Daikin 10 - Page 103

100
7
Troubleshooting
5
Troubleshooting
Diagnosis Countermeasures
1
Applicable Models
AKZ90A
AKZ14A–90A-500
2
Methods of Malfunction Detection
Detect with the IPM
temperature or radiation fin
temperature (Th-Fin) on the
inverter board.
3
Malfunction Decision Conditions
Class Conditions
70
When the temperature
detected with the IPM
temperature exceeds any
of the following values.
・ Operating temperature:
114℃ (AKZ14A–43A-500)
71
When the temperature
detected with the fin
temperature exceeds any
of the following values.
・ Operating temperature:
101.4℃ (AKZ90A)
93.8℃ (AKZ56A-500)
87.9℃ (AKZ90A-500)
4
Supposed Causes
1Faulty inverter board (A2P)
1Blocked air inlet and outlet
1Dirty radiator fin
1Ambient temperature too
high
Control panel display
L4
Rise in IPM Temperature or Radiation Fin Temperature
NO
YES
Has the
IPM temperature or
radiation fin temperature reached
the value shown on
the left?
Replace the inverter board
(A2P).
(See page 126/141)
Remove causes of rise in
the temperature.
・Blocked air inlet and
outlet of the unit.
・Dirty radiation fin
・Ambient temperature
too high
While in service monitor mode (refer to page
82), check to be sure the IPM temperature
when an alarm occurs.
00_PB00540A_M10.indb 100 2023/08/09 12:59:07