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-   -   Intertherm Relay Manual (https://www.askmehelpdesk.com/showthread.php?t=431839)

  • Jan 5, 2010, 03:49 PM
    Harleyguy
    Intertherm Relay Manual
    I have a 28 year old Intertherm heat pump system with a FEH-015HA furnace and a Relay control box 901093.
    I am trying to properly wire a new Honeywell RTH7400D thermostat and am having problems in the heating season. I keep getting AC with the electric furnace. I have been over and over the wires and thermostat settings.
    Any ideas?

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