Hi. I have a 153-7758 model upstairs and a 1f80-361 downstairs. The downstairs thermostat works fine. The upstairs thermostat consistently drops below the setting once the downstairs thermostat is turned down. Yet it is pretty consistent to the setting when the downstairs thermostat is set higher. any thoughts?

Asked by Sean on 12/11/2013 0  Answer

ManualsOnline posted an answer 10 years, 3 months ago

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