Fujitsu AUXG07KVLA Manual page 225

Check point 3. Check the wired remote controller and controller PCB
[Compact cassette and floor types]
Check voltage at CN14 (terminal 1—3, terminal 1—2) of main PCB.
(Power supply to remote controller)
• If it is DC 12 V, the remote controller is failure. (The controller PCB is normal)
-> Replace the remote controller.
• If it is DC 0 V, the controller PCB is failure. (Check the remote controller once
again)
-> Replace the controller PCB.
[Wall mount type for KGTB, KGTE, KMCE, KETA, KETE]
Check voltage at CN300 (terminal 1—2) of main PCB or communication PCB.
(Power supply to remote controller)
• If it is DC 12 V, the remote controller is failure. (The controller PCB is normal)
-> Replace the remote controller.
• If it is DC 0 V, the controller PCB is failure. (Check the remote controller once
again)
-> Replace the controller PCB.
[Wall mount type for KMTB, KMCC]
Check voltage at CNC01 (terminal 1—3) of main PCB or communication PCB.
(Power supply to remote controller)
• If it is DC 13 V, the remote controller is failure. (The controller PCB is normal)
-> Replace the remote controller.
• If it is DC 0 V, the controller PCB is failure. (Check the remote controller once
again)
-> Replace the controller PCB.
[Mini duct and Slim duct types]
Check voltage at CN300 (terminal 1—3, terminal 1—2) of main PCB.
(Power supply to remote controller)
• If it is DC 12 V, the remote controller is failure. (The controller PCB is normal)
-> Replace the remote controller.
• If it is DC 0 V, the controller PCB is failure. (Check the remote controller once
again)
-> Replace the controller PCB.
Check point 4. Replace the main PCB
If check point 1 to 3 do not improve the symptom, replace the main PCB.
3-3. No operation (Power is on)
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End
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3. Troubleshooting without error code