Navien Boiler: Check input and output states (Input/Output Status)
Check input and output states (Input/Output Status) on a Navien boiler: Shows whether the control sees or sends a signal: thermostat inputs, pumps, zone valves, HTL, dual venturi, LWCO, air handler and DHW priority.
Applies to: Navien NHB-H condensing boilers: NHB-150H, NHB-110H, NHB-080H, NHB-055H
How to fix check input and output states (input/output status): step by step
- Hold Back and Menu together for 3 seconds.
- Choose 2. Input/Output Status.
- Scroll to the item you want to check.
If the unit shows an error code, look it up: Navien Boiler codes
Models
NHB-055HNHB-080HNHB-110HNHB-150H
Source: Navien NHB-H Installation and Operation Manual, 11.7 Viewing Basic Information p.103-104; 11.13 Advanced Menu p.109-118; 11.10 p.108. 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.