5
10. MODBUS registers
10.1 Controls 143
10.2 States 145
10.3 States of units in cascade 148
10.4 Alarms 150
10.5 Password-protected unit parameters 152
11. Serviceman warnings
11.1 Controls in the area 156
11.2 Work procedures 156
11.3 General work area 156
11.4 Checking the presence of refrigerant 156
11.5 Presence of fire extinguishers 156
11.6 Absence of ignition sources 156
11.7 Area ventilation 157
11.8 Controls on refrigeration equipment 157
11.9 Controls on electrical devices 157
11.10 Repair of sealed components 157
11.11 Reparation of intrinsically safe components 158
11.12 Wiring 158
11.13 Detection of flammable refrigerants 158
11.14 Leak detection methods 158
11.15 Removal and evacuation 159
11.16 Charging operations 159
11.17 Disposal 159
11.18 Labelling 160
11.19 Recovery 160
11.20 Transport, marking and storage of units 160
12. Maintenance
13. Troubleshooting
13.1 General problems 163
13.2 Error codes 167
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