Technical Articles

FAQ - What is a 16 error code?

The 16 error code occurs when the outlet water temperature spikes to an abnormally high value.  The heater will restrict its water flow as an additional precaution.  The error code is reset by unplugging the heater, waiting 20 seconds, and plugging it back in.

Common causes for the 16 error code are:


For assistance with this error code, please contact Noritz Technical Services at 866-766-7489 option 1 for commercial customers and option 2 for residential customers.

Applicable Models
  • Models: ALL MODELS
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