a/c cools great, then heat turns on? - Appliance Repair Forum - Free Service from Appliance Parts Pros

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mbarlow1962		#1 Posted : Tuesday, April 28, 2009 4:33:06 PM(UTC)
Rank: Member Groups: Registered Joined: 4/28/2009(UTC) Posts: 1		rheem unit, gas heat...a/c works great but suddenly heat will turn on..replaced thermostat, no help. called repair out they said to call gas service. Gas service said it was brain...replaced brain...heat works great but warmer weather is here and would like a/c to work without the heat turning on


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icehouse		#2 Posted : Monday, May 4, 2009 1:49:58 AM(UTC)
Rank: Advanced Member Groups: Senior Expert Joined: 9/1/2008(UTC) Posts: 440		Please give model number of the A/C-Heat Unit as well as the thermostat as lately mfg's. are not following the standard coolor code. Red-power Yellow- air conditioning contactor White- heat relay Green- fan relay


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arivera1982		#3 Posted : Wednesday, May 13, 2009 4:54:18 PM(UTC)
Rank: Member Groups: Registered Joined: 5/13/2009(UTC) Posts: 4		this may be an issue with a setting on the differential on your t-stat if you have an auto option on your system selector switch not the fan it may be jumping between heating an cooling try switching it to just cooling or adjust your heat and cool temperture @ least 5 degrees apart. good luck


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icehouse		#4 Posted : Thursday, May 14, 2009 9:43:31 AM(UTC)
Rank: Advanced Member Groups: Senior Expert Joined: 9/1/2008(UTC) Posts: 440		The OFF-AUTO-ON switch is to control the fan. It is a separate switch from OFF-HEAT-COOL. The "anticipators" function is to prevent overshoot of temperature. :)


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