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Air Conditioner
Mitsubishi Electronics
service manual
- page 7
Models:
MUY-D30NA
MUY-D36NA
MUZ-D30NA
MUZ-D36NA
U1
1
7
44
44
Download
44 pages, 3.12 Mb
7
7
5
WIRING DIAGRAM
MUZ-D30NA MUZ-D36NA
Contents
Main
Page
1TECHNICAL CHANGES
PART NAMES AND FUNCTIONS
2
3SPECIFICATION
Test condition
3, 4
OPERATING RANGE (1) POWER SUPPLY
(2) OPERATION
OUTLINES AND DIMENSIONS
4
Page
Page
6REFRIGERANT SYSTEM DIAGRAM
Unit:inch
)
3.6 2.4 50
MUZ-D30NA MUZ-D36NA
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE (R410A:oz.)
Calculation : X oz. = 2.96/5 oz. / ft. x (Refrigerant piping length (ft.) - 25)
DATA7
7-2. PERFORMANCE CURVE
Cooling
MUZ-D30NA MUZ-D36NA
Heating MUZ-D30NA MUZ-D36NA
Page
Page
7-4. STANDARD OPERATION DATA
7-5. CAPACITY AND INPUT CORRECTION BY INVERTER OUTPUT FREQUENCY
7-6. TEST RUN OPERATION (How to operate fixed-frequency operation)
8ACTUATOR CONTROL
MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA
8-3. Relation between main sensor and actuator
8-2. R.V. COIL CONTROL <MUZ>
SERVICE FUNCTIONS
9
9-1. PRE-HEAT CONTROL
9-2. CHANGE IN DEFROST SETTING
10 TROUBLESHOOTING
10-1. CAUTIONS ON TROUBLESHOOTING
Lead wiring Housing point
10-2. FAILURE MODE RECALL FUNCTION
1. Flow chart of failure mode recall function for the indoor/outdoor unit
Operational procedure
2. Flow chart of the detailed outdoor unit failure mode recall function
3. Outdoor unit failure mode table
NOTE : Blinking patterns of this mode differ from the ones of Troubleshooting check table (10-3.).
Page
0.5-second ON 0.5-second ON
ON OFF 2.5-second OFF 2.5-second OFF
Outdoor electronic control P.C. board(Parts side) Lighting
LED2 LED1
10-3. TROUBLESHOOTING CHECK TABLE
Page
10-4. TROUBLE CRITERION OF MAIN PARTS
OPERATION / INDICATOR lamp flashes 5-times. Outdoor unit does not operate.
10-5. TROUBLESHOOTING FLOW
A How to check inverter/ compressor
B Check of outdoor thermistors
MUZ-D30/36
C Check of R.V. coil
D Check of outdoor fan motor
E Check of power supply
G Check of LEV
F Check of compressor start failure
H How to check miswiring and serial signal error
(Parts side)
I
J Electromagnetic noise enters into TV sets or radios
1. Outdoor electronic control P.C. board
(
(
(
(
MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA
(
(
{
{
{
3. Outdoor power board
)
1. Removing the cabinet
<"Terminal with locking mechanism" Detaching points>
Photo 3
Photo 2
11 DISASSEMBLY INSTRUCTIONS
2. Removing the inverter assembly, P.C. board and power board
3. Removing R.V. coil (MUZ)
Photo 4
Photo 5 (Inverter assembly)
Photo 6
5. Removing outdoor fan motor
Photo 7
Photo 8