Directory
Water Heater
Water Heater fault-code records grouped by brand and product, with source links and safe-use boundaries.
This category currently contains 18 published or scheduled source-linked records across 18 brands. Use the category to narrow the equipment type, then confirm the brand, product family, exact model and controller on the detail record.
Brand coverage
| Brand | Records |
|---|---|
| Noritz | 18 |
Product scope represented
- Tankless Water Heater
Before using a code meaning
- A matching number is not enough when a different brand or controller uses the same characters.
- Read the public source and check that it covers the machine label.
- Follow only owner-safe actions supported by the exact manual.
- Escalate repeated alarms, uncertain operating status and hazardous-system work.
Read the source policy and safety framework for the site-wide rules.
Noritz Code 11: Ignition failure
0 published records
Noritz Code 12: Flame loss
0 published records
Noritz Code 14: Significant heat-exchanger overheat
0 published records
Noritz Code 16: Outlet water temperature has spiked abnormally high
0 published records
Noritz Code 20: High-limit switch has been triggered
0 published records
Noritz Code 29: Condensate drain problem
0 published records
Noritz Code 45: NRCP/CB model abnormality identified by Noritz as Error Code 45
0 published records
Noritz Code 67: AGM air-gas mixer abnormality
0 published records
Noritz Code 71: Gas valve circuit abnormality
0 published records
Noritz Code 73: Circuit-board setting issue
0 published records
Noritz Code 760: Remote-controller transmission abnormality
0 published records
Noritz Code 90: Combustion abnormality
0 published records
Noritz Code 903: Combustion abnormality similar to Error Code 90
0 published records
Noritz Code 91: Incorrect gas type
0 published records
Noritz Code 92: Neutralizer life-cycle warning
0 published records
Noritz Code 93: Neutralizer life cycle has reached replacement condition
0 published records
Noritz Code 94: Exhaust temperature abnormality
0 published records
Noritz Code C1: Scale build-up abnormality on premix models
0 published records