Rinnai FUA-E, Service Manual

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Troubleshooting the Infinity 16i
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 if you have temperature controllers
installed. This assists with diagnosing the fault.
* 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.
Following a power cut the heaters should be restarted in this manner.
Standard system.
Single or multiple water heaters without remote controllers.
The heaters will automatically reset without any user involvement.
Single or multiple water heaters with remote controllers.
The heaters will be required to be switched on using the ON/OFF button on a remote
controller. Ensure that all taps/water outlets are closed and no water is flowing through
heaters.
Hot water system incorporating secondary recirculation pump.
Single or multiple water heaters without remote controllers.
The heater(s) will automatically reset without any user involvement.
Single or multiple water heater(s) with remote controller(s).
To reset the heaters follow the steps.
1. Turn off all hot water taps.
2. Turn off supply to secondary circulating pump or alternatively, if heater and pump
are fed from the same electrical supply, isolate pump flow.
3. Turn on heater at remote control.
4. Select required temperature.
5. Switch on supply to secondary circulating pump or open valve on pump flow.
The heater will now be ready to supply water at the set temperature.
If following the above procedure does not reset the heater switch it on and off at its main
supply, and then go through these steps again.