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Download A.O. Smith BFM 80 User's Manual
Transcript
yes Check voltage present at GATE 12 ECO no Pressure H higher then 300 PA? Ensure connections correct, if yes replace ECO Ensure connections correct, if yes check hose H for leakkage or blockings yes yes Check voltage present at GATE 11 BURNER AUTOMATION no no Measure pressure at hose H at the column Ensure connections correct Pressure L less then 0 PA? no Ensure connections correct, if yes check hose L for leakkage or blockings yes yes Check exhaust system on blockings if the exhaust system is open, replace AIR PROVING SWITCH Check voltage present at GATE 10 BURNER AUTOMATION yes no Check voltage present at GATE 2 BURNER AUTOMATION no Replace BURNER AUTOMATION no Ensure connections correct, if yes replace RESET switch yes Problem solved Does the RESET switch light up? yes RESET the water heater and wait one cycle, advanced Fault Finding 29
