Toyotomi MUL FWCA-SL Series Service Manual page 27

9.2 Flow Chart of Troubleshooting
Full Water Protection
Y
Check if water overflow
Y
Check if the water drainage
works
Y
Check if the water drainage pipe is
jammed or if water flows smoothly
Y
Clear the water drainage pipe
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N
Check if the voltage of liquid level
switch end is ok
N
pump Check if the voltage of water
drainage pump end is ok
N
Adjust the water
drainage pipe
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N
Replace the main board
of the indoor uint
Y
Check the liquid level
switch
N
Replace the main board of
the indoor uint
Y Check the cables of
water drainge pump
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