Outdoor Unit Pcb Abnormality (24/32 Class) - Daikin SUPER MULTI NX G Series Service Manual

Troubleshooting

5.10 Outdoor Unit PCB Abnormality (24/32 Class)

E1
Remote
Controller
Display
Outdoor Unit LED
A
Display
Method of
Detect within the program of the microcomputer.
Malfunction
Detection
Malfunction
The program of the microcomputer is in abnormal running order.
Decision
Conditions
 Noise
Supposed
 Momentary fall of voltage
Causes
 Momentary power failure
 Defective outdoor unit PCB
Troubleshooting
115
1 2 3 4
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Power on again
Error again?
NO
Check to see that the unit is
grounded.
Grounded?
YES
YES
NO
SiUS12-928_A
Replace the outdoor unit PCB.
Carry out grounding work.
The cause can be external
factors other than malfunction.
Investigate the cause of noise.
(R7183)
Service Diagnosis