rinnai tankless water heater Error Codes
rinnai tankless water heater Error Code List
If you have any concerns about your own or someone else's safety, please stop troubleshooting and call SPS Plumbing immediately.
10
Ignition failure
10: Exhaust or air supply blocked. Check for obstructions in the intake and exhaust vents.
11
Ignition problem
Can be caused by gas supply issues, a faulty flame rod, or improper grounding.
12
Flame failure
The burner failed to ignite or stay lit. Check for gas supply, obstructions in the flue, or a dirty flame rod.
14
Thermal fuse tripped
Check for airflow restrictions in the combustion chamber or heat exchanger.
15
Heat exchanger clog or faulty flame rod
16
Over temperature warning
Usually caused by an airflow restriction. Check for clogs in the exhaust, heat exchanger, or combustion chamber.
25
Condensate pump trap is full or automatic circulation problem
31
Inlet water thermistor issue
32
Outgoing water temperature thermistor fault
38
Exhaust thermistor or CO sensor issue
51, 52
Inlet water temperature thermistor issues
61
Combustion fan motor failure
65
Water flow control fault
70
PC board issue
72, 73
Flame sensing device faults
79
Water detected at the bottom of the unit.
LC, LCO-LC9
Scale buildup in the heat exchanger.
Requires a heat exchanger flush to clean, but can operate temporarily by pressing the On/Off button five times.
rinnai tankless water heater Error Code List
If you have any concerns about your own or someone else's safety, please stop troubleshooting and call SPS Plumbing immediately.
15
High Water Level in Neutralizer
This is an issue with the condensate drain on condensing models. The drain may be blocked.
16
Inlet Thermistor Failure
The cold water thermistor is not functioning correctly.
25
Outlet Thermistor Failure
The hot water thermistor is not functioning correctly.
31
Fan Motor Failure
The fan motor is not working properly.
32
Circuit Board Setting Error
The circuit board has an improper setting.
38
Combustion Abnormality
A general error for an improper air-to-fuel mixture. It can result from insufficient gas pressure or an internal issue with the combustion system.
51, 52
Neutralizer Near End of Life
Indicates the neutralizer needs to be replaced.
61
Combustion Abnormality
Similar to error 90, this points to a problem with air, flame, or exhaust.
65
Multi-System Communication Error
Occurs in multi-system installations, indicating a communication breakdown between units.
Need Help With Troubleshooting?
We've got you covered!
Call now to schedule your appoinment.