Toshiba RAV-HM561UTP Series Service Manual page 75

[2] P.C. Board for indoor unit servicing replacement procedures
Step 1 Replace the P.C. board to the P.C. board for indoor unit servicing.
At this time, perform the same setting of the jumper wire (J01, J08, J09) setting (cut), switch SW501,
(short-circuit) connector CN34 as the setting of the P.C. board before replacement.
Connector (CN504)
for drain pump
Step 2 According to the system configuration, turn on the indoor unit following to the either methods shown below.
a) Single operation (Indoor unit is used as standalone.)
Turn on the indoor unit.
1. After completion of the auto-address setting mode (required time: approx. 5 min.), proceed to [3].
(Line address = 1, Indoor unit address = 1, Group address = 0 (standalone) are automatically set.)
2. Push the following button on the wired remote controller to interrupt the automatic addressing
mode and proceed to [3]. (The unit number "ALL" is displayed.)
• RBC-ASCU1*: [menu] + [
• RBC-AMTU3*: [SET] + [CL] + [TEST], 4 seconds or more
• RCB-AMSU5*: [MENU] + [V], 4 seconds or more
* Code No. (DN) [100] and later cannot be set, so after setting the address (DN [12], [13], [14]),
restart and proceed to [3].
b) Group operation (including twin system)
Turn on the indoor unit(s) with its P.C. board replaced to the P.C. board for indoor unit servicing,
according to either methods 1 or 2 shown below.
1. Turn on only the indoor unit with its P.C. board replaced. (Be sure to confirm the remote controller
is surely connected. If not, the operation [3] cannot be performed.)
Then, the method a) above is performed.
2. Turn on the multiple indoor units including the indoor unit with its P.C. board replaced.
• Twin 1 system only
• All group connections
After completion of the auto-address setting mode (required time: approx. 5 min.), proceed to [3].
∗ The header unit of the group may be changed by performing the auto-address setting.
Also, the system address/Indoor unit address of the indoor unit with its P.C. board replaced may be
assigned to the addresses (not used) other than those of the indoor units without its P.C. board
replaced.
It is recommended to keep the information in advance, which refrigerant system the indoor unit
belongs to or whether the indoor unit works as the header unit or the follower unit in the group
control operation.
If the plug for short-circuit is attached on the P.C. board
before replacement, attach it on the P.C. board replaced.
], 10 seconds or more
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