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I have installed my Honeywell RTH2310 thermostat from an older mercury one properly and it seems to work fine. However, I am unable to get it to operate at the set temperatures. I set the programming to 27.5 degrees Celsius throughout the day (7 days a week) but to 20.0 Celsius from 8pm till 8am. The thermostat continues to operate at 19.5-20.5 Celsius no matter what I try. I even tried to change it temporarily and permanently as per the user manual but to no avail. Please help, Vincent

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Hello Vinny Fear not the thermostat has a built in (factory) deadband of 1 or 2 degrees on purpose to keep the unit from shortcycling.It needs to maintain a minimun run time for the equipment's sake.This is normal and can't be adjusted.

Posted on Sep 17, 2010

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