Noritz Error Code 29: Condensate Drain Issue

How to Fix Noritz Code 29

1. Check if the condensate drain line is clear and flowing freely. You can try flushing the line with water to remove any blockages.
2. Ensure the drain line is pitched correctly to allow for proper water flow. The pitch should be about 1/4 inch per foot.
3. If you suspect the condensate pump is faulty, try resetting the water heater. If the issue persists, contact a professional.

How to Reset Noritz Code 29

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 29 Mean?

Error code 29 on your Noritz water heater indicates that the condensate drain line is blocked or not functioning properly. This could be due to a buildup of minerals, debris, or even mold and mildew. When the drain line is blocked, water heater operation may be compromised, leading to potential water damage and system lockout.

Common Causes

• Blockage in the condensate drain line due to mineral buildup or debris
• Kinked or collapsed drain line
• Faulty condensate pump (if equipped)
• Incorrect drain line pitch

Diagnostic Steps

Replacement Parts

Related Codes on Same Models

Other codes that affect the same Noritz model families as 29.