Bosch Tankless Water Heater: Read live operation data (OD menu)
Read live operation data (OD menu) on a Bosch tankless water heater: OD shows live readings for troubleshooting: heat exchanger outlet/inlet/outlet NTCs, air pressure, fan speed, water flow, ambient and exhaust NTCs, external tank temperature, barometric pressure and ionization value.
Applies to: Greentherm T9800 SE 160/199 and T9900 SE 160/199 tankless water heaters
How to fix read live operation data (od menu): step by step
- Open P4 Information and select OD Operation Data
- Touch the symbols to scroll through the readings
If the unit shows an error code, look it up: Bosch Tankless Water Heater codes
Models
Bosch Greentherm T9800 SE
Greentherm T9800 SE 160Greentherm T9800 SE 199Greentherm T9800 SEC 199
Bosch Greentherm T9900 SE
Greentherm T9900 i 199Greentherm T9900 SE 160Greentherm T9900 SE 199
Source: Bosch Greentherm T9800 SE 160-199 installation 6720816815 (06.2023), 6.5 Information / Adjustments menu pp.47-48; T9900 SE 160-199 installation 6 720 813 635 (2024-06) same section. 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.