Sinclair ASC-18A - Page 117

DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
111
Malfunction display: E9 Full Water Protection
Malfunction of drain
water level
Y
N
Check if water overflows
Check if the water drainage
pump works
N
Y
Y
Y
Check if the water drainage pipe is
jammed or if water flows smoothly
N
Adjust the water
drainage pipe
Clear the water drainage
pipe
Check if the voltage of liquid
level switch end is ok
Replace the main
board of the indoor
uint
N
Y
Check the liquid level
switch
Check if the voltage of water
drainage pump end is ok
Check the cables of
water drainge pump
Replace the main board
of the indoor uint
N
Y
Malfunction display: F0 Failure of Indoor Room Sensor at Return air inlet
Check if the plug of the temperature sensor is
correctly connected with socket on the mainboard
Failure of indoor room
sensor at air intake
N
Remove the sensor to check if the
resistance value is ok
N
Y
Y
Y
Replace mainboard of the
indoor uint
Check the direction of
the plug and socket
Replace temperature
sensor