If there is a problem with the network convertor(UTR-YSSA), an error code will appear on D129 of print circuit board.
No error (operation mode)
Initial setting
Circuit board error 1
Circuit board error 2
Transmission error with wired RC
Transmission error with indoor unit
Transmission error with VRF system
Software error
Indoor or outdoor unit error
Error code displayed on network convertor
5-4 NETWORK CONVERTOR
Error code
Error contents
05-09
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