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MULTI V 5 Outdoor Unit Service Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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ERROR CODES
Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
troubleshooting of the Multi V product.
WARNING
Error No. 242
Error No. Description Details Causes
242
Master: 2421
Slave 1: 2422
Slave 2: 2423
Network error. Network error of central controller.
1. RS-485 communication wiring defect.
2. Communication defect between remote
controller and indoor unit.
3. RS-485 DIP switch setting error.
4. Indoor unit addressing setting error on
central controller.
Is the communications
cable of the RS-485 properly
connected.
Reconnect RS-485 communications cable.
No
Yes
Are any indoor unit
addresses repeated?
No
Recheck power and installation.
Reset any indoor unit addresses that are
repeated.
Is the simple central con-
troller setting correct?
Yes
No
Set the slave mode with the simple central
controller after the system is reset.
Yes
Incorrect RS-485 Communication Wiring
Communications LED Between the Network and the Outdoor Unit
(The communications LED flashes on and off when communica-
tion is normal between the network and the outdoor unit.)
Images here are representative of system components. Actual component appearance depends on model and system type.
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