41 🟡 Repair Required

Rinnai Error Code 41: Exhaust Temperature High

⚠️ Your Rinnai heater has detected an unsafe exhaust temperature. Turn off the unit and call a professional for repair.

How to Fix Rinnai Code 41

  1. Step 1: Turn off the heater at the thermostat and the main gas valve.
  2. Step 2: Do not attempt to open the heater or inspect the venting system yourself.
  3. Step 3: Contact a professional Rinnai technician for a safe and thorough inspection.
Type: digital display Display: front panel

What Does Rinnai Error Code 41 Mean?

Error code 41 on your Rinnai heater indicates that the exhaust temperature has exceeded the safe limit. This could be due to a blockage in the venting system, a faulty temperature sensor, or a problem with the heat exchanger. It's crucial to address this issue promptly to prevent potential damage to your heater and ensure safe operation.

Common Causes of Rinnai Code 41

  • Blockage in the venting system
  • Faulty exhaust temperature sensor
  • Problem with the heat exchanger

Applicable Rinnai Models

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Replacement Parts for Rinnai Tankless Water Heater Code 41

Exhaust Temperature Sensor OEM: R200000020
Venting System