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Tracy BennettSep 4, 2025
What to do if my Navien NHB-110 is showing error E777?
- RRyan MatthewsSep 4, 2025
If your Navien Boiler displays error code E777, which indicates an abnormal LWCO limit (external device), try an auto reset.
To Next PageTo Next PageWhat to do if my Navien NHB-110 is showing error E777?
If your Navien Boiler displays error code E777, which indicates an abnormal LWCO limit (external device), try an auto reset.
What does error E205 mean on my Navien Boiler?
If your Navien Boiler displays error code E205, which indicates an abnormal heating supply thermistor, try an auto reset.
What to do if my Navien Boiler shows error E046?
If your Navien Boiler displays error code E046, which indicates an abnormal heat exchanger overheating sensor, try an auto reset.
What does error E353 mean on my Navien NHB-110?
If your Navien Boiler displays error code E353, which indicates an abnormal water pressure sensor operation, try an auto reset.
Why is the space heating not working on my Navien Boiler?
If the space heating isn't working on your Navien Boiler, first ensure the temperature setting isn't too low. Then, check that the boiler has power and isn't in standby mode by verifying it's plugged into an outlet with the correct voltage and that the power is on. Also, the heating side won't function while the unit is heating domestic hot water (DHW).
What should I do if my Navien NHB-110 Boiler displays error E302?
If your Navien Boiler displays error code E302, which indicates low water pressure, try a manual reset.
What to do if my Navien Boiler is showing error E047?
If your Navien Boiler displays error code E047, which indicates an abnormal exhaust thermostat, try an auto reset, a manual reset, or a power on reset.
What should I do if my Navien NHB-110 Boiler displays error E291?
If your Navien Boiler displays error code E291, which indicates a supply/return inversion limit, try a manual reset or a power on reset.
What does error E004 mean on my Navien NHB-110 Boiler?
If your Navien Boiler displays error code E004, which indicates false flame detection, try an auto reset.
What to do if Navien NHB-110 shows error E109?
If your Navien Boiler displays error code E109, which indicates an abnormal fan motor operation, try a manual reset or a power on reset.
General| Category | Boiler |
|---|---|
| Brand | Navien |
| Model | NHB-110 |
| Maximum Input | 110, 000 BTU/h |
| Efficiency | 95% AFUE |
| Weight | 75 lbs |
| Vent Type | Direct Vent |
| Fuel Type | Natural Gas or Propane |
| Heat Exchanger Material | Stainless Steel |
| Water Connection Size | 3/4 inch |
| Gas Connection Size | 3/4 inch |
| Vent Material | PVC, CPVC, Polypropylene |
| Vent Size | 2 inch |
Explains DANGER, WARNING, and CAUTION symbols and their implications.
Details actions to take if a gas leak is detected.
Factors to consider for optimal boiler placement and compliance.
Step-by-step guide for securely attaching the boiler to a wall.
Instructions for proper space heating system setup and fluid requirements.
Procedures for draining and disposing of boiler condensate safely.
Explains how to safely connect electrical components to the boiler.
Procedure for checking the gas supply pressure for proper operation.
Instructions for proper and safe electrical hookup, including grounding.
How to set desired supply and return water temperatures for heating and DHW.
Step-by-step guide for converting the boiler fuel type.
