●Troubleshooting
97
7
Troubleshooting
Troubleshooting
5
Troubleshooting
Diagnosis Countermeasures
1
Applicable Models
AKZ**A (All series)
2
Methods of Malfunction Detection
Detect with the inlet oil
thermistor (Th-4)
3
Malfunction Decision Conditions
Class Conditions
10
The inlet oil temperature
exceeds 65℃ for a period
of consecutive 10 seconds.
4
Supposed Causes
1
Faulty inlet oil thermistor (Th-4)
1Improper operation mode
1Defective oil piping
1Faulty control board (A1P)
Control panel display
FE
Malfunction due to High Oil Temperature
(Rise in Oil Temperature)
Replace the inlet oil
thermistor (Th-4).
(See page 130/146)
NO
Are the inlet oil
thermistor characteristics normal?
"Check 1"
(See page 116)
YES
Operate the unit while
in any mode other than
No. 9.
YES
The unit
operates while in
operation mode
No. 9.
Rectify the part
(e.g., open the valve).
YES
There is a
closed part in the oil
piping system.
NO
NO
Reduce the pressure
loss.
(Contact the customer.)
Replace the control
board (A1P).
(See page 122/137)
NO
Is the outside
pressure loss 0.5 MPa
or less?
YES
00_PB00540A_M10.indb 97 2023/08/09 12:59:06
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