Troubleshooting - Fujitsu Ceiling Type Installation Manual

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Display mode : 0.5s ON / 0.5s OFF
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: 0.1s ON / 0.1s OFF
( ) : Number of fl ashing
Outdoor unit main PCB model
information error or communica-
tion error
Inverter error
Active fi lter error, PFC circuit
error
Trip terminal L error
Display PCB microcomputers
communication error
Discharge temp. sensor error
Compressor temp. sensor error
Outdoor unit Heat Ex. liquid
temp. sensor error
Outdoor temp. sensor error
Suction Gas temp. sensor error
• 2-way valve temp. sensor error
• 3-way valve temp. sensor error
Heat sink temp. sensor error
• Sub-cool Heat Ex. gas inlet
temp. sensor error
• Sub-cool Heat Ex. gas outlet
temp. sensor error
Liquid pipe temp. sensor error
Current sensor error
• Discharge pressure sensor
error
• Suction pressure sensor error
• High pressure switch error
Trip detection
Compressor rotor position detec-
tion error (permanent stop)
Outdoor unit fan motor1 error
Outdoor unit fan motor 2 error
4-way valve error
Coil (expansion valve ) error
Discharge temp. error
Compressor temp. error
High pressure error
Low pressure error
Branch boxes error
[Flexible Multi]

Troubleshooting

[Troubleshooting with the indoor display]
Troubleshooting at the display is possible either on the wired or wireless remote controller.
[Troubleshooting at the remote controller LCD]
This is possible only on the wired remote controller.
[Self-diagnosis]
If an error occurs, the following display will be shown.
("Er" will appear in the set room temperature display.)
R.C. address
OPERATION Lamp (green)
TIMER Lamp (orange)
ECONOMY Lamp (green)
Error code
EX. Self-diagnosis
En-14