8 | Troubleshooting
User reference guide
29
ATXF50~71A2V1B
Daikin room air conditioner
4P513685-6C – 2019.12
8 Troubleshooting
If one of the following malfunctions occur, take the measures shown below and
contact your dealer.
WARNING
Stop operation and shut off the power if anything unusual occurs (burning smells
etc.).
Leaving the unit running under such circumstances may cause breakage, electric
shock or fire. Contact your dealer.
The system MUST be repaired by a qualified service person.
Malfunction Measure
If a safety device such as a fuse, a breaker or an
earth leakage breaker frequently actuates or the
ON/OFF switch does NOT properly work.
Turn OFF the main power
switch.
If water leaks from the unit. Stop the operation.
The operation switch does NOT work well. Turn OFF the power supply.
If the user interface display indicates the unit
number, the operation lamp flashes and the
malfunction code appears.
Notify your installer and report
the malfunction code.
If the system does NOT operate properly except for the above mentioned cases
and none of the above mentioned malfunctions is evident, investigate the system
according to the following procedures.
Malfunction Measure
If the system does NOT
operate at all.
▪ Check if there is no power failure. Wait until
power is restored. If a power failure occurs during
operation, the system automatically restarts
immediately after power is restored.
▪ Check if no fuse has blown or breaker is activated.
Change the fuse or reset the breaker if necessary.
▪ Check the batteries of the user interface.
The system suddenly stops
operating.
▪ Check if the air inlet or outlet of the outdoor or
indoor unit is NOT blocked by obstacles. Remove
any obstacles and make sure the air can flow
freely.
▪ The air conditioner may stop operating after
sudden large voltage fluctuations to protect the
system. It automatically resumes operation after
about 3minutes.
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