TOSOT DC INVERTER U-MATCH AIR CONDITIONERS
75
No.
Error
code
Malfunction
name
Origin of
malfunction
signal
Control description
9
F1
Malfunction of
evaporator
temperature
sensor
Evaporator
temperature
sensor
If the indoor evaporator temperature sensor is detected of open
circuit or short circuit for 5s successively, evaporator
temperature sensor malfunction will be reported. The unit can
automatically
resume
operation
after
the
malfunction
disappears. If evaporator temperature sensor malfunction
occurs in fan mode, only the error code is displayed and the
indoor unit can work normally.
10
F2
Malfunction of
condenser
temperature
sensor
Condenser
temperature
sensor
If the outdoor condenser temperature sensor is detected of
open circuit or short circuit for 5s successively, condenser
temperature sensor malfunction will be reported. The unit can
automatically
resume
operation
after
the
malfunction
disappears. If condenser temperature sensor malfunction
occurs in fan mode, only the error code is displayed and the
indoor unit can work normally.
11
F3
Malfunction of
outdoor ambient
temperature
sensor
Outdoor
ambient
temperature
sensor
If the outdoor ambient temperature sensor is detected of open
circuit or short circuit for 5s successively, outdoor ambient
temperature sensor malfunction will be reported. The unit can
automatically
resume
operation
after
the
malfunction
disappears. If outdoor ambient temperature sensor malfunction
occurs in fan mode, only the error code is displayed and the
indoor unit can work normally.
12
F4
Malfunction of
discharge
temperature
sensor
Discharge
temperature
sensor
If the outdoor discharge temperature sensor is detected of
open circuit or short circuit for 5s successively after the
compressor has been operating for 3min, outdoor discharge
temperature sensor malfunction will be reported. The unit can
automatically
resume
operation
after
the
malfunction
disappears.
13
F5
Malfunction
wired controller
temperature
sensor
Wired
controller
If the wired controller detects open circuit or short circuit of its
temperature sensor for 5s successively, wired controller
temperature sensor malfunction will be reported.
14
ee
Malfunction of
outdoor drive
memory chip
Outdoor drive
board
If the memory chip of outdoor drive board is broken, the unit
cannot be started. The unit cannot be recovered automatically.
If the malfunction cannot be eliminated after switching off the
unit and then energizing the unit for several times, please
replace the outdoor drive board.
15
H3
Compressor
overload
protection
Compressor
overload
switch
If it is detected within 3s successively that the overload switch
is cut off under ON or standby state, the unit will report
overload protection. If the fault occurs successively 3 times, the
unit cannot be recovered automatically. Switch off the unit or
re-energize the unit after cutting off power to eliminate this
protection.
16
H4
Overload
protection
Evaporator
temperature,
condenser
temperature
If outdoor unit detects that the tube temperature is higher than
protective temp. value, the unit will report overload protection.
The unit will not restart operation until tube temperature is
lower than the protective temp. value and the compressor is
stopped for 3min. If the protection occurs over 6 times, the unit
cannot be recovered automatically. Switch off the unit or
re-energize the unit after cutting off power to eliminate this
protection.
17
H6
Malfunction of
outdoor fan
motor
Outdoor fan
motor
If the outdoor unit does not receive signal from outdoor fan
motor for 30s successively when the fan motor is operating,
outdoor fan motor malfunction will be reported. In this case, the
unit can automatically resume operation after stopping. If the
malfunction occurs 6 times within one hour, the unit cannot be
recovered automatically. Switch off the unit or re -energize the
unit after cutting off power to eliminate this malfunction.
