Question about Intertherm Heating & Cooling
Installed in my shop is a Intertherm E3EB012H electric furnace. It is wired correctly (to power at least) and I used a multi-stant "thermostat wire" to connect a Nordyne digital therrmostat (dont have the model # with me at work).
When double pull 60 amp breaker(s) are turned on, the furnace comes alive with a low blower speed and heats the coils (this is with the thermostat turned off). When the thermostat is turned on, the blower speed kicks up and it cools the coils down (obviously due to increased air flow).
The furnace will not shut off by any control of the thermostat and the temp setting will make no change in blower speed. I have checked and rechecked the thermostat wiring and it appears correct (red/ white green/ grey).
Red= power........White=heat.............Green=fan.................(grey)-(yellow)=cool .....these are the connectons. Disconnect these wires from the thermostat and know that red/power is the only wire that send power to the thermostat, and the rest sends it back to the unit to call for whatever,, red--to . white for heat... red to green for fan .... &red to grey for cool! OK! Turn all your power on, and use a jumper wire from red / green for fan and see if the fan comes on! Then move the jumper wire from red to green , to red / to white for heat and the fan , wait for 3 minutes before removing and going to the next step. Then red /to grey for cool and check if the outside comes on. Either you have a wire touching past the insulations and making a connection, a bad thermostat ,oe excessive wire lead touching the next connection.Thank you very much!
Posted on Nov 05, 2008
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Posted on Jan 02, 2017
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