3
9.7 Error messages .................................................................................................. 21
10. Modbus communication protocol ...................................................................... 21
10.1 Modbus register types ....................................................................................... 21
10.2 Discrete Input Register ..................................................................................... 21
10.3 Coils Register ................................................................................................... 22
10.4 Input Register ................................................................................................... 22
10.5 Holding Register ............................................................................................... 22
11. Operation instructions of guide vane ................................................................ 24
12. Check after installation and test operation........................................................ 25
13. Installation and maintenance of healthy filter ................................................... 25
13.1 Installation ........................................................................................................ 25
13.2 Cleaning and maintenance ................................................................................ 26
13.3 Service life ....................................................................................................... 26
14. Clean and care ................................................................................................... 26
14.1 Clean the front panel......................................................................................... 26
14.2 Clean the air filter ............................................................................................. 26
15. Troubleshooting ................................................................................................. 28
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