HVACopediaNavien · Boiler
Error History Error history list
What the display is showing
Menu 4. Error History lists the 10 most recent errors, newest at the top. Turn the Command dial to move, press it to see details of an error.
Applies to: NHB-055H, NHB-080H, NHB-110H, NHB-150H
What to do
- Press Menu, choose 4. Error History.
- Select an error and press the dial for details.
- Press Back to return.
Settings for these units
Installation clearances (indoor) · Navien NHB-H
| Side | Minimum clearance |
|---|---|
| Top | 9 in (229 mm) |
| Back | 0.5 in (13 mm) |
| Front | 4 in (100 mm) |
| Sides | 3 in (76 mm) |
| Bottom | 12 in (300 mm) |
| Vent to combustibles | 0 in |
Bracket gives 5/8 in (16 mm) from the wall; studs at 16 in on centre.
Common vent installs: 36 in above the top and 24 in in front are recommended for service.
Models that show this code
4 models in Navien NHB-H
Other codes on the same units
- DHW/Zone1 Pump Status Input/Output Status item 6 - DHW/Zone1 Pump Status
- Dual Venturi Status Input/Output Status item 13 - Dual Venturi Status
- EMS Data EMS Data menu (history counters)
- Elapsed Time After Install EMS Data counter 1
- Exhaust Temp Status Information item 20 - Exhaust Temp
- Fan Current APS Status Information item 19 - Fan Current APS
- Fan Current RPM Status Information item 17 - Fan Current RPM
- Fan Target APS Status Information item 18 - Fan Target APS
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Source: Navien NHB-H Installation and Operation Manual, 11.10, p.108. Summarized in our own words; check the original manual for your model.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.