Rinnai Water Heater REU-V2520FFUD - Manual (Page 21)

Always turn off the electrical power supply, the manual gas valve and
the manual water control valve whenever servicing the unit.
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Rinnai America FF Models
M A I N T E N A N C E & S E R V I C E I N F O R M A T I O N
The Rinnai Water Heater should be checked by a Properly Trained
Technician once a year. A Properly Trained Rinnai Technician
should perform any repairs that may be necessary.
The following items should be checked each inspection:
1) The area around the Rinnai unit should be free from combustible materials
such as cloth, vegetation and building materials. (see page 8)
2) Check burners for presence of foreign debris, insects or bugs. These items
are not covered by the unit’s warranty.
3) Remove and clean the inlet water filter.
4) Keep the appliance area clear and free from combustible materials, gasoline,
and other flammable vapors and liquids.
5) Do not obstruct flow of combustion and ventilation air.
In the case of any fault or error message from the Rinnai Water Heater,
first turn all hot water taps off. Wait for 5 seconds. Turn the hot water tap back
on. If the error message still remains, call your Rinnai Authorized Service
Representative or Rinnai at 800-621-9419.
Should overheating occur or the gas supply fail to shutoff, turn off the manual
gas control valve to the appliance.
DO NOT ATTEMPT TO SERVICE YOUR Rinnai YOURSELF.
Call a Rinnai Authorized Service Technician or call your installer.