Error Messages - Rinnai REU-KM2035FFUD-E Installation And User Manual

Rinnai water heaters have the ability to check their own operation continuously. If a fault
occurs, an error code will flash on the Digital Display (and on the Status Monitor) if you
have temperature controllers installed. This assists with diagnosing the fault, and may
enable you to overcome a problem without a service call. Please quote the code
displayed when enquiring about service.
Code
Displayed
- Noticeable reduction in water flow
Power interruption during operation
03 (water will not flow when power
10 Not enough combustion air
11 No Ignition / Gas supply
12 Flame failure / Earth Leakage
14 High flame safety device
16 Over temperature warning
25 Condensate pipe blockage
Outgoing water temperature sensor
32
33 Heat exchanger outlet sensor faulty
52 Gas modulating valve faulty
61 Combustion fan failure
Water flow control faulty (does not
65
71 Micro-processor failure
72
LC (00)*** Scale build-up in heat exchanger
* In all cases, you may be able to clear the Error code by turning the hot water tap OFF, then ON
again. If this does not clear the error, try pushing the On/Off button OFF then ON again. If the Error
Code still remains contact Rinnai or your nearest service agent for advice.
** Faults caused by insufficient gas/water supply or gas/water quality and installation errors are not
covered by the manufacturer's warranty.
*** The display will alternate between temperature setting and LC code. The controller will continue to
beep. The LC code will reset if power is turned Off and then On.

ERROR MESSAGES

Fault
returned)
faulty
stop flow properly)
Flame rod circuit error
Remedy
Inlet water filter needs to be cleaned.
Turn off all hot water taps and circulating
pumps. Press 'On/Off' twice
Check for physical blockages around air intake
or exhaust. Check combustion fan.
Check gas valves, gas supply and sparker
unit.
Check gas valves and gas supply.
Check flame rod.
Check earth wire lead.
Check remote control.
Service Call
Service Call
Check for blockage on condensate drain path.
Service Call
Service Call
Service Call
Service Call
Service Call
Service Call
Service Call
Service Call
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