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Mitsubishi Electronics
MSZ-FD09NA service manual
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40 pages, 2.71 Mb
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TECHNICAL CHANGES
MSZ-FD09NA
MSZ-FD12NA
1. New model.
Contents
Main
SERVICE MANUAL
Wireless type Models
MSZ-FD09NA MSZ-FD12NA
No. OBH497
INDOOR UNIT
Page
Page
PART NAMES AND FUNCTIONS
2
ACCESSORIES
3
Page
4OUTLINES AND DIMENSIONS
Unit : inch
Air out
Air in
Page
REFRIGERANT SYSTEM DIAGRAM
6
MSZ-FD09NA MSZ-FD12NA
Refrigerant flow in cooling Refrigerant flow in heating
Unit:inch
7SERVICE FUNCTIONS
7-1. TIMER SHORT MODE
7-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
Table 1
NOTE:
7-3. AUTO RESTART FUNCTION
Operation
How to release AUTO RESTART FUNCTION
8MICROPROCESSOR CONTROL
WIRELESS REMOTE CONTROLLER
MSZ-FD09NA MSZ-FD12NA
INDOOR UNIT LAMP
8-1. COOL ( ) OPERATION
8-2. DRY ( ) OPERATION
8-3. HEAT ( ) OPERATION
8-4. AUTO CHANGE OVER AUTO MODE OPERATION
8-5. AUTO VANE OPERATION
Page
Page
8-6. i-see CONTROL OPERATION
8-7. AREA ( ) SETTING
Indoor unit installation location and air-conditioning area
Not lighted
Approx. 150 degrees
Page
PROGRAM TIMER
8-11. Changing temperature indication (F/C)
8-9. EMERGENCY/TEST OPERATION
8-10. 3-MINUTE TIME DELAY OPERATION
TROUBLESHOOTING
9-1. CAUTIONS ON TROUBLESHOOTING
9
9-2. FAILURE MODE RECALL FUNCTION
1. Flow chart of failure mode recall function for the indoor/outdoor unit
2. Indoor unit failure mode table
NOTE : Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (9-4.).
9-3. INSTRUCTION OF TROUBLESHOOTING
9-4. TROUBLESHOOTING CHECK TABLE
AREA R POWERL
9-5. TROUBLE CRITERION OF MAIN PARTS
A Check of indoor fan motor
9-6. TROUBLESHOOTING FLOW
B Check of remote controller and indoor electronic control P.C. board
Check if the remote controller is exclusive for this air conditioner.
C Check of indoor electronic control P.C. board and indoor fan motor
D How to check miswiring and serial signal error
E Electromagnetic noise enters into TV sets or radios
MSZ-FD09NA MSZ-FD12NA
}
Indoor electronic control P.C. board
9-7. TEST POINT DIAGRAM AND VOLTAGE
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Page
DISASSEMBLY INSTRUCTIONS
MSZ-FD09NA MSZ-FD12NA
1. Removing the panel
10
Photo 1
Photo 3
Photo 4
Photo 2
3. Removing the electrical box
4. Removing the nozzle assembly
Photo 7
5. Removing the vertical vane motor unit
Photo 5
6. Removing the horizontal vane motor
7. Removing the indoor fan motor and the line flow fan
Photo 10
Photo 11
Photo 8