Mitsubishi Electronics MSZ-GE18NA manual

SER VICE MANUAL CONTENTS 1. TECHNICAL CHANGES ······································· 2 2. P ART NAMES AND FUNCTIONS ····················· 2 3. SPECIFICA TION ················································ 3 4. OUTLINES AND DIMENSIONS ··?[...]

2 MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA 1. New model 1 TECHNICAL CHANGES MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA ACCESSORIES Installation plate 1 Installation plate fi xing screw 4 × 25 mm 5 Remote controller holder 1 Fi[...]

3 Indoor model MSZ-GE06NA MSZ-GE09NA MSY -GE09NA MSZ-GE12NA MSY -GE12NA Power supply V , phase, Hz 208/230, 1, 60 Max. fuse size (time delay)/ Disconnect switch A1 5 Min. circuit ampacity A 1.0 Fan motor F .L.A 0.76 Air fl ow Super High - High - Med. - Low - Quiet COOL Dry (Wet) CFM 399-321-237-170-145 (364-286-201-134-109) HEA T Dry CFM 406-321-2[...]

4 3-2. OUTLET AIR SPEED AND COVERAGE ● The air coverage is the figure up to the position where the air speed is 1 ft./s., when air is blown out horizontally from the unit properly at the High speed posi- tion. The coverage should be used only as a general guideline since it varies accord- ing to the size of the room and furniture arranged inside [...]

5 Unit: inch MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA 8-5/16 9-1/8 9-15/16 7/8 6-1/8 6-1/8 3-1/8 3-1/8 8-7/8 8-7/8 1/8 3/4 6 - 1/4 2- 5/16 3/16 9-1/8 2-3/16 2-3/4 31-7/16 30-15/16 1/4 5-1/8 24-3/8 1-15/16 11-5/8 1-15/16 1-5/8 2-3/16 1-11/16 1-5/8 5/16 3-15/16 4/3/16 4-3/8 1-3/4 2-3/16 2-[...]

6 MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA 5 WIRING DIAGRAM[...]

7 MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA Unit: inch Indoor heat exchanger Flared connection Room temperature thermistor RT1 1 Flared connection Refrigerant pipe ø3/8 ( MSZ-GE06/09/12NA, MSY -GE09/12NA ) ø1/2 ( MSZ-GE15/18NA, MSY -GE15/18NA ) (with heat insulator) Refrigerant pipe ø1[...]

8 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 sho[...]

9 C N111 CN1 12 CN151 CN10A Indoor electronic control P .C. board 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 ST ART/STOP timer is active, the timer setting is cancelled. • If the[...]

10 WIRELESS REMOTE CONTROLLER MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA NOTE: Last setting will be stored after the unit is turned OFF with the remote controller . Indoor unit receives the signal of the remote controller with beeps. Operation Indicator lamp The operation indicator at the [...]

11 8-1. COOL ( ) OPERA TION (1) Press OPERA TE/ST OP (ON/OFF) button. OPERA TION INDICA TOR lamp of the indoor unit turns ON with a beep tone. (2) Select COOL mode with OPERA TION SELECT button. (3) Press TEMPERA TURE buttons (TOO W ARM or TOO COOL button) to select the desired temperature. The setting range is 61 ~ 88°F (16 ~ 31°C). 1. Coil fros[...]

12 (4) The initial set temperature is decided by the initial room temperature. Initial room temperature Model Initial set temperature 79°F (26°C) or more COOL mode of "I FEEL CONTROL" 75°F (24°C) 77 to 79°F (25 to 26°C) Initial room temperature minus 4°F (2°C) Less than 79°F (25°C) DRY mode of "I FEEL CONTROL" Initial [...]

13 8-7. AUTO V ANE OPERA TION 1. Horizontal vane (1) V ane 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 pres[...]

14 ( 10 ) ECONO COOL ( ) operation (ECONOmical operation) When ECONO COOL button is pressed in COOL mode, set temperature is automatically set 4°F(2°C) higher . Also the horizontal vane swings in various cycle. SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher , the air conditioner can keep [...]

15 8-9. SMART SET ( ) OPERA TION 1. How to SET SMART SET operation (1) Press OPERA TE/ST OP (ON/OFF) button. (2) Select COOL, HEA T (MSZ) or ECONO COOL mode. (3) Press SMART SET button. (4) Set the temperature, fan speed, and air fl ow direction for SMART SET operation. NOTE: • SMART SET operation cannot be selected during DRY or AUTO mode opera[...]

16 MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA 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. T ake care of the following during servicing 1) Before servicing th[...]

17 9-2. F AILURE 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. 1. Flow chart of failure mode recall function for the indoor/outdoor un[...]

18 2. Indoor unit failure mode table Upper lamp of OP- ERA TION INDICA- TOR lamp Abnormal point (Failure mode) Condition Remedy Not lighted Normal — — 1-time fl ash every 0.5-second Room temperature thermistor The room temperature thermistor short or open circuit is detected every 8 seconds dur- ing operation. Refer to the characteristics of t[...]

19 9-3. INSTRUCTION OF TROUBLESHOOTING Indoor unit oper- ates. Outdoor unit does not operate. If blinking of OPERA TION INDI- CA T OR lamp cannot be checked, it can be checked with failure mode recall function. Indoor unit operates. Outdoor unit does not operate normally . Indoor unit does not receive the signal from re- mote controller . OPERA TIO[...]

20 9-4. TROUBLESHOOTING CHECK T ABLE Before taking measures, make sure that the symptom reappears for accurate troubleshooting. When the indoor unit has started operation and detected an abnormality of the following condition (the first detection after th e power ON), the indoor fan motor turns OFF and OPERA TION INDICA TOR lamp flashes. OPERA TION[...]

21 OPERA TION INDICA TOR No. Abnormal point Operation indicator lamp Symptom Condition Remedy 1 MXZ type Operation mode setting Upper lamp lights and lower lamp fl ashes. 2.5-second OFF Outdoor unit operates but indoor unit does not operate. The operation mode of the each indoor unit is differently set to COOL (includes DRY) and HEA T at the same [...]

22 A Check of indoor fan motor 9-6. TROUBLESHOOTING FLOW The indoor fan motor error has occurred, and the indoor fan does not operate. T urn OFF the power supply . Is there any foreign matter that interferes the rotation of the line fl ow fan? Ye s No Remove the foreign matter and adjust the line fl ow fan. Pay enough attention to the high voltag[...]

23 B Check of remote controller and indoor electronic control P .C. board Check if the remote controller is exclusive for this air conditioner . Does the unit operate with the remote controller? OK Ye s No (Not clear) Replace the batteries. (Refer to 9-1.4.) Press OPERA TE/STOP (ON/OFF) button on the remote controller . Is LCD display on the remote[...]

24 C Check of indoor P .C. board and indoor fan motor T urn OFF the power supply . Remove indoor fan motor connector CN21 1 from indoor power P .C. board and vane motor connector CN151 from the indoor electronic control P .C. board and turn ON the power supply . Does the unit operate with the remote controller? Does OPERA TION INDICA TOR lamp light[...]

25 25 D How to check miswiring and serial signal error T urn OFF inverter-controlled lighting equipment. T urn OFF the power supply and then turn ON again. Press EMERGENCY OPERA TION switch. • • • A Is serial signal error indicated 6 minutes later? B Ye s Reinstall either the unit or the light away from each other . Attach a fi lter on remot[...]

26 E Electromagnetic noise enters into TV sets or radios Ye s Is the unit grounded? No Ground the unit. Ye s Is the distance between the antennas and the indoor unit within 9.91 ft., or is the distance between the antennas and the outdoor unit within 9.91 ft.? No Extend the distance between the antennas and the indoor unit, and/or the antennas and [...]

27 1. Indoor power P .C. board, Indoor terminal P .C. board 9-7. T est point diagram and voltage Indoor terminal P .C. board Indoor power P .C. board Please replace the fuse after removing the indoor terminal P .C. board from the electrical box. Fuse (F1 1)( ) V aristor (NR1 1) T erminal block Connector to indoor electronic control P .C. board (CN2[...]

28 MSZ-GE06NA MSZ-GE09NA MSZ-GE12NA MSZ-GE15NA MSZ-GE18NA MSY -GE09NA MSY -GE12NA MSY -GE15NA MSY -GE18NA NOTE: Turn OFF power supply before disassembling. OPERA TING PROCEDURE PHOTOS 1. Removing the panel (1) Remove the horizontal vanes. (2) Remove the screw caps of the panel. Remove the screws of the panel. (3) Unhook the lower part ( ) of the pa[...]

29 OPERA TING PROCEDURE PHOTOS 2. Removing the indoor electronic control P .C. board and the room temperature thermistor (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the screw of the V .A. clamp and the V .A. clamp. (3) Remove the screw of the electrical cover and the electrical cover . (4) Remove the screw of conduit cover and[...]

30 OPERA TING PROCEDURE PHOTOS 4. Removing the nozzle assembly (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor/outdoor connecting wire (Refer to 2 (2)-(5).). (3) Remove the indoor electronic control P .C. board hold- er . (4) Pull out the drain hose from the nozzle assembly and remove the nozzle assembly . Photo 4 5. Re[...]

31 OPERA TING PROCEDURE PHOTOS 6. Removing the indoor fan motor , the indoor coil thermistor , and the line flow fan (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor electronic control P .C. board hold- er , the electrical box and the nozzle assembly . (3) Remove the screws fixing the motor bed. (4) Loosen the screw fixi[...]

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAP AN © Copyright 2009 MITSUBISHI ELECTRIC CO.,L TD Distributed in Jul. 2009. No. OBH548 5 Made in Japan New publication, effective Jul. 2009 Specifications subject to change without notice. TM[...]