Navien Tankless Water Heater: Lock the temperature setting (front panel DIP switch 2)
Lock the temperature setting (front panel DIP switch 2) on a Navien tankless water heater: Front panel DIP switch 2 stops users changing the set temperature.
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 lock the temperature setting (front panel dip switch 2): step by step
- Turn power off before changing DIP switches.
- Switch 2: OFF = temperature can be set, ON = temperature cannot be set.
- Keep it OFF if you want to use Commercial Mode.
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, 3.8 Setting the DIP Switches, p.19, p.61; 8.1 p.112. 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.