TROUBLESHOOTING
112
Hd
Description
• Communication error between master unit and slave unit(s) (in parallel)
• The unit shuts down.
• The error code is displayed on the water circuit PCB, main PCB and user interface.
Possible causes
• SW9 DIP switch with incorrect settings
• More than two units are connected to the wired controller
• The switch-on interval between the master unit and the slave unit is longer than 2 minutes
• Wire connection error
• Unstable communication between the units
• Address code missing or address code setting duplicated
• The main board fuse is damaged BH
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