Rinnai RHFE-431FA User Manual
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CAUTION:
● If you continue to use the heater with the filter indicator lamp flashing, the sensor may detect trouble
and turn the unit off automatically.
● When the unit is turned off automatically, the room temperature display lamp "68" and the
"operation/combustion" lamp flashes, indicating that the safety device has been activated. (See
page 30) In this event, clean the air filter immediately.