Question about Heating & Cooling
Temperature rises beyond setting. I usually have to switch to air conditioning/ summer to stop process and cool office. Sometimes (today) fan doesn't stop and temperature is up to 87 degrees. If I get the fan to stop and the temperature cools, I set it at night to 65 degrees with fan on auto. When I get to my office in the morning it may be 80 degrees with the fan non-responsive.
Thanks in advance for any advice.
My ac has worked fine recently, but then today it has started to act weird. The house was at 78 degrees and when the ac turned on it went to 80 degrees. What is the problem?
Posted on Sep 01, 2009
It sounds like the thermostat is wired improperly. One quick was to check is by finding breaker to unit and shutting off power. Go to thermostat and remove from wall take all wires off thermostat besides wire going to R(might be RcandRh) and C(which is common) Tape all bare wires removed with electrical tape. Now go back to the breaker and turn power back on. Nothing should be running at all. Take a voltage meter and measure the voltage from R to W(which is heating). If you read 24V then the thermostat is open and not calling for heat. Now turn the thermostat up so it is calling for heat. You should read 0V from R to W. If this checks out your thermostat is probally fine. You can check the fan the same way by going from R to G. In auto you shoul read 24V from R to G and in th on postion you will read 0V from R to G. If the thermostat checks out then the problem is probably at the furnace or rooftop. Either with the thermostat wiring or the main board acting up
Posted on Jan 22, 2009
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Posted on Jan 02, 2017
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