Error Codes
The Rinnai water heater has the ability to check its own operation continuously. If a fault occurs, an error code will flash on the display of the temperature controller. This assists with diagnosing the fault and may enable you to overcome a problem without a service call. Please identify the code displayed when inquiring about service.
Code | Fault | Remedy |
02 | No burner operation during | Service Call |
| freeze protection mode |
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03 | Power interruption during | Turn off all hot water taps. Press ON/OFF twice. |
| Bath Fill (Water will not flow |
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| when power returns). |
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10 | Air Supply or Exhaust | Ensure Rinnai approved venting materials are being used. |
| Blockage | Check that nothing is blocking the flue inlet or exhaust. |
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| Check all vent components for proper connections. |
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| Ensure vent length is within limits. |
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| Ensure condensation collar was installed correctly. |
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| Verify dip switches are set properly. |
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| Check fan for blockage. |
11 | No Ignition | Check that the gas is turned on at the water heater, gas meter, or cylinder. |
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| Ensure gas type and pressure is correct. |
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| Ensure gas line, meter, and/or regulator is sized properly. |
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| Bleed all air from gas lines. |
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| Verify dip switches are set properly. |
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| Ensure appliance is properly grounded. |
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| Disconnect EZConnect™ or MSA controls to isolate the problem. |
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| Ensure igniter is operational. |
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| Check igniter wiring harness for damage. |
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| Check gas solenoid valves for open or short circuits. |
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| Remove burner cover and ensure all burners are properly seated. |
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| Remove burner plate and inspect burner surface for condensation or debris. |
12 | Flame Failure | Check that the gas is turned on at the water heater and gas meter. Check for |
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| obstructions in the flue outlet. |
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| Ensure gas line, meter, and/or regulator is sized properly. |
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| Ensure gas type and pressure is correct. |
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| Bleed all air from gas lines. |
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| Ensure proper Rinnai venting material was installed. |
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| Ensure condensation collar was installed properly. |
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| Ensure vent length is within limits. |
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| Verify dip switches are set properly. |
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| Ensure appliance is properly grounded. |
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| Disconnect keypad. |
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| Disconnect EZConnect™ or MSA controls to isolate the problem. |
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| Check power supply for loose connections. |
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| Check power supply for proper voltage and voltage drops. |
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| Ensure flame rod wire is connected. |
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| Check flame rod for carbon |
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| Disconnect and reconnect all wiring harnesses on unit and PC board. |
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| Check for DC shorts at components. |
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| Check gas solenoid valves for open or short circuits. |
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| Remove burner plate and inspect burner surface for condensation or debris. |
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| Check the ground wire for the PC board. |
12 | VB Series Outdoor LS Manual |