68
14
Troubleshooting
Diagnostic Procedure for Check Code
Is the system setup of the slave
outdoor unit being completed
?
Is the power supply of the slave
outdoor unit turned on
?
Is communication
cable connected correctly
between the outdoor units
?
Yes
No
No
Yes
No
Yes
No
Yes
Clear the alarm,and the operation
starts (*1).
Turn on the power supply.
Check connection of
communication cable.
Check the connection of the connector.
(BUS communication connector: CN601)
Is the BUS communication
connector (CN601) of the outdoor
unit at the server connected
?
Check interface P.C. board.
Check code
Operation cause
1. Outdoor unit system setup
[8d]
2. Outdoor unit power source
Reduction in the No. of
3. Connection error of communication cable between
connected outdoor units
outdoor units
4. Connection error of BUS communication
5. Interface P.C. board error
Is the No. of connected
outdoor units 5 or below
?
No
Yes
No
Yes
The maximum number of
outdoor units is 5.
Check connection of
communication cable.
Is the communication
cable connected
between outdoor units
?
Check interface P.C. board.
Check code
Operation cause
[8E]
1. No. of connected outdoor units over limit
Outdoor unit connection
2. Connection error of communication cable
over limit
between outdoor units
( *1) How to clear the alarm
Set SW01/SW02/SW03 on interface P.C. board
of the master outdoor unit to 2/16/1
respectively, and push SW04 for 5 seconds.
(Display on the 7 segment display: [Er.] [CL])
Summary of Contents for MM-A0160HX
Page 1: ...Service Manual Air Conditioner Multi Split Type System Modular Multi System HFCR407C A90 0130 ...
Page 2: ......
Page 133: ...134 20 Additional Literature and Contacts ...
Page 134: ...135 20 Additional Literature and Contacts ...
Page 135: ...TOSHIBA AIR CONDITIONING www toshiba aircon co uk MADE IN UK A90 0130 Revised April 2001 ...
