does not want to ignite even if you turn thermo up 90, blower will not turn on auto from thermostat an thermostat is new. However it does turn on at the furnace.
It sounds like the thermostat was installed incorrectly..... There is an industry standard color coding of wires, but unfortunatly this is not always followed. The format is Rh and Rc are a red wire (these terminals may be jumped together if you have gas heat), which is 24v hot, W is a white wire, which is 24v common, Y is a yellow wire, which is power to the outdoor A/C unit, and G is green, which turns on the high speed fan. I must assume that your old thermostat would turn the fan on, since you mentioned it above. Your best bet is to check at the furnace to see which wires go to where
Please Note that if you have oil heat the jumper between Rh and Rc should be removed. Rh is power for the heating circuit (usually red), and is connected to the oil burner primary control. Rc is power for the cooling circuit (usually blue) and is connected to the fan relay. I hope this helps
I have one humidistat honeywell H8908B which presently controlls honeywell humidifiers(HE440A ). I...
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I have one humidistat honeywell H8908B which presently controlls honeywell humidifiers(HE440A ). I am adding the HM512 onto the second furnace and trying to wire into the exisiting 440a. the 440a presently controlls both furnaces and works ok. can i wire and make the HM512 a slave ? and it still has to fill up with water an shut off by itself. i want both to act as one,but having the 440A keep controll of the fans. the service tech added a seperate two pole relay and spiced into to blue wire on the 440 and one side of the humidistat conector. also he set the number 4 dip switch on. this wiring left me with a over heating 512, it was super hotn to touch on the outside of the unit eventhough the main 440A was off.please help
I am getting six blinks on the call for service light after I push the reset button.What does that...
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I am getting six blinks on the call for service light after I push the reset button.What does that mean?
Chronotherm III...Replace Battery notification blinking...replaced twice with the appropriate...
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Chronotherm III...Replace Battery notification blinking...replaced twice with the appropriate batteries, turned the correct way. Cleaned off the battery terminals and still have replace battery notification?
"replace better" msg light came on; I replaced with 3 AAA Alkalines...3 days later, same...
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"replace better" msg light came on; I replaced with 3 AAA Alkalines...3 days later, same message- replaced AAAs again, with what are absolutley fresh ones, same msg. Is there a backup batter somewhere on this unit that needs replaced? The manual does not indicate or show or mention a backup battery...stumped, 'HEP! thx, ed zeppelin the temperature guy