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OBH488-1.qxp 07.8.9 11:47 AM Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
INDOOR UNIT
No. OBH488
SERVICE MANUAL
Wireless type
Models
E1
MSZ-FD25VA -
E1
MSZ-FD25VAS -
E1
MSZ-FD35VA -
E1
MSZ-FD35VAS -
Outdoor unit service manual
MUZ-FD·VA Series(OBH489)
MXZ-A·VA Series (OB377)
MXZ-8A140A (OC316)
CONTENTS
1. TECHNICAL CHANGES ····································3
2. PART NAMES AND FUNCTIONS······················4
3. SPECIFICATION·················································5
4. NOISE CRITE
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OBH488-1.qxp 07.8.9 11:47 AM Page 2 2
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OBH488-1.qxp 07.8.21 9:41 AM Page 3 1 TECHNICAL CHANGES E1 E1 MSZ-FD25VA - MSZ-FD25VAS - E1 E1 MSZ-FD35VA - MSZ-FD35VAS - 1. New model 3
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OBH488-1.qxp 07.8.9 11:47 AM Page 4 2 PART NAMES AND FUNCTIONS MSZ-FD25VA MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS AREA lamp POWER lamp CLEAN lamp PLASMA lamp Remote control Operation Indicator receiving section lamp Front panel Air filter Air inlet Remote controller Plasma anti-allergy enzyme filter Plasma electrode unit Plasma deodorizing filter i-see sensor Air outlet Fan guard Fan Heat exchanger Emergency operation switch Horizontal vane Vertical vane i-see control operation AREA lamp indicate
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OBH488-1.qxp 07.8.9 11:47 AM Page 5 3 SPECIFICATION Indoor model MSZ-FD25VA MSZ-FD35V MSZ-FD25VAS MSZ-FD35VA AS Single phase Power supply 230 V, 50 Hz Power input ✽ 1 Cooling 26 28 W Heating 31 33 Running current ✽ 1 Cooling 0.25 0.27 A Heating 0.30 0.32 Fan motor current ✽ 1 Cooling 0.25 0.27 A Heating 0.30 0.32 Fan motor model RCOJ40-GF Dimensions WOHOD mm 798O295O257 Weight kg 12 Color PURE WHITE SILVER PURE WHITE SILVER Air direction 4 Air flow Cooling 672 K /h (Super High) Heating 726
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OBH488-1.qxp 07.8.9 11:47 AM Page 6 4 NOISE CRITERIA CURVES MSZ-FD25VA MSZ-FD35VA MSZ-FD25VAS MSZ-FD35VAS SPL(dB(A)) FAN SPEED FUNCTION LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High 42 Super High 43 43 HEATING HEATING 43 90 90 80 80 70 70 NC-70 NC-70 60 60 NC-60 NC-60 50 50 NC-50 NC-50 40 40 NC-40 NC-40 30 30 NC-30 NC-30 20 20 NC-20 NC-20 NC-10 NC-10 10 10 63 125 250 500 1000 2000 4000 8000 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz BAND CENTER FREQUENC
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OBH488-1.qxp 07.8.9 11:47 AM Page 7 5 OUTLINES AND DIMENSIONS Unit : mm MSZ-FD25VA 11 X 20 Oblong hole MSZ-FD25VAS 11 X 26 Oblong hole MSZ-FD35VA 225 225 64 64 Installation plate MSZ-FD35VAS 798 785 6.5 155 155 Indoor unit 345 330 69 54 Wall hole [65 Air in Installation plate 257 5 Piping 43 55 688 55 Drain hose 43 85 97 58 19 Air out Insulation [35 O.D Liquid line [6.35 - 0.5 m (Flared connection [6.35) Gas line [9.52 - 0.43 m (Flared connection [9.52) Drain hose Insulation [28 O.D Connected
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OBH488-1.qxp 07.8.9 11:47 AM Page 8 7 REFRIGERANT SYSTEM DIAGRAM MSZ-FD25VA Unit : mm MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS Refrigerant pipe [9.52 (with heat insulator) Indoor coil Indoor thermistor heat RT12 (main) exchanger Flared connection Indoor coil thermistor RT13 (sub) Room temperature thermistor RT11 Flared connection Refrigerant pipe [6.35 (with heat insulator) Refrigerant flow in cooling Refrigerant flow in heating 8
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OBH488-1.qxp 07.8.9 4:06 PM Page 9 8 SERVICE FUNCTIONS MSZ-FD25VA MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS 8-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. The time will be shortened as follows. (Refer to 10-7.) 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.) 8-2. P.C. BOARD
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OBH488-1.qxp 07.8.9 4:06 PM Page 10 8-3. 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. “AUTO RESTART FUNCTION” automatically starts operation in the same mode just before the shutoff of the main power. Operation 1 If the main power has been cut, the operation settings remain. 2 After the power is restored, the unit restarts automatically a
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OBH488-1.qxp 07.8.9 4:06 PM Page 11 9 MICROPROCESSOR CONTROL MSZ-FD25VA MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS WIRELESS REMOTE CONTROLLER Signal transmitting section Operation display section VANE CONTROL button OPERATE/STOP FAN SPEED CONTROL button (ON/OFF) button OFF TIMER button OPERATION SELECT button ON TIMER button ECONO COOL button TIME SET buttons PLASMA button Temperature buttons FORWARD button BACKWARD button CLEAN button WIDE VANE button i-see button (Vertical vane button) AREA button
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OBH488-1.qxp 07.8.9 4:06 PM Page 12 9-1. COOL ( ) OPERATION (1) Press OPERATE/STOP(ON/OFF) button. POWER 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 16 ~ 31 °C. 1. Coil frost prevention The compressor operational frequency is controlled by the temperature of the indoor heat exchanger to prevent the coil from frosting. Whe
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OBH488-1.qxp 07.8.9 4:06 PM Page 13 NOTE 2 FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT : MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit. •When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the others for heating, the operation mode of the indoor unit that operates earlier is selected. The other indoor units cannot operate, indicating as shown in the figure below. In this case, p
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OBH488-1.qxp 07.8.9 4:06 PM Page 14 (7) SWING ( ) mode By selecting SWING mode with VANE CONTROL button, the horizontal vane swings vertically. (8) Cold air prevention in HEAT operation The horizontal vane position is set to Upward. NOTE : When 2 or more indoor units are operated with multi outdoor unit, even if any indoor unit turns thermostat off, this control doesn’t work in the indoor unit. (9) To change the airflow direction not to blow directly onto your body. To change the air When t
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OBH488-1.qxp 07.8.9 4:06 PM Page 15 9-6. i-see CONTROL OPERATION The sensors constantly measure the room and floor/wall temperatures to automatically adjust to the set temperature by esti- mating the temperature actually perceived by a person inside the room (“sensory temperature”). Advantages · The air inside the room is conditioned quickly to a comfortable condition. · The room will not become too cold or hot even when the air conditioner is kept on for a long period. · The air conditioner w
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OBH488-1.qxp 07.8.9 4:06 PM Page 16 Indoor unit installation location and air-conditioning area Installed at left Installed at center Installed at right LEFT RIGHT LEFT RIGHT LEFT RIGHT Be sure to set the slide switch inside the remote controller to an appropriate position in accordance with the installed · position of the indoor unit. If the switch is not set correctly, the air conditioner may not function properly. (Refer to "Remote controller in SERVICE FUNCTIONS".) To air-condition mainl
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OBH488-1.qxp 07.8.9 4:06 PM Page 17 Operation and operating range i-see sensor moves 30 degrees from the center in both right and left side. i-see Sensor turning to the left i-see Sensor turning to the center i-see Sensor turning to the right i-see Sensor operates as follows in accordance with AREA setting made with the remote controller. “AUTO” in AREA setting; first turning to the LEFT for adjusting the position then..... CENTER RIGHT CENTER LEFT CENTER...... (The sensor turns to the right,
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OBH488-1.qxp 07.8.9 4:06 PM Page 18 9-9. CLEAN ( ) OPERATION • When CLEAN operation is set, it performs for 40 minutes when unit is stopped after COOL/DRY operation. CLEAN operation performs when: COOL is operated more than 3 minutes / DRY is operated more than 6 minutes. • The horizontal vane is slightly opened and the fan is stopped for the first 15 minutes. then, the horizontal vane is set to higher than angle 1 and the fan is operaed for 25 minutes. 9-10. TIMER OPERATION 1. How to set the
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OBH488-1.qxp 07.8.9 4:06 PM Page 19 9-11. EMERGENCY/TEST OPERATION In case of test run operation or emergency operation, use EMERGENCY OPERATION switch on the right side 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 AREA lamp will light. The first 30 minutes of operation is the test run operation. This operation is for servicing. The indoor fan runs at High speed
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OBH488-1.qxp 07.8.9 4:52 PM Page 20 10 TROUBLESHOOTING MSZ-FD25VA MSZ-FD25VAS MSZ-FD35VA MSZ-FD35VAS 10-1. 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 main unit first with the remote controller, and then after confirming the horizontal vane is closed, turn OF
