Daikin 10 - Page 91

88
7
Troubleshooting
5
Troubleshooting
Diagnosis Countermeasures
YES
Open the valve or rectify
the clogged part.
Correct the wiring.
Replace the heater
(E1H).
Replace the control
board (A1P).
(See page 122/137)
NO
YES
YES
Check whether or not any
valve in the oil piping system
is stopped or clogged.
Some
valve is stopped
or clogged.
Are the
wirings proper?
(Overheat prevention
temperature
switch)
NO
NO
Is there
continuity?
(Overheat prevention
temperature
switch)
Control panel display
AA
Overheated Heater
1
Applicable Models
AKZ**A-H
(All models equipped with
heater)
2
Methods of Malfunction Detection
Superheat prevention
temperature switch (S4T)
3
Malfunction Decision Conditions
Class Conditions
51
When the heater overheat
prevention is activated.
Actuating temperature:
80℃ (AKZ14A–43A-H)
70℃ (AKZ56A, 90A-H)
4
Supposed Causes
1Inadequate oil quantity
refilled
1Inadequate oil flow rate
1Faulty wiring of pump
1Faulty magnetic contactor
1Faulty control board (A1P)
00_PB00540A_M10.indb 88 2023/08/09 12:59:05