Outdoor Unit Pcb Abnormality - Daikin SiENBE07-618_C Service Manual

Troubleshooting
4.8

Outdoor Unit PCB Abnormality

E1
Remote Control
Display
„ Detection within the program of the microcomputer
Method of
Malfunction
Detection
„ The program of the microcomputer is in abnormal running order.
Malfunction
Decision
Conditions
„ Defective outdoor unit PCB
Supposed
„ Noise
Causes
„ Momentary fall of voltage
„ Momentary power failure
Troubleshooting
68
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Turn on the power again.
Error again?
NO
Check to see if the unit is
grounded.
Grounded?
YES
YES
NO
SiENBE07-618_C
Replace the outdoor unit
PCB.
Ground the system.
The cause can be external
factors other than
malfunction.Investigate the
cause of noise.
(R7183)
Service Diagnosis