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Air conditioning always on

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Hi there, My air conditioning is always on, even after I turned control switch for the blower or turn off

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  #1 (permalink)  
Old 06-07-2010, 06:50 PM
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Default Air conditioning always on
Model Number: Comfortmaker RPJ II   Brand: -brand-   Age: 5 - 10 years   

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Hi there,

My air conditioning is always on, even after I turned control switch for the blower or turn off the thermostate. The only way to turn it off is to cut the electricity from circuit breaker.

Any idea?

Thanks,
Ning


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  #2 (permalink)  
Old 06-07-2010, 06:51 PM
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Default Additional info

I have Comfortmaker RPJ II (heating and cooling). Thanks.
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Old 06-07-2010, 07:22 PM
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Quote:
Originally Posted by leafhppr View Post
I have Comfortmaker RPJ II (heating and cooling). Thanks.
Check wiring. Also furnish Model number
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Old 06-08-2010, 05:08 AM
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Thanks for your reply. Please advise which wiring I need to check. The machine worked fine just a few days ago and blower and controller seem all working (automatically turned on/off), except air conditioning never stops. Very strange.
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Old 06-11-2010, 05:25 AM
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Quote:
Originally Posted by leafhppr View Post
Thanks for your reply. Please advise which wiring I need to check. The machine worked fine just a few days ago and blower and controller seem all working (automatically turned on/off), except air conditioning never stops. Very strange.
My unit is doing the same. runs, all the time gotta shut it off by switching off power, lol
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Old 06-11-2010, 07:19 PM
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Disconnect the yellow wire on thermostat and see if A/C stops.
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Old 06-18-2010, 06:34 PM
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Quote:
Originally Posted by northshore View Post
It sounds like the contacts in the fan relay are sticking. For more information visit: Northosre appliance repair
O/P Stated that that the blower (fan) stops,therefore the fan relay is not sticking. Sounds like the compressor contactor is sticking. Removing the yellow (to compressor contactor coil ) will prove this.
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