Installation and Operation Manual

WARNING
Figure 75
72 Rinnai Tankless Water Heater Installation and Operation Manual
5.6 Diagnostic Codes
To display diagnostic codes:
󰀨󰀨
󰀨 (Up)




󰀨
then the 
󰀨



03
Power interruption during bath ll
(Water will not ow when power returns)
• 󰀨

05
By-Pass Flow Control
• 

• 
10
Air Supply or Exhaust Blockage/
Condensate Trap is Full
• 
• 


• 

• 



• 

• 

• 

11
No Ignition (Heater Not Turning On)
• 

• 

• 

• 
• 

• 
• 
• 

• 
• 
12
No Flame
• 

• 

• 
• 

• 
14
Heat Exchanger Overheat
• 

• 


• 



• 


