Toshiba MMD-AP0246BHP1-E - User Manual

R410A
FILE NO. SVM-16043
SERVICE MANUAL
AIR-CONDITIONER
MULTI TYPE
INDOOR UNIT
< Concealed Duct Standard Type >
MMD-AP0076BHP1-E
MMD-AP0096BHP1-E
MMD-AP0126BHP1-E
MMD-AP0156BHP1-E
MMD-AP0186BHP1-E
MMD-AP0246BHP1-E
MMD-AP0276BHP1-E
MMD-AP0306BHP1-E
MMD-AP0366BHP1-E
MMD-AP0486BHP1-E
MMD-AP0566BHP1-E
MMD-AP0076BHP1-TR
MMD-AP0096BH
P1-TR
MMD-AP0126BHP1-TR
MMD-AP0156BHP1-TR
MMD-AP0186BHP1-TR
MMD-AP02
46BHP1-TR
MMD-AP0276BHP1-TR
MMD-AP0306BHP1-TR
MMD-AP0366BHP1-TR
MMD-AP0486BHP1-TR
MMD-AP0566BHP1-TR
April
201 6

Summary

PRECAUTIONS FOR SAFETY

SPECIFICATIONS

AIR DUCTING WORK

WIRING DIAGRAMS

REFRIGERANT CYCLE DIAGRAM

APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION)

8-1. Indoor controller block diagram

Diagrams illustrating indoor unit controller connections and logic.

8-1-1. Wired (Simple) Remote Controller Connection

Block diagram for wired remote controller setup.

8-1-2. Wireless Remote Controller Connection

Block diagram for wireless remote controller setup.

8-1-3. Connection of Both Wired and Wireless Controllers

Block diagram for connecting both wired and wireless controllers.

8-2. Indoor Print Circuit Board MCC-1631

Detailed layout and component identification of the indoor P.C. board.

8-3. Optional connector specifications of indoor P.C. board

8-4. Test operation of indoor unit

Procedure for performing a test operation of the indoor unit independently.

8-5. Method to set indoor unit function DN code

8-6. Applied control of indoor unit

Error Clearing and Monitoring Functions

Procedures for clearing errors and monitoring unit status via remote controller.

TROUBLESHOOTING

9-2. Troubleshooting method

Procedure for identifying faults using check codes displayed on controllers.

9-3. Troubleshooting based on information displayed on remote controller

Diagnosing faults by interpreting information on remote controllers.

9-4. Check codes displayed on remote controller and SMMS outdoor unit (7-segment display on I;F board) and locations to be checked

Mapping check codes on I/F board to locations and fault detection conditions.

9-5. Sensor characteristics

Resistance characteristics of indoor unit temperature sensors (TA, TC1, TC2, TCJ).

P.C. BOARD EXCHANGE PROCEDURES

10-1. Replacement of indoor P.C. boards

Step-by-step procedures for replacing the indoor P.C. board assembly.

Method 1: Reading EEPROM data via Remote Controller

Procedure to read setting data from EEPROM using a wired remote controller.

Procedure 2: Replacing P.C. board

Steps for physically replacing the faulty P.C. board with a new one.

Procedure 3: Writing setting data in EEPROM

Procedure to write setting data into the new EEPROM.

Toshiba MMD-AP0246BHP1-E Specifications