INSTRUCTIONS FOR REPLACING THE CONTROL UNIT
1. Unscrew the cover and remove
2. Remove the screws from the switch box
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The shortest cable on the switch box can limit access to the sensor sockets.
If there is too much play in the door, the connection cable can be pulled out by 20/30cm through the pipe located at the back of the cabinet
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3. Unplug the sensors' connection sockets from the switch box
4. After having removed the sticker and the paste, remove the safety thermostat sensor from the cabinet chest
5. Unplug the resistance connections from positions: 4SH-L, 4SH-N, H-L, H-N, WH-L, WH-N
6. Unplug the wire connections from the compressor
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7. Disconnect the green/yellow wire connections from the earth: protective conductor on the switch box, safety thermostat cover
8. Replace the control box with a new one containing the appropriate software (according to the spare parts list)
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9. Connect the new sensor's electric sockets to the box
S_RH: humidity sensor
S_P1: lower temperature sensor
S_P2: upper temperature sensor (only in multi-temperature cabinets)
COM: connection cable (display housing)
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10. Connect the resistance cables to the the positions: 4SH-L, 4SH-N, H-L, H-N, WH-L, WH-N - in accordance with the table below
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11. Connect the wires from the compressor in accordance with the wiring diagram
12. Disconnect the green/yellow wire connections from the earth: protective conductor on the switch box, safety thermostat cover
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13. Secure the switch box screws
14. Replace the cover and fix in place with the screws
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