Service Information - Panasonic CS-W50BTP Service Manual

1 SERVICE INFORMATION

Caution:
Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use
a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
Pb free solder will tend to splash when heated too high (about 1100° F/600°C).
The new Ceiling / new Outdoor models are possible to have address setting for twin / triple control or group control
automatically when main power supply is switched on.
(Manual address setting is also possible by using DSW1 switch on the indoor unit P.C. board.) However, this address setting is
only possible when proper wiring connection is made and indoor unit must be of original unit.
1.1. Example of trouble during test operation
If the below phenomenon is found during test operation, wrong address setting is possible.
Therefore, please inspect the address setting.
1. LCD display of the wired remote control is not illuminated although the main power supply switch is 'on'.
2. LCD display had indicated as normal illumination when power supply switch is 'on', however outdoor unit cannot be operated.
(But, it is necessary to take 3 to 5 minutes for outdoor unit to start from the timing of remote control OFF/ON button is 'on'.)
(For normal operation, the outdoor unit will only start its operation after 3 to 5 minutes upon pressing the OFF/ON button.)
3. P.C. board had memorized wrong setting information.
a. If main power supply is switched on with the wrong connection.
b. When changing the connection or combination of units due to re-installation etc.
• • • • When changing the system from twin to triple (triple to twin).
• • • • When changing the system from group control to normal one to one system.
• • • • When making the replacement of units of master and slave etc.
1.2. Caution during test operation
Do not touch the remote control button and do not change any wirings for one minute when the main power supply switch is 'on'.
(Because the unit is having automatic address setting during the first one minute.)
1.3. Caution during automatic address setting
When the main power supply switch is 'on', the P.C. board will automatically memorize the connecting system.
Consequently, when initial power supply is 'on', there mustn't be any interchanging of units even of the same type and same
capacity unit.
Therefore, connection of the unit to another system is prohibited.
Notice of Address setting for NEW Ceiling / NEW Outdoor Unit.
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