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    sandeesl's Avatar
    sandeesl Posts: 2, Reputation: 1
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    #1

    Jul 15, 2013, 09:59 AM
    How do I open the downstairs AC zone? Went away on vacation and now only upstairs on
    Went away for few days. Returned and now only upstairs AC working. Downstairs thermostat
    (Honeywell) keeps blinking "Cool On", but doesn't come on
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #2

    Jul 15, 2013, 11:34 AM
    Do you have 2 ac units or do you have a zoned system?
    sandeesl's Avatar
    sandeesl Posts: 2, Reputation: 1
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    #3

    Jul 15, 2013, 12:08 PM
    Zoned system with one unit. I went to the circuit breakers and now the thermostat (only on the floor not working) has the word 'recovery' on it, but is still not working. Doesn't seem to need new battery as it is working in that it shows correct date, time, etc.
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #4

    Jul 15, 2013, 12:21 PM
    Did you turn off power to your main control that runs your damper system? This will reset the board and sometime correct the problem. Damper systems can be very hard find what the problem is. If you can not find the problem with the wiring you can open the damper manually
    Joshdta's Avatar
    Joshdta Posts: 2,549, Reputation: 45
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    #5

    Jul 15, 2013, 12:24 PM
    System may take up to 10 minutes to come back on after you cycle the power
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