3.3.2. Description
▪ Communication error between indoor and outdoor units.
3.3.3. Impact on other units
▪ Refer to 4.2 “Impact on Other Units”.
3.3.4. Possible causes
▪ Communication wires between indoor and outdoor units not connected properly.
▪ Interference from high voltage wires or other sources of electromagnetic radiation.
▪ Communication wire too long.
▪ Damaged main PCB.
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