
10 Rinnai Corporation RHFE-263FA
  Care and Maintenance    Filters
Dirty filters reduce the air flow and the appliance’s 
ability to produce heat.  The filters should be cleaned 
frequently during the heating season.  If the filters 
become blocked the filter indicator lamp will flash red.  
Eventually the appliance will turn off and display fault 
code 14 on the control panel display. 
To clean the filters, the 
appliance should be OFF 
and cool.  Remove the 
filter and clean it using a 
soft dry cloth or vacuum.  
If the filter is greasy wash 
with warm soapy water, 
rinse, and dry 
completely.   
Maintenance
Repairs should be performed by a qualified service 
technician.  The appliance should be inspected 
annually by a qualified service technician.  More 
frequent cleaning may be required due to excessive 
lint from carpeting, bedding material, etc.  It is 
imperative that control compartments, burners, and 
circulating air passage ways of the appliance be kept 
clean. 
Any screen or guard removed for servicing the 
appliance must be replaced prior to operating the 
appliance.  Clean as follows: 
1. Turn heat off.  Allow to cool for one hour. 
2. Remove the front panel by removing six screws.   
3. Use pressurized air to remove dust from the main 
    burner, heat exchanger, and fan blades. 
4. Use soft dry cloth to wipe cabinet. 
Do not use wet cloth or spray cleaners on the burner. 
The flue should be inspected annually for blockages 
or damage. 
Motors are permanently lubricated and do not need 
periodic lubrication.  Keep fan and motor free of dust 
and dirt by cleaning annually. 
Verify proper operation after servicing. 
Visual Inspection
of Flame
Check that the burner flames are operating normally.  
The flame can be seen through the circular window 
through the louvers.
When operating normally the burner flame should 
appear as long, clear, blue, stable, streaks.  Yellow 
flames or an orange color is abnormal and 
maintenance is required. 
NORMAL 
ABNORMAL     
Care of Exterior
Dampen soft cloth with warm water.  Wring water out 
well and wipe the unit. 
Do not use volatile substances such as benzene or 
thinners.  They cause fading of the paint and 
deformation of the resin. 
Snow Accumulation
Keep the area around flue terminal free of snow and 
ice.  The appliance will not function properly if the 
intake air or exhaust is impeded by obstructions.   
Flame Rod 
Yellow flames or 
orange color  
Long, clear, blue, 
stable flames 
Flame Rod 
AIR FILTER