Fujitsu KN Series Operation Manual page 14

■ Service check
If [ ] and [ ] blink while [
check the error code. The error code is 2-digit numbers or characters.
1. Press and hold [ ] for more than 5 seconds.
The remote controller will enter to the Service check mode
and " " will be shown.
2. Press
The indoor unit emits 1 short beep each time the error code
changes.
When the corresponding error code is shown, the indoor unit emits
multiple beeps and all the indicator lamps on the indoor unit blink.
The characters used for error code
A
J
To fi nish the Service check mode, press
The remote controller will return to the original display.
Tell the error code to authorized service personnel when consulting them.
If the indoor unit emits multiple beeps at "00", no error is detected.
] is blinking fast on the indoor unit,
to change the shown error code.
(Max. 2 min/cycle)
C
P
.
F
U
En-14