52 🟡 Repair Required
Noritz Error Code 52: Exhaust Blockage
⚠️ Your Noritz water heater has detected an exhaust blockage, which could lead to carbon monoxide buildup. Turn off the unit immediately and call a professional.
How to Fix Noritz Code 52
- Step 1: Turn off the power to the water heater at the circuit breaker
- Step 2: Contact a licensed HVAC technician to diagnose and fix the issue
- Step 3: Do not attempt to operate the unit until a professional has resolved the issue
What Does Noritz Error Code 52 Mean?
Error code 52 on your Noritz water heater indicates that the exhaust system is blocked, preventing proper venting. This could be due to a buildup of lint, dust, or other debris. The unit has automatically shut down to ensure safety. Do not attempt to operate the unit until the issue is resolved by a professional.
Common Causes of Noritz Code 52
- Blockage in the exhaust vent due to lint, dust, or other debris
- Faulty draft inducer fan
- Incorrect venting configuration
- Blockage in the combustion chamber
Applicable Noritz Models
Need a Pro to Fix Noritz Code 52?
A licensed HVAC technician can diagnose and fix this issue quickly.
Find a Licensed Tech Near You →Replacement Parts for Noritz Tankless Water Heater Code 52
Exhaust Vent Kit OEM: NOR-EXVKIT
Draft Inducer Fan OEM: NOR-DIFAN