Outdoor Unit Pcb Abnormality - Daikin CTXS09GVJU Service Manual

SiUS12-814

5.10 Outdoor Unit PCB Abnormality

E1
Remote
Controller
Display
Outdoor Unit LED
A 5
Display
Method of
Only for 4MXS32GVJU
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Service Diagnosis
1 4 2 4 3 4 4 1
Detect within the program of the microcomputer that the program is in normal running order.
When the program of the microcomputer is in abnormal running order.
Out of control of microcomputer caused by external factors
Noise
Momentary fall of voltage
Momentary power loss
Defective outdoor unit PCB
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Power on again
Error again?
NO
Check to see that the machine is
grounded.
Grounded?
YES
YES
NO
Troubleshooting
Replace the outdoor unit PCB.
Carry out grounding work.
The cause can be external
factors other than malfunction.
Investigate the cause of noise.
(R7183)
127