Panasonic S-36PU1E5A Service Manual

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Contents

Panasonic S-36PU1E5A Service Manual Manual pdf 551 page image

4-434CN-A.ADD••••setting if wiring is connected only to an outdoor unit and indoor units in a singlesystem and the inter-unit control wiring does not cross multiple systems.•The setting is “1” at the time of shipment. It is not necessary to change theIf wiring links the inter-unit control wiring for multiple systems to the samecommunications lines, then a different address must be set for each refrigeranttubing system.••• In the case of link wiring which combines the inter-unit control wiring formultiple systems into a single communications circuit, leave the connectingsocket in place at only one of the outdoor units, and move the socket from the“SHORT” side to the “OPEN” side at all other outdoor units. If multipleconnecting sockets are left in place, communications trouble will occur.Rotary switch (10 positions, yellow): Outdoor system address setting switch•switch and S002.••If 10 systems or more are set, the setting is made by a combination of this DIPIf 10 – 19 systems are set, set switch 1 (10s digit) to ON.If 20 – 29 systems are set, set switch 2 (20s digit) to ON, and set switch 1 (10sdigit) to OFF.•4-14. Functions of Outdoor Unit PCB2P plug : Automatic address setting pinShort-circuit this pin for 1 second or longer to automatically set the addressesat the indoor units that are connected to that outdoor unit and are within thesame system.The system address is “1” at the time of shipment. Automatic address setting isnecessary even for communications lines in a single system where the inter-unit control wiring does not cross to any other systems.While automatic address setting is in progress, the 2 LEDs (LED1, 2: red) onthe outdoor unit control PCB blink alternately. (Short-circuiting this pin whileautomatic address setting is in progress will stop the automatic address settingoperation.)If wiring links multiple systems, a maximum of 30 systems (up to 64 indoorunits) can be connected. This setting can be set up to “39,” however control willbe for 30 systems even if the setting is set to higher than 30. An alarm will bedisplayed if system addresses are duplicated. (For details, refer to Table 1.)DIP switch (2P): Switches for setting system address 10s digit and 20s digitIf 30 systems are set, set both switch 1 (10s digit) and switch 2 (20s digit) toON.(For details concerning S002 and S003, refer to Table 1.)Jumper wire3P plug : For communications circuit impedance matchingA connecting socket (3P, black) is attached to the terminal plug at the time ofshipment from the factory.TERMINALJP001S003S002