Description Of Display Unit - Fujitsu ARC90LHTA Service Instruction

1-26. DESCRIPTION OF DISPLAY UNIT

1-26-1 Field setting switches
Remove the front panel of the outdoor unit and the cover of the electrical component box to access
the print circuit board of the outdoor unit.
Print circuit board switches for various settings and LED displays are shown in the figure.
1-26-2 Normal operation mode
Operation status is displayed in 7 Segment LED Lamp (LED105 and LED104).
Mode
C L
H t
Operation
1-26-3 Error display mode
10.2.1. Method for ascertaining the errors
(1) When an error has occurred, ERROR LED (LED102) will flash rapidly, and as shown in the figure below,
7 Segment LED will alternately display "Err" and number of errors.
Error display
LED105
(2) Error contents will display if ENTER button (SW109) is pressed in the state of (1).
For error contents, refer to the list of error code described later.
LED105
AMP Air Conditioning
Outdoor unit printed circuit board
CODE DESCRIPTION
Cooling
Heating
d F During defrosting operation
P C During power saving operation
L n During low noise operation
Stopped
LED104
Alternate display
LED104
Ex.) "E.0C" is displayed.
Discharge temperature
thermistor error.
POWER/MODE Lamp (LED101)
It lights up when power on.
MODE/EXIT button
(SW107)
MODE
/EXIT
SW107 SW108 SW109 SW102
SELECT button (SW108)
ENTER button (SW109)
Display number of errors
LED105 LED104
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01-25
ERROR Lamp (LED102)
It will flash rapidly in case of an error.
POWER
ERROR
MODE
LED101 LED102
(GREEN) (RED)
LED105 LED104
DIP switch (SW101)
PUMP
SELECT ENTER
DOWN
SW101
PUMP DOWN button (SW102)