Hoshizaki DCM-271BAH Service Manual page 30

1. Power Supply
2. Control Board
3. Water Dispense Switch
4. Water Dispense Valve
1. Power Supply
2. Control Board
3. OS Sensor (infrared)
4. Water Dispense Valve
Water Dispense-Push Button
a) Off, blown fuse, or tripped breaker.
a) No power from control board to water dispense switch (5VDC) or
not reading signal.
b) No power to dispense water valve (24VAC).
a) Defective.
a) Water supply turned off.
b) Defective.
Water Dispense-Opti-Serve
a) Off, blown fuse, or tripped breaker.
a) No power from control board to OS sensor (5VDC) or not reading
signal.
b) No power to water dispense valve (24VAC).
a) Defective.
a) Water supply turned off.
b) Defective.
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