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    dbogucki's Avatar
    dbogucki Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jul 26, 2007, 09:58 AM
    Honeywell and Thermostats
    In 1994, new constrction, a Honeywell Trol A Temp Zone Control System was installed with7 day programble Honeywell model T8600 Chronotherm III thermostats. The master thermostat on the lower level was recently replaced with a Honeywell Chronotherm IV model T8624D 2012 and now I need to replace the original upstairs stat which is a slave to master.

    Is there a compatible thermostat available. If so what is the model number?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jul 26, 2007, 06:51 PM
    What is the brand and model number of the thermostat upstairs?
    dbogucki's Avatar
    dbogucki Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Jul 26, 2007, 06:59 PM
    Upstairs stat is Honeywell model T8602 Chronotherm III
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Jul 26, 2007, 08:53 PM
    For all questions concerning this thermostat, please read and follow the instructions. If additional
    Assistance is needed, call Honeywell Customer Assistance toll-free at 1-800-468-1502, Monday
    Here is the reason you need to contact Honeywell.

    T8621D7063 Trol-A-Temp® by Honeywell logo; system switch:
    HEAT-OFF-COOL; O and B terminals.
    None See Trol-A-Temp® representative
    for replacement    .
    T8621D7071 Trol-A-Temp® by Honeywell logo; no system or
    Fan switching.
    None See Trol-A-Temp® representative
    for replacement

    It says there are no replacements available but I believe there is. Call Honeywell.
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