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Brivis Fault Code 36

Brivis Error Code 36 Bad Supply Air Thermistor Location: The temperature registered by the supply-air did not reach the modulation set point temperature defined by installer setting number 6 within the main fan override time defined by factory parameter number 8.

For Heater Repair Tech Only

Reason: BAdSA_THM means, the supply air thermistor has a circuit, but has not reached 30oC. Within 2 minutes of the fan operation commencing, in a normal heating cycle. Operation Mode: The user still has some heating, until the problem can be rectified by a service technician, though the operation does not give the maximum or best performance. In BAdSA_THM fan operation, the unit cannot rely on the thermistor signal, and therefore operates the heater as follows: Fan operates at installer set speed, and the gas valve operates at minimum rate. The fan ON time = 45 seconds from when the gas valve is energised at the start of the heating cycle. The fan OFF time = 60 seconds from when the gas valve closes at the end of the heating cycle. Service Check List: • Check the Supply Air Thermistor is installed in the Supply Air duct • Check the thermistor is not faulty, check that the resistance is approx 10 kΩ @ 20oC. • Check the Supply Air Thermistor is not located in an unsuitable position within the Supply Air duct.