Troubleshooting; Customer Contacts - Rinnai MC-503RC Installation And Operation Manual

Troubleshooting

The Rinnai continuous flow water heaters have a self diagnostic capability. If a fault occurs, an
error code will flash on the digital monitor of your water controllers.
Error Code Fault
'Out of Range' due to distance from
transceiver or an obstruction.
- Noticeable reduction in water flow.
03 Power interruption during bath fill (water
will not flow when switching the power
back on).
0 air intake or flue blocked.
 No ignition/no gas supply.
12 Flame failure/low gas flow
14 Remaining flame safety device.
16 Over temperature warning.
32 Outgoing water temperature sensor
faulty.
33 Heat exchanger outlet sensor faulty.
34 Combustion air temperature sensor faulty. Service call.
52 Gas modulating valve faulty.
61 Combustion fan failure.
65 Water flow control faulty (does not stop
flow properly).
71 Micro-processor fault.
72 Micro-processor fault.
LC* Scale build-up inside heat exchanger.
In all cases, you may be able to clear the error code by turning the hot water tap off and then
on again. If this does not clear the error, try pushing the controller off then on again. If the
error code still remains, contact Rinnai for advice.
Faults caused by insufficient gas/water supply, gas quality, water quality, installation errors or
operation errors are not covered by the Rinnai warranty.
No power display
When power to the water heater is disconnected, the LCD of all wireless controllers
will display as shown. Check that power is available, the water heater is plugged in
and power is turned on.
Rinnai New Zealand
Consumers: 0800 RINNaI (746 624)
Installers: 0800 TO RINNaI (86 746 624)
Address: 105 Pavilion Drive, airport Oaks, Mangere, Manukau
PO Box 53177, auckland airport, Manukau 2150
Phone: (09) 257 3800
Fax: (09) 257 3899
Email: info@rinnai.co.nz
Websites: www.rinnai.co.nz and www.rinnai-tradesmart.co.nz
16
Remedy
Move controller, transceiver or obstruction.
Inlet water filter needs to be cleaned - service call.
Turn off all hot water taps. Press On/Off twice.
Service call.
Check gas is turned on at water heater and gas meter/
cylinder.
Check gas is turned on at water heater and gas meter/
cylinder. Check there are no obstructions to the flue outlet.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call.
Service call. (* only available for Rinnai HD models)
Wireless Installation and Operation: C 03-09