Fault Tree; Maintenance Non-Heating Malfunction - Midea l712wmb16 Service Manual

3.TROUBLESHOOTING

3.4 Fault tree

1.

Maintenance non-heating malfunction

Whether NTC is short
or open circuit
Change
Non-heating
Y
Whether to set up
non-heating
N
Whether the pressure
switch is well or not
Y
N
Whether the connect
is well
Y
Whether the heater
is well
Y
the control panel
Y
Choosing new heating
temperature
Y
Change NTC
N
Reliable connection
N
Change the heater
P.12