TOSOT DC INVERTER U-MATCH AIR CONDITIONERS
80
E9 Full Water Protection
E9 protection
If the unit is
installed with
water pump
No
Yes
Replace the water pump
Short circuit the full water
protection interface on indoor
mainboard according to the circuit
diagram
Check if the
water pump
works normally
No
Replace the full water switch
or make sure the float of full
water switch works normally
Yes
F0 Malfunction of Indoor Ambient Temperature Sensor
Malfunction of
indoor ambient
temperature
sensor
Check if the
indoor ambient temperature
sensor on mainboard is inserted
on the needle
stand correctly
Disconnect
the temperature sensor and
measure if its resistance is
normal
Correctly insert the
temperature sensor
on the needle stand
Replace the
temperature sensor
Replace the indoor
mainboard
Yes
No
No
Yes
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