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Results for “NFB”
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Troubleshooting · NavienNavien NFB-399C E110Abnormal air pressure or exhaust blockage
Troubleshooting · NavienNavien NFB-301C E109Abnormal operation: fan motor
Troubleshooting · NavienNavien NFB-301C E291Return temperature exceeds supply temperature
Troubleshooting · NavienNavien NFB-399C E353Water pressure sensor issue
Troubleshooting · NavienNavien NFB-175H E740Abnormal operation: outdoor temperature sensor
Troubleshooting · NavienNavien NFB-399C E205Heating supply temperature sensor
Troubleshooting · NavienNavien NFB-301C E047Exhaust thermostat or thermistor open/short
Troubleshooting · NavienNavien NFB-200H E110Abnormal air pressure or exhaust blockage
Troubleshooting · NavienNavien NFB-301C E515Abnormal operation: PCB
Troubleshooting · NavienNavien NFB-200H E352High water pressure
Troubleshooting · NavienNavien NFB-175H E615Abnormal operation: input and memory
Troubleshooting · NavienNavien NFB-175H E218Heating return temperature sensor