Toshiba Super MMY-MAP0801HT7 - P.C. Board Exchange Procedures; Exchange of P.C. Board for Indoor Service; Requirement at Exchange of P.C. Board Assembly for Indoor Service

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17. P.C. BOARD EXCHANGE PROCEDURES
17-1. Indoor Unit
17-1-1. Exchange of P.C. Board for Indoor Service
Part code
431-6V-207
431-6V-210
431-6V-225
Model type
MMU-AP
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∗∗∗∗
∗∗ 1WH series
MMU-AP
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∗∗ 1H series
MMU-AP
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∗∗∗∗
∗∗ 1YH series
MMU-AP
∗∗∗∗
∗∗∗∗
∗∗ 1SH series
MML-AP
∗∗∗∗
∗∗∗∗
∗∗ 1H series
MML-AP
∗∗∗∗
∗∗∗∗
∗∗ 1BH series
MMF-AP
∗∗∗∗
∗∗∗∗
∗∗ 1H series
MMU-AP
∗∗∗∗
∗∗∗∗
∗∗ 1BH series
MMU-AP
∗∗∗∗
∗∗∗∗
∗∗ 1H series
MMC-AP
∗∗∗∗
∗∗∗∗
∗∗ 1H series
MMK-AP
∗∗∗∗
∗∗∗∗
∗∗ 1H series
P.C. board model
MCC-1403
MCC-1402
MCC-1402
Label display on P.C. board
03RD M01
03DD M02
03DD M03
Requirement at exchange of P.C. board assembly for indoor service
Before exchange, in the fixed memory (hereinafter EEPROM, IC10) installed on the indoor P.C. board, the type
exclusive to the model and the capacity code are stored at shipment from the factory. The important setup data
such as line/indoor/group address which are set up (Auto/Manual) or high ceiling exchange setup at installation
time, respectively.
Proceed with exchange of P.C. board assembly for indoor service in the following procedure.
After exchange work, check again the setup for indoor unit No. or group header/follower units to confirm whether
the setup contents are correct or not, and then check also the refrigerant circuit system by a test operation, etc.
<Exchange procedure>
Method 1
Before exchange, it is possible to turn on power of the indoor unit and read out the setup
contents from the wired remote controller.
Readout of EEPROM data: Procedure 1
ò
Exchange of P.C. board for service & power ON: Procedure 2
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Writing-in of the readout EEPROM data: Procedure 3
ò
Power supply reset (All the indoor units connected to the remote controller in case of group operation control)