Question about Honeywell Heating & Cooling
This is why battery powered tstats are misleading. The battery provides the power to the tstat but your unit is not providing low voltage in order to run. Air conditioners are controlled by relays and contactors. This means your unit constantly has high voltage going to it but each component runs through a relay in order to turn on. These relays are energized by the low voltage that runs through your tstat. Your tstat is not getting this low voltage. Either your float switch on your drain line is tripped, your blade style fuse is blown on the secondary side of the transformer or your transformer is bad.
Posted on Aug 09, 2017
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Posted on Jan 02, 2017
The Mitsubishi units have to be reset by turning off the indoor units by switching the remote or thermostat to off. Then turn off the breaker to the outside unit(s). After 30 seconds,turn on the breaker and then you can turn on the remote for cool. If no lights come on on the inside units, most likely you have blown a fuse soldered on the main PC board. At this point, call your technician. A goos tech will be able to wire in an in-line fuse holder so if it should happen again, you can easily replace the fuse. If you do see a light or two come on at the indoor unit but the outdoor unit does not start after 3 or 4 minutes, sounds like you will need to call a technician. Most likely you have a blown fuse on the main PC board of the outside unit. It is not an easy one to replace. Good Luck!
Posted on Sep 04, 2007
SOURCE: how to change the battery
The battery is inside the thermostat. There should be screws / or / it will just pry off the mounting base (not the wall). There are usually rechargable batteries inside.
Posted on Apr 28, 2008
Whats the amp breaker? Is this for the inside unit or the outside condenser? If the inside and gas heat you have a bad fan motor, If its an electric furnace , the same, but if its the outside unit, the fan could be going bad, locking up and the compressor still runs and pulls high ampsand tripps breaker or the compressor is just pulling too many amps due to plugged coils with dirt , grass or weeds blocking airflow.(firstname.lastname@example.org)
Posted on Jun 09, 2008
Is your condensing unit located in a well ventilated area and have an ample space, atleast a foot, from the rooftop flooring? Just make a check that free flowing outside air properly ventilates the condensing unit specially on high ambient temperatures. Hope this would solve your problem
Posted on Sep 16, 2008
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