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pod215
Jan 20, 2009, 05:58 PM
My new RTH7600B when set to heat is cooling. Checked the wiring and settings to no end. What can I do?
wmproop
Jan 20, 2009, 06:26 PM
sounds like you might need to look at wiring again,,,,,,how about the (should be) orange that goes to the reversing valve,,,,this assuming you have a heatpump
dac122
Jan 21, 2009, 09:15 AM
What was the old tstat, how did it energize the reversing valve, and what manufacturer do you have? Does putting it in cooling mode give you any heat?
pod215
Jan 24, 2009, 03:09 PM
Reset setting 190 to other setting and it worked.
dac122
Jan 26, 2009, 06:00 AM
Reset setting 190 to other setting and it worked.

Excellent. Your RTH7600 is now energizing the O/B terminal in accordance with what your HP needs to turn on heating. It always helps to know what your equipment expects before embarking on a change of controlling equipment.