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Today's Hours 8am - 11pm estwhat does the fp code mean? no heat is coming out.
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According to the Service Manual Document, Code FP means the Freeze Protection is engaged. The room temperature measured by the wireless remote thermostat or indoor ambient thermistor active sensor falls below 40-deg F. No action is required. This setting will disengage when the room temperature rises above 430 deg F. If you have any further questions please feel free to give us a call! Thanks.