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Installed new honeywell stat and outside unit will not start
Came home last night and the totaline stat screen was blank. The house was still cool, so it seems everything was working until the stat died.
The system is a duel fuel heat pump. Installed a honeywell rth7500D. Blower works, both heating systems come on but neither the compressor nor compressor fan come on outside. Any ideas? Bill |
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