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Question About Honeywell Thermostat PC8900A1007
I have a honeywell tstat hooked up on a zone syste...

I have a honeywell tstat hooked up on a zone system. It is a pc8900 a 1007. It has a display that is weak. It has nimbers 1234 for wire hook up. If 1 is red power, 2 is white, i guess for heat, 3 green for fan and 4 is yellow for ac. How does the display work without a common wire.

Asked by mike on 01/22/2015 0  Answer

ManualsOnline posted an answer 9 years, 8 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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