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Do’s and Don’ts for data communication
Do’s:
▪ Always connect wires in right polarity (all the ‘A’ terminals together and all the ‘B’ terminals together.)
▪ Always use SHIELDED TWISTED PAIR CABLE for data communication.
▪ Always use good quality cable for data communication.
▪ Always use correct size of cable (1 mm square) for data communication.
▪ Always cross power and data Cable at 90º Angle to avoid interference.
▪ Always keep distance (minimum 6 inches) in power and data communication line if need to run
parallel.
Don’ts:
▪ Never connect cross connection on communication port A to B point.
▪ Never short communication ports as it will damage these ports.
▪ Never connect power supply (high Voltage) on communication ports on PCB, as it will damage these
ports.
▪ Never tie communication cable with power cable or refrigerant pipes.
▪ Never lay your cable next to other electrical cables or other electrical sources of interference to avoid
interference in communication.
▪ Never run Cable in Unsafe Locations.
Never run any data cable beneath the floor.
Replacement of Indoor PRINTED CIRCUIT BOARDS
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