Troubleshooting
Samsung Electronics
4-11
4-4-2 When error code "
" between main
↔
panel is indicated on the indoor temperature
display area
1. Cause of malfunction
1) Disconnected or loosely connected main
↔
panel connection wire
2) Faulty indoor unit Main PBA
3) Faulty Panel PBA
2. Check procedure
Replace faulty Panel PBA
Re-inspect connection of main
↔
panel PBA wire
Connect Panel PBA and Main PBA
Inspect or replace connector wire
No
Yes
Yes
No
When measuring
numbers 2-3, 2-4 pin test of Panel PBA CN30,
does it fluctuate (during communications)
between DC3V~DC5V?
Is the connection wire
between the main
↔
Panel PBA disconnected
or loosely connected?
<Measure voltage>
Turn on the main power switch.
