Troubleshooting; Equipment Does Not Operate - Daikin ACEF 3AVE Service Manual

Troubleshooting

1. Troubleshooting

1.1

Equipment does not Operate.

Method of
Malfunction
Detection
Malfunction
Equipment cannot be operated by remote controller or switch on main unit.
Decision
Conditions
Supposed Causes
Troubleshooting
20
Faulty door switch (safety switch assembly)
Blown fuse
Faulty transformer
Faulty printed circuit board (control PCB assembly, display PCB assembly)
Check door switch
(safety switch assembly).
Does
equipment fail
to operate when
short-circuited?
YES
Check connector
connection of A1P
control PCB assembly.
Is connection
normal?
YES
Check fuse for A1P
control PCB assembly.
Is there
continuity in fuse?
YES
Check transformer
secondary voltage (X3A).
Is voltage
higher than 12.5
VDC and lower than
23 VDC?
YES
To next page
NO
NO
NO
NO
SiE00-06
Defective door switch
(safety switch assembly)
Correct connector connection.
Replace fuse.
Replace transformer.
(EF001)
Troubleshooting