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INDOOR UNIT
No. OBH501
SERVICE MANUAL
Wireless type
Models
MSZ-D30NA
MSZ-D36NA
MSY-D30NA
MSY-D36NA
Outdoor unit service manual
MUZ-D•NA Series (OBH502)
MUY-D•NA Series (OBH502)
CONTENTS
1. TECHNICAL CHANGES······································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. OUTLINES AND DIMENSIONS ························ 7
5. WIRING DIAGRAM ············································ 8
6. REFRIGERAN
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2
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1 TECHNICAL CHANGES MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA 1. New model 3
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2 PART NAMES AND FUNCTIONS MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA Air cleaning filter (Anti-Allergy Enzyme Filter) Front panel Airfilter (Catechin air filter) Air inlet Emergency operation switch Air outlet Operation indicator Horizontal vane lamp Remote control Remote controller receiving section MSZ-D30NA ACCESSORIES MSZ-D36NA MSY-D30NA MSY-D36NA Installation plate 1 Installation plate screw 4 × 25 mm 7 Remote controller holder 1 Screw for × 3.5 × 1.6 mm (Black) 2 Battery (AAA) for remote co
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3 SPECIFICATION Model MSZ-D30NA MSY-D30NA MSZ-D36NA MSY-D36NA External fi nish White Power supply V, phase, Hz 208 / 230 , 1 , 60 Max. fuse size (time delay)/ Disconnect switchA15 Min. circuit ampacity A 1.0 Fan motor F.L.A 0.76 HEAT Dry CFM 445-639-848 — 445-639-848 — Airfl ow COOL Dry Low-Med.-High CFM 389(350)-639(576)-848(763) 389(350)-639(576)-848(763) (Wet) Moisture removal pt./h 9.9 11.3 11.9 Cooling dB(A) 32-42-49 32-42-49 32-42-49 32-42-49 Sound level Low
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3-1. OPERATING RANGE (1) POWER SUPPLY Rated voltage Guaranteed Voltage 208/230 V Min.187 V 208 V 230 V Max.253 V Indoor unit 1 phase 60 Hz (2) OPERATION Intake air temperature (°F) Mode Condition Indoor Outdoor DB WB DB WB Standard temperature 80 67 95 — Maximum temperature 90 73 115 — Cooling Minimum temperature 67 57 14 — Maximum humidity 78 % — Standard temperature 70 60 47 43 Heating Maximum temperature 80 67 75 65 Minimum temperature 70 60 14 13 3-2. OUTLET AIR SPEED AND COVERAGE RAN
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4 OUTLINES AND DIMENSIONS Unit : inch MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA Indoor unit 2-11/16 4-11/16 45-1/2 20-7/8 17-11/16 2-3/16 5-3/8 11-5/8 1/4 Wall hole ø3 Air in 46-1/16 Installation plate Piping Drain hose 2-15/16 33-11/16 9-1/2 2-5/8 5-7/8 Air out 2-5/16 3/4 Piping Insulation ø3/8 19-11/16 Liquid line ø1-1/4 O.D (Flared connection ø3/8) ø9/16 I.D ø5/8 16-7/8 ø1-15/16 O.D Gas line (Joint connection ø5/8) ø1-1/4 I.D Wireless remote controller ø5/8 ø1-15/16 O.D Joint (Flared connecti
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5 WIRING DIAGRAM MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA 8
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6 REFRIGERANT SYSTEM DIAGRAM Unit:inch MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA Refrigerant pipe ø5/8 (with heat insulator) Indoor coil Indoor heat thermistor exchanger RT12(main) Flared connection Indoor coil Distributor Joint thermistor Joint connection RT13(sub) Room temperature thermistor RT11 Flared connection Strainer Refrigerant flow in cooling Refrigerant pipe ø3/8 (with heat insulator) Refrigerant flow in heating 9
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7 SERVICE FUNCTIONS MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA 7-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the indoor electronic control P.C. board. The time will be shortened as follows. (Refer to 9-7.) Set time : 1-minute 1-second Set time : 3-minute 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by short circuit-of JPG and JPS.) 7-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
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7-3. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed are memorized by the indoor electronic control P.C. board. The “AUTO RESTART FUNCTION” sets to work the moment power has restored after power failure. Then, the unit will restart automatically. Operation If the main power has been cut, the operation settings remain. After the power is restored, the unit restarts automatically according to the
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8 MICROPROCESSOR CONTROL MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA WIRELESS REMOTE CONTROLLER These pictures show MSZ type. Signal transmitting section Operation display section OPERATE/STOP (ON/OFF) button VANE CONTROL button FAN SPEED (Horizontal vane button) CONTROL button Temperature buttons OPERATION SELECT button OFF TIMER button ECONO COOL button ON TIMER button TIME SET buttons WIDE VANE button (Vertical vane button) FORWARD button Indication of BACKWARD button remote controller POWER
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8-1. COOL ( ) OPERATION (1) Press OPERATE/STOP (ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with OPERATION SELECT button. (3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button) to select the desired temperature. The setting range is 61 ~ 88 °F (16 ~ 31 °C). 1. Coil frost prevention When the temperature of indoor heat exchanger becomes too low, the coil frost prevention mode works. The indoor fan operates at the set spe
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(4) The initial set temperature is decided by the initial room temperature. Model Initial room temperature Initial set temperature 79 °F (26 °C) or more 75°F (24 °C) COOL mode of "I FEEL 1 CONTROL" 77 °F (25 °C) to 79 °F (26 °C) Initial room temperature minus 4 °F (2 °C) DRY mode of "I FEEL more than 55 °F (13 °C), Initial room temperature minus 4 °F (2 °C) CONTROL" less than 77 °F (25 °C) 1 When the system is restarted with the remote controller, the system operates with the p
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8-7. AUTO VANE OPERATION 1. Horizontal vane (1) Vane motor drive These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approx. 12 V) transmitted from indoor microprocessor. (2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button. (3) Positioning To confirm the standard position, the vane moves until it touches the vane stopper. Then the vane is set to the
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2. Vertical vane (1) Vane motor drive These models are equipped with a stepping motor for the vertical vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approx. 12 V) transmitted from microprocessor. (2) The vertical vane angle and mode change as follows by pressing WIDE VANE button. 1 2345 SWING 6 (3) Positioning The vane is once pressed to the vane stopper to confirm the standard position and then set to the desired angle. Confirming of standard posi
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8-8. TIMER OPERATION 1. How to set the time (1) Check that the current time is set correctly. NOTE : Timer operation will not work without setting the current time. Initially “0:00” blinks at the current time display of TIME MONITOR, so set the current time correctly with CLOCK SET button. How to set the current time (a) Press the CLOCK set button. (b) Press the TIME SET buttons ( and ) to set the current time. • Each time FORWARD button ( ) is pressed, the set time increases by 1 minute,
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8-9. EMERGENCY/TEST OPERATION In case of test run operation or emergency operation, use EMERGENCY OPERATION switch on the front of the indoor unit. Emergency operation is available when the remote controller is missing, has failed or the batteries of the remote controller run down. The unit will start and OPERATION INDICATOR lamp will light. The first 30 minutes of operation is the test run operation. This operation is for servicing. The Indoor fan speed runs at High speed and the system is i
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9 TROUBLESHOOTING MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA 9-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of the following during servicing 1) Before servicing the air conditioner, be sure to turn off the unit first with the remote controller, and then after confirm- ing the horizontal vane is closed, turn off the breaker and / or disconnect the power plu
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9-2. FAILURE MODE RECALL FUNCTION Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (9-4.) disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which doesn't recur. 1. Flow chart of failure mode recall function for the indoor/outdoor unit Operational procedure The cause of abnormality
