Question about Intertherm Heating & Cooling
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Posted on Jan 02, 2017
Typically if you have a yellow wire in the "y" terminal blue is used as common or "c". As far as your jumper from rc to rh, that will depend upon what type of heat you have. If all of your heat and cooling come from your packaged unit outside, yes you will need the jumper. If this does not work maybe you have a bad breaker or transfomer.
Posted on Oct 14, 2007
Sounds like a downflow electric furnace? If so it sounds like you have 15kw worth of electric heat, you might have a defective heating sequencer, witch is what they call a dual on one plate.
Posted on Nov 28, 2007
SOURCE: intertherm heat pump
FIRST YOUR OUTSIDE UNIT PROVIDES HEAT BY USING A REVERSING VALVE TO CHANGE THE REFRIGERANT FLOW.THERE IS NO HEAT STRIPS OUTSIDE SECOND YOUR EMERGENCY HEAT TURNS ON ELECTRIC ELEMENTS INSIDE YOUR AIRHANDLER UNIT.IT SOUNDS LIKE SOMEONE HAS WIRED YOUR UNIT WRONG OR HAS THE THERMOSTAT SET IMPROPERLY.WHEN THE HEAT PUMP CANNOT SATTISFY THE SETPOINT THE THERMOSTAT IS SUPPOSED TO TURN ON YOUR ELEC. HEAT UNTILL THE LOAD HAS BEEN REACHED AND THE HEAT PUMP CAN CONTINUE TO MAINTAIN IT.
Posted on Nov 29, 2007
O energizes the reversing valve when the thermostat is set for COOL. B energizes the reversing valve when the thermostat is set for HEAT.
The O/B is usually a orange or black wire.
You can't hurt anything if you choose O or B incorrectly. Hook one of them up and run the unit. If set for COOL and the unit runs cool inside it is correct. If set for COOL and the unit runs warm inside it is not correct.
If the inside temp is opposite from your setting change the wire to the other terminal.
Remember to disconnect power from the air handler when changing thermostat wires.
The defrost control board on the outside unit should be marked correctly for O or B.
Your thermostat may have a slide switch rather than a separate terminal.
Posted on Oct 30, 2009
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