Toshiba MMU-AP0072H2UL Manuals

R410A 4-Way Cassette Type Compact 4-Way Cassette Type Ceiling Type High Wall Type SERVICE MANUAL AIR-CONDITIONER MULTI TYPE INDOOR UNIT 4-Way Cassette Type MMU-AP0072H2UL-1 MMU-AP0072H2UL, MMU-AP0092H2UL, MMU-AP0122H2UL, MMU-AP0152H2UL, MMU-AP0182H2UL, MMU-AP0212H2UL, MMU-AP0242H2UL, MMU-AP0302H2UL, MMU-AP0362H2UL, MMU-AP0422H2UL Compact 4-Way Cassette Type MMU-AP0071MH2UL, MMU-AP0091MH2UL, MMU-AP0121MH2UL, MMU-AP0151MH2UL, MMU-AP0181MH2UL Ceiling Type MMC-AP0181H2UL, MMC-AP0241H2UL, MMC-AP0361H2UL, MMC-AP0421H2UL High Wall Type MMK-AP0073H2UL, MMK-AP0093H2UL, MMK-AP0123H2UL, MMK-AP0153H2UL, MMK-AP0183H2UL, MMK-AP0243H2UL PRINTED IN JAPAN, Mar., 2011 ToMo FILE NO. A10-019 Revision 1 : Feb., 2013 Revision 2 : Sep., 2014 Revision 3 : Oct., 2014 Revision 4 : Jun., 2015 Revision 5 : Apr., 2016 Revision 6 : Jun., 2017 2 CONTENTS SAFETY CAUTION .............................................................................3 1. SPECIFICATIONS .......................................................................8 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) .......................11 3. WIRING DIAGRAM ...................................................................23 4. PARTS RATING.........................................................................27 5. REFRIGERATIN GCYCLE DIAGRAM ......................................29 6. CONTROL OUTLINE ................................................................30 7. APPLIED CONTROL AND FUNCTION ....................................46 8. TROUBLESHOOTING...............................................................77 9. DETACHMENTS........................................................................99 10. P.C. BOARD EXCHANGE PROCEDURES .............................138 11. EXPLODED VIEWS AND PARTS LIST...................................148 3 SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them. The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. [Explanation of indications] ∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet [Explanation of illustrated marks] [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions (Refer to the Parts disassembly diagram (Outdoor unit).) If removing the label during parts replace, stick it as the original. Indication DANGER WARNING CAUTION Explanation Indicates contents assumed that an imminent danger causing a death or serious injury of the repair engineers and the third parties when an incorrect work has been executed. Indicates possibilities assumed that a danger causing a death or serious injury of the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed. Indicates contents assumed that an injury or property damage (∗) may be caused on the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed. Mark Explanation Indicates prohibited items (Forbidden items to do) The sentences near an illustrated mark describe the concrete prohibited contents. Indicates mandatory items (Compulsory items to do) The sentences near an illustrated mark describe the concrete mandatory contents. Indicates cautions (Including danger/warning) The sentences or illustration near or in an illustrated mark describe the concrete cautious contents. Turn off breaker. Execute discharge between terminals. Prohibition Turn “OFF” the breaker before removing the front panel and cabinet, otherwise an electric shock is caused by high voltage resulted in a death or injury. During operation, a high voltage with 400V or higher of circuit (∗) at secondary circuit of the high-voltage transformer is applied. If touching a high voltage with the naked hands or body, an electric shock is caused even if using an electric insulator. ∗ :# For details, refer to the electric wiring diagram. When removing the front panel or cabinet, execute short-circuit and discharge between high-voltage capacitor terminals. If discharge is not executed, an electric shock is caused by high voltage resulted in a death or injury. After turning off the breaker, high voltage also keeps to apply to the high-voltage capacitor. Do not turn on the breaker under condition that the front panel and cabinet are removed. An electric shock is caused by high voltage resulted in a death or injury. DANGER 4 Check ground wires. Prohibition of modification. Use specified parts. Do not bring a child close to the equipment. Insulating measures No fire Refrigerant Assembly/Cabling Before troubleshooting or repair work, check the ground wire is connected to the ground terminals of the main unit, otherwise an electric shock is caused when a leak occurs. If the ground wire is not correctly connected, contact an electric engineer for rework. Do not modify the products. Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. For spare parts, use those specified (∗∗∗∗∗). If unspecified parts are used, a fire or electric shock may be caused. ∗: For details, refer to the parts list. Before troubleshooting or repair work, do not bring a third party (a child, etc.) except the repair engineers close to the equipment. It causes an injury with tools or disassembled parts. Please inform the users so that the third party (a child, etc.) does not approach the equipment. Connect the cut-off lead wires with crimp contact, etc, put the closed end side upward and then apply a water-cut method, otherwise a leak or production of fire is caused at the users’ side. When repairing the refrigerating cycle, take the following measures. 1) Be attentive to fire around the cycle. When using a gas stove, etc, be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire. 2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide poisoning may be caused. 3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the inflammables. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former R22. Do not useany refrigerant different from the onespecified for complement or replacement. Otherwise, abnormally high pressuremay be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body. For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which uses other refrigerant (R22, etc.), never use R410A. If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an injury due to breakage may be caused. Do not charge refrigerant additionally. If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over the specified standard amount is charged and an abnormal high pressure is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury. Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time, never charge the refrigerant over the specified amount. When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other than R410A into the specified refrigerant. If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle resulted in cause of injury due to breakage. After installation work, check the refrigerant gas does not leak. If the refrigerant gas leaks in the room, poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous. Never recover the refrigerant into the outdoor unit. When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as breakage or injury is caused. After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the cabinet or panel does not catch the inner wires. If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at user’s side. WARNING

Notice: Toshiba is committed to continuously improving its products to ensure the highest quality and reliability standards, and to meet local regulations and market requirements. All features and specifications are subject to change without prior notice. Engineering Data Book E13-303 Heat recovery Model name: MMY-MAP_4FT9UL (208/230 V, 60 Hz) MMY-MAP_4FT6UL (460 V, 60 Hz) Heat pump Model name: MMY-MAP_4HT9UL (208/230 V, 60 Hz) MMY-MAP_4HT6UL (460 V, 60 Hz) Contents 1 Safety caution..............................................................................................2 1 System overview .........................................................................................3 1-1. Allocation standard of model name ....................................................................... 3 1-2. Summary of system equipments ........................................................................... 4 2 Equipment selection procedure...................................................................8 2-1. Selection flow chart................................................................................................ 8 2-2. Combination conditions for indoor unit and outdoor unit ....................................... 9 2-3. Cooling/heating capacity characteristics.............................................................. 10 2-4. Operational temperature range............................................................................ 22 3 Refrigerant piping design...........................................................................23 3-1. Free branching system ........................................................................................ 23 3-2. Allowable length/height difference of refrigerant piping....................................... 24 3-3. Selection of refrigerant piping.............................................................................. 26 3-4. Charging requirement with additional refrigerant................................................. 28 4 Wiring Design ............................................................................................29 4-1. General................................................................................................................ 29 4-2. Outdoor unit power supply................................................................................... 29 4-3. Indoor unit power supply...................................................................................... 32 4-4. Design of control wiring ....................................................................................... 33 5 Outdoor unit...............................................................................................35 5-1. Specifications....................................................................................................... 35 5-2. Dimensional drawing ........................................................................................... 55 5-3. Center of gravity .................................................................................................. 63 5-4. Branch header / branch joint................................................................................ 64 5-5. Refrigerant cycle diagram.................................................................................... 70 5-6. Wiring diagram..................................................................................................... 74 5-7. Connecting diagram............................................................................................. 82 5-8. Applied control for outdoor unit............................................................................ 83 5-9. Optional PCB of outdoor unit............................................................................... 86 5-10. Sound pressure level data................................................................................... 94 5-11. FS unit (Flow Selector unit) ................................................................................. 99 6 Indoor unit................................................................................................102 6-1. 4-Way Cassette type ......................................................................................... 102 6-2. Compact 4-Way Cassette type .......................................................................... 126 6-3. Ceiling type........................................................................................................ 137 6-4. High Wall type.................................................................................................... 149 6-5. Medium Static Ducted type................................................................................ 160 6-6. High Static Ducted type ..................................................................................... 177 6-7. Slim Ducted type................................................................................................ 191 Contents Safety caution 2 Safety caution Warnings on refrigerant leakage Check of Concentration Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit. The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its concentration should rise excessively. Suffocation from leakage of R410A is almost non-existent. With the recent increase in the number of high concentration buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effective use of floor space, individual control, energy conservation by curtailing heat and carrying power etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared with conventional individual air conditioners. If a single unit of the multi conditioner system is to be installed in a small room, select a suitable model and installation procedure so that if the refrigerant accidentally leaks out, its concentration does not reach the limit (and in the event of an emergency, measures can be made before injury can occur). In a room where the concentration may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device. The concentration is as given below. Concentration limit Compliance to the local applicable regulations and standards for the concentration limit is required. NOTE 1 : If there are 2 or more refrigerating systems in a single refrigerating device, the amounts of refrigerant should be as charged in each independent device. For the amount of charge in this example: The possible amount of leaked refrigerant gas in rooms A, B and C is 22 lbs (10 kg). The possible amount of leaked refrigerant gas in rooms D, E and F is 33 lbs (15 kg). NOTE 2 : The standards for minimum room volume are as follows. (1) No partition (shaded portion) (2) When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door). (3) If an indoor unit is installed in each partitioned room and the refrigerant piping is interconnected, the smallest room of course becomes the object. But when a mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object. Total amount of refrigerant (lbs (kg)) Min. volume of the indoor unit installed room (ft3 (m3)) ≤ Concentration limit (lbs/ft3 (kg/m3)) Outdoor unit e.g., charged amount ((22 lbs) 10 kg) e.g.,charged amount (33 lbs (15 kg)) Room A Indoor unit Room B Room C Room D Room E Room F Important Outdoor unit Refrigerant piping Indoor unit Outdoor unit Mechanical ventilation device - Gas leak detector Indoor unit Very small room Small room Medium room Large room Refrigerant piping 1 System overview 3 1-1. Allocation standard of model name MMY- M AP ����� F T �� UL UL : USA, Canada Power supply specifications, 9 : 3phase 208/230 V, 60 Hz 6 : 3phase 460 V, 60 Hz T : Inverter Unit F : Heat Recovery, H : Heat Pump Development series number Nominal cooling capacity Refrigerant R410A M : Single module unit, No mark : Combined Model name Modular Multi 1 System overview

1 MMU-AP___2H2UL E15-3C1 6 Indoor unit 4-Way Cassette type Contents 1. Specifications 2. Dimensions 3. Center of gravity 4. Piping diagram 5. Wiring diagram 6. Electrical current characteristics 7. Sensible capacity table 8. Air throw distance chart 9. Sound data 10. Accessories 11. Reference MMU-AP0072H2UL MMU-AP0092H2UL MMU-AP0122H2UL MMU-AP0152H2UL MMU-AP0182H2UL MMU-AP0212H2UL MMU-AP0242H2UL MMU-AP0302H2UL MMU-AP0362H2UL MMU-AP0422H2UL MMU-AP0072H2UL-1 2 MMU-AP___2H2UL E15-3C1 1. Specifications 4-Way Cassette type Note * Figures in parentheses are for ceiling panels. (*1) The actual values in an external operating environment are generally higher than the indicated values due to the contribution from ambient noise. Model name MMU- AP0072H2UL AP0092H2UL AP0122H2UL AP0152H2UL AP0182H2UL AP0212H2UL AP0242H2UL Cooling Capacity kBtu/h 7.5 9.5 12 15.4 18 21 24 Heating Capacity kBtu/h 8.5 10.5 13.5 17 20 24 27 Electrical characteristics Power supply 230 V (208/230 V) 1phase 60 Hz Power consumption kW 0.021 0.021 0.023 0.026 0.026 0.036 0.036 Appearance Main unit Zinc hot dipping steel plate Heat-insulating material attached Ceiling panel Model RBC-U31PG(W)-UL Panel color White (2.5GY9.0/0.5) Dimension (Ceiling panel)* Unit Height In 10.1 (1.2)* 10.1 (1.2)* 10.1 (1.2)* 10.1 (1.2)* 10.1 (1.2)* 10.1 (1.2)* 10.1 (1.2)* Width In 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* Depth In 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* Packing Height In 11.3 (3.9)* 11.3 (3.9)* 11.3 (3.9)* 11.3 (3.9)* 11.3 (3.9)* 11.3 (3.9)* 11.3 (3.9)* Width In 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* Depth In 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* Total weight (Ceiling panel)* Unit lbs 42 (10)* 42 (10)* 46 (10)* 46 (10)* 46 (10)* 48 (10)* 48 (10)* Packed unit lbs 51 (15.5)* 51 (15.5)* 55 (15.5)* 55 (15.5)* 55 (15.5)* 57 (15.5)* 57 (15.5)* Heat exchanger Finned tube Fan unit Fan Turbo fan Standard air flow (High/Mid/Low) cfm 470/430/400 550/490/460 550/480/440 550/480/440 670/540/490 550/480/440 Motor W 60 60 60 60 60 60 60 Air filter Standard filter (Long life filter) Connecting pipe Gas side In 3/8" 3/8" 3/8" 1/2" 1/2" 5/8" 5/8" Liquid side In 1/4" 1/4" 1/4" 1/4" 1/4" 3/8" 3/8" Drain port (Nominal dia.) In VP25 (Polyvinyl chloride tube: External Dia.1-1/4 Internal Dia.1) Sound pressure level (High/Mid/Low) (*1) dB(A) 32.5/30.5/29 34/31.5/29.5 35/33/31 35/33/31 38/33/31 38/33/31 Option parts Spacer for height adjustment TCB-SP1602UUL Air-discharge direction kit TCB-BC1602UUL Fresh-air chamber TCB-GFC1602UUL Fresh Air inlet box TCB-GB1602UUL Auxiliary fresh air flange TCB-FF101URUL 3 MMU-AP___2H2UL E15-3C1 Note * Figures in parentheses are for ceiling panels. (*1) The actual values in an external operating environment are generally higher than the indicated values due to the contribution from ambient noise. Model name MMU- AP0302H2UL AP0362H2UL AP0422H2UL AP0072H2UL-1 Cooling Capacity kBtu/h 30 36 42 7.5 Heating Capacity kBtu/h 34 40 47.5 8.5 Electrical characteristics Power supply 230 V (208/230 V) 1phase 60 Hz Power consumption kW 0.043 0.088 0.112 0.023 Appearance Main unit Zinc hot dipping steel plate Heat-insulating material attached Ceiling panel Model RBC-U31PG(W)-UL Panel color White (2.5GY9.0/0.5) Dimension (Ceiling panel)* Unit Height In 10.1 (1.2)* 12.6 (1.2)* 12.6 (1.2)* 10.1 (1.2)* Width In 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* Depth In 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* 33.1 (37.4)* Packing Height In 11.3 (3.9)* 13.8 (3.9)* 13.8 (3.9)* 11.3 (3.9)* Width In 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* 36.0 (39.8)* Depth In 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* 37.2 (39.8)* Total weight (Ceiling panel)* Unit lbs 48 (10)* 59 (10)* 59 (10)* 46 (10)* Packed unit lbs 57 (15.5)* 69 (15.5)* 69 (15.5)* 55 (15.5)* Heat exchanger Finned tube Fan unit Fan Turbo fan Standard air flow (High/Mid/Low) cfm 730/630/510 1160/840/630 1250/840/670 550/490/460 Motor W 60 150 150 60 Air filter Standard filter (Long life filter) Connecting pipe Gas side In 5/8" 5/8" 5/8" 3/8" Liquid side In 3/8" 3/8" 3/8" 1/4" Drain port (Nominal dia.) In VP25 (Polyvinyl chloride tube: External Dia.1-1/4 Internal Dia.1) Sound pressure level (High/Mid/Low) (*1) dB(A) 41/36.5/34 46/40.5/36.5 48.5/40.5/37.5 34/31.5/29.5 Option parts Spacer for height adjustment TCB-SP1602UUL – Air-discharge direction kit TCB-BC1602UUL – Fresh-air chamber TCB-GFC1602UUL – Fresh Air inlet box TCB-GB1602UUL – Auxiliary fresh air flange TCB-FF101URUL – 4 MMU-AP___2H2UL E15-3C1 2. Dimensions MMU-AP0072H2UL, AP0092H2UL, AP0122H2UL, AP0072H2UL-1 37.4"(950) Panel external dimension 30.7"(780) Hanging bolt pitch 12.7"(323) 45 Hanging bolt 3/8"(M10) (To be procured locally) 10.1"(256) 5.2"(132) 1.2" (30) 0.5" (12) Indoor unit Ceiling panel Ceiling bottom surface Ceiling bottom surface Ceiling panel (Sold separately) Ceiling bottom surface 7.4"(187) 6.1"(155) 1.1" (28.5) 2.4" (61) 1.3" (32) 2.2" (57) Z view 2.5" (64) 37.4"(950) Panel external dimension Z 16.4"(416.5) Drain-up standing-up size 11.8"(300) or less Stand-up 33.5"(850) or less Indoor unit Ceiling bottom surface Stand-up 26.0"(661) or less Drain pipe connecting port 7.4"(189) Ceiling bottom surface Electric parts box 33.1"(840) Unit external dimension 10.6"(269) 16.1"(408) Ceiling bottom surface 4.4" (112) 6.8"(172) 1.7" (42) 2.3" (58) 9.5"(241.5) 1.6" (40) 9.9"(251) 11.1"(281) 12.0"(306) 4.2" (106.5) 2.8" (72) Hole for remote controller wires Conduit hole(Knockout) Ceiling bottom surface Hole for power supply cable Refrigerant pipe connecting port (Liquid) Ø 1/4"(6.4) Refrigerant pipe connecting port (Gas) Ø 3/8"(9.5) Knockout for simple OA For 3.9"(100) 27.2±0.8"(690) Hanging bolt pitch 33.1"(840) Unit external dimension Unit: in (mm) 33.9" to 35.8"(860 to 910) Ceiling open dimension 39.4"(1000) or more 33.9" to 35.8"(860 to 910) Ceiling open dimension Space required for installation 0.6"(15) or more 39.4"(1000) or more 0.6"(15) or more 39.4"(1000) or more 7.9"(200) 7.9"(200) ( 17.7"(450)) ( 17.7"(450)) Check port Check port When a fresh-air inlet box is installed, make check port at the side of the fresh-air inlet box.

R410A 4-Way Cassette Type Compact 4-Way Cassette Type Ceiling Type High Wall Type SERVICE MANUAL AIR-CONDITIONER MULTI TYPE INDOOR UNIT 4-Way Cassette Type MMU-AP0072H2UL, MMU-AP0092H2UL, MMU-AP0122H2UL, MMU-AP0152H2UL, MMU-AP0182H2UL, MMU-AP0212H2UL, MMU-AP0242H2UL, MMU-AP0302H2UL, MMU-AP0362H2UL, MMU-AP0422H2UL Compact 4-Way Cassette Type MMU-AP0071MH2UL, MMU-AP0091MH2UL, MMU-AP0121MH2UL, MMU-AP0151MH2UL, MMU-AP0181MH2UL Ceiling Type MMC-AP0181H2UL, MMC-AP0241H2UL, MMC-AP0361H2UL, MMC-AP0421H2UL High Wall Type MMK-AP0073H2UL, MMK-AP0093H2UL, MMK-AP0123H2UL, MMK-AP0153H2UL, MMK-AP0183H2UL, MMK-AP0243H2UL PRINTED IN JAPAN, Mar., 2011 ToMo FILE NO. A10-019 Revision 1 : Feb., 2013 Revision 2 : Sep., 2014 Revision 3 : Oct., 2014 Revision 4 : Jun., 2015 2 CONTENTS SAFETY CAUTION .............................................................................3 1. SPECIFICATIONS .......................................................................8 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) .......................11 3. WIRING DIAGRAM ...................................................................23 4. PARTS RATING.........................................................................27 5. REFRIGERATIN GCYCLE DIAGRAM ......................................29 6. CONTROL OUTLINE ................................................................30 7. APPLIED CONTROL AND FUNCTION ....................................46 8. TROUBLESHOOTING...............................................................77 9. DETACHMENTS......................................................................104 10. P.C. BOARD EXCHANGE PROCEDURES .............................143 11. EXPLODED VIEWS AND PARTS LIST...................................153 3 SAFETY CAUTION The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them. The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. [Explanation of indications] ∗ Property damage : Enlarged damage concerned to property, furniture, and domestic animal/pet [Explanation of illustrated marks] [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions (Refer to the Parts disassembly diagram (Outdoor unit).) If removing the label during parts replace, stick it as the original. Indication DANGER WARNING CAUTION Explanation Indicates contents assumed that an imminent danger causing a death or serious injury of the repair engineers and the third parties when an incorrect work has been executed. Indicates possibilities assumed that a danger causing a death or serious injury of the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed. Indicates contents assumed that an injury or property damage (∗) may be caused on the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed. Mark Explanation Indicates prohibited items (Forbidden items to do) The sentences near an illustrated mark describe the concrete prohibited contents. Indicates mandatory items (Compulsory items to do) The sentences near an illustrated mark describe the concrete mandatory contents. Indicates cautions (Including danger/warning) The sentences or illustration near or in an illustrated mark describe the concrete cautious contents. Turn off breaker. Execute discharge between terminals. Prohibition Turn “OFF” the breaker before removing the front panel and cabinet, otherwise an electric shock is caused by high voltage resulted in a death or injury. During operation, a high voltage with 400V or higher of circuit (∗) at secondary circuit of the high-voltage transformer is applied. If touching a high voltage with the naked hands or body, an electric shock is caused even if using an electric insulator. ∗ :# For details, refer to the electric wiring diagram. When removing the front panel or cabinet, execute short-circuit and discharge between high-voltage capacitor terminals. If discharge is not executed, an electric shock is caused by high voltage resulted in a death or injury. After turning off the breaker, high voltage also keeps to apply to the high-voltage capacitor. Do not turn on the breaker under condition that the front panel and cabinet are removed. An electric shock is caused by high voltage resulted in a death or injury. DANGER