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HVAC issues - A/C blows semi-cold air and Heater won't turn on

I live in a Condo and the HVAC system made by First company is located in the ceiling in the guest bathroom. If I set the thermostat to Fan, it will blow air. When I set it to A/C / Auto, it will turn on but it doesn't blow cold air. When I set it to Heat, the thermostat clicks but it will not turn on even at the highest termp. The HVAC system is about 3 yrs old or less.
Any help is greatly appreciated!!!

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Hi! there,
there are possible cause in the circuit is the thermostat,since thermostat switch is like a switch of light,when this turn on blower and compressor turn on,if you turn on and no cold your thermostat
is defective.replace thermostat,if run but insufficient cold was feel check the operating current,there is a rated current you can compare it can tell if your freon charged is under charged,this should be done by certified service technician from your service center,have inform from your manual the telephone no. and location have it call.if still under warranty claim it have a nice day.

Posted on May 15, 2009

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