Question about Honeywell Programmable Thermostat Heater

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Permanent hold message on thermostat

Installed Honeywell thermostat RTH7500 Series, the words "permanent hold" appear on lower right corner of display.... any ideas or solutions please???

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Press run program.... from there, set the schedule for maximum efficiency. permanent hold only shows up after the hold button has been pressed 2-3 times. If this does not fix the issue, there is a master reset button on the thermostat that will set all settings back to factory default.

Posted on May 17, 2009

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