Rinnai RHFE-1004FA - Manual (Page 37)

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If any of the original wire as supplied with the appliance must be replaced, it must be replaced with a wire of a least a 194
°F
temperature rating and number 18AWG or its equivalent. “CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
”
Verify operation after servicing
MARK
MS
R.TH
TF1
3
F
ER
POV
TR
FR1
3
PARTS NAME MAIN SWITCH THERMISTOR
THERMAL FUSE
FUSE
ELECTRODE
MODULATING SOLENOID VALVE
TRANSFORMER FLAME ROD 1
3
MARK OH.TH
OHS
FM SP
SV1
3
BL PS
PARTS NAME
OVER HEAT THERMISTOR
OVER HEAT SWITCH
CONVECTION FAN MOTOR
SPARKER
MAIN SOLENOID VALVE 1
3
COMBUSTION FAN MOTOR
PRESSURE SENSOR