Daikin 10 - Page 101

98
7
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 60℃ for a period
of consecutive 60 seconds.
4
Supposed Causes
1 Faulty inlet oil thermistor (Th-4)
1Improper model selection
1Dirty air filter
1Improper operation mode
1Defective oil piping
1Faulty control board (A1P)
1Refrigerant shortage
Control panel display
FH
Rise in Oil Inlet Temperature
NO
YES
Is there
temperature differential
of 3 to 5℃. between the oil inlet and the
oil outlet in operation at
100% load?
Are the inlet oil
thermistor characteristics normal?
"Check 1"
(See page 116)
NO
NO
YES
Piping
pressure loss
on the main machine side
exceeds 0.5
MPa.
Replace the inlet oil
thermistor (Th-4).
(See page 130/146)
Replace the control
board (A1P).
(See page 122/137)
Remove the obstacle.
YES
YES
Clean the air filter.
After repairing the leak,
refill the refrigerant.
Ask selection of oil
cooling unit model.
Rectify the oil piping.
NO
YES
NO
There
is an obstacle
on the front and top surfaces
of the Oil Cooling
Unit.
NO
YES
The air filter gets
clogged.
Is the refrigerant
leaking?
NO
YES
The
unit operates
while in operation
mode No. 9.
Operate the unit while in
any mode other than No. 9.
00_PB00540A_M10.indb 98 2023/08/09 12:59:06