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OB371_--1qxp 05.1.17 12:50 Page 1
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
No. OB371
SERVICE MANUAL
Wireless type
Models
E1
(WH)
MSZ-FA25VA -
E1
(WH)
MSZ-FA35VA -
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ······················
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OB371_--1qxp 05.1.17 12:50 Page 2 1 TECHNICAL CHANGES E1 E1 MSZ-A09YV - MSZ-FA25VA - E1 E1 MSZ-A12YV - MSZ-FA35VA - 1. Indication of capacity has been changed.(BTU base kW base) 2. Controller method between indoor and outdoor has been changed. 3. Power supply method has been changed (change to supply from outdoor unit). 4. Power supply cord has been removed. 5. Indoor electronic control P.C. board has been changed. 6. Position of terminal block has been changed. 7. Indoor fan motor has
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OB371_--1qxp 05.1.17 12:50 Page 3 2 PART NAMES AND FUNCTIONS INDOOR UNIT E1 MSZ-FA25VA - E1 MSZ-FA35VA - Air inlet PLASMA AIR PURIFYING filter Front panel Panel PLASMA DEODORIZING filter Heat exchanger Anti-mold air filter Fan guard Air outlet Vertical vane Horizontal vane Remote controller Line flow fan Auto front panel Operation section Display section When the unit starts operating, the (When the front panel is opened) front panel opens automatically to draw in air. When the unit stops P
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OB371_--1qxp 05.1.17 12:50 Page 4 E1 MSZ-FA25VA - E1 MSZ-FA35VA - E1 MSZ-FA25VA - ACCESSORIES E1 MSZ-FA35VA - Installation plate 1 1 2 Installation plate fixing screw 4 o 25 mm 5 Remote controller holder 3 1 4 Fixing screw for 3 3.5 o 1.6 mm (Black) 2 5 Battery (AAA) for remote controller 2 6 Wireless remote controller 1 7 Felt tape (Used for left or left-rear piping) 1 REMOTE CONTROLLER Signal transmitting section Operation display section OPERATE/STOP (ON/OFF) button Temperature buttons Ind
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OB371_--1qxp 05.1.17 12:50 Page 5 3 SPECIFICATION E1 E1 Indoor model MSZ-FA25VA - MSZ-FA35VA - Function Cooling Cooling Heating Heating Single phase Single phase Power supply 230V,50Hz 230V,50Hz Air flow(Super High) K /h 594 612 594 612 Capacity W W W W W W W W W W W W W W W Air flow(High /Med. /Low ) K /h 474 /354 /252 498 /384 /264 474 /354 /258 498 /384 /276 Power outlet A 10 10 Running current ] 1 A 0.25 0.25 Power input ] 1 W 33 33 Auxiliary heater A(kW) — — Power factor ] 1
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OB371_--1qxp 05.1.17 12:50 Page 6 4 NOISE CRITERIA CURVES E1 MSZ-FA25VA - E1 MSZ-FA35VA - FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE 42 COOLING 42 COOLING Super High Super High HEATING 42 HEATING 42 Test conditions, Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Heating : Dry-bulb temperature 20: Wet-bulb temperature 15: H
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OB371_--1qxp 05.1.17 12:50 Page 7 5 OUTLINES AND DIMENSIONS E1 Unit : mm MSZ-FA25VA - E1 MSZ-FA35VA - INDOOR UNIT 11o26 Oblong hole 11o20 Oblong hole 55 225 225 55 Installation plate 780 155 155 55 335 320 70 Indoor unit Air in Wall hole [65 198 5 Installation plate Liquid line [6.35 - 0.5m Gas line [9.52 - 0.43m Insulation [35 O.D { [19 I.D Drain hose [16 (Connected part O.D) 90 Insulation [28 53.5 624.5 102 106 58 19 Air out Required space (Indoor unit) Wireless remote contr
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OB371_--1qxp 05.1.17 12:50 Page 8 6 WIRING DIAGRAM E1 MSZ-FA25VA - E1 MSZ-FA35VA - MODELS WIRING DIAGRAM INDOOR UNIT INDOOR ELECTRONIC 4 CONTROL P.C. BOARD RT13 TB 3 TAB3 CN F11 230V~ S1 BLK 112 2 RT12 1 S2 DB111 TO OUTDOOR T111 BLU CN UNIT 2 RT11 111 12-24V S3 RED NR11 CONNECTING 1 RED 1 CN201 2 BLK 5 3 MF WHT 4 YLW 5 LD104 BLU 6 CN CN LD LD CN CN CN CN 151 1R1 101(A) 105(T) 110 1T1 1T2 1U1 CN211 5 2 3 8 4 3 3 5 5 5 2 INTERLOCK SW P.C. MP PLASMA_A PLASMA_D SWITCH(FAN) BOARD POWER MONITOR SAF
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OB371_--1qxp 05.1.17 12:50 Page 9 8 SERVICE FUNCTIONS E1 MSZ-FA25VA - E1 MSZ-FA35VA - 8-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the 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.) 8-2. P.C. BOARD MODIFICATION FOR
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OB371_--1qxp 05.1.17 12:50 Page 10 How to release “AUTO RESTART FUNCTION” 1Turn off the main power for the unit. 2Solder the Jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 9-7.) JR07 NOTE: • The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote controller. • If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is cancelled. • If the unit has been
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OB371_--1qxp 05.1.17 12:50 Page 11 9 TROUBLESHOOTING E1 MSZ-FA25VA - E1 MSZ-FA35VA - 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 mis-wiring. 2. Take care 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 confirming the horizontal vane is closed, turn off the breaker and / or
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OB371_--1qxp 05.1.17 12:50 Page 12 6. How to remove and install PLASMA DEODORIZING / AIR PURIFYING filter units If PLASMA/WASH lamp on the indoor unit blinks, clean the filters as soon as possible. The lamp will start blinking when accumulated operating time exceeds 330 hours. Figure 1. (1) Switch the indoor unit OFF with the remote controller and disconnect the power supply plug and/ or turn OFF the breaker. NOTE: Otherwise, you may get injured since PLASMA DEODORIZING/AIR PURIFYIN
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OB371_--1qxp 05.1.17 12:50 Page 13 INFORMATION FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT : MXZ series Multi system air conditioner can connect two or more indoor units with one outdoor unit. •Unit won’t operate in case the total capacity of indoor units exceeds the capacity of outdoor units. Do not connect indoor units beyond the outdoor unit capacity. Operation indicator lamp flashes as shown in the figure below. •When you try to operate two or more indoor units with one outdoor unit s
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OB371_--1qxp 05.1.17 12:50 Page 14 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 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 the indoor/outdoor unit failure mode recall function Operational procedure 1
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OB371_--1qxp 05.1.17 12:50 Page 15 2. Flow chart of PLASMA DEODORIZING/PLASMA AIR PURIFYING power failure mode recall function Operational procedure There is a possibility that the plasma unit is abnormal. Confirm the presence of abnormality according to the following procedures. Confirm that the remote controller is in the failure mode recall function. W1. Regardless of normal or abnormal, a short beep is emitted as the signal is received. W1 With the remote controller headed towards t
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OB371_--1qxp 05.1.17 12:50 Page 16 4. Indoor unit failure mode table NOTE: Blinking patterns of this mode differs from the ones of Troubleshooting check table(9-4.). Abnormal point POWER lamp Detection method Check point (Failure mode) Not lighted Normal – – When the room temperature thermistor short Room temperature Refer to the characteristics of the room 1-time flash or open circuit is detected every 8 thermistor temperature thermistor (9-7.). every 0.5-second seconds during operation. Whe
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OB371_--1qxp 05.1.17 12:50 Page 17 9-3. Instruction of troubleshooting w"Test Run operation" If blinking of OPERATION means the operation INDICATOR lamp cannot within 30 minutes after be checked, it can be checked Start EMERGNCY OPERATION with failure mode recall function. switch is pressed. OPERATION Indoor unit OPERATION Indoor unit Indoor unit operates. INDICATOR operates. INDICATOR doesn't receive Outdoor unit doesn't lamp on the Outdoor unit lamp on the the signal fr
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OB371_--1qxp 05.1.17 12:50 Page 18 9-4. Troubleshooting check table · Flashing of POWER lamp indicates abnormalities. Lighted Blinking Not lighted NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table Abnormal No. Operation indicator lamp Symptom Detection method Check point point POWER lamp flashes. 0.5-second ON • Refer to 9-6.D "How to check Mis-Wiring Outdoor unit When the serial signal form the outdoor unit is mis-wiring and
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OB371_--1qxp 05.1.17 12:50 Page 19 · Flashing of AREA lamp(left-hand side lamp) indicates abnormality. Lighted Blinking Not lighted NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table Abnormal No. Operation indicator lamp Symptom Detection method Check point point Left lamp of AREA lamp flashes. Indoor unit Indoor When it cannot properly read data in the 4-time flash and outdoor • Replace the indoor electronic control nonvolat
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OB371_--1qxp 05.1.17 12:50 Page 20 9-5. Trouble criterion of main parts E1 E1 MSZ-FA25VA - MSZ-FA35VA - Part name Check method and criterion Figure Room temperature Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C) thermistor(RT11) Normal Abnormal Indoor coil thermistor Open or short-circuit 8 k" ~ 20 k" (RT12(MAIN), RT13(SUB)) Indoor fan motor(MF) Check 9-6. A. RED Measure the resistance between the terminals with a tester. ROTOR (Part temperature 10°C ~ 30°C) Horizontal va
