SiBE121135_A Troubleshooting for Outdoor Unit
Service Diagnosis 208
7.6 Outdoor Unit PCB Abnormality
Error Code E1
Outdoor Unit LED
Display
A j 1 i 2 i 3 i 4 h 5 h
∗ LED5 is equipped only on the 5-room model.
Method of Error
Detection
Detect within the program of the microcomputer.
Error Decision
Conditions
The program of the microcomputer is in abnormal running order.
Supposed
Causes
Defective outdoor unit PCB
Noise
Momentary fall of voltage
Momentary power failure
Troubleshooting
(R7183)
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
YES
NO
NO
YES
Replace the outdoor unit PCB.
Carry out grounding work.
The cause can be external
factors other than malfunction.
Investigate the cause of noise.
Power on again
Error again?
Check to see that the unit is
grounded.
Grounded?
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