Outdoor Unit Pcb Abnormality - Daikin F-Series Service Manual

Troubleshooting
4.7

Outdoor Unit PCB Abnormality

E1
Remote
Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Power on again
Check to see that the machine is
grounded.
102
Detect within the programme of the microcomputer that the programme is in normal running
order.
When the programme 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.
Error again?
NO
Grounded?
YES
YES
NO
Si04-703A
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