Rinnai REU-1110FFU-E Installation And User Manual page 13

If you experience the following symptoms, please carry out the suggestions below.
If symptoms continue, please contact Rinnai for advice.
Fault
Heater does not attempt
to start at all.
Heater starts then shuts
down immediately.
Heater starts then the
water goes cold.
NOTE: Faults caused by insufficient gas/water supply or gas/water quality and installation
errors are not covered by the manufacturer's warranty.
Installations with circulation pumps.
If you have an installation using a secondary circulation pump this must be switched off so
that there is no flow through the heater when starting or after a power failure.
If the pump is running the unit will not operate: isolate the pump, then start the water heater
before restarting the pump. This is a safety feature.
The pump should also be fitted with a thermostat to prevent the return temperature
reaching the heater set point temperature.
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.
If heater is still not working call your local service agent or Rinnai for assistance.
ERROR MESSAGES
Check the power is on at the heater.
Check the cold water valve supplying the heater is open.
Check the power is on.
Check the gas valve at the heater and at the gas meter is fully open.
Open the hot water tap fully.
Check the power is on.
Open your hot water tap further or try another hot outlet.
13
Remedy