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CYB (Ceiling Cassette) RYB (Concealed Ducted) UYB (Floor-Ceiling, Flexmount) FYB (Floor Console) DC INVERTER Split Heat Pumps Service Manual 2014 LISAS-B-1403...
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Part 1 General Information ...................... 1 Part 2 Indoor Units ........................5 Part 3 Outdoor Units ....................... 60 Part 4 Installation ........................71 Part 5 Electrical Control System ..................103 ※The specifications, designs, and information in this book are subject to change without notice for product improvement.
Page 3: Table Of Contents

General Information Part 1 General Information 1. Model Lists ....................2 2. External Appearance ................. 3 2.1 Indoor Units ......................3 2.2 Outdoor Units ......................3 3. Features ...................... 4 General Information...
Page 4: Model Lists

Model Lists 1. Model Lists 1.1 Indoor Units R410A (capacity multiplied by 1000 Btu/h) Type Function ● 4-way cassette (CB) Cooling and heating ● ● ● ● ● Duct (RB) Cooling and heating ● ● ● ● ● Ceiling-floor (UB) Cooling and heating ●...
Page 5: External Appearance

External Appearance 2. External Appearance 2.1 Indoor Units 4-way cassette (12K, 18K) - CB 4-way cassette (24K~48K) - CB Concealed Duct - RB Floor Console - FB Ceiling-Floor (24K~48K) - UB Ceiling-Floor (12K, 18K) - UB 2.2 Outdoor Units Single fan outdoor unit Double fan outdoor unit General Information...
Page 6: Features

Features Features 4.1. Low ambient kit is standard for outdoor units 4.2. Network control function is standard for the indoor units. 4.3. Standard auto restart function and follow me function. 4.4. Slim cassette with standard remote controller, wire controller and CCM for optional. Med Duct and HESP duct with standard wired controller, remote controller and CCM for optional.
Page 7: Part 2 Indoor Units

Indoor Units Part 2 Indoor Units 4-way Cassette Type ............6 Duct Type ................. 22 Ceiling & Floor Type ............37 Console Type ..............49 Indoor Units...
Page 8: Way Cassette Type

Indoor Units 4-way Cassette Type 1. Features (12K, 18K) ............7 2. Features (24K,36K) ............9 3. Dimensions ..............14 4. Service Space ..............16 5. Wiring Diagrams ............. 17 6. Electric Characteristics ..........18 ...
Page 9: Features (12k, 18k)

Features (12K, 18K) 1. Features (12K, 18K) 1.1 New panel  360°surrounding air outlet design, affords comfortable feeling 1.2 Compact design  The body size is 570×260×570mm, it’s just smaller than the ceiling board, so it’s very easy for installation and will not damage the decoration. The panel size is 647×50×647mm. ...
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Features (12K, 18K) Indoor Units...
Page 11: Features (24k,36k)

Features (24K,36K) Features (24K,36K 2.1 Overview  Compact design, super slim body size, less space requiring in installation  Each louver can be separately controlled, more comfort air blowing is possible.  Auto-lifting panel design, more convenient to clean and maintain the filter.(optional) Old Cassette New slim cassette Volume change...
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Features (24K,36K) New air-intake 2.3 Optional ionizer generator  Ionizer generator is optional to get refreshing air to your room.  Ionizer can be switched on or off by remote controller. When pressing the Clean Air button on the remote controller, Ionizer will work and the indicator light on display board will shine.
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Features (24K,36K) 2.4 External air duct design  Reserve external air duct, more flexible for the air supply. 2.5 Built-in draining pump Due to the improvement of structure, more convenient to repair or replace the draining pump.  Draining Pump ...
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Features (24K,36K) Terminals for alarm lamp and long-distance on-off controller connection are standard  Reserve terminals for the connection of alarm lamp and long-distance on-off controller, more human control. Alarm lamp Long-distance on-off controller 2.7 Optional touch screen wired controller ...
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Features (24K,36K) Indoor Units...
Page 16: Dimensions

Dimensions 3. Dimensions 12K, 18K Drain hole Gas side ( for Service ) Liquid side Body 4-install hanger 150 Distribution duct E-parts box 4-Screw hole (for install panel) Drain pipe Fresh air intake Wiring connection port Panel Indoor Units...
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Dimensions 24K,36K,48K 92 92 Fresh air intake 4-install hanger Body Gas side Liquid side Wiring connection port E-parts box Service hole for Test mouth & Test cover draining pump Drain hole 92 92 92 92 Panel Unit:mm Model Indoor Units...
Page 18: Service Space

Service Space 4. Service Space Indoor Units...
Page 19: Wiring Diagrams

Wiring Diagrams 5. Wiring Diagrams CB012GMFI16MLD CB018GMFI16MLD CB024GMFI16MLD CB036GMFI16MLD CB048GMFI16MLD Indoor Units...
Page 20: Electric Characteristics

Sound Levels Electric Characteristics Indoor Unit Model Voltage CB012GMFI16LMD 208-230V 187V 253V CB018GMFI16LMD 208-230V 187V 253V CB024GMFI16LMD 208-230V 187V 253V CB036GMFI16LMD 208-230V 187V 253V CB048GMFI16LMD 208-230V 187V 253V Sound Levels 1.4m Microphone Noise level dB(A) Model CB012GMFI16LMD 40.5 CB018GMFI16LMD 40.5 CB024GMFI16LMD CB036GMFI16LMD CB048GMFI16LMD...
Page 21: Accessories

Accessories Accessories Name Shape Quantity 1. Expansible hook Installation fittings 2. Installation hook 3. Installation paper board 4. Out-let pipe sheath 5. Out-let pipe clasp Drainpipe Fittings 6. Tightening band 7. Drain joint 8. Remote controller Remote controller & Its 9.
Page 22: The Specification Of Power

The Specification of Power 8. The Specification of Power CB012GMFI16MLD Model CB018GMFI16MLD Phase 1-phase Power Frequency and Voltage 208-230V, 60Hz Circuit Breaker/ Fuse (A) 20/16 Indoor Unit Power Wiring (mm Ground Wiring 2.0 (AWG14) Outdoor Unit Power Wiring 3×2.0 (AWG14) Indoor/Outdoor Connecting Wiring Line Voltage Electric Signal...
Page 23: Field Wiring

Field Wiring 9. Field Wiring CB012GMFI16MLD, CB018GMFI16MLD CB024GMFI16MLD, CB036GMFI16MLD, CB048GMFI16MLD Indoor Units...
Page 24: Duct Type

Duct Type Duct Type 1. Features ..............23 2. Dimensions ............. 26 3. Service Space ............27 4. Wiring Diagrams ............ 28 5. Static Pressure ............30 6. Electric Characteristics ......... 32 7. Sound Level ............33 ...
Page 25: Features

Features Features 1.1 Installation accessories: (Optional)  Front Board, Canvas Air Passage, Filter, Panel, for easy installation Panel 1.2 Easy Installation: Two air inlet styles (Bottom side or Rear side)  Air inlet from rear is standard for all capacity; air inlet from bottom is optional. ...
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Features  Replace the motor or centrifugal fan Remove the ventilated panel firstly. Remove a half of blower housing and take out the motor with centrifugal fan. Directly remove two bolts, and then replace the motor or centrifugal fan easily. Motor Blower Housing Ventilated Panel...
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Features 1.7 Built-in display board  The standard indoor unit can be controlled by wired controller.  There is a display board with a receiver in the E-box. Move out the display, and fix it in other place, even in the distance of 10m. The unit will realized remoter control. ...
Page 28: Dimensions

Dimensions Dimensions air inlet from rear side Air filter ( optional ) 4-install hanger Liquid side 25 Drain pipe Gas side 25 Drain pipe Test mouth & Test cover 25 Drain connecting pipe ( for pump ) Electric control box Fresh air intake Air filter ( optional ) air inlet from bottom side...
Page 29: Service Space

Service Space Service Space Ensure enough space required for installation and maintenance. All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following: Indoor Units...
Page 30: Wiring Diagrams

Wiring Diagrams Wiring Diagrams RB012GMFI16MLD RB018GMFI16MLD RB024GMFI16MLD RB036GMFI16MLD RB048GMFI16MLD Indoor Units...
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Wiring Diagrams Indoor Units...
Page 32: Static Pressure

Static Pressure Static Pressure 12,000Btu/h 18,000Btu/h Super high speed High speed Super high speed Mid speed High speed Mid speed Low speed Low speed 600 700 800 900 1000 1100 1200 Air volume(m /h) Air volume(m /h) 24,000Btu/h 36,000Btu/h Super high speed Super high speed High speed High speed...
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Metric to Imperial Conversion: 48,000Btu/h Super high speed High speed Mid speed Low speed 1000 1300 1600 1900 2200 2500 2800 3100 Air volume(m /h) Metric to Imperial Conversion: Every 10 Pa (Pascal) pressure is equivalent to 0.04 Inches of water column Every 100 m3/h air flow is equivalent to 69 CFM.
Page 34: Electric Characteristics

Electric Characteristics Electric Characteristics Indoor Unit Model Voltage Min. Max. RB012GMFI16LMD 208-230V 187V 253V RB018GMFI16LMD 208-230V 187V 253V RB024GMFI16LMD 208-230V 187V 253V RB036GMFI16LMD 208-230V 187V 253V RB048GMFI16LMD 208-230V 187V 253V Indoor Units...
Page 35: Sound Level

Sound Level 6. Sound Level Concealed Duct Type Discharge Suction Duct Duct 1.4m Microphone Noise level dB(A) Model RB012GMFI16LMD RB018GMFI16LMD RB024GMFI16LMD RB036GMFI16LMD RB048GMFI16LMD Indoor Units...
Page 36: Accessories

Accessories 7. Accessories Name Shape Quantity Soundproof / insulation sheath Tubing & Fittings Binding tape Seal sponge Drain joint Drainpipe Fittings (for cooling & heating) Seal ring Wired controller & Its Frame Wired controller ， Owner s manual Others Installation manual Magnetic ring (twist the electric wires L EMS &...
Page 37: The Specification Of Power

The Specification of Power The Specification of Power RB012GMFI16MLD Model RB018GMFI16MLD Phase 1-phase Power Frequency and Voltage 208-230V, 60Hz Circuit Breaker/ Fuse (A) 20/16 Indoor Unit Power Wiring (mm Ground Wiring 2.0 (AWG14) Outdoor Unit Power Wiring 3×2.0 (AWG14) Indoor/Outdoor Connecting Wiring Strong Electric Signal 4×1.5 (AWG16)
Page 38: Field Wiring

Field Wiring Field Wiring RB012GMFI16MLD, RB018GMFI16MLD RB024GMFI16MLD, RB036GMFI16MLD, RB048GMFI16MLD Indoor Units...
Page 39: Ceiling & Floor Type

Ceiling & Floor Type Ceiling & Floor Type 1. Features ............... 38 2. Dimensions ..............40 3. Service Space .............. 43 4. Wiring Diagrams ............44 5. Electric Characteristics ..........46 6. Sound Levels ............... 46 ...
Page 40: Features

Features 1. Features 12K, 18K 1.1 Two-way installation  The rounded design of the ceiling and floor type air conditioner allows either ceiling or floor-level installation. Ceiling installation saves room space, while floor installation helps prevent the loss of warm air.
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Features 1.4 Optional drainage pipe connection Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe  installation. Make you more convenient during installation. 1.5 Five panels for optional Standard Panel A Panel B Panel (LED display) C Panel (LED display) D Panel...
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Features 24K,36K 1.1. New design, more modern and elegant appearance. 1.2. Convenient installation --The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow --It is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting.
Page 43: Dimensions

Dimensions 2. Dimensions 12K, 18K Refrigerant pipe hole (optional) Hanging arm (Ceiling Installation) £ ¨ f or ceiling) (Floor Installation) Hanging arm £ ¨ f or Floor £ © Refrigerant pipe hole (optional) Capacity (KBtu/h) 12~18 Indoor Units...
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Dimensions 24K~48K Wiring connection port Drain discharge port Fresh air intake Refrigerant pipe hole Hanging arm Capacity (Btu/h) 1068 1285 1200 1650 1565 Indoor Units...
Page 45: Service Space

Service Space 3. Service Space 12K,18K ¡ Ý 3 5mm ¡ Ý 1 000mm 24K~48K Indoor Units...
Page 46: Wiring Diagrams

Wiring Diagrams 4. Wiring Diagrams UB012GMFI16MLD UB018GMFI16MLD Indoor Units...
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Wiring Diagrams UB024GMFI16MLD UB036GMFI16MLD UB048GMFI16MLD Indoor Units...
Page 48: Electric Characteristics

Electric Characteristics 5. Electric Characteristics Indoor Units Model Voltage Min. Max. UB012GMFI16LMD 208-230V 187V 253V UB018GMFI16LMD 208-230V 187V 253V UB024GMFI16LMD 208-230V 187V 253V UB036GMFI16LMD 208-230V 187V 253V UB048GMFI16LMD 208-230V 187V 253V 6. Sound Levels Microphone 1.5m Air outlet side Microphone Ceiling Floor Noise level dB(A)
Page 49: Accessories

Accessories 7. Accessories 1. Remote controller Remote controller & Its 2. Remote controller holder holder 3. Mounting screw (ST2.9×10-C-H) 4. Alkaline dry batteries (AM4) 5. Owner's manual Others 6. Installation manual 7. Remote controller manual 8. The Specification of Power UB012GMFI16MLD Model UB018GMFI16MLD...
Page 50: Field Wiring

Ceiling & Floor Type 9. Field Wiring UB018GMFI16MLD UB012GMFI16MLD UB024GMFI16MLD, UB036GMFI16MLD, UB048GMFI16MLD Indoor Units...
Page 51: Console Type

Field Wiring Console Type 1. Features ..............51 2. Dimensions ............. 53 3. Service Space ............54 4. Wiring Diagrams ............ 55 5. Electric Characteristics ......... 56 6. Sound Levels ............57 7. Accessories ............58 ...
Page 53: Features

Features 1. Features 1.1. Modern and elegant appearance  The simple and stylish designs can nicely harmonies with your living space. 1.2. Four panels optional 1.3. Two air-outlet ways Cooling mode Quick Cooling To maintain room temp  Air outlet from top and bottom to make quick cooling ------When the A/C is just switched on, or room temp.
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Features 1.4. Four air inlets 1.5. Low noise  DC indoor fan motor, which has five speeds.  Low noise and energy saving.  Advanced centrifugal fan technology makes a fast airflow and reduces the indoor noise lower to 28dB. 1.6.
Page 55: Dimensions

Dimensions 2. Dimensions Hanging arm 16 Drain pipe Unit: mm Indoor Units...
Page 56: Service Space

Service Space 3. Service Space Indoor Units...
Page 57: Wiring Diagrams

Wiring Diagrams 4. Wiring Diagrams FB012GMFI16MLD Indoor Units...
Page 58: Electric Characteristics

Electric Characteristics 5. Electric Characteristics Indoor Unit Model Voltage FB012GMFI16MLD 208-230V 187V 253V Indoor Units...
Page 59: Sound Levels

Sound Levels 6. Sound Levels Microphone 1.5m Noise level dB(A) Model FB012GMFI16MLD 29.5 Indoor Units...
Page 60: Accessories

Accessories 7. Accessories Name Shape Quantity Installation fittings Hook Remote controller Frame Remote controller & Its Frame Mounting screw(ST2.9×10-C-H) Alkaline dry batteries (AM4) Installation manual Others Owner's manual 8. The Specification of Power Model MFAU-12HRFN1-M Phase 1-phase Power Frequency 208-230V, 60Hz Voltage Circuit Breaker/ Fuse (A) 20/16...
Page 61: Field Wiring

Field Wiring 9. Field Wiring MFAU-12HRFN1-M Indoor Units...
Page 62: Part 3 Outdoor Units

Outdoor Units Part 3 Outdoor Units 1. Dimensions ..............61 2. Service Space ............. 63 3. Piping Diagrams ............64 4. Wiring Diagrams ............65 5. Electric Characteristics ..........68 6. Operation Limits ............69 7. Sound Levels .............. 70 Outdoor Units...
Page 63: Dimensions

Dimensions 1. Dimensions Unit：mm Model YN012GMFI16RUD YN018GMFI16RUD YN024GMFI16RUD YN036GMFI16RUD Outdoor Units...
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Dimensions Unit：mm Model YN048GMFI16RUD 1369 Outdoor Units...
Page 65: Service Space

Service Space 2. Service Space (Wall or obstacle) More than 30cm(11.81in) Air inlet More than 60cm More than 30cm (23.62in) (11.81in) Maintain channel More than 60cm Air inlet (23.62in) Air outlet More than 200cm(78.74in) Outdoor Units...
Page 66: Piping Diagrams

Piping Diagrams 3. Piping Diagrams YN012GMFI16RUD YN018GMFI16RUD INDOOR OUTDOOR CHECK VALVE LIQUID SIDE (Heating Model only) 2-WAY VALVE T3 Condenser temp. sensor CAPILIARY TUBE HEAT EXCHANGE HEAT (EVAPORATOR) T4 Ambient T1 Room temp. EXCHANGE temp. sensor sensor (CONDENSER) T2 Evaporator temp.
Page 67: Wiring Diagrams

Wiring Diagrams 4. Wiring Diagrams YN012GMFI16RUD YN018GMFI16RUD Outdoor Units...
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Wiring Diagrams YN024GMFI16RUD Outdoor Units...
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Wiring Diagrams YN036GMFI16RUD YN048GMFI16RUD Outdoor Units...
Page 70: Electric Characteristics

Electric Characteristics 5. Electric Characteristics Power Outdoor Unit Supply Model Voltage Min. Max. YN012GMFI16RUD 208-230V 187V 253V YN018GMFI16RUD 208-230V 187V 253V YN024GMFI16RUD 208-230V 187V 253V YN036GMFI16RUD 208-230V 187V 253V YN048GMFI16RUD 208-230V 187V 253V Note: MFA: Max. Fuse Amps. (A) Outdoor Units...
Page 71: Operation Limits

Operation Limits 6. Operation Limits Temperature Cooling operation Heating operation Drying operation Mode 17℃～32℃ 0℃～30℃ 17℃～32℃ Room temperature (63~90F) (32~86F) (63~90F) 0℃～50℃ -15℃～24℃ 0℃～50℃ Outdoor temperature (32~122F) (5~75F) (32~122F) CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.
Page 72: Sound Levels

Sound Levels 7. Sound Levels Outdoor Unit Microphone 1.0m Note: H= 0.5 × height of outdoor unit Model Noise Level dB(A) YN012GMFI16RUD YN018GMFI16RUD YN024GMFI16RUD 61.5 YN036GMFI16RUD YN048GMFI16RUD Outdoor Units...
Page 73: Part 4 Installation

Installation Part 4 Installation 1. Installation Procedure ............. 72 2. Location selection ............73 3. Indoor unit installation ............ 74 4. Outdoor unit installation (Side Discharge Unit) .... 91 5. Refrigerant pipe installation ........... 92 6. Drainage pipe installation ..........94 7.
Page 74: Installation Procedure

Installation Procedure 1. Installation Procedure Indoor unit installation Outdoor unit installation location selection location selection Indoor unit installation Outdoor unit installation Refrigerant pipe Refrigerant pipe installation and insulation installation and insulation Drainage pipe installation Drainage pipe installation and insulation and insulation Vacuum drying and leakage checking Additional refrigerant charge Insulation the joint part of refrigerant pipe...
Page 75: Location Selection

Location selection 2. Location selection 2.1 Indoor unit location selection  The place shall easily support the indoor unit’s weight.  The place can ensure the indoor unit installation and inspection.  The place can ensure the indoor unit horizontally installed. ...
Page 76: Indoor Unit Installation

Indoor unit installation 3. Indoor unit installation 3.1 Compact cassette indoor unit installation 3.1.1 Service space for indoor unit 3.1.2 Bolt pitch 3.1.3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling.
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Indoor unit installation Face the concave side of the installation hooks toward the expansible hooks. Determine the length of the installation hooks from the height of ceiling, then cut off the unnecessary part. If the ceiling is extremely high, please determine the length of the installation hook depending on the real situation.
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Indoor unit installation 3.1.5 Install the panel Remove the grille Hang the panel to the hooks on the mainbody. Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water. Hang the air-in grill to the panel, then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively.
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Indoor unit installation 3.2 Super slim cassette indoor unit installation 3.2.1 Service space for indoor unit Model Remark >235 R410A and R22 Cooling / Cooling & Heating >275 R410A and R22 Cooling / Cooling & Heating >317 R410A and R22 Cooling / Cooling &...
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Indoor unit installation 3.2.4 Install the main body Make the 4 suspender through the 4 hanger of the main body to suspend it. Adjust the hexangular nuts on the four installation hooks evenly, to ensure the balance of the body. Use a leveling instrument to make sure the levelness of the main body is within ±1°.
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Indoor unit installation Remove the 4 corner covers. Hang the panel to the hooks on the mainbody. If the panel is with auto-lift grille, please watch the ropes lifing the grille, DO NOT make the ropes enwinded or blocked. Tighten the screws under the panel hooks till the panel closely stick on the ceiling to avoid condensate water.
Page 82

Indoor unit installation Hang the air-in grill to the panel, then connect the lead terminator of the swing motor and that of the control box with corresponding terminators on the body respectively. Install the 4 corner covers back. Note: The panel shall be installed after the wiring connected. Installation...
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Indoor unit installation 3.3 A5 duct indoor unit installation 3.3.1 Service space for indoor unit 3.3.2 Bolt pitch Size of outline dimension mounted plug Capacity(KBtu) 18/24 1180 1240 3.3.3 Install the pendant bolt Select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling.
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Indoor unit installation 3.3.4 Install the main body Make the 4 suspender through the 4 hanger of the main body to suspend it. Adjust the hexangular nuts on the four installation hooks evenly, to ensure the balance of the body. Use a leveling instrument to make sure the levelness of the main body is within ±1°.
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Indoor unit installation 3.3.7 Change the air inlet direction ① Take off ventilation panel and flange, cut off the staples at side rail. ② Stick the attached seal sponge as per the indicating place in the following fig, and then change the mounting positions of air return panel and air return flange .
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Indoor unit installation Ceiling & floor indoor unit installation (24K~48K) 3.4.1 Service space for indoor unit 3.4.2 Bolt pitch ① Ceiling installation Capacity (Btu/h) 1200 1565 ② Wall-mounted installation Installation...
Page 87

Indoor unit installation 3.4.3 Install the pendant bolt ① Ceiling installation Select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the expansible hooks (fittings).
Page 88

Indoor unit installation Put the side panels and grilles back. ② Wall-mounted installation Hang the indoor unit by insert the tapping screws into the hanging arms on the main unit. (The bottom of body can touch with floor or suspended, but the body must install vertically.) Installation...
Page 89

Indoor unit installation Ceiling & floor indoor unit installation (12K, 18K) 3.5.1 Service space for indoor unit 3.5.2 Bolt pitch ① Ceiling installation Capacity (Btu/h) 12K,18K ② Floor standing installation Installation...
Page 90

Indoor unit installation 3.5.3 Install the pendant bolt ① Ceiling installation Select the position of installation hooks according to the hook holes positions showed in upper picture. Drill four holes of Ø12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the expansible hooks (fittings).
Page 91

Indoor unit installation Hang the unit on the hanging arm by sliding backward. Securely tighten the mounting bolts on both sides. (some of the models 60 do not do this) For some of the models 60 please securely tighten the mounting bolts on both sides. Then install the side panels and grilles back to the main unit.
Page 92

Indoor unit installation 3.6 Console indoor unit installation 3.6.1 Service space for indoor unit 3.6.2 Install the main body  Fix the hook with tapping screw onto the wall  Hang the indoor unit on the hook. (The bottom of body can touch with floor or suspended, but the body must install vertically.) Installation...
Page 93: Outdoor Unit Installation (side Discharge Unit)

Indoor unit installation 4 Outdoor unit installation (Side Discharge Unit) 4.1 Service space for outdoor unit (Wall or obstacle) More than 30cm(11.81in) Air inlet More than 60cm More than 30cm (23.62in) (11.81in) Maintain channel More than 60cm Air inlet (23.62in) Air outlet More than 200cm(78.74in) 4.2 Bolt pitch...
Page 94: Refrigerant Pipe Installation

Refrigerant pipe installation 5 Refrigerant pipe installation 5.1 Maximum pipe length and height drop Considering the allowable pipe length and height drop to decide the installation position. Make sure the distance and height drop between indoor and outdoor unit not exceeded the date in the following table. Model Max.
Page 95

Refrigerant pipe installation 5.2.10 Set the wall conduit 5.2.11 Set the supporter for the pipe. 5.2.12 Locate the pipe and fix it by supporter  For horizontal refrigerant pipe, the distance between supporters should not be exceed 1m.  For vertical refrigerant pipe, the distance between supporters should not be exceed 1.5m. 5.2.13 Connect the pipe to indoor unit and outdoor unit by using two spanners.
Page 96: Drainage Pipe Installation

Drainage pipe installation 6 Drainage pipe installation Install the drainage pipe as shown below and take measures against condensation. Improperly installation could lead to leakage and eventually wet furniture and belongings. 6.1 Installation principle  Ensure at least 1/100 slope of the drainage pipe Adopt suitable pipe diameter ...
Page 97

Drainage pipe installation 6.2.3 Individual design of drainage pipe system  The drainage pipe of air conditioner shall be installed separately with other sewage pipe, rainwater pipe and drainage pipe in building.  The drainage pipe of the indoor unit with water pump should be apart from the one without water pump. 6.2.4 Supporter gap of drainage pipe ...
Page 98

Drainage pipe installation Indoor unit More than 50mm Plug More than 25mm Water storage pipe 6.2.7 Lifting pipe setting of indoor unit with water pump  The length of lifting pipe should not exceed the pump head of indoor unit water pump. Pump head of big four way cassette: 750mm Pump head of compact four way cassette: 500mm ...
Page 99

Drainage pipe installation 6.3 Drainage test 6.3.1 Water leakage test After finishing the construction of drainage pipe system, fill the pipe with water and keep it for 24 hours to check whether there is leakage at joint section. 6.3.2 Water discharge test Natural drainage mode(the indoor unit with outdoor drainage pump) Infuse above 600ml water through water test hole slowly into the water collector, observe whether the water can discharge through the transparent hard pipe at drainage outlet.
Page 100: Vacuum Drying And Leakage Checking

Vacuum Drying and Leakage Checking 7 Vacuum Drying and Leakage Checking 7.1 Purpose of vacuum drying  Eliminating moisture in system to prevent the phenomena of ice-blockage and copper oxidation. Ice-blockage shall cause abnormal operation of system, while copper oxide shall damage compressor. ...
Page 101: Additional Refrigerant Charge

Additional refrigerant charge 8 Additional refrigerant charge  After the vacuum drying process is carried out, the additional refrigerant charge process needs to be performed. The outdoor unit is factory charged with refrigerant. The additional refrigerant charge volume is decided ...
Page 102: Engineering Of Insulation

Engineering of insulation 9 Engineering of insulation 9.1 Insulation of refrigerant pipe 9.1.1 Operational procedure of refrigerant pipe insulation Cut the suitable pipe → insulation (except joint section) → flare the pipe → piping layout and connection→ vacuum drying → insulate the joint parts 9.1.2 Purpose of refrigerant pipe insulation During operation, temperature of gas pipe and liquid pipe shall be over-heating or over-cooling ...
Page 103: Engineering Of Electrical Wiring

Engineering of electrical wiring 9.2.3 Insulation material selection for drainage pipe  The insulation material should be flame retardant material, the flame retardancy of the material should be selected according to the local law.  Thickness of insulation layer is usually above 10mm. ...
Page 104: Test Operation

Test operation 11 Test operation 11.1 The test operation must be carried out after the entire installation has been completed. 11.2 Please confirm the following points before the test operation.  The indoor unit and outdoor unit are installed properly. ...
Page 105: Part 5 Electrical Control System

Electrical Control System Part 5 Electrical Control System Electrical Control Function ........104 Troubleshooting ............117 Controller ..............145 Electrical Control System...
Page 106

Electrical Control Function 1. Electrical Control Function Definition T1: Indoor room temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil temperature of indoor heat exchanger outlet. T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 1.2 Main Protection 1.2.1 Time delay at restart for compressor.
Page 107

Electrical Control Function 1.3 Operation Modes and Functions 1.3.1 Fan mode ( 1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/med/low/auto. (4) The louver operates same as in cooling mode. (5) Auto fan: For 12-18K units, Plus 24K floor ceiling, cassette and Ducted: High...
Page 108

Electrical Control Function 1.3.2.2 Outdoor fan running rules For YN012GMFI16RUD and YN018GMFI16RUD: High Medium For other models: DC_FAN_HI_SPD_ADD 28℃ 26℃ DC_FAN_MID_SPD_ADD 25℃ 23℃ DC_FAN_MIN_SPD_ADD 22℃ 20℃ DC_FAN_SLOW_SPD_ADD 19℃ 17℃ DC_FAN_SSLOW_SPD_ADD 1.3.2.3 Indoor fan running rules In cooling mode, indoor fan runs all the time and the speed can be selected as high, medium, low and auto. The auto fan: For Console: High...
Page 109

Electrical Control Function For Ceiling-floor (12-24K), Cassette (12-24K), Concealed Ducted (12-24K) High Medium For other units: High Medium 1.3.2.4 Evaporator low temperature T2 protection. For 12K-24K units, ---T2<0℃, the compressor will stop and restart when T2≥5℃. ---0℃≦T2<4℃, the compressor frequency will be limited and decreased to the lower level every 1 minute till off.
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Electrical Control Function 1.3.3 Heating Mode 1.3.2.1 Electronic Expansion Valve (EXV) Control (Excluding YN012GMFI16RUD, YN018GMFI16RUD) 1.EXV will be fully closed when turning on the power. Then EXV will be standby with 300P open and will open to target angle after compressor starts. 2.EXV will close with -160P when compressor stops.
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Electrical Control Function 1.3.3.3 Indoor fan running rules: When the compressor is on, the indoor fan can be set to high/med/low/auto. And the anti-cold wind function has the priority. Auto fan action: For Console T1-Ts-¦ ¤ T Medium High For Ceiling-floor, Compact cassette, Duct (12-24K) T1-Ts+(6-¦...
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Electrical Control Function 1.3.3.4 Defrosting mode： For 12K-18K Units Condition of defrosting: ----T4＞0℃, Defrosting starts when either of the following ①&②: ①The units run with T3＜3℃ for 40 minutes and T3 keeps lower than TCDI℃ for more than 3 minutes. ②:The units run with T3＜3℃...
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Electrical Control Function For 18K units: no longer than 10min Compressor 4-way valve Outdoor fan Indoor fan breeze 10s For 24K & 48K units: Condition of defrosting: Time1 3℃ Time2 Time conditions: time1 Time conditions(Meet the following conditions) 1.Running in heating mode 2.
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Electrical Control Function Condition of entry defrosting: time1+ time2≥40 minutes, When defrosting is end,time1 and time2 are cleared. Condition of ending defrosting: If any one of following items is satisfied, defrosting will stop and the machine will turn to normal heating mode.
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Electrical Control Function 1.3.4 Auto-mode This mode can be chosen with remote controller and the setting temperature can be changed between 17~30℃. In auto mode, the machine will choose cooling, heating or fan-only mode according to ΔT (ΔT =T1-Ts). For 12K-24K units: ΔT=T1-Ts Running mode Cooling...
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Electrical Control Function 1.3.6.4 Timer on/off. The machine will turn on automatically when reaching the setting “on” time, and then turn off automatically when reaching the setting “off” time. 1.3.6.5 Timer off/on. The machine will turn off automatically when reaching the setting “off” time, and then turn on automatically when reaching the setting “on”...
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Electrical Control Function 1.3.9 Drain pump control (For cassette) Adopt the water-level switch to control the action of drain pump. Main action under different condition :( every 5 seconds the system will check the water level one time) 1. When the A/C operates with cooling (including auto cooling), dehumidifying, and forced cooling mode, the pump will start running immediately and continuously, till stop cooling.
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Electrical Control Function For example ,the digital display tube show “2.0”,it means the EXV open angle is 120×4=480p.) Frequency limit Bit7 caused by IGBT radiator Frequency limit Bit6 caused by PFC The display value is hex Frequency limit Bit5 number. For example, caused by T4.
Page 119: Troubleshooting

Troubleshooting 2. Troubleshooting 2.1 Display board 2.1.1 Icon explanation on indoor display board (Super slim cassette 24K~48K). 2.1.2 Icon explanation on indoor display board (Compact cassette 12K~18K). 2.1.3 Icon explanation on indoor display board (Ceiling & Floor,12K~18K) 2.1.4 Icon explanation on indoor display board (Ceiling & Floor,24K~48K) Electrical Control System...
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Troubleshooting 2.1.5 Icon explanation on indoor display board (Ducted) PRE-DEF indicator(cooling and heating type) or fan only indicator(cooling only type) Alarm indicator Timer indicator Infrared signal receiver Operation lamp Display digital tube Temporary button OPERATION TIMER DEF./FAN ALARM MANUAL 2.1.6 Icon explanation on indoor display board (Console) 2.1.7 Display board of auto-lifting panel of 4 way cassette (24K~48K) Electrical Control System...
Page 121

Troubleshooting 2.2 Indoor unit malfunction For Console Malfunction Running lamp Timer lamp Defrosting lamp Open or short circuit of T1 temperature sensor ☆ Open or short circuit of T2 temperature sensor ☆ Communication malfunction between indoor and outdoor ☆ units. Outdoor fan speed has been out of control ☆...
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Troubleshooting For 36K~48K Units Defrosting Alarm Timer Display(digital NO. Malfunction Running lamp lamp lamp lamp tube) Communication malfunction between indoor 1 X X X E1 ☆ and outdoor units. Open or short circuit of T1 temperature 2 X X ...
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Troubleshooting For other models: Display Malfunction or Protection Outdoor EEPROM malfunction Indoor / outdoor units communication error Communication malfunction between IPM board and outdoor main board Open or short circuit of T3 or T4 temperature sensor Voltage protection of compressor PFC module protection (For 36K-48K) Outdoor fan speed has been out of control Top temperature protection of compressor...
Page 124

Troubleshooting 2.4 Solving steps for typical malfunction 2.4.1 For the indoor unit 2.4.1.1 Open or short circuit of temperature sensor Check the connections between temperature Correct the connections. sensor and PCB. Are the connections good? Check the resistance value of the sensor via Appendix 1 Is it normal? Replace indoor or outdoor PCB.
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Troubleshooting 2.4.1.2. Outdoor unit malfunction Electrical Control System...
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Troubleshooting 2.4.1.3. Indoor EEPROM malfunction Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? If the EEPROM chip is welded on PCB, replace the PCB directly. Otherwise, Insert the EEPROM well check whether the EEPROM chip plugged in PCB well?
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Troubleshooting 2.4.1.5. Indoor fan Speed has been out of control. (Only for the units used DC motor) DC motor voltage input and output (control chip is inside the motor) DC motor voltage input and output Color Signal Voltage Vs/Vm 280V~380V Black White 14-17.5V...
Page 128

Troubleshooting 2.4.1.6. Refrigerant Leakage Detection Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Check if T2 sensor is well Is there cool air blowing fixed. Correct the installation or replace T2 sensor. Does out from indoor air outlet? the problem remain again? Is there any leakage? Especially...
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Troubleshooting 2.4.2 For the super-slim cassette with up-down panel 2.4.2.1 Communication error between indoor unit and up-down panel 2.4.2.2 Up-down panel is defective Electrical Control System...
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Troubleshooting 2.4.4 For the outdoor unit 2.4.4.2. E0 malfunction Electrical Control System...
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Troubleshooting 2.4.4.3. E2 malfunction (Only for 12-18K) Electrical Control System...
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Troubleshooting 2.4.4.4. E2 malfunction (For 24-48K) Electrical Control System...
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Troubleshooting 2.4.4.5. E3 malfunction Electrical Control System...
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Troubleshooting 2.4.4.6. E4 malfunction Electrical Control System...
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Troubleshooting 2.4.4.7. E5 malfunction (For single phase units) E5 display Voltage protection Check the voltage of outdoor unit power supply, whether the voltage Check the power supply between L(1) and N is about 220~240VAC Replace the power board, then check whether the system can run normally Check whether the voltage of IPM board P and N is...
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Troubleshooting 2.4.4.8. E6 malfunction (Only for 36K, 48K) Electrical Control System...
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Troubleshooting 2.4.4.9. P0 malfunction P0 display Temperature protection of compressor top Whether compressor Whether the connection is Reconnect and retest. operates? good? Whether refrigerant circulation volume is normal? Whether protector is normal? If Replace the protector. protector is normal,resistance = 0 Charge refrigerant Replace the outdoor main PCB Whether abnormality is the...
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Troubleshooting 2.4.4.10. P1 malfunction (Only for 36K~48K) Electrical Control System...
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Troubleshooting 2.4.4.11. P2 malfunction (Only for 36K~48K) Electrical Control System...
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Troubleshooting 2.4.4.12. P3 malfunction Electrical Control System...
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Troubleshooting 2.4.4.13. P4 malfunction When compressor discharge temperature is higher than 115°C, the unit will stop, and unit runs again when compressor discharge temperature is lower than 90°C. P4 display Temperature protection of compressor discharge Check whether the Check whether the compressor discharge temp.
Page 142

Troubleshooting 2.4.4.14. P5 malfunction When condenser high temp. is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temp. less than 52°C. P5 display High temperature protection of condenser Replace the temperature sensor Check whether the condenser temperature is more than 65°C Check whether the...
Page 143

Troubleshooting 2.4.4.15. P6 malfunction (For single phase units) At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below: Electrical Control System...
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Troubleshooting 2.4.4.16. P7 malfunction P7 display High temperature protection of evaporator Whether the Whether compressor connection is Reconnect and retest operates? good? Check the Check whether the heat resistance value of exchanger is dirty, the air- the sensor via outlet is blocked and the Replace the temperature sensor Appendix 1,Is it indoor fan is running...
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Troubleshooting Appendix 1 Temperature Sensor Resistance Value Table (℃--K) ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm 12.6431 2.35774 0.62973 115.266 108.146 12.0561 2.27249 0.61148 101.517 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.2190 10.000...
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Troubleshooting Appendix 2 Unit: ℃---K Discharge temp. sensor table 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5 57.37 11.79 3.296 406.7 54.89 11.38 3.203 384.3 52.53 10.99 3.113 363.3 50.28 10.61 3.025 343.6 48.14 10.25...
Page 147: Wireless Remote Controller

Controller 3. Controller 3.1Wireless Remote Controller 3.1.1 RG05F2/BGEU1 General Function for wireless remote controller: RG05F2/BGEU1 Model Rated voltage 3.0V(Dry batteries R03/LR03×2) Min voltage for sending signal of CPU 2.4V Effective receiving distance Operation condition F~140 F(--5~60℃) Electrical Control System...
Page 148

Controller Buttons and functions 1. ON/OFF Button: Push this button to start the unit operation. Push the button again to stop the unit operation. 2. MODE: Once pressing, running mode will be selected in the following sequence: AUTO COOL HEAT NOTE: No heating mode for cool only type unit.
Page 149: Wired Remote Controller

Controller 3.2 Wired Remote Controller KJR-12B Name and functions of buttons on the wire controller Mode button: When press this button, the operation mode change as the following sequence: AUTO COOL HEAT Remark: For the cooling only model, the heating mode is skipped. Timer on button: Press this button, timer on function is active.
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Controller Adjust button: Set indoor temperature up. If press and hold on, it will increase at 1degree per 0.5 second. Adjust button: Set indoor temperature down. if press and hold on, it will decrease at 1degree per 0.5 Second. 10. Swing button: First press, start swing function; second press, stop swing. (Match to some model with swing function).
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Controller The wired controller will reset to factory setting with auto mode, auto fan and 24℃ setting temperature when the air conditioner restarts after power failure. And this may cause inconsistent displays on the wired controller and on the air conditioner. You need to readjust the running status through the wired controller.