Daikin FXMQ125NFRV16 Operation Manual page 14

1. Inspection display
2. Unit number in which a malfunction occurs
3. Operation lamp
4. Malfunction code
Measure: Notify your Daikin dealer and report the
malfunction code.
If the system does not properly operate except for
the above mentioned cases and none of the above
mentioned malfunctions is evident, investigate the
system according to the following procedures.
1. If the system does not operate at all;
• Check if there is no power failure.
Wait until power is restored. If power failure occurs
during operation, the system automatically restarts
immediately after the power supply is recovered.
• Check if no fuse has blown or breaker has worked.
Change the fuse or reset the breaker if necessary.
2. If the system goes into fan only operation, but as
soon as it goes into heating or cooling operation,
the system stops;
• Check if air inlet or outlet of outdoor unit or
outdoor-air processing unit is not blocked by
obstacles.
Remove any obstacle and make it well-ventilated.
• Check if the remote controller display shows
" " (time to clean the air filter). (Refer to the
chapter "MAINTENANCE".)
3. The system operates but cooling or heating is
insufficient;
• Check if air inlet or outlet of outdoor or outdoor-air
processing unit is not blocked by obstacles.
Remove any obstacle and make it well-ventilated.
• Check if the air filter is not clogged. (Refer to the
chapter "MAINTENANCE".)