What are the correct settings for the NCM-300 running two zones powered by an American Standard Heat Pump with propane auxiliary heat?
As the system stand, it appears the O/B is constantly energized.
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- Sun Oct 05, 2025 12:15 pm
- Forum: Help and Advice
- Topic: NCM-300 Heat Pump with Aux Heat Furnace
- Replies: 1
- Views: 325