Th5220d1003 Not Working - Honeywell TH5220D
Th5220d1003 Not Working
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Honeywell Th5220d1003 Digital Thermostat Does Not Work
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The backlight does not work when it plugged in to the base on the wall, but if I remove it from the ...
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I replace twomercury switch thermostats, upstairs and downstairs, with new Honeywell TH5110D thermos...
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