Sanyo XH4242 / CH4242, XH3642 / CH3642, XH2442 / CH2442, UH3642 / CH3642, TH4242 / CH4242 1931MI

4. Service procedures

Important

Never press (clear) button unless you want to erase the accessed data in memory. Follow the procedure below only when erasing is necessary.

❏To erase accessed data, press the button.

❏When erasing is finished,“----” mark appears on the controller’s display.

CAUTION

After checking the alarm messages, be sure to press the button.

(E)Execute the auto. address operation

❏Auto. address operation is executed by pressing the A. ADD (S1) button of out- door unit’s PCB usually.

For your convenience it can be executed by remote controller also.

aPress the and ( ) buttons at the same time for more than 4 seconds. (Fig. IV-7)

bSet CODE No. A1 with , ( ) button.

a

In this mode, the auto. address operation is executed at each R.C. (Refrigerant Circuit) line one by one.

b

dc

Fig. IV-7

1931_M_I

cSelect R.C. No. which you want to execute the auto. address operation with button.

dPress the button. The auto. address operation will start. CODE No. changes from flashing to ON state.

eIf an error occurs during operation, the alarm message will be displayed. Check and re-

move the cause. If you want to stop the operation, press the button then the unit

stands in waiting mode (Press the button again.)

fIf the automatic address operation finishes, the display will disappear.

gExecute the operation of the other R.C. line in the same way by following the above steps c to d .

SM830082

4

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