Error Codes
● Unit's Malfunction Codes
No.
Malfunction
Name
Display
Code
Unit's
Condition
Possible Causes
Display
Window
1
Ambient
T
emperature
Sensor
Malfunction
F1
Compressor
and fan
motor stop.
This button
is invalid.
● Ambient temperature sensor is
loosen or is poorly connected
w
it
h
t
h
e ter
m
inal of display
b
oard.
● Some element of display board
may have been put upside down
and cause short circuit.
● Ambient temperature sensor is
damaged(Please refer to Chec-
king
T
able for
T
emperature Sen-
sor Resistance).
● Display board is damaged.
2
T
ube
T
emperature
Sensor
Malfunction
F2
●
T
emperature sensor on the
evaporator is loosen or is poorly
connected with the terminal of
display board.
● Some element of display board
may have been put upside down
and cause short circuit.
●
T
emperature sensor on the eva-
porator is damaged(Please refer
to C
h
ecking
T
a
b
le for
T
e
m
perature
Sensor Resistance).
● Display board is damaged.
3
Humidity
Sensor
Malfunction
L1
●
H
u
m
idity sensor is s
h
ort-circuited.
● Humidity sensor is damaged.
● Display board is damaged.
1
7
