15.2.4Error 03
control unit error
software error con-
trol unit
replace the control unit. The controller will automatically load the program into the new control unit.
15.2.5Error 04
the controller has detected a pro- gram error
reset the boiler
the boiler automatically indicates this mes- sage if during an error
rectify the prece-
ding error
Installation & Servicing Instructions Rinnai
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