Toshiba MCY-MHP0305HT-C Service Manual page 59

2
Turn on the indoor and outdoor units of the refrigerant line for which you want to initialize the
addresses. About one minute after turning on the power, confirm that the 7-segment display on
the outdoor unit indicates "U.1. - - -" and operate the interface P.C. board on the outdoor unit of
the refrigerant line as follows.
S W 0 1 S W 0 2 S W 0 3
Confirm that the 7-segment display indicates
2 1 2 "A.d.buS" and turn SW04 ON for more than five
seconds.
Confirm that the 7-segment display indicates
2 2 2 "A.d.nEt" and turn SW04 ON for more than five
seconds.
3
Confirm that the 7-segment display indicates "A.d. C.L." and set SW01, SW02 and SW03 to 1, 1, 1
respectively.
4
After a time "U.1.L08" appears on the 7-segment display if the address clearing has been
completed successfully.
If the 7-segment display indicates "A.d. n.G.", the outdoor unit may still connected with other
refrigerant lines. Check the connection of the relay connectors between [U1, U2] and [U3, U4].
NOTE
Take care to carry out the procedure above correctly; otherwise, addresses in other refrigerate lines may also be
cleared.
5
Set the addresses again after finishing the clearance.
S W 0 4
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C e l a a r b e l a d d e r s s e s
System / indoor unit / group address
Central control address