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58

<MXZ-2F33VF/2F42VF/2F53VF/2F53VFH>

<MXZ-3F53VF/3F68VF/4F72VF>

SW1 on the outdoor control P.C. board

11-4. LOWERING THE OPERATING NOISE OF THE OUTDOOR UNIT

With this function, the operating noise of the outdoor unit can be lowered by reducing the operation load, for example,
during nighttime in COOL mode.
However, note that the cooling and heating capacity may lower if this function is activated.
Changing the setting is required to activate this function. Explain about this function to your customers and ask them
whether they want to use it.

[How to lower the operating noise]
(1) Turn OFF the power supply and make sure that the LED goes off.
(2) Set the "3" switch of SW1 to ON to enable this function. (

MXZ-2F33VF/2F42VF/2F53VF/2F53VFH

)

Set the "5" switch of the SW1 to ON the enable this function. (

MXZ-3F53VF/3F68VF/4F72VF

)

(3) Turn ON the power supply.

SW1 on the outdoor display P.C. board

ON

SW1

ON

5 6

SW1

11-3. HOW TO SET LOW STANDBY POWER MODE
MXZ-3F54VF MXZ-3F68VF MXZ-4F72VF

• Before turning on the power supply, settings for dip switch (SW1) and jumper connector (SC751) are necessary

on the outdoor controller board.
• When connecting the ducted type indoor unit, deactivate low standby power mode.

To activate low standby power mode:

Connect SC751 to CN750.
Set the 2 of SW1 to ON.

To deactivate low standby power mode:

Connect SC751 to CN751.
Set the 2 of SW1 to OFF.

NOTE:

• Units come with low standby power mode activated as factory setting.
• When connecting the ducted type indoor unit, outdoor unit will not work with low standby power mode activated.
• In the event that SC751 is missing, outdoor unit will not work.

SC751

SW1

MODE

CN750

Activated

CN751

Deactivated

OBH790

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Содержание MXZ-2F33VF

Страница 1: ...OBH589 MSZ AP VF Series OBH799 MSZ AP VG Series OBH788 MLZ KP VF Series OBH801 SLZ M FA Series SEZ M DA Series PCA M KA Series OCH659 PEAD M JA L Series HWE16130 CONTENTS 1 TECHNICAL CHANGES 3 2 SAFETY PRECAUTION 3 3 PART NAMES AND FUNCTIONS 13 4 SPECIFICATION 14 5 NOISE CRITERIA CURVES 20 6 OUTLINES AND DIMENSIONS 22 7 WIRING DIAGRAM 25 8 REFRIGERANT SYSTEM DIAGRAM 29 9 PERFORMANCE CURVES 35 10 A...

Страница 2: ...h the refrigerant Do not touch the hot or cold areas in the refrigeration cycle When the repair or the inspection of the circuit needs to be done without turning off the power exercise great caution not to touch the live parts Use the specified refrigerant only Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced o...

Страница 3: ...RW RU FROG DUHDV LQ WKH UHIULJHUDWLQJ F FOH KHQ WKH UHSDLU RU WKH LQVSHFWLRQ RI WKH FLUFXLW QHHGV WR EH GRQH ZLWKRXW WXUQLQJ RII WKH SRZHU H HUFLVH JUHDW FDXWLRQ QRW WR WRXFK WKH OLYH SDUWV Use new refrigerant pipes Q FDVH RI XVLQJ WKH H LVWLQJ SLSHV IRU 5 EH FDUHIXO ZLWK WKH IROORZLQJ Â H VXUH WR FOHDQ WKH SLSHV DQG PDNH VXUH WKDW WKH LQVLGHV RI WKH SLSHV DUH FOHDQ Â KDQJH IODUH QXW WR WKH RQH SU...

Страница 4: ...refrige rant can cause deterioration of refrigerant oil etc Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Use the following tools specifically designed for use with R32 refrigerant The following tools are necessary to use R32 refrigerant Flare tool Electronic refrigerant charging scale Vac...

Страница 5: ...erant leaks and accumulates it may ignite or poisonous gases may be released 11 Do not install the unit in places where refrigerant may build up or places with poor ventilation such as a semi basement or a sunken place in outdoor Refrigerant is heavier than air and inclined to fall away from the leak source 12 Do not use means to accelerate the defrosting process or to clean other than those recom...

Страница 6: ...igeration Equipment Where electrical components are being changed they shall be fit for the purpose and to the correct specification At all times the manufacturer s maintenance and service guidelines shall be followed If in doubt consult the manufacturer s technical department for assistance The following checks shall be applied to installations using flammable refrigerants The charge size is in a...

Страница 7: ...ures shall be used However for flammable refrigerants it is important that best practice is followed since flammability is a considera tion The following procedure shall be adhered to remove refrigerant purge the circuit with inert gas evacuate purge again with inert gas open the circuit by cutting or brazing The refrigerant charge shall be recovered into the correct recovery cylinders For applian...

Страница 8: ...nders ensure that only appropriate refrig erant recovery cylinders are employed Ensure that the correct number of cylinders for holding the total system charge are available All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant i e special cylinders for the recovery of refrigerant Cylinders shall be complete with pressure relief valve and associate...

Страница 9: ...to use a filter dryer If the diameter of the existing pipes is different from the specified diameter refer to technological data materials to confirm if the pipes can be used Perform the airtight test vacuum air purging additional refrigerant charging if necessary and gas leak check Measure the existing pipe thickness and check for damage The existing pipe thickness meets specifica tions and the p...

Страница 10: ... 22 0 24 0 27 0 36 0 Nominal dimensions inch Flare nut dimensions Outside diameter mm Dimension B R32 R410a 36 0mm for indoor unit of RP100 125 and 140 R22 mm Dimension A Dimension B Tools and materials Use R32 tools Can R22 tools be used Can R407C tools be used Can R410a tools be used Gauge manifold Air purge refrigerant charge and operation check Tool exclusive for R32 Charge hose Tool exclusive...

Страница 11: ...s open and in a sufficiently large space with out depressions 2 5 MINIMUM INSTALLATION AREA If you unavoidably install a unit in a space where all four sides are blocked or there are depressions confirm that one of these situations A B or C is satisfied Note These countermeasures are for keeping safety not for specification guarantee A Secure sufficient installation space minimum installation area...

Страница 12: ...e spec nameplate or installation manual For the amount to be added locally refer to the installation manual Install the indoor unit so that the height from the floor to the bottom of the indoor unit is h0 for wall mounted 1 8 m or more for ceiling suspended cassette and ceiling concealed 2 2 m or more There are restrictions in installation height for each model so read the installation manual for ...

Страница 13: ...MXZ 2F53VF MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF Drain socket 1 1 Drain cap 2 Air outlet Drain outlet Air inlet Back and side MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF MXZ 2F33VF MXZ 2F42VF MXZ 2F53VF MXZ 2F53VFH Air inlet Air outlet Drain outlet Piping Drain hose Back and side OBH790 ...

Страница 14: ...O P Total 1 2 3 88 4 40 Compressor Model KVB073FYXMC Output W 470 Current 1 2 A 3 8 Refrigeration oil Model L 0 27 FW68S Fan motor Model RC0J50 FA Current 1 2 A 0 35 Dimensions W x H x D mm 800 x 550 x 285 Weight kg 33 Special remarks Air flow Rated m3 h 1 890 1 938 Sound level Rated dB A 49 50 Fan speed Rated rpm 860 880 Pre charged refrigerant quantity R32 kg 1 0 Max refrigerant quantity R32 kg ...

Страница 15: ...1 2 4 29 5 11 Compressor Model SVB130FBBMT Output W 1 100 Current 1 2 A 3 99 Refrigeration oil Model L 0 35 FW68S Fan motor Model RC0J50 FA Current 1 2 A 0 35 Dimensions W x H x D mm 800 x 550 x 285 Weight kg 37 Special remarks Air flow Rated m3 h 1 704 2 010 Sound level Rated dB A 44 50 Fan speed Rated rpm 780 910 Pre charged refrigerant quantity R32 kg 1 2 Max refrigerant quantity R32 kg 1 2 1 M...

Страница 16: ...2 3 79 4 10 Compressor Model SVB130FBBMT Output W 1 400 Current 1 2 A 6 59 Refrigeration oil Model L 0 35 FW68S Fan motor Model RC0J50 FA Current 1 2 A 0 35 Dimensions W x H x D mm 800 x 550 x 285 Weight kg MXZ 2F53VF 37 MXZ 2F53VFH 38 Special remarks Air flow Rated m3 h 1 962 2 082 Sound level Rated dB A 46 51 Fan speed Rated rpm 890 940 Pre charged refrigerant quantity R32 kg 1 2 Max refrigerant...

Страница 17: ... 4 09 5 00 Compressor Model SVB130FBBM1T Output W 1 400 Current 1 2 A 5 06 Refrigeration oil Model L 0 6 FW68S Fan motor Model SIC 82FX F764 1 Current 1 2 A 0 5 Dimensions W x H x D mm 840 x 710 x 330 Weight kg 57 Special remarks Air flow Rated m3 h 1 860 1 632 Sound level Rated dB A 46 50 Fan speed Rated rpm 600 560 Pre charged refrigerant quantity R32 kg 1 4 Max refrigerant quantity R32 kg 2 4 1...

Страница 18: ...2 3 70 4 50 Compressor Model SVB172FCKM1T Output W 1 800 Current 1 2 A 8 58 Refrigeration oil Model L 0 6 FW68S Fan motor Model SIC 82FX F764 1 Current 1 2 A 0 5 Dimensions W x H x D mm 840 x 710 x 330 Weight kg 57 Special remarks Air flow Rated m3 h 2 124 2 376 Sound level Rated dB A 48 53 Fan speed Rated rpm 650 700 Pre charged refrigerant quantity R32 kg 1 4 Max refrigerant quantity R32 kg 2 4 ...

Страница 19: ... 4 60 Compressor Model SVB172FCKM1T Output W 2 000 Current 1 2 A 6 98 Refrigeration oil Model L 0 6 FW68S Fan motor Model SIC 82FX F764 1 Current 1 2 A 0 5 Dimensions W x H x D mm 840 x 710 x 330 Weight kg 58 Special remarks Air flow Rated m3 h 2 124 2 562 Sound level Rated dB A 48 54 Fan speed Rated rpm 650 740 Pre charged refrigerant quantity R32 kg 1 4 Max refrigerant quantity R32 kg 2 4 1 Meas...

Страница 20: ... NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE Cooling High FUNCTION FAN SPEED Heating High 49 SPL dB A 50 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CE...

Страница 21: ...SPL dB A 50 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE Cooling High FUNCTION FAN SPEED Heating High 48 SPL dB A 53 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC ...

Страница 22: ...22 OUTLINES AND DIMENSIONS 6 MXZ 2F33VF MXZ 2F42VF MXZ 2F53VF MXZ 2F53VFH Unit mm OBH790 ...

Страница 23: ... overhead and both sides free of obstruction 500 or more 100 or more Note Leave front and overhead free of obstruction 100 or more 350 or more 200 or more 500 or more 2 Service space 100 or more 500 or more 350 or more 350 or more 100 or more Service space MXZ 3F54VF MXZ 3F68VF Unit mm OBH790 ...

Страница 24: ... rear overhead and both sides free of obstruction 500 or more 100 or more Note Leave front and overhead free of obstruction 100 or more 350 or more 200 or more 500 or more 2 Service space 100 or more 500 or more 350 or more 350 or more 100 or more Service space MXZ 4F72VF Unit mm OBH790 ...

Страница 25: ...25 WIRING DIAGRAM 7 MXZ 2F33VF E1 ET1 MXZ 2F42VF E1 ET1 MXZ 2F53VF E1 ET1 OBH790 ...

Страница 26: ...26 MXZ 2F53VFH E1 OBH790 ...

Страница 27: ...27 MXZ 3F54VF E1 ET1 MXZ 3F68VF E1 ET1 OBH790 ...

Страница 28: ...28 MXZ 4F72VF E1 ET1 OBH790 ...

Страница 29: ...scharge temperature thermistor RT62 Stop valve with service port Stop valve with service port Sub muffler UNIT mm MXZ 2F33VF UNIT mm inch Outdoor unit union diameter For Indoor unit A Liquid 6 35 1 4 Gas 9 52 3 8 Indoor unit B Liquid 6 35 1 4 Gas 9 52 3 8 MAX REFRIGERANT PIPING LENGTH Piping length each indoor unit a b 15 m Total piping length a b 20 m Bending point for each unit 15 Total bending ...

Страница 30: ...h each indoor unit a b 20 m Total piping length a b 30 m Bending point for each unit 30 Total bending point 20 It is irrelevant which unit is higher a b Outdoor unit Indoor units 15 m 10 m 15 m Max Height difference UNIT mm inch Outdoor unit union diameter For Indoor unit A Liquid 6 35 1 4 Gas 9 52 3 8 Indoor unit B Liquid 6 35 1 4 Gas 9 52 3 8 ADDITIONAL REFRIGERANT CHARGE Outdoor unit precharged...

Страница 31: ...ameter For Indoor unit A Liquid 6 35 1 4 Gas 9 52 3 8 Indoor unit B Liquid 6 35 1 4 Gas 9 52 3 8 Indoor unit C Liquid 6 35 1 4 Gas 9 52 3 8 a b c Outdoor unit Indoor units 15 m 10 m 15 m Max Height difference MAX REFRIGERANT PIPING LENGTH Piping length each indoor unit a b c 25 m Total piping length a b c 50 m Bending point for each unit 25 Total bending point 50 It is irrelevant which unit is hig...

Страница 32: ... m 10 m 15 m Max Height difference MAX REFRIGERANT PIPING LENGTH Piping length each indoor unit a b c 25 m Total piping length a b c 60 m Bending point for each unit 25 Total bending point 60 It is irrelevant which unit is higher ADDITIONAL REFRIGERANT CHARGE Refer to Method of charging refrigerant Outdoor unit precharged g Refrigerant piping length one way 3 unit total 60 m 1 400 0 UNIT mm inch O...

Страница 33: ...ax Height difference UNIT mm inch Outdoor unit union diameter For Indoor unit A Liquid 6 35 1 4 Gas 12 7 1 2 Indoor unit B Liquid 6 35 1 4 Gas 9 52 3 8 Indoor unit C Liquid 6 35 1 4 Gas 9 52 3 8 Indoor unit D Liquid 6 35 1 4 Gas 9 52 3 8 Refrigerant pipe diameter is different according to indoor unit to be connected When using extension pipes refer to the right table When diameter of refrigerant p...

Страница 34: ...of the refrigerant in the system and then recharge the system with the correct amount of refrigerant after the indoor and outdoor units have been relocated 7 Turn off the breaker Remove the pressure gauge and the refrigerant piping Method of Charging refrigerant ŶMXZ 3F54VF 3F68VF 4F72VF Piping Connection Indoor unit number 1 of speci c I U 2 length 0 0 kg kg _ _ _ _ _ _ kg _ _ _ _ _ _ 1 4 kg g k ...

Страница 35: ...e indoor outlet air wet and dry bulb temperature for your reference at service How to measure the indoor air wet and dry bulb temperature difference 1 Attach at least 2 sets of wet and dry bulb thermometers to the indoor air intake as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The thermometers must be attached to the position where air speed i...

Страница 36: ...door intake air Wet bulb temperature C 16 8 4 4 12 16 Capacity correction factors Outdoor intake air Wet bulb temperature ºC 15 20 26 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 0 5 0 4 Outdoor intake air Wet Heating capacity 1 4 12 0 8 18 16 8 4 4 12 16 Outdoor intake air Wet bulb temperature ºC 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 0 5 0 4 Outdoor intake air Wet 1 4 12 0 8 18 26 20 15 Input correction factors Tot...

Страница 37: ...erature C MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 16 8 4 4 12 18 Capacity correction factors Outdoor intake air Wet bulb temperature ºC Heating capacity 15 20 26 1 4 0 5 0 4 12 0 8 16 16 8 4 4 12 18 12 0 8 16 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 1 4 0 5 0 4 Input correction factors Total input Heating 26 20 15 Outdoor intake air Wet bulb temperature ºC 22 class 25 class 60 clas...

Страница 38: ... Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 COOL Total input Frequency Hz HEAT Capacity HEAT Total input Frequency Hz Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 COOL Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 2 5 COOL Total input Frequency Hz HEAT Capacity HEAT Total input Frequency Hz Frequency Hz 0 50 10...

Страница 39: ...5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 COOL Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 2 5 0 50 100 150 1 0 2 0 3 0 4 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input...

Страница 40: ...50 100 150 1 0 2 0 3 0 4 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz MXZ 2F...

Страница 41: ... 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz COOL Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 COOL Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz COOL Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 COOL Total input Frequenc...

Страница 42: ...00 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 COOL Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 2 5 0 50 100 150 1 0 2 0 3 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Fr...

Страница 43: ...50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 2 0 COOL Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total ...

Страница 44: ...1 5 2 0 2 5 0 50 100 150 1 0 2 0 3 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz COOL Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 COOL Total input Frequency...

Страница 45: ...00 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 COOL Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz H...

Страница 46: ...50 0 5 1 0 1 5 2 0 2 5 0 50 100 150 1 0 2 0 3 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz COOL Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 2 0 0 50 100 150 0 5 1 0 1 5 2 0 COOL Total inpu...

Страница 47: ...y Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 COOL Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 2 0 HEAT Total input Frequency Hz HEAT Capacity Frequency Hz 0 50 100 150 0 5 1 0 1 5 0 50 100 150 0 5 1 0 1 5 HEAT Total input Fre...

Страница 48: ...oor unit current A Ambient temperature Ambient humidity Ambient temperature Ambient humidity 50 60 70 50 60 70 C C 48Hz 48Hz 12 11 10 9 8 7 6 15 20 25 30 35 0 6 0 7 0 8 0 9 1 0 1 1 1 2 15 20 25 30 35 1 2 3 4 5 6 Outdoor low pressure MPa Gauge Outdoor unit current A Ambient temperature Ambient humidity Ambient temperature Ambient humidity 50 60 70 50 60 70 C C 48Hz 48Hz 12 11 10 9 8 7 6 15 20 25 30...

Страница 49: ...nt humidity 50 60 70 50 60 70 C C 30Hz 30Hz 13 12 11 10 9 8 7 15 20 25 30 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 15 20 25 30 35 1 2 3 4 5 6 Outdoor low pressure MPa Gauge Outdoor unit current A Ambient temperature Ambient humidity Ambient temperature Ambient humidity 50 60 70 C 50 60 70 C 30Hz 30Hz 13 12 11 10 9 8 7 15 20 25 30 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 15 20 25 30 35 1 2 3 4 5 6 Outdoor low pressure...

Страница 50: ...ity 50 60 70 C 50 60 70 C 30Hz 30Hz 13 12 11 10 9 8 7 15 20 25 30 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 15 20 25 30 35 1 2 3 4 5 6 Outdoor low pressure MPa Gauge Outdoor unit current A Ambient temperature Ambient humidity Ambient temperature Ambient humidity 50 60 70 C 50 60 70 C 30Hz 30Hz 13 12 11 10 9 8 7 15 20 25 30 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 15 20 25 30 35 1 2 3 4 5 6 18 class unit Outdoor low pr...

Страница 51: ...0Hz 40Hz 12 11 10 9 8 7 6 15 20 25 30 35 0 6 0 7 0 8 0 9 1 0 1 1 1 2 15 20 25 30 35 1 2 3 4 5 6 25 class unit 35 class unit Outdoor low pressure MPa Gauge Outdoor unit current A Ambient temperature Ambient humidity Ambient temperature Ambient humidity 50 60 70 C 50 60 70 C 40Hz 40Hz 14 13 12 11 10 9 8 15 20 25 30 35 0 8 0 9 1 0 1 1 1 2 1 3 1 4 15 20 25 30 35 1 2 3 4 5 6 Outdoor low pressure MPa Ga...

Страница 52: ... 60 70 C 30Hz 30Hz 13 12 11 10 9 8 7 15 20 25 30 35 0 7 0 8 0 9 1 0 1 1 1 2 1 3 15 20 25 30 35 1 2 3 4 5 6 42 class unit Outdoor low pressure MPa Gauge Outdoor unit current A Ambient temperature Ambient humidity Ambient temperature Ambient humidity 50 60 70 C 50 60 70 C 30Hz 30Hz 14 13 12 11 10 9 8 15 20 25 30 35 0 8 0 9 1 0 1 1 1 2 1 3 1 4 15 20 25 30 35 1 2 3 4 5 6 50 class unit Outdoor low pres...

Страница 53: ...bulb temperature C Indoor 20 0 14 5 2 1 Outdoor 7 6 15 12 20 0 14 5 Wet bulb temperature C MXZ 2F33VF 15 class unit 25 class unit 20 class unit 22 class unit 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 58Hz Outdoor unit current A 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 58Hz Outdoor unit current A 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 58Hz Outdoor unit current A 0 5 10 15 20 2...

Страница 54: ... A 25 class unit 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 34Hz Outdoor unit current A 35 class unit 42 class unit 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 34Hz Outdoor unit current A 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 34Hz Outdoor unit current A 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 34Hz Outdoor unit current A 50 class unit 15 class unit 20 class unit 22 class ...

Страница 55: ... Ambient temperature 48Hz Outdoor unit current A 22 class unit 25 class unit 35 class unit MXZ 3F68VF MXZ 4F72VF 42 class unit 50 class unit 15 class unit 20 class unit 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 36Hz Outdoor unit current A 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 36Hz Outdoor unit current A 0 5 10 15 20 25 2 3 4 5 6 7 Ambient temperature 36Hz Outdoor unit current A 0 5...

Страница 56: ...stor Cooling Control Protection Capacity code Control MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF Relation between main sensor and actuator Sensor Purpose Actuator Compressor LEV Outdoor fan motor R V coil Defrost heater 1 Discharge temperature thermistor Protection Indoor coil temperature thermistor Cooling Coil frost prevention Heating High pressure protection Defrost thermistor Heating Defrosting Fin temp...

Страница 57: ... your customers and ask them whether they want to use it How to lock the operation mode 1 Turn OFF the power supply and make sure that the LED goes off 2 Set SW1 as shown in the figure below 3 Turn ON the power supply 11 2 LOCKING THE OPERATION MODE OF THE AIR CONDITIONER COOL DRY HEAT SW1 on the outdoor display P C board MXZ 2F33VF 2F42VF 2F53VF 2F53VFH MXZ 3F53VF 3F68VF 4F72VF SW1 on the outdoor...

Страница 58: ...VFH Set the 5 switch of the SW1 to ON the enable this function MXZ 3F53VF 3F68VF 4F72VF 3 Turn ON the power supply SW1 on the outdoor display P C board ON SW1 ON 5 6 SW1 11 3 HOW TO SET LOW STANDBY POWER MODE MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF Before turning on the power supply settings for dip switch SW1 and jumper connector SC751 are necessary on the outdoor controller board When connecting the du...

Страница 59: ...l block Refrigerant pipe Indoor unit B Liquid Gas pipe Indoor unit A Outdoor unit Incorrect wiring Terminal block Indoor unit B Liquid Gas pipe Indoor unit A Outdoor unit Incorrect piping Terminal block Indoor unit B Liquid Gas pipe Indoor unit A Outdoor unit B A B A B A B A B A B A MXZ 2F33VF 2F42VF 2F53VF 2F53VFH SW2 on the outdoor display P C board The record of automatic line correcting can be...

Страница 60: ...perate indoor unit after the auto line correcting is finished Pressing the switch during detection cancels this function Make sure that the valves are open and the pipes are not collapsed or clogged LED indication after cancel LED1 Red Lighted LED indication during detection LED indication after detection LED2 Yellow Lighted LED3 Green Once LED1 Red Lighted LED2 Yellow Lighted LED3 Green Not light...

Страница 61: ... controller and after confirming the horizontal vane is closed turn OFF the breaker and or disconnect the power plug 2 Be sure to turn OFF the power supply before removing the front panel the cabinet the top panel and the P C board 3 When removing the electrical parts be careful of the residual voltage of smoothing capacitor 4 When removing the P C board hold the edge of the board with care NOT to...

Страница 62: ...ATURE buttons to adjust the set temperature to 25 C 1 1 Regardless of normal or abnormal condition 2 short beeps are emitted as the signal is received The outdoor unit is abnormal Check the blinking pattern and make sure that the abnormal point with the table of outdoor unit failure mode recall function 12 2 3 Make sure to check at least 2 consecutive blinking cycles 2 Repair the failure parts The...

Страница 63: ...cooling or the indoor gas pipe temperature exceeds 70ºC during heating Check the refrigerant circuit and the refrigerant amount Check the stop valve 7 time flash Fin temperature 3 times Not lighted The fin temperature exceeds 90ºC during operation Check the around outdoor unit Check the outdoor unit air pas sage P C board temperature 4 times Not lighted The P C board temperature exceeds 80ºC durin...

Страница 64: ...efer to 12 6 Check of outdoor fan motor P C board temperature 4 times Not lighted The P C board temperature exceeds 67 C during operation 8 time flash Outdoor fan motor Lighted Lighted A failure occurs 3 consecutive times within 30 seconds after the fan gets started Refer to 12 6 Check of outdoor fan motor 9 time flash Outdoor control system Lighted 5 times Nonvolatile memory data cannot be read p...

Страница 65: ...erating indoor unit gets warm Refer to 12 6 Check of LEV KHQ KHDWLQJ room does not get warm Refer to 12 6 How to check inverter compressor KHFN PLVSLSLQJ shortage of capacity KHQ FRROLQJ dew drops in the non operating indoor unit Check of mispiping Refer to 12 4 Troubleshooting check table Both LED1 and LED2 are OFF Both LED1 and LED2 are lighting LED1 or LED2 has blinked 12 3 INSTRUCTION OF TROUB...

Страница 66: ...A short or open circuit is detected in the thermistor during operation 5 times Lighted Overcurrent 3 times Not lighted Discharge temperature protection Fin temperature protection P C board temperature protection High pressure protection Replace the inverter P C board Bus bar voltage protection Not lighted Outdoor fan motor 8 times Not lighted Current sensor protection Replace the inverter P C boar...

Страница 67: ...D2 Yellow Abnormal point Condition Remedy Indication Condition No Symptom Outdoor unit operates normally 23 24 Outdoor unit operates Outdoor display P C board Parts side Lighted 8 times Lighted Converter protection A failure is detected in the operation of the converter during operation 22 Check the voltage of power supply Replace the inverter P C board LED1 LED2 ON OFF 2 5 second OFF 2 5 second O...

Страница 68: ...ire between M NET adapter P C board and outdoor control P C board or terminal block 10 Lighted 12 times Zero cross detecting circuit Outdoor power P C board The protection cut out of the zero cross detecting circuit operates 10 consecutive times Replace the outdoor power P C board 11 Lighted 13 times Current sensor A short or open circuit is detected in the input cur rent detection circuit during ...

Страница 69: ... LEV Check refrigerant circuit and refrigerant amount 30 5 times Lighted Cooling high pressure protection The outdoor heat exchanger temperature exceeds 58 C during operation This symptom does not mean any abnormality of the product but check the following points Check if indoor filters are clogged Check if refrigerant is short Check if indoor outdoor unit air circulation is short cycled 31 7 time...

Страница 70: ...2F33VF MXZ 2F42VF MXZ 2F53VF MXZ 2F53VFH MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF 1 59 2 16 0 86 1 06 0 91 1 13 Outdoor fan motor 2 3 W U V 1 WHT RED BLK MXZ 2F33VF 42VF 53VF MXZ 2F53VFH Measure the resistance between lead wires with a tester Part temperature 10 C 40 C Normal Each phase MXZ 2F 12 16 Outdoor fan motor MXZ 3F54VF 3F68VF 4F72VF Refer to 12 6 R V coil Measure the resistance with a tester Part...

Страница 71: ...es No Yes Check the main power supply circuit for proper connections Is there voltage of 220 230 240 V AC in the power supply terminal block Is there voltage of 220 230 240 V AC between LD66B and X64 on the inverter P C board Check the power supply and correct them Replace the outdoor display P C board Replace the inverter P C board Is there voltage of 220 230 240 V AC between LD66A and LD70 on th...

Страница 72: ...supply Turn ON the power supply Does the LED on the outdoor display P C board or the outdoor control P C board repeat quick BLINKING and OFF 2 Replace the indoor electronic control P C board 1 4 2 The LED indicates the status of serial communication Check the communication status Replace the inverter P C board or the outdoor control P C board 3 4 If the trouble sometimes occurs possible causes are...

Страница 73: ...nal block S1 and S2 Confirmation of power voltage Replace the indoor electronic control P C board 2 Be careful of the residual voltage of smoothing capacitor Replace the outdoor control P C board 2 Is there any error of the indoor outdoor connecting wire such as the damage of the wire intermediate connection poor contact to the terminal block Replace the indoor outdoor connecting wire Is serial si...

Страница 74: ...or CN721 Replace the inverter P C board Replace the 4 way valve Replace the R V coil Is there normal resistance to R V coil Refer to 12 5 1 Disconnect the lead wire leading to the compressor 2 3 minutes after turning ON the power supply start EMERGENCY OPERATION in COOL mode Is there voltage of 220 230 240 V AC between pin1 and pin2 at connector CN721 Replace the inverter P C board Replace the 4 w...

Страница 75: ...0 240 V AC between the pin1 and pin3 at connector CNAC Replace the outdoor power P C board Is there normal resistance to R V coil Refer to 12 5 1 Disconnect the lead wire leading to the compressor 2 3 minutes after turning ON the power supply start EMERGENCY OPERATION in HEAT mode Is there voltage of 220 230 240 V AC between pin1 and pin2 at connector CN712 Replace the 4 way valve Replace the outd...

Страница 76: ...25 LEV B MXZ 2F CN791 LEV A CN792 LEV B CN793 LEV C MXZ 3F 4F CN794 LEV D MXZ 4F CN797 LEV R MXZ 3F 4F Is there normal resistance to LEV coil Refer to 12 5 Normal Replace the outdoor control P C board Replace LEV coil When cooling heat exchanger of non operating indoor unit frosts When heating non operating indoor unit gets warm Connector MXZ 2F MXZ 3F 4F CN724 CN725 Inverter P C board Outdoor con...

Страница 77: ...ding resistance between the compressor terminals Is the resistance between each terminal normal Refer to 12 5 Except MXZ 2F Is the input voltage to the outdoor control P C board 370 V or more Reconnect the lead wire of compressor and turn ON the power supply to indoor and outdoor unit 3 minutes later start EMERGENCY OPERATION Replace the compressor Replace the outdoor power P C board IWHU WKH RXWG...

Страница 78: ... 3 minutes after turning ON the power supply start EMERGENCY OPERATION Thermistor Defrost Discharge temperature Fin temperature Ambient temperature Outdoor heat exchanger temperature Symbol RT61 RT62 RT64 RT65 RT68 Connector Pin No CN641 pin1 and pin2 CN641 pin3 and pin4 CN642 pin1 and pin2 CN643 pin1 and pin2 CN644 pin1 and pin3 Inverter P C board Board MXZ 2F33VF 2F42VF 2F53VF MXZ 2F53VFH MXZ 3F...

Страница 79: ...measure the voltage of CN931 Between and Between and Between and Is the resistance of outdoor fan motor normal Refer to 12 5 Does the outdoor fan motor rotate smoothly Does the voltage between each terminal become 5 V DC and 0 V DC repeatedly Replace the outdoor fan motor Replace the inverter P C board or the outdoor control P C board No Yes Yes No Yes No Connector MXZ 2F CN931 CN932 Inverter P C ...

Страница 80: ...pin4 To measure the voltage connect the negative end of the tester to pin4 Voltage between pin4 and pin6 should be measured within 1 minute after the operation starts pin1 pin4 pin5 pin4 pin6 pin4 pin7 pin4 Voltage 15 V DC 325 V DC 1 5 V DC CNF1 pin1 pin4 pin5 pin4 pin6 pin4 Is the voltage of connector CNF1 normal Refer to right table Does the voltage between pin7 and pin4 of connector CNF1 repeat...

Страница 81: ... resistance of HPS after 1 minute has passed since the outdoor unit power supply was turned OFF Check the resistance between each terminal Reconnect CN63H Turn ON the power supply to the indoor and outdoor unit 3 minutes later start EMERGENCY OPERATION Is HPS protection displayed immediately after compressor starts Replace HPS Replace the outdoor control P C board Normal Connector MXZ 3F 4F CN63H ...

Страница 82: ...rigerant circuit Close the stop valve and disconnect the power plug or turn the power sup ply OFF The unit occasionally stops when the stop valve is opened or closed during operation Open the stop valve and start the cooling operation again Yes No The refrigerant gas amount may be 60 or less than the normal amount Identify where the gas is leaking from and fix the leak CAUTION Do not start the ope...

Страница 83: ...644 Smoothing capacitor C61 C62 C63 R V coil CN721 Heater CN722 MXZ 2F53VFH FUSE F701 T3 15AL250V 220 230 240 V AC X64 LD66B 220 230 240 V AC LD61 LD62 220 230 240 V AC CN601 Serial signal A CN601 Serial signal B CN601 CN602 Output to drive outdoor fan motor CN932 LEV A coil CN724 LEV B coil CN725 20 10 0 10 20 30 40 0 10 20 30 40 50 60 70 80 90 100 Temperature C Defrost thermistor RT61 Ambient te...

Страница 84: ... Room A Input Room B Room C Room D LEV 12 V DC pulse wave CN713 Valve coil 220 230 240 V AC Output CN611 Serial signal 12 24 V CN791 LEV Room A CN792 LEV Room B CN794 LEV Room D CN793 LEV Room C V 15 V MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF V Rotate instruction Constant voltage Rotate signal Pulse wave CN621 CN714 Defrost heater 220 230 240 V AC Output Defrost thermistor RT61 CN797 LEV Room R 220 230 24...

Страница 85: ...bar voltage 290 370 V DC CNAC1 220 230 240 V AC Output F2 FUSE T6 3AL250V F1 FUSE T6 3AL250V 220 230 240 V AC Input CNAC2 220 230 240 V AC Output Connect to earth CN152 Signal Transmission From Outdoor Control P C board 5 V DC pulse wave CN171 Fin temperature thermistor RT64 CN151 Signal transmission To Outdoor control P C board 5 V DC pulse wave 15 V 15 V MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF MXZ 2F33...

Страница 86: ...leeve Pull the terminal while pushing the locking lever Hold the sleeve and pull out the terminal slowly The terminal which has the locking mechanism can be detached as shown below There are following 2 types of the terminal with locking mechanism The terminal without locking mechanism can be detached by pulling it out Check the shape of the terminal before detaching Detaching method of the termin...

Страница 87: ...and the cabinet Refer to section1 2 Disconnect the power supply and indoor outdoor connect ing wire and remove the back panel Refer to section1 3 Remove the inverter assembly Refer to section2 4 Remove the R V coil 4 Removing the discharge temperature thermistor defrost thermistor and outdoor heat exchanger temperature thermistor 1 Remove the service panel the top panel and the cabinet Refer to se...

Страница 88: ...r connect ing wire and remove the back panel Refer to section1 3 Remove the inverter assembly Refer to section2 4 Recover gas from the refrigerant circuit NOTE Recover gas from the pipes until the pressure gauge shows 0 kg cm2 0 MPa 5 Detach the brazed part of the suction and the discharge pipe connected with compressor 6 Remove the nuts of compressor legs 7 Remove the compressor 8 Detach the braz...

Страница 89: ...he cabi net 5 Remove the screws of the back panel and remove the back panel Photo 3 89 13 2 MXZ 3F54VF MXZ 3F68VF MXZ 4F72VF NOTE Turn OFF the power supply before disassembly Photo 2 Photo 1 Screws of the top panel Screws of the cabinet Screws of the top panel Screws of the cabinet Screws of the cabinet Screws of the sub panel Photo 3 Screw of the rear guard Screws of the back panel Screws of the ...

Страница 90: ...C board holder and remove the outdoor control P C board holder 8 Remove the screws of the reactor and remove the reac tor 9 Remove the screws of the reactor bed and remove the reactor bed 10 Remove the screws of the heat sink support and remove the heat sink support 11 Remove the screws fixing the outdoor power P C board 12 Disconnect all connectors and lead wires on the outdoor power P C board 90...

Страница 91: ...s 0 kg cm2 0 MPa 5 Disconnect the outdoor control P C board connectors CN712 CNF1 CNTH1 CNTH2 CN63H CN791 CN792 CN793 CN794 MXZ 4F72VF CN797 6 Disconnect the compressor lead wire from the terminal of the compressor U V W 7 Remove the screws of the electrical box assembly and remove the electrical box assembly Photo 4 8 Remove the propeller fan 9 Remove the sound proof felt 1 2 and 3 MXZ 3F54VF NOT...

Страница 92: ...cabinet and the back panel Photo 1 2 3 Gas recovery is not required if the unit is pumped down 3 Remove the electrical parts for removing LEV R Photo 4 8 4 Remove the LEV coils 5 Detach the brazed parts of expansion valves and pipes Photo 11 Photo 12 4 way valve R V coil Brazed parts Expansion valves LEV coils 92 OBH790 ...

Страница 93: ...93 OBH790 ...

Страница 94: ...FFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2018 MITSUBISHI ELECTRIC CORPORATION Published Mar 2018 No OBH790 Made in Japan Specifications are subject to change without notice ...

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