Fujitsu AS*G09KXCA Series Service Instruction page 66

Trouble shooting 29
INDOOR UNIT Error Method:
Communication Error
("Trou.26" and "Trou.28" 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. Network connection between Wireless LAN adapter and Wireless LAN router failure
5. Wireless LAN adapter PCB failure,
Check Point 1-1 :
Check the position of wireless LAN router
Please make sure that the wireless LAN router locates to
the place in the limitation for the wireless communication,
If the distance between the LAN adapter and the router
was out of specification, change the position of the router.
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 ruter".
> 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
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Indicate of Display:
Indoor Unit :
Operation Indicator : 1 time Flash
Timer indicator
Economy indicator: Continuous Flash
Error code: [ E: 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
Check Point 1-2 : 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
Ex. ) Wi-Fi products
NO
02-33
Wireless LAN adapter :
LED 1 (Green) : Flashing Fast
LED 2 (Orange) : Flashing Fast
NG
NG NG
or
PC
GAME