Toshiba MMU-AP0072H2UL-1 Service Manual

Also see for Carrier MMC-AP0181H2UL: Service manual Installation manual Service manual Engineering data book

Contents

1442. Every pushing UNIT LOUVERbutton (button of left side), the indoor unit address in the group are displayed succes-sively. 2Specify the indoor unit No. to be replaced.3. Using the set temperature / buttons, the CODE No. (DN) can be moved up and down one by one. 34. First change the CODE No. (DN) from 1010101010 to 0101010101. (Setting of filter sign lighting time)Make a note of the set data displayed in this time.5. Next change the CODE No. (DN) using the set temperature / buttons.Also make a note of the set data.6. Repeat item 5. and made a note of the important set data as shown in the below table.∗ 0101010101 to AAAAAAAAAA are provided in the CODE No. (DN). On the way of operation, DN No. may skip.7. After finishing making a note, push TESTbutton to return to the usual stop status. 4(Approx. 1 minute is required to be able to use the remote control.)Minimum requirements for CODE No.Capacity of the indoor unit is necessary to setthe revolutions of the fan.Procedure2: Replacement of service P.C. board1. Replace the P.C. board with a service P.C. board.In this time, setting of jumper line (cut) or setting of DIP switch on the former P.C. board should be reflectedon the service P.C. board. Refer to the following table about DIP switch setting and drawing of P.C. boardparts layout.2. It is necessary to set Indoor unit to be exchanged : Remote control = 1 : 1Based upon the system configuration, turn on power of the indoor unit with one of the following items.1) Single (Individual) operationTurn on power of the indoor units and proceed to Procedure 32) Group operationA) In case that power of the exchanged indoor unit only can be turned on.Turn on power of the exchanged indoor unit only and proceed to Procedure 3B) In case that power of the indoor units cannot be turned on individually. (CASE 1 )a) Remove temporarily the group wire connected to the terminal blocks A and B of the exchangedindoor unit.b) After connecting the remote control wire only to the removed terminal block, turn on power of theindoor units and proceed to Procedure 3* When the above methods cannot be used, follow at the CASE 2 below.DN11121314ContentsIndoor unit capacityRefrigerant line addressIndoor unit addressGroup address4312TEMP. ON / OFFSETTIMETESTFILTERRESET CLSAVESWING/FIXVENTUNIT LOUVERCODE No.UNIT No.R.C. No.TIMER SET MODEFANSET DATA SETTING