Service Manual: MSDW16012 - 7 -
PCB cannot drive the heater, water cannot be
heat.
Pad the tank and check sprayer
for any leak on it.
Floater switch is broken or PCB is faulty.
Replace the float switch or the
PCB.
Wire terminal connected to the temperature
sensor is loosening.
Wire terminal connected to the temperature
sensor is short circuited or open circuited.
Reconnect the wire terminal or
replace the sensor.
Wiring damage or alternate valve failure
Check connections or replace
valve.
Sensor/button pressed for more than 30 s.
Check if there’s water on the
control panel.