Fujitsu AS G07LUCA Series Service Instruction page 107

Trouble shooting 48
INDOOR UNIT Error Method:
Communication Error
("Trou. 45" and "Trou. 47" are simultaneous Error)
Detective Actuators:
Wireless LAN router
Wireless LAN adapter PCB
Indoor unit Controller PCB
Forecast of Cause:
1. Connection cable failure of Wireless LAN router,
3. Connection between A/C and Wireless LAN adapter failure
4. Connection between Wireless LAN adapter and Wireless LAN router failure
5. Wireless LAN adapter PCB failure,
Check Point 1 : Check the connection cable
Check the connection cable on the Wireless LAN router.
>If there is loose connector, open cable or miswiring, correct it.
OK
Check Point 2 : Check the connection status and transmission state
Check the connection status to the Internet and Wireless LAN router.
>If the Wireless LAN Router is not connected to the Internet,
Please check the transmission between
"Wi-Fi products of other than Air conditioner" and "Wireless LAN router".
> When there is no problem with Wi-Fi products
Check the Wireless transmission state of Wireless LAN router.(LED status)
>If the wireless transmission from the Wireless LAN Router has not been outgoing,
Please the inquiry to "Wireless LAN router maker".
Did the display pattern will change?
Wireless LAN adapter : LED 1 (Green) : Flashing Fast , LED 2 (Orange) :ON
YES
To NEXT PAGE
Indicate of Display:
Indoor Unit :
Operation lamp: 1 time Flash
Timer lamp
ERROR CODE : [ 18 ]
Detective details:
When the "External Communication Error" and "Network Communication Error"
has occurred at the same time.
6. Controller PCB failure
>> Refer to "Check Point 4".
Check Point 3-1 : Turn on power again of Air conditioner
If Check Point 1,2 do not improve the symptom,
of the Air conditioner,please wait 60 seconds.
turn on power again
> When the flashing pattern of the LED 2(Orange) is "ON" >> Refer to "Check Point 3-2".
> When the flashing pattern of the LED 2(Orange) is "Flashing Fast" >> Refer to "Check Point 4".
: 8 time Flash
Controller PCB
2. Wireless LAN router failure
Ex. ) Wi-Fi products
NO
02-62
Wireless LAN adapter :
LED 1 (Green) : Flashing Fast
LED 2 (Orange) : Flashing Fast
NG NG
or NG or
PC
GAME