Navien Combi Boiler: Change installer parameters (password 1234)
Change installer parameters (password 1234) on a Navien combi boiler: Installer parameters sit behind a password in the service menu.
Applies to: NCB-250/150H, NCB-240/130H, NCB-240/110H, NCB-190/080H, NCB-190/060H
How to fix change installer parameters (password 1234): step by step
- Hold Back + Menu for 3 seconds and open 3. Parameter Settings.
- Enter password 1234.
- Edit the value; it saves after 10 seconds with no input.
If the unit shows an error code, look it up: Navien Combi Boiler codes
Models
NCB-190/060HNCB-190/080HNCB-240/110HNCB-240/130HNCB-250/150H
Source: Navien NCB-H Installation & Operation Manual, 11.6.3 Setting the Operation Parameters, p.121-124. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.