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KB Home / Equipment / Mini-Splits / Fujitsu / Fujitsu - Diagnostic/Error Codes

Fujitsu - Diagnostic/Error Codes

Article ID: 507
Last updated: 19 Mar, 2018

Fujitsu Mini-Splits

Re: Diagnostic/Error Codes

If you use a wired type remote control, error codes will appear on the remote control display.

If you use a wireless remote control, the lamp on the photodetector unit will output error codes by way of blinking patterns.

See the lamp blinking patterns and error codes in the table below. An error display is displayed only during operation.

Operation Timer Economy Display Mode Description
1 Blink 1 Blink Off 11 Comm
  • The indoor unit cannot receive the signal from the branch unit
  • The branch unit cannot receive the signal from the indoor unit.
1 Blink 2 Blink Off 12 Comm
  • Wired remote controller communication error
1 Blink 5 Blink Off 15 Comm
  • Scan error
2 Blink 1 Blink Off 21 Setting
  • Wiring error
2 Blink 2 Blink Off 22 Setting
  • Indoor unit capacity error
2 Blink 3 Blink Off 23 Setting
  • Combination error
2 Blink 4 Blink Off 24 Setting
  • Connection unit number error
3 Blink 2 Blink Off 32 Indoor
  • Indoor unit PCB Model information error
3 Blink 5 Blink Off 35 Indoor
  • Manual auto switch error
4 Blink 1 Blink Off 41 Indoor
  • Inlet thermistor error 
4 Blink 2 Blink Off 42 Indoor
  • Indoor unit Heat Ex. Middle thermistor error
5 Blink 1 Blink Off 51 Indoor
  • Main fan motor lock error
  • Main fan motor revolution speed error 
5 Blink 3 Blink Off 53 Indoor
  • Drain pump error
5 Blink 15 Blink Off 5U Indoor
  • Indoor unit error
6 Blink 2 Blink Off 62 Outdoor
  • Outdoor unit PCB Model information error
  • Outdoor unit PCB microcomputer communication error
6 Blink 3 Blink Off 63 Outdoor
  • Inverter error
6 Blink 4 Blink Off 64 Outdoor
  • Voltage error stoppage permanently
  • Voltage error (can restore)
  • Over current protected operation stoppage permanently
  • PFC hardware error
6 Blink 5 Blink Off 65 Outdoor
  • IPM error
  • Trip terminal L error
6 Blink 10 Blink Off 6A Outdoor
  • Display error
  • Microcomputers communication error 

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Article ID: 507
Last updated: 19 Mar, 2018
Revision: 6
Access: Public
Views: 903
Comments: 0
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