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HONEYWELL RTH8500: 2 messages

HONEYWELL RTH8500 Not heating up to scheduled temp It goes about 5 degrees or so lower than the scheduled 70. Had furnace tech out 3x and doesn't know- replaced board, cleaned relays, still doing it. I have to turn the switch off and on for it to work over... Forum: diplofix.com - From: Trmalo - Date: 2009-01-05 07:21:07

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programing rth8500 my new rth8500 will only program monday to thusday cannot program fri/sat/sunday could you give me any help or should i return it to where i got it to exchange it t/x ray... Forum: diplofix.com - From: ray - Date: 2008-12-16 15:57:56