GreenFlow knowledge center
What can we help you find?
Search brands, product models, troubleshooting codes, and AHRI certificates in one place.
Search results
Results for “NFB”
240+ results found.
Troubleshooting · NavienNavien NFB-399C E291Return temperature exceeds supply temperature
Troubleshooting · NavienNavien NFB-301C E127Abnormal operation: air pressure sensor or air volume control
Troubleshooting · NavienNavien NFB-399C E515Abnormal operation: PCB
Troubleshooting · NavienNavien NFB-200H E012Flame loss
Troubleshooting · NavienNavien NFB-301C E001Heat exchanger overheat
Troubleshooting · NavienNavien NFB-301C E774Manual reset limit
Troubleshooting · NavienNavien NFB-175H E302Low water pressure
Troubleshooting · NavienNavien NFB-175H E012Flame loss
Troubleshooting · NavienNavien NFB-200H E031Burner overheat
Troubleshooting · NavienNavien NFB-301C E615Abnormal operation: input and memory
Troubleshooting · NavienNavien NFB-399C E001Heat exchanger overheat
Troubleshooting · NavienNavien NFB-200H E109Abnormal operation: fan motor