Navien Tankless Water Heater: Open the service / installer menu (Menu + Back)
Open the service / installer menu (Menu + Back) on a Navien tankless water heater: Hidden menu that holds the installer menu, cascade setup, test mode and special operations.
Applies to: Navien NPE-A2 (built-in recirculation) and NPE-S2 condensing tankless water heaters: NPE-150S2, NPE-180A2/S2, NPE-210A2/S2, NPE-240A2/S2
How to fix open the service / installer menu (menu + back): step by step
- Hold Menu and Back together for 3 seconds.
- Choose Installer Menu, Cascade Status and Set, Test Mode or Special Operations with OK.
- Press Back to leave.
If the unit shows an error code, look it up: Navien Tankless Water Heater codes
Models
NPE-150S2NPE-180A2NPE-180S2NPE-210A2NPE-210S2NPE-240A2NPE-240S2
Source: Navien NPE-A2/S2 Installation Manual, 7.4.2 p.95-96; 7.5 p.98-99, p.105-107. 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.