Staff Answer
Sep 28, 2026 - 07:30 AM
Your thermistor readings look good. If it now only cools to about 40° in both modes, check airflow and heat first. Make sure the vents are clear, the AC heater is fully seated, and on LP the flue and burner are clean. Give it a full 24 hours on AC while level. If it stays weak on both modes, the cooling unit is getting weak. A Valterra A10-2618VP cooling fan can help in the meantime.
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