Panasonic U-26PE1U6 Technical Data & Service Manual

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Contents

Panasonic U-26PE1U6 Technical Data & Service Manual Manual pdf 216 page image

2-102.ProcessesandfunctionsPush-button switch (black): Automatic address setting switch• If the system address switch (S002: set to 0 at time of shipment) setting is other than"0" (central control), press this switch once to automatically set the addresses at allindoor units which are in the same system, and are connected to that outdoor unit.During automatic address setting, the 2 LEDs (red) on the outdoor unit control PCBblink alternately.(Pressing this switch again stops automatic address setting.)• If automatic address setting is currently in progress at another system that is subjectto central control, only LED 1 on the outdoor unit control PCB blinks to indicate thatautomatic address setting is in progress at another unit. If automatic address setting isin progress at another unit, automatic address setting cannot be started at this unit,even if S001 is pressed.Rotary switch (10 positions, black): System address setting switch• This switch is set to 0 (1 system control) at the time of shipment. However the addressfor each system must be set when multiple systems are controlled or when centralcontrol is used. (Figure 1)• If the system address is set to 0, automatic address setting is started when the power isturned ON. Therefore it is not necessary to use switch SW01 and perform automaticaddress setting in the case of single or simultaneous-operation multi control of a singlesystem.• When using central control for multiple systems, a maximum of 30 systems (maximum64 units) can be connected. In the case of group control or central control, set the sys-tem address to a setting other than 0 (1 or above).• If the number of systems is greater than 9, this switch can be used in combination withDIP switch S003 to set up to 30 systems. The setting can be made as high as 39,however all settings above 30 are handled as 30 for control. (For details, refer to Table 1.)• If system addresses are duplicated (the same address exists more than once), LED 1 onthe outdoor unit control PCB lights up, and alarm "L04" is displayed on the remote con-troller.DIP switch (2P, blue): System address 10s-digit and 20s-digit place setting switch• When setting 10 systems or more, set this switch in combination with S002.• For 10 – 19 systems, set 1P (10s-digit place) to ON.• For 20 – 29 systems, set 2P (20s-digit place) to ON, and set 1P (10s-digit place) to OF F.• For 30 systems, set both 1P (10s-digit place) and 2P (20s-digit place) to ON. (For details,refer to Table 1.)Refrigerant recovery switch (red button switch)• Press this switch to perform refrigerant recovery control using cooling operation. Theindoor unit fan will operate at HIGH and 55 Hz for a maximum of 10 minutes. Whenrefrigerant recovery is completed, close the valves and press this switch to stop theoperation.2P plug (red): Pin used for PCB inspection at the factory3P plug (red): Can be used for demand control• The operating ranges are shown in the table.Test (CN036)EXCT (CN026)S001S002S003S0052P and 3P 1P and 3POperatingrange00110101normal (at shipmentfrom factory)rated capacity70%0%Short-circuited2-6. Outdoor Unit Control PCB (CR-CH4272R)(1) Explanation of Functions2