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Troubleshooting
4-4-26 Communication error between main and sub Unit of outdoor unit or between outdoor units
Outdoor unit display
Indoor unit display
Criteria
∙ Refer to the judgment method below.
Cause of problem
∙ Communication error between outdoor units.
1. Cause of problem
Check the outdoor unit with error.
Is the power supply normal?
Check wiring of outdoor unit
74
Reset error (Key 3)
(U200, U201, U202, U203)
15V, 5V
Yes
communication cable.
Yes
Check K13 and K14 setup
options for outdoor unit.
Yes
Replace PCB.
Essential Requirements before Changing PCB in Case of Communication Error: Refer to p.59
Operation
Timer
No
No
No
Check the power
Change wiring or connect
Change settings
Samsung Electronics
- Quick Links:
- Product Specifacations
- Indoor Unit
- Indoor Unit
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Table of Contents
Troubleshooting
