Error Messages - Rinnai REU-V2520FFU Operation & Installation Manual

The Rinnai Water Heater has the ability to check its own operation continuously. If a fault
occurs, an Error Message will flash on the Digital Dispaly of the Remote 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.
Error Faulty
02 No burner operation during
freeze protection mode
03 Power interruption during
Bath fill (Water will not flow
when power returns).
10 Air Supply or Exhaust
Blockage
11 No Ignition
12 Flame Failure
Rinnai America
E R R O R M E S S A G E S
Failure to remedy faults may result in severe burns, scalds, and/or
death.
Remedy
Service Call
Turn off all hot water taps. Press ON/OFF twice.
Ensure Rinnai approved venting materials are being used.
Check that nothing is blocking the flue inlet or exhaust.
Check all vent components for proper connections.
Ensure vent length is within limits.
Ensure condensation collar was installed correctly.
Verify dip switches are set properly.
Check fan for blockage.
Check that the gas is turned on at the water heater, gas meter, or cylinder.
Ensure gas type and pressure is correct.
Ensure gas line, meter, and/or regulator is sized properly.
Bleed all air from gas lines.
Verify dip switches are set properly.
Ensure appliance is properly grounded.
Disconnect all MSA controls.
Ensure igniter is operational.
Check igniter wiring harness for damage.
Check gas solenoid valves for open or short circuits.
Remove burner cover and ensure all burners are properly seated.
Remove burner plate and inspect burner surface for condensation or debris.
Check that the gas is turned on at the water heater and gas meter. Check for obstructions in the flue
outlet.
Ensure gas line, meter, and/or regulator is sized properly.
Ensure gas type and pressure is correct.
Bleed all air from gas lines.
Ensure proper Rinnai venting material was installed.
Ensure condensation collar was installed properly.
Ensure vent length is within limits.
Verify dip switches are set properly.
Ensure appliance is properly grounded.
Disconnect keypad.
Disconnect all MSA controls if installed.
Check power supply for loose connections.
Check power supply for proper voltage and voltage drops.
Ensure flame rod wire is connected.
Check flame rod for carbon build-up.
Disconnect and re-connect all wiring harnesses on unit and PC board.
Check all components for electrical short.
Check gas solenoid valves for open or short circuits.
Remove burner plate and inspect burner surface for condensation or debris.
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FF Models