Daikin 10 - Page 102

●Troubleshooting
99
7
Troubleshooting
Troubleshooting
5
Troubleshooting
Diagnosis Countermeasures
1
Applicable Models
AKZ**A (All series)
2
Methods of Malfunction Detection
Detect malfunction according
to resistance detected with
thermistor.
3
Malfunction Decision Conditions
Class Conditions
10
When disconnection
or short circuit of the
thermistor is detected.
99
When 150 hours
have passed with the
thermistor disconnected
or short-circuited.
4
Supposed Causes
1Faulty thermistor
1Faulty control board (A1P)
1Faulty thermistor connection
Control panel display
H0,H1,J3,J4
J6,JH,JJ
Malfunction of Thermistors
Properly connect the
connector.
NO
Is the
connection
normal?
(*1)
YES
Replace the thermistor.
(See page
130–131/146–147)
Replace the control
board (A1P).
(See page 122/137)
NO
Is the
resistance
normal?
YES
Check the connector
for connection.
Disconnect the thermistor from
the control board, and measure
the resistance with a tester.
"Check 1" (See page 116)
*1: Alarm code and corresponding thermistor
(a) The alarm code represents “control panel display (service monitor history
display)”.
(b) If it is not used as control, the alarm code will not be displayed.
(c) The alarm code will be displayed 150 hours after the warning code is displayed.
*2: For H1, JH, and JJ, emergency operation (warning display and output) is
enabled by changing to the operation mode without use of faulty thermistor.
For J3, J4, and J6, emergency operation (warning display and output) is
enabled by turning the power on again. Take any measures before alarm is
displayed again and the unit is stopped after cumulative 150 hours of operation.
Corresponding thermistor
Machine body thermistor (b)
Room thermistor (b)
Discharge thermistor (c)
EE valve outlet thermistor (c)
Condenser thermistor (c)
Inlet oil thermistor (b)
Outlet oil thermistor (b)
Optional thermistor
Symbol
Th-1
Th-3
Th-6
Th-8
Th-7
Th-4
Th-2
Th-9
Connector No.
30-31
(X2M terminal block)
CN10
S9
CN11
Alarm code (a)
H0
H1
J3
J4
J6
JH
JJ
00_PB00540A_M10.indb 99 2023/08/09 12:59:07