Noritz Error Code 14: Thermal Fuse Failure

How to Fix Noritz Code 14

1. Step 1: Check if your water heater is still under warranty. If so, contact Noritz for support.
2. Step 2: Turn off the power to your water heater at the circuit breaker to prevent any further issues.
3. Step 3: Call a licensed HVAC technician to diagnose and repair the issue. Do not attempt to replace the thermal fuse yourself.

How to Reset Noritz Code 14

1. Turn off the unit using the power button on the front panel.
2. Turn off the gas supply valve.
3. Turn off the circuit breaker supplying power to the unit. Wait 30 seconds.
4. Restore power at the breaker, then open the gas valve.
5. Turn the unit back on. If the error returns, the underlying issue needs repair.

Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.

What Does Noritz Error Code 14 Mean?

The Noritz 14 error code indicates a failure of the thermal fuse in your water heater. The thermal fuse is a safety device that trips when the temperature exceeds a certain level, preventing overheating. When it fails, it stops the heating process, and your water heater won't produce hot water. This issue is common in Noritz water heaters due to their high-quality construction and safety features.

Common Causes

• The thermal fuse has reached its maximum temperature and tripped
• The fuse may have been damaged due to a power surge or voltage fluctuation
• The temperature sensor may be faulty, causing the fuse to trip prematurely

Diagnostic Steps

Replacement Parts

Related Codes on Same Models

Other codes that affect the same Noritz model families as 14.