does the indoor fan blow? If it does you are getting the 24 volts from the thermostat to the ouside contactor need to check your contactor in the oustide unit this is what kicks on the compressor it take the 24 volts and goes to 230 volts to run the compressor and condensor fan. check your schematic for the placement of the contactor.

Jun 04, 2010 | Carrier 38CKC030 Air Conditioner

1 Answer

Carrier A/C making buzzer noise every 6 minutes.


Probably the contactor, they have a coil that sometimes buzzes, after the contacts become pitted and no loger pull together like they are supposed to. It could also be a voltage problem from the transformer that is causing it, but I would bet on the contactor. Get it fixed quickly as a voltage drop across the contactor can be the demise of you compressor!

Jul 13, 2009 | Heating & Cooling

2 Answers

Compressor not kicking in when i turn the air conditioning on.


what is the make and model? how long has it been switched on? is the compressor top hot?

Jun 23, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

Goodman CK36-18: Outside fan kicks on, but


Sounds like a bad capacitor. They can be bad and the fan will still run. Turn off power and check for burnt wires on the top of the contactor going to the capacitor or on the top of the capacitor.. Check terminals on the compressor also. When capacitors go bad they are slightly swollen. They can also look good and be bad . Could be compressor but start with capacitir and wires. IWork on a lot goodman units. Most of the time it is the cap.

Jun 03, 2009 | Heating & Cooling

1 Answer

I have a carrier infinity system. On the thermostat it reads "sens error" where the outdoor temp is normally displayed. The inside unit is running but the outside unit is not. Any suggestions?


A burned or pitted contactor will/can cause a unit to not run. Outside fan. Just thinking out loud. Start with low voltage check at t.stat then check outside low volt. Set t.stat to on. If fan engages at least your transformer is good. Next set calling for cool. Drop t.stat 68-70. If nothing happens go outside and with a screwdriver depress the contactor in. If fan and compressor kicks in change the contactor. If contactor is pulled in check outside fan. Remove the wires from the compressor and see if the fan will run . If it does you have eliminated start components as good. The compressor has to be check. It needs to be ohmed out. Turn off power at disconnect. Pull the cover on the compressor. Check between pins; then pins to ground. Open or infinite is good.Have you checked fuses. Like small 3-5 amp fuses

Jul 03, 2008 | Carrier Heating & Cooling

1 Answer

Compressor on central unit wont kick on


you need to use a meter to ensure that you are getting control voltage from the xfrmr. Also check it at the coil side of the contactor if you feel comfortable doing this but be careful of the line voltage side. If you are getting power on the coil side of the contactor usually a 24v signal from the tstat from the area labeled y and the contactor is not pulling in most likely you will need to replace the contactor. If the contactor is pulling in verify the amp draw on the compressor with the tag.

Apr 28, 2008 | Whirlwind FH-778 Air Conditioner

1 Answer

Ruud heat pump outside unit trips circuit breaker


Check your wiring between the contactor and compressor for a short to ground, or check the compressor windings for short to ground.
With the Tstat off, the contactor should be open so the only way for the compressor to be trying to do anything is if the 110 volts from the unbroken side are traveling through the compressor to ground. Since 110v is not enough to run it, the overload is kicking it out, cooling off, and repeating the cycle. When you kick on the Tstat, the contactor is supplying voltage directly to ground without going through the resistence of the compressor windings and kicking the breaker.
Post back and let me know what you find.

Nov 20, 2007 | Ruud Central System Air Conditioner

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