“My RTH9585WF thermostat is working intermittently. Looses power. Any suggestions?”
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Hi Mike, this is not what you should expect. Please check the AC voltage between the R and C wires on the thermostat side. The thermostat requires constant 20-30 V to operate properly. If the voltage is not within that range please contact your HVAC contractor to have them take a look at your HVAC system. For further assistance, you can contact our tech support team at (800) 633-3991 or send us a Private Message to our Honeywell Home Facebook account. - Maria
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