Troubleshooting - Rinnai Demand Rapid DD1200E315N Owner And Installer Manual

Troubleshooting: Rinnai INFINITY error codes
troubleshooting with controllers or status monitor
Your Rinnai INFINITY has a self diagnostic capability. If a fault occurs, an error code will flash
on the status monitor (HD200 external and EF models) or on the digital controller (if fitted). This
assists with diagnosing the fault and may enable you to overcome a problem without a service call.
Please quote the code displayed when contacting Rinnai.
In some cases you may be able to clear the error code by turning the lower water valve off, wait 20
seconds, then on again.
Error Fault
code
Noticeable reduction in water flow
-
Power interruption, water will not flow
03
when power is back on
Combustion fan current is too high. Unit
10
operates then stops.
No ignition. Unit stops without flame
11
igniting.
Flame failure, earth leakage
12
Thermal fuse and/or OH switch
14
activated. Unit operates then stops.
Over temperature warning. Unit
16
operates then stops.
Condensate trap error
25
Outlet water temperature faulty
32
Heat exchanger outlet sensor faulty
33
Air temperature sensor faulty (internal
34
models only)
Modulating solenoid valve fault. Unit
52
stops without flame ignition.
Combustion fan failure
61
Water flow control error. Water flow is
65
not controlled. Water temperature too
low.
Solenoid valve circuit error. Unit does
71
not operate.
Flame rod circuit error. Unit does not
72
operate.
Scale buildup in heat exchanger—when
LC
checking maintenance code history, 00
is substituted for LC
Possible solution
Inlet water filter needs to be cleaned—service call.
Turn off all hot water taps and press On/Off (on the controller
twice)
Owner: Service call
Installer: Check blockage of air intake/flue outlet, and combustion
fan.
Owner: Check gas is turned on at the water heater, gas meter, or
cylinder.
Installer: Check; gas supply, sparker unit, and gas valves.
Owner: Check gas is turned on at the water heater, gas meter, or
cylinder. Check there are no obstructions to the flue outlet.
Installer: Check; gas supply, flame rod, earth wire lead, and water
control.
Owner: Service call
Installer: Check thermal fuse and OH switch. If either are faulty
check the heater for damage, confirm gas type, pressure settings,
and test point pressures.
Owner: Service call
Installer: Confirm gas type, pressure settings, and test point
pressures. Check; gas valves, water flow sensor and servo, and
HEX outlet temperature thermistor.
Check condensate drain for blockage
Owner: Service call
Installer: Check hot water outlet thermistor
Owner: Service call
Installer: Check HEX thermistor
Service call. Will require; checking sensor wiring for damage,
measuring sensor resistance, checking combustion fan, checking
internal flue leakage, checking flue system integrity, and possibly
replacing the sensor
Owner: Service call
Installer: Check modulating solenoid valve
Owner: Service call. Installer: Check combustion fan.
Owner: Service call.
Installer: Check water flow servo.
Owner: Service call.
Installer: Check gas valves
Owner: Service call.
Installer: Check flame rod
Service call
Demand Rapid owner & installer guide 12949-B 02-19 | 7