Page 1 AIR CONDITIONING SYSTEMS MULTI SPLIT UNIT • SERVICE MANUAL MODELS: LV6CI-12WiFiR LV6DI-12WiFiR LV6LI-12WiFiR LV6CI-18WiFiR LV6DI-18WiFiR LV6LI-18WiFiR ENGLISH...
Page 3 Table of Contents §. Safety Precautions Precautions Information servicing §. Model Reference & External Appearance Model Reference External Appearance §. Indoor Unit Indoor Unit - Compact Four-way Cassette Type Indoor Unit - New Four-way Cassette Type Indoor Unit - A6 Duct Type Indoor Unit - Floor Ceiling Type §.
Page 4 Table of Contents §. Troubleshooting Safety Caution General Troubleshooting Information Inquiry Outdoor Unit Point Check Function Error Diagnosis and Troubleshooting Without Error Code Quick Maintenance by Error Code Troubleshooting by Error Code Check Procedures §. Indoor Unit Disassembly Indoor Unit - Compact Four-way Cassette Type Indoor Unit - New Four-way Cassette Type Indoor Unit - A6 Duct Type Indoor Unit - Floor Ceiling Type...
Page 6: Safety Precautions
Safety Precautions Contents Precautions ......................2 Information servicing(For flammable materials) ..........3...
Page 7: In Case Of Accidents Or Emergency
1. Precautions CAUTION To prevent personal injury, or property or unit damage, • • While unpacking be careful of sharp edges around adhere to all precautionary measures and instructions the unit as well as the edges of the fins on the con- denser and evaporator.
Page 8 2. Information servicing(For • Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable flammable materials) hazards or ignition risks. • NO SMOKING signs shall be displayed. Checks to the area Ventilated area •...
Page 9: Detection Of Flammable Refrigerants
• that capacitors are discharged: this shall be done in shall also take into account the effects of aging or a safe manner to avoid possibility of sparking; continual vibration from sources such as compressors or fans. • that there no live electrical components and wiring are exposed while charging, recovering or purging 2.13 Detection of flammable refrigerants the system;...
Page 10: Charging Procedures
• The refrigerant charge shall be recovered into the • Before attempting the procedure ensure that: correct recovery cylinders. The system shall be flushed • mechanical handling equipment is available, if with OFN to render the unit safe. This process may required, for handling refrigerant cylinders;...
Page 11 • Empty recovery cylinders are evacuated and, if • The recovered refrigerant shall be returned to the possible, cooled before recovery occurs. refrigerant supplier in the correct recovery cylinder, and the relevant Waste Transfer Note arranged. Do not • The recovery equipment shall be in good working mix refrigerants in recovery units and especially not in order with a set of instructions concerning the cylinders.
Page 12: Model Reference
Model Reference Contents Model Reference ....................2 External Appearance .....................3...
Page 13 Refer to the following table to determine the specific indoor and outdoor unit model number of your purchased equipment. Note: Check you are using the right power supply for your model. Power Supply Intake : Outdoor Units Capacity Indoor Unit Model Power Supply (Btu/h) Cassette LV6CI-12WiFiR 1Φ, 220-240V~, Duct LV6DI-12WiFiR 50Hz Console LV6LI-12WiFiR Cassette LV6CI-18WiFiR 1Φ, 220-240V~,...
Page 14: External Appearance
2. External Appearance Indoor Unit Compact Four-way Cassette Duct Console  Model Reference ...
Page 15: Table Of Contents
Indoor Unit-Compact Cassette Contents Feature........................2 Dimensional Drawings ..................4 Part names ......................5 Service Place ......................6 Accessories ......................7 Air Velocity and Temperature Distributions ............8 Capacity Tables ....................16 Noise Criterion Curves ..................22 Electrical Characteristics ..................23 Electrical Wiring Diagrams ..................23...
Page 16: Feature
1. Feature 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. • The hooks are designed in the four corners of the body, which can save installation space. Fire-proof Controller Box •...
Page 17: Wired Controller(Optional)
Fresh Air • Fresh air intake function brings you fresh and comfortable air feeling. Wired Controller(Optional) • Compared with infrared remote controller, wired controller can be fixed on the wall and avoid mislaying. It's mainly used for commercial zone and makes air conditioner control more convenient. Louver Position Memory (Standard for ERP models) •...
Page 18: Dimensional Drawings
2. Dimensional Drawings  IDU-Compact Cassette 4 ...
Page 19: Part Names
3. Part names Drain pump (within indoor unit) Drain pipe Air outlet Air inlet Front grille Louver Display panel Refrigerant pipe  IDU-Compact Cassette 5 ...
Page 20: Service Place
4. Service Place  IDU-Compact Cassette 6 ...
Page 21: Accessories
5. Accessories The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to in- stall the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or equipment failure. Name Shape Quantity Installation paper template (some...
Page 22: Air Velocity And Temperature Distributions
6. Air Velocity and Temperature Distributions Discharge Angle 30° Cooling airflow velocity distributions Cooling temperature distributions  IDU-Compact Cassette 8 ...
Page 23 Heating airflow velocity distributions Heating temperature distributions  IDU-Compact Cassette 9 ...
Page 24 Discharge Angle 60° Cooling airflow velocity distributions Cooling temperature distributions  IDU-Compact Cassette 10 ...
Page 25 Heating airflow velocity distributions Heating temperature distributions  IDU-Compact Cassette 11 ...
Page 26 Discharge Angle 30° Cooling airflow velocity distributions Cooling temperature distributions  IDU-Compact Cassette 12 ...
Page 27 Heating airflow velocity distributions Heating temperature distributions  IDU-Compact Cassette 13 ...
Page 28 Discharge Angle 60° Cooling airflow velocity distributions Cooling temperature distributions  IDU-Compact Cassette 14 ...
Page 29 Heating airflow velocity distributions Heating temperature distributions  IDU-Compact Cassette 15 ...
Page 30: Capacity Tables
8. Capacity Tables Cooling ID WB 16.0 18.0 19.0 22.0 INDOOR (℃) OUTDOOR AIRFLOW DB(℃) ID DB (CMH) 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 (℃) 3.71 3.72 3.72 3.75 3.90 3.96 3.96 3.96...
Page 31 3.78 3.78 3.81 3.84 3.96 3.96 3.96 3.96 4.06 4.06 4.06 4.06 4.31 4.31 4.31 4.31 0.70 0.79 0.98 1.00 0.56 0.65 0.73 0.81 0.50 0.58 0.66 0.74 0.35 0.42 0.49 0.57 0.79 0.79 0.79 0.79 0.78 0.78 0.78 0.78 0.78 0.78 0.78...
Page 32 ID WB 16.0 18.0 19.0 22.0 INDOOR (℃) OUTDOOR AIRFLOW DB(℃) ID DB (CMH) 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 (℃) 5.50 5.50 5.50 5.50 5.78 5.90 5.90 5.90 5.93 5.93 5.93 5.93...
Page 33 5.74 5.74 5.74 5.80 6.05 6.05 6.05 6.05 6.20 6.20 6.20 6.20 6.57 6.57 6.57 6.57 0.69 0.77 1.00 1.00 0.56 0.63 0.70 0.98 0.49 0.57 0.64 0.71 0.36 0.42 0.49 0.56 1.24 1.24 1.24 1.24 1.25 1.25 1.25 1.25 1.25 1.25 1.25...
Page 34 Heating [SI_Unit] HEATING PERFORMANCE AT INDOOR DRY BULB TEMPERATURE TC:TOTAL CAPACITY IN KILOWATTS (KW) PI:TOTAL POWER IN KILOWATTS (KW) INDOOR OUTDOOR AIRFLOW (CMH) Indoor Conditions (DB °C ) Indoor Conditions (DB °C ) DB(°C) 16.0 20.0 22.0 24.0 16.0 20.0 22.0 24.0 -15.0...
Page 35 [SI_Unit] HEATING PERFORMANCE AT INDOOR DRY BULB TEMPERATURE TC:TOTAL CAPACITY IN KILOWATTS (KW) PI:TOTAL POWER IN KILOWATTS (KW) INDOOR OUTDOOR AIRFLOW (CMH) Indoor Conditions (DB °C ) Indoor Conditions (DB °C ) DB(°C) 16.0 20.0 22.0 24.0 16.0 20.0 22.0 24.0 -15.0 3.88...
Page 36: Noise Criterion Curves
-Sound level will vary depending on a range of factors such as the construction -(acoustic absorption coefficient) of particular room in which the equipment is installed. -The operating conditions are assumed to be standard. LV6CI-12WiFiR LV6CI-18WiFiR  IDU-Compact Cassette 22...
Page 37: Electrical Characteristics
4×1.0(4x2.5 with auxiliary electric Wiring Strong Electric Signal(mm heater) NOTE: Electric auxiliary heating type circuit breaker/fuse need to add more than 10 A. 11. Electrical Wiring Diagrams IDU Model IDU Wiring Diagram LV6CI-12WiFiR 16022500004023 LV6CI-18WiFiR Abbreviation Paraphrase Yellow-Green Conductor CAP1 Indoor Fan Capacitor...
Page 39: Wiring Diagrams
10.1 Some connectors introduce: A For remote control (ON-OFF) terminal port CN23 and short connector of JR6 1. Remove the short connector of JR6 when you use ON-OFF function; 2. When remote switch off (OPEN) ;the unit would be off; 3.
Page 40 B For ALARM terminal port CN33 1. Provide the terminal port to connect ALARM ,but no voltage of the terminal port , the power from the ALARM system (not from the unit ) 2. Although design voltage can support higher voltage ,but we strongly ask you connect the power less than 24V, current less than 0.5A 3.
Page 41 C. For new fresh motor terminal port CN8 1. Connect the fan motor to the port , no need care L/N of the motor ; 2. The output voltage is the power supply; 3. The fresh motor can not excess 200W or 1A , follow the smaller one ; 4.
Page 42 10.2 Micro-Switch Introduce: A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti-cold wind action in heating mode. Range: 24 C, 15 C, 8 C, According to EEROM setting (reserved for special customizing). B.Micro-switch SW2 is for selection of indoor FAN ACTION if room temperature reaches the setponit and the compressor stops.
Page 43 C.Micro-switch SW3 is for selection of auto-restart function. Range: Active, inactive SWITCH FOR MODE-PRIOR SETTING STATE COOL HEAT MODE HEAT COOL Factory Setting D. Micro-switch SW5 is for setting mode priority of multi connection. Range: Heat, cool. E.Micro-switch SW6 is for selection of temperature compensation in heating mode. This helps to reduce the real temperature difference between ceiling and floor so that the unit could run properly.
Page 44 G.Micro-switch S1 and dial-switch S2 are for address setting when you want to control this unit by a central controller. Range: 00-63 32~35 36~53 54~71 72~90 91~105 106~140 141~160 161~200 H. Dial-switch ENC1: The indoor PCB is universal designed for whole series units from 7K to 68K. This ENC1 setting will tell the main program what size the unit is.
Page 45 Indoor Unit - Duct Contents Feature........................2 Dimensional Drawings ..................4 Part names ......................5 Service Place ......................5 Accessories ......................6 Fan Performance ....................7 Capacity Tables ....................12 Noise Criterion Curves ..................27 Electrical Characteristics ..................29 Electrical Wiring Diagrams ..................29...
Page 46: Feature
1. Feature Eccentric Fan Design New eccentric fan design improves the airflow at the air outlet, resulting better performance. Slim Design The industry lowest height is designed to be fitted into tight roof space. Flexible Air Intake The frame size of air inlet in rear and bottom is the same. It’s very easy to switch to match different applications.
Page 47 Built-in Drain Pump(Optional) The built-in drain pump can lift condensing water up to 750mm. Easy Clean You can pull out the filter from left, right, or from the bottom for easy cleaning.  IDU-A6 Duct 3 ...
Page 48: Dimensional Drawings
2. Dimensional Drawings Model unit (KBtu/h) inch 27.56 7.87 19.92 17.72 5.39 21.14 1.18 5.98 23.58 7.32 1.97 29.17 14.17 3.31 5.51 3.31 3.31 inch 34.65 8.27 26.54 23.62 5.51 27.8 1.97 5.35 30.79 7.48 1.57 36.22 3.07 5.83 3.46 4.41 1100 1001...
Page 49: Part Names
3. Part names Air inlet Electric control box Air lter(on some models) Drain hose Air outlet Refrigerant connecting pipe 4. Service Place Air outlet (30cm) 11.8 (20cm) Air inlet 23.6 x23.6 (60cmx60cm) checking orifice  IDU-A6 Duct 5 ...
Page 50: Accessories
5. Accessories The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to in- stall the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or equipment failure. Name Shape Quantity Soundproof / insulation sheath...
Page 51: Fan Performance
6. Fan Performance  IDU-A6 Duct 7 ...
Page 52  IDU-A6 Duct 8 ...
Page 53: Capacity Tables
7. Capacity Tables Cooling ID WB 16.0 18.0 19.0 22.0 INDOOR (℃) OUTDOOR AIRFLOW DB(℃) ID DB (CMH) 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 (℃) 3.71 3.72 3.72 3.72 3.90 3.96 3.96 3.96...
Page 54 3.78 3.78 3.81 3.84 3.96 3.96 3.96 3.96 4.06 4.06 4.06 4.06 4.31 4.31 4.31 4.31 0.70 0.79 0.98 1.00 0.56 0.65 0.72 0.81 0.50 0.58 0.66 0.73 0.35 0.42 0.49 0.57 0.88 0.88 0.88 0.88 0.87 0.87 0.87 0.87 0.88 0.88 0.88...
Page 55 ID WB 16.0 18.0 19.0 22.0 INDOOR (℃) OUTDOOR AIRFLOW DB(℃) ID DB (CMH) 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 (℃) 5.50 5.50 5.50 5.50 5.78 5.90 5.90 5.90 5.93 5.93 5.93 5.93...
Page 56 5.74 5.80 5.86 5.92 6.05 6.05 6.05 6.11 6.20 6.20 6.20 6.20 6.57 6.57 6.57 6.57 0.75 0.85 1.00 1.00 0.59 0.69 0.79 0.98 0.51 0.61 0.70 0.80 0.33 0.42 0.51 0.61 1.20 1.20 1.20 1.20 1.19 1.19 1.19 1.19 1.19 1.19 1.19...
Page 57 Heating [SI_Unit] HEATING PERFORMANCE AT INDOOR DRY BULB TEMPERATURE TC:TOTAL CAPACITY IN KILOWATTS (KW) PI:TOTAL POWER IN KILOWATTS (KW) INDOOR OUTDOOR AIRFLOW (CMH) Indoor Conditions (DB °C ) Indoor Conditions (DB °C ) DB(°C) 16.0 20.0 22.0 24.0 16.0 20.0 22.0 24.0 -15.0...
Page 58 [SI_Unit] HEATING PERFORMANCE AT INDOOR DRY BULB TEMPERATURE TC:TOTAL CAPACITY IN KILOWATTS (KW) PI:TOTAL POWER IN KILOWATTS (KW) INDOOR OUTDOOR AIRFLOW (CMH) Indoor Conditions (DB °C ) Indoor Conditions (DB °C ) DB(°C) 16.0 20.0 22.0 24.0 16.0 20.0 22.0 24.0 -15.0 3.90...
Page 59: Noise Criterion Curves
8. Noise Criterion Curves Indoor Unit Notes: -Sound measured at 1.5m away from the center of the unit. -Data is valid at free field condition -Data is valid at nominal operation condition -Reference acoustic pressure OdB = 20µPa -Sound level will vary depending on a range of factors such as the construction -(acoustic absorption coefficient) of particular room in which the equipment is installed.
Page 60: Electrical Characteristics
9. Electrical Characteristics Capacity (Btu/h) 12K~18k Phase 1-phase Frequency and 220-240V, 50Hz Voltage OUDOOR UNIT POWER Power Wiring 3×1.5 Circuit Breaker/ 25/20 Fuse (A) Weak Electric Signal)(mm Indoor/Outdoor Connecting 4×1.0(4x2.5 with Strong Electric Wiring auxiliary electric Signal(mm heater) NOTE: Electric auxiliary heating type circuit breaker/fuse need to add more than 10 A. 10.
Page 62: Wiring Diagrams
10.1 Some connectors introduce: A. For new fresh motor terminal port (also for Anion generator) CN43: 1. Connect the fan motor to the port, no need care L/N of the motor; 2. The output voltage is the power supply; 3. The fresh motor can not excess 200W or 1A, follow the smaller one; 4.
Page 63 B For ALARM terminal port CN33 1. Provide the terminal port to connect ALARM, but no voltage of the terminal port, the power from the ALARM system (not from the unit); 2. Although design voltage can support higher voltage, but we strongly ask you connect the power less than 24V, current less than 0.5A;...
Page 64 C. For remote control (ON-OFF) terminal port CN23 and short connector of J7 1. Remove the short connector of J7 when you use ON-OFF function; 2. When remote switch off (OPEN); the unit would be off; 3. When remote switch on (CLOSE); the unit would be on; 4.
Page 65 10.2 Micro-Switch Introduce: FOR ANTI-COLD WIND EEPROM TEL0 DEFAULT FACTORY SETTING A. Micro-switch SW1 is for selection of indoor fan stop temperature (TEL0) when it is in anti-cold wind action in heating mode. Range: 24°C, 15°C, 8°C, according to EEROM setting (reserved for special customizing). FOR SETTING FAN MOTOR CONTROL WHEN THERE IS NO DEMAND MO DE...
Page 66 FOR TEMP. COMPENSATION(HEATING) EEPROM CODE DEFAULT FACTORY SETTING D. Micro-switch SW6 is for selection of temperature compensation in heating mode. This helps to reduce the real temperature difference between ceiling and floor so that the unit could run properly. If the height of installation is lower, smaller value could be chosen.
Page 67 Indoor Unit-Console Contents Feature........................2 Dimensional Drawings ..................4 Part names ......................5 Service Place ......................5 Accessories ......................6 Air Velocity and Temperature Distributions ............8 Capacity Tables ....................10 Noise Criterion Curves ..................16 Electrical Characteristics ..................17 Electrical Wiring Diagrams ..................17...
Page 68: Feature
1. Feature An Elegant And Compact Design • The look of newly-upgraded console unit features flowing lines that is aesthetic enough. • Its unobtrusive design can easily fit into most interiors with different decorating-schemes. • The width of the machine has been reduced by 10mm, taking less space. A Perfect Choice For New Buildings And Renovation Projects •...
Page 69: Air Quality
• Wide Airflow & Constant Comfort-Dual air outlets satisfy both cooling and heating needs in different seasons and allows a quick comfort of the room. *Compared to last generation console unit Air Quality We care your indoor air quality from many perspectives •...
Page 70: Dimensional Drawings
2. Dimensional Drawings  IDU-New Console 4 ...
Page 71: Part Names
3. Part names Air flow louver (at air outlet) Display panel Air inlet (with air filter in it) Refrigerant connecting pipe Air flow louver (at air outlet) Drain hose 4. Service Place ≥100mm ≥1000mm  IDU-New Console 5 ...
Page 72: Accessories
5. Accessories The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to in- stall the air conditioner. Improper installation may result in water leakage, electrical shock and fire, or equipment failure. Name Shape Quantity Remote controller...
Page 73 Transfer connector(Φ12.7-Φ15.9)/(Φ0.5in-Φ0.63in)(Packed with the indoor unit) NOTE: Pipe size may differ from appliance to appliance. To meet different pipe size requirements, sometimes (on some models) the pipe connections need a transfer connector installed on the outdoor unit . Transfer connector(Φ6.35-Φ9.52)/(Φ0.25in-Φ0.37in)(Packed with the indoor unit) NOTE: Pipe size may differ from appliance to appliance.
Page 74: Air Velocity And Temperature Distributions
6. Air Velocity and Temperature Distributions Discharge Angle 70°(Upper)/ 0°(Lower) Cooling airflow velocity distributions Cooling temperature distributions  IDU-New Console 8 ...
Page 75 Discharge Angle 20°(Upper)/ 0°(Lower) Heating airflow velocity distributions Heating temperature distributions  IDU-New Console 9 ...
Page 76: Capacity Tables
7. Capacity Tables Cooling ID WB 16.0 18.0 19.0 22.0 INDOOR (℃) OUTDOOR AIRFLOW DB(℃) ID DB (CMH) 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 (℃) 3.71 3.72 3.75 3.78 3.90 3.96 3.96 3.99...
Page 77 3.78 3.78 3.81 3.84 3.96 3.96 3.96 3.99 4.06 4.06 4.06 4.06 4.31 4.31 4.31 4.31 0.74 0.85 0.98 1.00 0.58 0.69 0.78 0.88 0.51 0.61 0.70 0.79 0.34 0.42 0.51 0.60 0.68 0.68 0.68 0.68 0.68 0.68 0.68 0.68 0.68 0.68 0.68...
Page 78 ID WB 16.0 18.0 19.0 22.0 INDOOR (℃) OUTDOOR AIRFLOW DB(℃) ID DB (CMH) 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 23.0 25.0 27.0 29.0 (℃) 5.24 5.25 5.25 5.31 5.51 5.60 5.60 5.60 5.63 5.63 5.63 5.63...
Page 79 5.44 5.44 5.50 5.56 5.72 5.72 5.72 5.72 5.84 5.84 5.84 5.84 6.22 6.22 6.22 6.22 0.72 0.82 1.00 1.00 0.57 0.67 0.76 0.98 0.50 0.59 0.69 0.77 0.34 0.42 0.50 0.59 1.04 1.04 1.04 1.04 1.04 1.04 1.04 1.04 1.03 1.03 1.03...
Page 80 Heating [SI_Unit] HEATING PERFORMANCE AT INDOOR DRY BULB TEMPERATURE TC:TOTAL CAPACITY IN KILOWATTS (KW) PI:TOTAL POWER IN KILOWATTS (KW) INDOOR OUTDOOR AIRFLOW (CMH) Indoor Conditions (DB °C ) Indoor Conditions (DB °C ) DB(°C) 16.0 20.0 22.0 24.0 16.0 20.0 22.0 24.0 -15.0...
Page 81 [SI_Unit] HEATING PERFORMANCE AT INDOOR DRY BULB TEMPERATURE TC:TOTAL CAPACITY IN KILOWATTS (KW) PI:TOTAL POWER IN KILOWATTS (KW) INDOOR OUTDOOR AIRFLOW (CMH) Indoor Conditions (DB °C ) Indoor Conditions (DB °C ) DB(°C) 16.0 20.0 22.0 24.0 16.0 20.0 22.0 24.0 -15.0 4.30...
Page 82: Noise Criterion Curves
8. Noise Criterion Curves Notes: -Sound measured at 1.5m away from the noisiest location of the unit. -Data is valid at free field condition -Data is valid at nominal operation condition -Reference acoustic pressure OdB = 20µPa -Sound level will vary depending on a range of factors such as the construction -(acoustic absorption coefficient) of particular room in which the equipment is installed.
Page 83: Electrical Characteristics
9. Electrical Characteristics Capacity (Btu/h) Phase 1-phase 1-phase Frequency and Voltage 220-240V, 50Hz 220-240V, 50Hz Oudoor Unit Power Power Wiring (mm 3×1.5 3×2.5 Circuit Breaker/ Fuse (A) 20/16 20/16 Weak Electric Signal)(mm Indoor/Outdoor 4×1.0(4x2.5 with auxiliary 4×1.0(4x2.5 with auxiliary Connecting Wiring Strong Electric Signal(mm electric heater) electric heater)
Page 85: Installation
Installation Contents Installation Overview Location Selection Indoor Unit Installation Outdoor Unit Installation Drainage Pipe Installation Refrigerant Pipe Installation Vacuum Drying and Leakage Checking Additional Refrigerant Charge Engineering of Insulation Engineering of Electrical Wiring Test Operation...
Page 86: Installation Overview
1. Installation Overview Indoor Unit Indoor Unit Install the indoor unit Install the outdoor unit Install the drainpipe Evacuate the refrigeration system Connect the wires Connect the refrigerant pipes Install the panel Perform a test run (only for cassette type) ...
Page 87: Location Selection
2. Location selection 2.1 Unit location selection can refer to installation manual. 2.2 DO NOT install the unit in the following locations: • Where oil drilling or fracking is taking place. • Coastal areas with high salt content in the air. •...
Page 88: Indoor Unit Installation
3. Indoor Unit Installation(Compact Cassette Type 3.1 Service space for indoor unit Suspension bolt pitch dimensions Body dimensions Decoration panel dimensions Refrigerant piping Suspension bolt (×4) Ceiling opening dimensions Hanger bracket Ceiling board 2. Drill 4 holes 5cm (2”) deep at the ceiling hook positions in the internal ceiling.
Page 89 3.3.1 Remove the front grille unit and the four sides of false ceiling are even. The 1. Slide the 2 grille hooks toward the middle of the bottom of the unit should be 24mm / 0.9in higher than decoration panel. ceiling board.
Page 90 3.3.6 Close the front grille, and close the two grille 3.3.3 Mount the grille hooks. Ensure that the buckles at the back of the grille be properly seated in the groove of the panel. 3.3.4 Connect the two wires of the panel to the main board of the unit.
Page 91 3. Indoor Unit Installation(Duct) 5. Drill 4 holes 10cm (4”) deep at the ceiling hook positions in the internal ceiling. Be sure to hold the drill at 3.1 Service space for indoor unit a 90° angle to the ceiling. 6. Secure the bolt using the included washers and nuts. >...
Page 92 NOTE: 1. Do not put the connecting duct weight on the 3. When installing the filter mesh, fit it into the flange as indoor unit. illustrated in the following figure. 2. When connecting the duct, use an nonflammable canvas tie-in to prevent vibrating. 3.
Page 93: Horizontal Installation
3.6 Horizontal Installation Remove the cover 3.6.1 With External pump (9K, 12K models) Cut both ends of the rubber hose into a straight one, use it to connect the drain Connector A and the external Unplug the “PUMP” pin pump and safety it with clamps on both ends. Then Short connect the “CN5”...
Page 94 Connector Connector  3. IDU Installation-Duct...
Page 95: Installing The Main Body
3. Indoor Unit Installation NOTE: It is recommended to fx it on the wall according to the hanging hole indicated by the arrow on the mounting (Console) plate. Mounting plate must be installed horizontally. 3.1 Service space for indoor unit Mounting plate ≥100mm Tapping...
Page 96: Refrigerant Pipe
open the piping cover plate. Two buckles Refrigerant pipe Drain-pipe Power cord NOTE: In order to drain smoothly, the position of the drain pipe must refer to the above figure when discharging the right pipe. • Installation with skirting line 2.
Page 97: Outdoor Unit Installation
4. Outdoor unit installation 4.3 Install Outdoor Unit Fix the outdoor unit with anchor bolts(M10) 4.1 Service space for outdoor unit >60cm / 23.6” Fix with bolts Caution Since the gravity center of the unit is not at its physical center, so please be careful when lifting it with a sling.
Page 98: Drainage Pipe Installation
For Vertical drainage pipe (The following table is for 5. Drainage Pipe Installation reference) Install the drainage pipe as shown below and take Reference measures against condensation. Improperly installation Allowable value of inner could lead to leakage and eventually wet furniture and maximum water Remark pipe...
Page 99 • The air outlet shall face down to prevent dirt enter- ing pipe. • Each indoor unit of the system should be installed it. • The installation should be considering the conve- nience for future cleaning. • The correct installation will not cause converse water flow and the slope of the branch pipes can be adjusted freely •...
Page 100: Refrigerant Pipe Installation
6. Refrigerant Pipe Installation Indoor unit/ Outdoor unit 6.1 Maximum length and drop height Ensure that the length of the refrigerant pipe, the number of bends, and the drop height between the indoor and outdoor units meets the requirements shown in the following table.
Page 101: Vacuum Drying And Leakage Checking
7. Vacuum Drying and Leakage Pipe diameter Flare dimension A (mm/inch) Flare shape Checking (inch(mm)) 1/4" (6.35) 8.4/0.33 8.7/0.34 7.1 Purpose of vacuum drying • Eliminating moisture in system to prevent the phe- 3/8" (9.52) 13.2/0.52 13.5/0.53 90 ° ± 4 nomena of ice-blockage and copper oxidation.
Page 102: Additional Refrigerant Charge
4. Rain water might penetrate into pipeline during 8. Additional Refrigerant Charge construction. • After the vacuum drying process is carried out, the additional refrigerant charge process need to be performed. Procedures of special vacuum drying are as follows: • The outdoor unit is factory charged with refrigerant.
Page 103: Engineering Of Insulation
9 . Engineering of Insulation insulation and cause easy aging of the material. 9.2 Insulation of drainage pipe 9.1 Insulation of refrigerant pipe 1. Operational procedure of refrigerant pipe 1. Operational procedure of refrigerant pipe insulation insulation Select the suitable pipe → insulation (except joint section) Cut the suitable pipe →...
Page 104: Test Run Instructions
Engineering of Electrical Wring 11. Test Operation 1. Highlights of electrical wiring installation 1. The test operation must be carried out after the entire installation has been • All field wiring construction should be finished by qualified electrician. completed. • Air conditioning equipment should be grounded ac- 2.
Page 105: Drainage Test
4. Drainage Test a. Ensure the drainpipe flow smoothly. New buildings should perform this test before finishing the ceiling. b. Remove the test cover. Add 2000ml of water to the tank through the attached tube. c. Turn on the main power switch and run the air conditioner in COOL mode.
Page 106: Maintenance
Maintenance Contents First Time Installation Check .................2 Refrigerant Recharge ....................4 Re-Installation .......................5 Indoor Unit ....................5 Outdoor Unit ....................7...
Page 107: First Time Installation Check
1. First Time Installation Check Air and moisture trapped in the refrigerant system affects To prevent air and moisture from affecting the air the performance of the air conditioner by: conditioner’s performance, the indoor unit, as well as the pipes between the indoor and outdoor unit, must be be •...
Page 108 Procedure: • If the pressure successfully reaches -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi), fully close the Handle Lo valve, then units, and confirm that both the 2- and 3-way valves cease vacuum pump operations. are closed.
Page 109: Refrigerant Recharge
2. Refrigerant Recharge mA A Procedure: Close both 2- and 3-way valves. 3-way valves. Slightly connect the Handle Lo charge hose to the Operate the air conditioner in cooling mode to charge 3-way service port. the system with liquid refrigerant. Connect the charge hose to the valve at the bottom When the electronic scale displays the correct of the cylinder.
Page 110: Re-Installation
3. Re-Installation Indoor Unit Collecting the refrigerant into the outdoor unit Procedure: Confirm that the 2- and 3-way valves are opened. Close the 3-way valve so that the gauge rests between 0.3 MPa (43.5 Psi) and 0.5 MPa (72.5 Psi). Connect the charge hose with the push pin of Handle Lo to the 3-way valve’s gas service port.
Page 111 Air purging with vacuum pump Procedure: • If the pressure successfully reaches -0.1 MPa Tighten the flare nuts of the indoor and outdoor (14.5 Psi), fully close the Handle Lo valve, then units, and confirm that both the 2- and 3-way valves cease vacuum pump operations.
Page 112: Outdoor Unit
Outdoor Unit Evacuation for the whole system Procedure: Wait for 5 minutes then check whether the gauge Confirm that the 2- and 3-way valves are opened. needle moves after turning off the vacuum pump. If Connect the vacuum pump to the 3-way valve’s the gauge needle moves backward, check whether service port.
Page 113: Refrigerant Charging
Refrigerant charging mA A Procedure: Close both 2- and 3-way valves. Fully open the Handle Lo manifold valve, 2- and 3-way valves. Slightly connect the Handle Lo charge hose to the 3-way service port. Operate the air conditioner in cooling mode to charge the system with liquid refrigerant.
Page 114 Product Features Contents Display Function ....................2 Safety Features ......................5 Basic Functions .......................6 Table ......................6 Abbreviation ....................7 Fan Mode ......................7 Cooling Mode ....................7 Heating Mode(Heat Pump Units) ..............8 Auto-mode ....................9 Drying Mode ....................10 Forced Operation Function ................10 Timer Function ....................10 3.10 Sleep Function .....................10 3.11 Auto-Restart Function ..................10 Optional Functions ....................11 Remote Controller Functions ................12...
Page 115: Display Function
1. Display Function Duct Type Compact Cassette Type Console Type Display Function ECO function (available on select units only) When Wireless Control feature is activated (some units) Temperature value Temperature Timer ON is set. (3s) Activation of Swing, Boost, Silence or UV-C lamp Timer OFF is set.
Page 116: Safety Features
2. Safety Features Compressor three-minute delay at restart Compressor functions are delayed for up to ten seconds upon the first startup of the unit, and are delayed for up to three minutes upon subsequent unit restarts. Automatic shutoff based on discharge temperature If the compressor discharge temperature exceeds a certain level for nine seconds, the compressor ceases operation.
Page 117: Basic Functions
3. Basic Functions Table Cooling Mode&Heating mode Heating Mode Functions Anti-cold Air Outdoor Fan Control Defrosting Mode Function Case 1: Cases Compressor Case 2:T4 Case 1 Case 2 Case 1 Case 2 Frequency and T4 Model Functions Auto mode Cases Case 1 Case 2 Case 3...
Page 118: Abbreviation
Abbreviation 120 minutes. • If the following conditions are satisfied, the Unit element abbreviations compressor ceases operation. • Calculated frequency(fb) is less than minimum limit Abbreviation Element frequency(FminC). Indoor room temperature • Compressor runs at FminC more than 10 minutes. Coil temperature of evaporator •...
Page 119: Heating Mode(Heat Pump Units)
Case 2: • If one of the following conditions is satisfied, not judge protective time. • The outdoor unit will be run at different fan speed • Compressor running frequency is more than test according to T4. frequency. • For different outdoor units, the fan speeds are •...
Page 120: Outdoor Fan Control
to 60%(Medium); Case 1: • When T1-Tsc is higher than 0.5°C, fan speed • T3 is lower than 3°C(37.4°F) and compressor reduces to 40%(Low); running time is more than 120 minutes, at this • When T1-Tsc is higher than 1°C, fan speed reduces time, if T3 is lower than TCDI1+4°C(39.2°F) for 3 to 20%(Low);.
Page 121: Drying Mode
• Low Room Temperature Protection ∆T Running mode If the room temperature is lower than 10°C, the ∆T>2°C(3.6°F) Cooling compressor ceases operations and does not resume until -3℃(-5.4°F)≤∆T≤2°C(3.6°F) Fan-only room temperature exceeds 12°C. ∆T<-3°C(-5.4°F) Heating* Forced operation function Heating*: In auto mode, cooling only models run the fan Press the AUTO/COOL button, the AC will run as below •...
Page 122: Auto-Restart Function
• When cooling, the temperature rises 1°C (to not higher than 30°C/86°F) every hour. After 2 hours, the temperature stops rising and the indoor fan is fixed at low speed. • When heating, the temperature decreases 1°C(to not lower than 16°C/60.8°F) every hour. After 2 hours, the temperature stops decreasing and the indoor fan is fixed at low speed.
Page 123: Optional Functions
4. Optional Functions Electrical energy consumption control function (Optional) 8°C Heating Press the “Gear” button on remote controller to enter the In heating mode, the temperature can be set to as low energy efficient mode in a sequence of following: as 8°C, preventing the indoor area from freezing if unoccupied during severe cold weather.
Page 124: Lcd Wired Remote Controller
5. LCD Wired Remote Controller Infrared Wireless Remote Controller (Standard for some units) 5.1.1 RG10A(B2S)/BGEF Remote Controller Specifications Model RG10A(B2S)/BGEF Rated Voltage 3.0V (Dry batteries R03/LR03×2) Reaching Distance Environment Temperature Range -5°C~60°C(23°F~140°F) Buttons and Functions  Product Features ...
Page 125 Remote LCD Screen Indicators Note: All indicators shown in the figure are for the purpose of clear presentation. But during the actual operation, only the relative function signs are shown on the display window.  Product Features ...
Page 126 5.2.1 LCD Wired Remote Controller KJR-120X/TFBG-E(Optional) The KJR-120X/TFBG-E wired remote controller is optional for some types. i) ) Buttons and Functions 1. . POWER butt 6. . TIMER butt Turn on of turn off the unit. To set timer on and timer off time of one day 7. FAN SPEED button MODE button Used to select the fan speed.
Page 127 ii) i) LCD Screen 1 Operation mode indication 8 Room temperature indication 2 Fan speed indication 9 Rotating indication 3 Temperature display 10 Follow Me function indication 4 Lock indication 11 Left-right swing indication 5 °C / °F indication (some models) 6 Main unit and secondary unit 12 Clock display indication...
Page 128 iii) Installation • Dimensions 20mm 120mm 46mm 60mm 3) Connection • Wire with the indoor unit: 60mm Wiring hole HA HB • 1: Indoor Unit. • 2: Notch the part for the wiring to pass through with a nipper tool. •...
Page 129 For some models: The wired controller connects to terminal board, terminal board connects to main control board. Main control board Terminal board CN40 ENC1 HA HB HA HB Wired controller 4) Address setting Unit2 Unit16 Unit1 HA HB HA HB HA HB HA HB Wired controller...
Page 130: Centralized Controller
5.3 Centralized Controller 1) Connection For Light commercial air conditioner with XYE port, it can be directly connected to Centralized Controller (CCM03, CCM09). 2) Address setting When setting the address, please make sure the unit is powered off. The address can be set from 0 to 63 by the switch. Turn on the unit, then the address will be effective.
Page 131: Using The Wire Controller To Set External Static Pressure(For Duct Type)
5.4 Using the wire controller to set • If there is no change after airflow adjustment in the ventilation paths, be sure to reset automatic airflow external static pressure adjustment. • You can use the unit’s automatic airflow adjustment • If there is no change to ventilation paths after airflow function to set external static pressure.
Page 132: Troubleshooting
Troubleshooting Contents Safety Caution .......................3 General Troubleshooting ..................4 Information Inquiry ....................7 Outdoor Unit Point Check Function ..............14 Error Diagnosis and Troubleshooting Without Error Code .......16 Remote maintenance ...................16 Field maintenance ..................17 Quick Maintenance by Error Code ..............22 Troubleshooting by Error Code ................23 EH 00/EH 0A / EC 51 (EEPROM parameter error Diagnosis and Solution) ..23 EL 01 (Indoor and outdoor unit communication error Diagnosis and Solution) 24 EH 03 / EC 07 (Fan speed is operating outside of the normal range )/EC 71(Over...
Page 133 Troubleshooting Contents 7.11 EC 0d (Outdoor unit malfunction Diagnosis and Solution) ......37 7.12 PC 40(Communication error between outdoor main PCB and IPM board diagnosis and solution) ................38 7.13 PC 08(Current overload protection)/PC 44(Outdoor unit zero speed protection)/ PC 46(Compressor speed has been out of control)/PC 49(Compressor overcurrent failure) diagnosis and solution ...........39 7.14 PC 0F(PFC module protection diagnosis and solution) ........41 7.15 EC 72 (Lack phase failure of outdoor DC fan motor diagnosis and solution) .42...
Page 134: Safety Caution
1. Safety Caution WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. While checking indoor/outdoor PCB, please equip oneself with antistatic gloves or wrist strap to avoid damage to the board. WARNING Electricity remains in capacitors even when the power supply is off.
Page 135: General Troubleshooting
2. General Troubleshooting Error Display (Indoor Unit) When the indoor unit encounters a recognized error, the operation lamp will flash in a corresponding series, the timer lamp may turn on or begin flashing, and an error code will be displayed. These error codes are described in the following table: Operation Timer...
Page 136 TS46/ 7 times FLASH High pressure protection or low pressure protection (for some models) PC 03 TS35 14 times Outdoor unit malfunction(for some models) TS37 ec 0 2 times Communication error between master and slave unit (for twins system) TS50 EL 11 2 times Another indoor unit malfunction (for twins system)
Page 137: Error Display On Two Way Communication Wired Controller
Outdoor compressor lack phase protection TS43 PC 43 PC 44 Outdoor unit zero speed protection TS39 Outdoor unit IR chip drive failure TS44 PC 45 Compressor speed has been out of control TS39 PC 46 PC 49 Compressor overcurrent failure TS39 High pressure protection TS46...
Page 138: Information Inquiry
3. Information Inquiry Duct type &Floor ceiling Type: • To enter information inquiry status, complete the following procedure within ten seconds: • Press LED(or DO NOT DISTURB) 3 times. • Press SWING(or AIR DIRECTION) 3 times. • Finish 1 and 2 within 10 seconds, you will hear beeps for two seconds, which means the unit goes into parameter checking mode.
Page 139 Displayed Displayed code Explanation Meaning Additional Notes value Room temperature 1. All displayed temperatures use actual values. Indoor coil temperature 2. All temperatures are -1F,-1E,-1d,-1c,- -25,-24,-23,-22, displayed in °C regardless Outdoor coil 1b,-1A -21,-20 of remote used. temperature -19—99 -19—99 3.
Page 140 Displayed Displayed code Explanation Meaning Additional Notes value 0-FF Reserved 0-63 0-FF  Troubleshooting 9 ...
Page 141 Compact Cassette Type: • To enter information inquiry status, complete the following procedure within ten seconds: • Press LED(or DO NOT DISTURB) 3 times. • Press SWING(or AIR DIRECTION) 3 times. • Finish 1 and 2 within 10 seconds, you will hear beeps for two seconds, which means the unit goes into parameter checking mode.
Page 142: Console Type
Console Type: • To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “ON/OFF + Air Speed” for 7s • After entering the engineer mode, the remote control will display icons of “Auto, Cool, Dry, Heat”, and the Battery icon;...
Page 143 Error code of engineer mode Display Error Information EH 00/EH 0A Indoor unit EEPROM parameter error Indoor / outdoor unit communication error EL 01 Communication error between indoor unit and indoor external fan module EH A EH 30 Parameters error of indoor external fan Upper indoor fan speed is operating outside of the normal range(for new console type) EH 31 Lower indoor fan speed is operating outside of the normal range(for new console type)
Page 144 IPM malfunction or IGBT over-strong current protection PC 00 Over low voltage protection PC 10 Over voltage protection PC 11 DC voltage protection PC 12 Top temperature protection of compressor or High temperature protection of IPM module pc 02 Communication error between outdoor main chip and compressor driven chip PC 40 Current Input detection protection Pc 41...
Page 145: Outdoor Unit Point Check Function
4. Outdoor Unit Point Check Function(for some models) • A check switch is included on the outdoor PCB. • Push SW1 to check the unit’s status while running. The digital display shows the following codes each time the SW1 is pushed. Number of Display Remark...
Page 146 Frequency limit caused by The display value is a Bit7 IGBT radiator hexidecimal number. Bit6 Frequency limit caused by PFC For example, the Frequency limit caused by digital display show Bit5 high temperature of T2. 2A, then Bit5=1, Frequency limit caused by low Bit3=1, and Bit1=1.
Page 147: Error Diagnosis And Troubleshooting Without Error Code
5. Error Diagnosis and Troubleshooting Without Error Code WARNING Be sure to turn off unit before any maintenance to prevent damage or injury. Remote maintenance SUGGESTION: When troubles occur, please check the following points with customers before field maintenance. Problem Solution Unit will not start TS18 - TS19...
Page 148: Field Maintenance
Field maintenance Problem Solution Unit will not start TS20 - TS21 Compressor will not start but fans run TS20 - TS21 Compressor and condenser (outdoor) fan will not start TS20 - TS21 Evaporator (indoor) fan will not start TS20 - TS21 Condenser (Outdoor) fan will not start TS20 - TS21 Unit runs, but shortly stops...
Page 149 1.Remote Maintenance Electrical Circuit Refrigerant Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ The power switch is on but fans will not start ☆ ☆ ☆ The temperature on the display board cannot be set ☆...
Page 150 1.Remote Maintenance Others Possible causes of trouble Unit will not start The power switch is on but fans will not start ☆ The temperature on the display board cannot be set Unit is on but the wind is not cold(hot) Unit runs, but shortly stops The unit starts up and stops frequently ☆...
Page 151 2.Field Maintenance Refrigerant Circuit Others Possible causes of trouble Unit will not start Compressor will not start but fans run ☆ Compressor and condenser (outdoor) fan will not start Evaporator (indoor) fan will not start Condenser (Outdoor) fan will not start Unit runs, but shortly stops ☆...
Page 152 2.Field Maintenance Electrical Circuit Possible causes of trouble Unit will not start ☆ ☆ ☆ ☆ ☆ ☆ Compressor will not start but fans run ☆ ☆ ☆ ☆ ☆ Compressor and condenser (outdoor) fan will not start ☆ ☆ ☆...
Page 153: Quick Maintenance By Error Code
6. Quick Maintenance by Error Code If you do not have the time to test which specific parts are faulty, you can directly change the required parts according the error code. You can find the parts to replace by error code in the following table. Error Code Part requiring replacement...
Page 154: Troubleshooting By Error Code
7. Troubleshooting by Error Code EH 00/ EH 0A / EC 51 (EEPROM Parameter Error Diagnosis and Solution) Description: Indoor or outdoor PCB main chip does not receive feedback from EEPROM chip. Recommended parts to prepare: • Indoor PCB • Outdoor PCB Troubleshooting and repair: Shut off the power supply and turn it on 2 minutes later.
Page 155: El 01 (Indoor And Outdoor Unit Communication Error Diagnosis And Solution)
EL 01 (Indoor and Outdoor Unit Communication Error Diagnosis and Solution) Description: Indoor unit can not communicate with outdoor unit Recommended parts to prepare: • Indoor PCB • Outdoor PCB • Reactor Troubleshooting and repair: Power off, then restart the unit after 2 minutes.
Page 156 Remarks: • Use a multimeter to test the DC voltage between 2 port(or S or L2 port) and 3 port(or N or S port) of outdoor unit. The red pin of multimeter connects with 2 port(or S or L2 port) while the black pin is for 3 port(or N or S port) . •...
Page 157: Eh 03 / Ec 07 (Fan Speed Is Operating Outside Of The Normal Range )/Ec 71(Over Current Failure Of Outdoor Dc Fan Motor) Diagnosis And Solution
EH 03 / EC 07 (Fan Speed Is Operating Outside of Normal Range)/EC 71(Over Current Failure of Outdoor DC Fan Motor) Diagnosis and Solution Description: When indoor / outdoor fan speed keeps too low or too high for a certain time, the unit ceases operation and the LED displays the failure.
Page 158 Index: 1. Indoor or Outdoor DC Fan Motor(control chip is in fan motor) Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the value of the voltage is not in the range showing in below table, the PCB must has problems and need to be replaced. Color Signal Voltage...
Page 159 Port Description Parameter Remark CON1 Power input for the PCB 230V/AC Communication with main PCB Test port 5V/DC For debugging board CN23 UVW output for DC fan motor CON2 Ports for reactor CN1 Communication with main PCB Signal Voltage +15V 0~6V 0~15V 3.
Page 160 CON1 Drive Chip EEPROM FAN1 FAN2 IPM for DC Rectifier Part Description Parameter Remark CON1 Power input for the PCB 192-380V/DC Communication with main PCB Test port 5V/DC For debugging board FAN1 UVW output for DC fan motor FAN2 UVW output for DC fan motor CN1 Communication with main PCB Signal Voltage...
Page 161: Eh 60/Eh 61/Ec 53/Ec 52/Ec 54/Ec 55/Ec 56/Ec 50 (Open Circuit Or Short Circuit Of Temperature Sensor Diagnosis And Solution)
EH 60/EH 61/EC 53/EC 52/EC 54/EC 55/EC 56/EC 50 (Open Circuit or Short Circuit of Temperature Sensor Diagnosis and Solution) Description: If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure. Recommended parts to prepare: •...
Page 162: El 0C (Refrigerant Leakage Detection Diagnosis And Solution)
EL 0C (Refrigerant Leakage Detection Diagnosis and Solution) Description: Judging the abnormality of the refrigeration system according to the number of compressor stops and the changes in operating parameters caused by excessive exhaust temperature. Recommended parts to prepare: • Indoor PCB •...
Page 163: Eh 0E(Water-Level Alarm Malfunction Diagnosis And Solution)
EH 0E(Water-Level Alarm Malfunction Diagnosis and Solution) Description: If the sampling voltage is not 5V, the LED displays the failure code. Recommended parts to prepare: • Connection wires • Water-level switch • Water pump • Indoor PCB Shut off the power supply and Shut off the power supply and turn it on 2 minutes later.
Page 164: Pc 00(Ipm Malfunction Or Igbt Over-Strong Current Protection)/Pc 04(Inverter Compressor Drive Error) Diagnosis And Solution
PC 00(IPM malfunction or IGBT over-strong current protection)/PC 04(Inverter compressor drive error) Diagnosis and Solution Description: When the voltage signal the IPM sends to the compressor drive chip is abnormal, the display LED shows “PC 00” and the AC turn off. Or an abnormal inverter compressor drive is detected by a special detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
Page 165: Voltage Protection)/Pc 11(Outdoor Unit Main Control Board Dc Bus High Voltage
PC 01(Over voltage or too low voltage protection)/PC 10(Outdoor unit low AC voltage protection)/PC 11(Outdoor unit main control board DC bus high voltage protection)/PC 12(Outdoor unit main control board DC bus high voltage protection /341 MCE error) Diagnosis and Solution Description: Abnormal increases or decreases in voltage are detected by checking the specified voltage detection circuit.
Page 166: Pc 03/Pc 31(Low Pressure Protection Diagnosis And Solution)
PC 03/PC 31(Low Pressure Protection Diagnosis and Solution) Description: If the sampling voltage is not 5V, the LED displays a failure code. Recommended parts to prepare: • Connection wires • Low pressure protector • Indoor fan assembly • Outdoor PCB Troubleshooting and repair: Low pressure protection Low pressure protection...
Page 167: Pc 02(Top Temperature Protection Of Compressor Or High Temperature Protection Of Ipm Module Diagnosis And Solution)
7.10 PC 02(Top temperature protection of compressor or High temperature protection of IPM module diagnosis and solution) Description: For some models with overload protection, If the sampling voltage is not 5V, the LED will display the failure. If the temperature of IPM module is higher than a certain value, the LED displays the failure code. Recommended parts to prepare: •...
Page 168: Ec 0D(Outdoor Unit Malfunction Diagnosis And Solution)
Check the fastening screws on the PCB and IPM radiator. Replace the outdoor Are they fixed tightly? control PCB. Tighten the screws and apply silicon grease. 7.11 EC 0d(Outdoor unit malfunction Diagnosis and Solution) Description: The indoor unit detect the outdoor unit is error. Recommended parts to prepare: •...
Page 169: Pc 40(Communication Error Between Outdoor Main Pcb And Ipm Board Diagnosis And Solution)
7.12 PC 40(Communication error between outdoor main PCB and IPM board diagnosis and solution) Description: The main PCB cannot detect the IPM board. Recommended parts to prepare: • Connection wires • IPM board • Outdoor main PCB • Electric control box Troubleshooting and repair: Is there at least one LED in Is there at least one LED in...
Page 170: Pc 08(Current Overload Protection)/Pc 44(Outdoor Unit Zero Speed Protection)
7.13 PC 08(Current overload protection)/PC 44(Outdoor unit zero speed protection)/ PC 46(Compressor speed has been out of control)/PC 49(Compressor overcurrent failure) diagnosis and solution Description: An abnormal current rise is detected by checking the specified current detection circuit. Recommended parts to prepare: •...
Page 171 Was the protection activated Was the protection activated in standby? in standby? Restart the unit when the power supply Restart the unit when the power supply Is the power voltage is normal? Is the power voltage is normal? returns to normal returns to normal Is outdoor terminal voltage Is the power wiring...
Page 172: Pc 0F(Pfc Module Protection Diagnosis And Solution)
7.14 PC 0F PFC module protection diagnosis and solution) Description: When the voltage signal that IPM send to compressor drive chip is abnormal, the LED displays the failure code and the AC turns off. Recommended parts to prepare: • Connection wires •...
Page 173: Ec 72 (Lack Phase Failure Of Outdoor Dc Fan Motor Diagnosis And Solution)
7.15 EC 72 (Lack phase failure of outdoor DC fan motor diagnosis and solution) Description: When the three-phase sampling current of the DC motor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code. Recommended parts to prepare: •...
Page 174: Pc 43 (Outdoor Compressor Lack Phase Protection Diagnosis And Solution)
7.16 PC 43 (Outdoor compressor lack phase protection diagnosis and solution) Description: When the three-phase sampling current of the compressor is abnormal, especially when the current of one or more phases is always small and almost 0, the LED displays the failure code Recommended parts to prepare: •...
Page 175: Pc 45 (Outdoor Unit Ir Chip Drive Failure Diagnosis And Solution)
7.17 PC 45 (Outdoor unit IR chip drive failure diagnosis and solution) Description: When the IR chip detects its own parameter error, the LED displays the failure code when power on. Recommended parts to prepare: • Inverter module PCB. Troubleshooting and repair: Power off,then restart the unit 2 minutes later.
Page 176: Pc 30 (High Pressure Protection Diagnosis And Solution)
7.20 PC 30 (High pressure protection diagnosis and solution) Description: Outdoor pressure switch cut off the system because high pressure is higher than 4.4 MPa Recommended parts to prepare: • Connection wires • Pressure switch • Outdoor fan • Outdoor main PCB Troubleshooting and repair: ...
Page 177 High pressure protection High pressure protection Are the high pressure switch Are the high pressure switch Connect high pressure switch and Connect high pressure switch and and main control boar wired and main control boar wired mian control board mian control board correctly? correctly? Is the high pressure...
Page 178: Pc 0A (High Temperature Protection Of Condenser Diagnosis And Solution)
7.21 PC 0A (High temperature protection of condenser diagnosis and solution) Description: When the outdoor pipe temperature is more than 65°C, the unit stops. It starts again only when the outdoor pipe temperature is less than 52°C. Recommended parts to prepare: •...
Page 179: Pc 06 (Discharge Temperature Protection Of Compressor Diagnosis And Solution)
7.22 PC 06 (Discharge temperature protection of compressor diagnosis and solution) Description: If the compressor discharge temperature exceeds a certain level for nine seconds, the compressor ceases operation, the LED displays the failure code Recommended parts to prepare: • Connection wires •...
Page 180: El11 (Communication Error Between Master And Slave Unit (For Twins System)
7.23 EL11 (Communication error between master and slave unit (for twins system) Diagnosis and Solution) Description: When set in twins system, master unit and slave unit cannot be recognized normally. Recommended parts to prepare: • Connection wires • Indoor PCB Check the dial switch Check the dial switch Correct the settings...
Page 181: Eh B3 (Communication Error Between Wired Controller And Indoor Unit Diagnosis And Solution)
7.25 EH b3 (Communication error between wired controller and indoor unit Diagnosis and Solution Description: If Indoor PCB does not receive feedback from wired controller, the error displays on the wired controller Recommended parts to prepare: • Connection wires • Indoor PCB •...
Page 182: Eh Ba
7.26 EH bA(Communication malfunction between external fan module and indoor unit)/ EH 3A(External fan DC bus voltage is too low protection)/ EH 3b(External fan DC bus voltage is too high fault) diagnosis and solution Description: Indoor unit does not receive the feedback from external fan module during 150 seconds. or Indoor unit receives abnormal increases or decreases in voltage from external fan module.
Page 183: Check Procedures
8. Check Procedures 8.1 Temperature Sensor Check WARNING Be sure to turn off all power supplies or disconnect all wires to avoid electric shock. Operate after compressor and coil have returned to normal temperature in case of injury. 1. Disconnect the temperature sensor from PCB (Refer to Chapter 5&6. Indoor&Outdoor Unit Disassembly). 2.
Page 184 Resistance KSN98D64UFZ3 KSN140D21UFZ KTM240D43UKT KTM240D57UMT Value Blue-Red Blue-Black 2.7Ω 1.28Ω 1.03Ω 0.62Ω Red-Black Resistance KTF250D22UMT KTF310D43UMT KTQ420D1UMU KSN140D58UFZ Value ATF235D22TMT ATF310D43TMT ATQ420D1SN5A1 Blue-Red Blue-Black 0.75Ω 1.86Ω 0.65Ω 0.37Ω Red-Black Resistance Value ATM150D23TFZ ATH307CDRC8DUL Blue-Red Blue-Black 1.72Ω 1.09Ω Red-Black Note: The picture and the value are only for reference, actual condition and specific value may vary. Troubleshooting ...
Page 185: Ipm Continuity Check
8.3 IPM Continuity Check WARNING Electricity remains in capacitors even when the power supply is off. Ensure the capacitors are fully discharged before troubleshooting. 1. Turn off outdoor unit and disconnect power supply. 2. Discharge electrolytic capacitors and ensure all energy-storage unit has been discharged. 3.
Page 186 Indoor Unit Disassembly-Compact Cassette Contents Indoor Unit Disassembly ..................1 Front Panel and Display Board................2 Electrical Parts ....................5 Fan Motor and Fan ..................7 Water Pump ....................9 Evaporator ....................11...
Page 187: Indoor Unit Disassembly
1. Indoor Unit Disassembly Front Panel and Display Board Procedure Illustration 1) Release 2 hooks and open the panel. CJ_MCA_001 ) (see CJ_MCA_001 2) Remove two screws of wire line. (see CJ_MCA_002 ) CJ_MCA_002 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 188 Procedure Illustration 3) Release the hook then pull up the filter(see CJ_MCA_003 ) CJ_MCA_003 4) Remove 4 screws of cover and remove CJ_MCA_004 ) the display board(see CJ_MCA_004 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 189 Procedure Illustration 5) Remove 2 screws of display board and remove PCB.(see CJ_MCA_005 ) CJ_MCA_005 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 4 ...
Page 190 Electrical Parts(Antistatic gloves must be worn.) Note: Remove the front panel (refer to 1.1 Front Panel and display) before disassembling electrical parts. Procedure Illustration 1) Remove 4 screws of the panel and pull up the panel. (see CJ_ MCA_006) CJ_MCA_006 2) Remove 3 screws of electrical cover.
Page 191 Procedure Illustration 3) Disconnect the connectors of PCB. CJ_MCA_008 ) (see CJ_MCA_008 4) Remove 2 screws of main control board and remove PCB.(see MCA_009 ) CJ_MCA_009 5) Remove 2 screws of electronic control box and remove electronic CJ_MCA_010 ) control box.(see CJ_MCA_010 Note: This section is for reference only.
Page 192: Fan Motor And Fan
Fan motor and fan Note: Remove the front panel and electrical parts (refer to 1.1 &1.2 ) before disassembling fan motor. Procedure Illustration 1) Remove 4 screws of water collector then remove it.(see CJ_MCA_011 ) CJ_MCA_011 2) Remove the nut of the fan and then CJ_MCA_012 ) pull up the fan.(see CJ_MCA_012...
Page 193 Procedure Illustration 3) Remove the nuts and remove the fan motor(see CJ_MCA_013 ) CJ_MCA_013 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 8 ...
Page 194: Water Pump
Water Pump Note: Remove the front panel, electrical parts and water collector (refer to 1.1,1.2 &1.3) before disassembling water pump. Procedure Illustration 1) Take off the fasten belt of the water pump. (see CJ_MCA_014) CJ_MCA_014 2) Pinch the metal wire in the direction shown in the figure to release it.
Page 195 Procedure Illustration 3) Remove 3 screws and then remove the water pump. (see CJ_MCA_016) CJ_MCA_016 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 10 ...
Page 196: Evaporator
Evaporator Note: Remove the front panel, electrical parts and fan(refer to 1.1,1.2 &1.3) before disassembling evaporator. Procedure Illustration 1) Remove 3 screws of pipe clamp board assembly then remove it.(see CJ_MCA_017 ) CJ_MCA_017 2) Remove 4 screws of evaporator fixing board then remove it.(see MCA_018 ) CJ_MCA_018 Note: This section is for reference only.
Page 197 Procedure Illustration 3) Remove 1 screw of evaporator fixing CJ_MCA_019 ) hook and remove it. (see CJ_MCA_019 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 12 ...
Page 198 Indoor Unit Disassembly-New 4-way Cassette Contents Indoor Unit Disassembly ..................1 Front Panel ....................2 Electrical Parts ....................5 Display Board ....................6 Water Pump ....................8 Water Collector & Water Level Switch ............9 Fan Motor and Fan ..................11 Evaporator ....................12...
Page 199: Indoor Unit Disassembly
1. Indoor Unit Disassembly Front Panel Procedure Illustration 1) Push one side of the grille clamp. (see CJ_MCD1_001 ) CJ_MCD1_001 2) Remove one screw then push two grille clamps to remove the air inlet CJ_MCD1_002 ) grille assembly.(see CJ_MCD1_002 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 200 Procedure Illustration 3) Turn over the air inlet grille assembly then pull up the filter. (see MCD1_003 ) CJ_MCD1_003 4) Remove 2 screws and remove the cover of electronic control box. (see CJ_MCD1_004 ) CJ_MCD1_004 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 201 Procedure Illustration 5) Disconnect the connectors of display board and stepper motor and release CJ_MCD1_005 ) the panel. (see CJ_MCD1_005 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 4 ...
Page 202 Electrical Parts (Antistatic gloves must be worn.) Procedure Illustration 1) Remove 3 screws of electronic control box and 1 screw of earth CJ_MCD1_006 ) wire.(see 2) Disconnect the connectors of temperature sensor, pump, motor Earth wire and water level switch. (see MCD1_006 ) 3) Remove the electronic control box CJ_MCD1_006 )
Page 203: Display Board
Display Board Procedure Illustration 1) Open the install cover assembly(with display board) (see CJ_MCD1_008) CJ_MCD1_008 2) Remove 1 screw of display window board. (see CJ_MCD1_009) CJ_MCD1_009 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 6 ...
Page 204 Procedure Illustration 3) Turn over the display board, push the swtich to remove the display board. (see CJ_MCD1_010) CJ_MCD1_010 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 7 ...
Page 205: Water Pump
Water Pump Procedure Illustration 1) Remove 5 screws fixing external water pump box assembly.(see CJ_ MCD1_011) CJ_MCD1_011 2) Remove the water pump box assembly. (see CJ_MCD1_012) CJ_MCD1_012 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 8 ...
Page 206 Water Collector and Water Level Switch Procedure Illustration 1) Remove the 2 screws of the ventilation ring. (see CJ_MCD1_013) CJ_MCD1_013 2) Remove the 2 screws fixing the water collector. (see CJ_MCD1_014) CJ_MCD1_014 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 207 Procedure Illustration 3) Remove the 5 screws of the water collector subassembly. (see CJ_ MCD1_015) CJ_MCD1_015 4) Turn over the water collector subassembly and remove the water level switch. (see CJ_MCD1_016) CJ_MCD1_016 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 208: Fan Motor And Fan
Fan Motor and Fan Procedure Illustration 1) Remove the nut of the fan and then pull up the fan. (see CJ_MCD1_017) CJ_MCD1_017 2) Remove 2 screws of fixing board and 3 nuts of fan motor. (see CJ_ MCD1_018) CJ_MCD1_018 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 209: Evaporator
Evaporator Procedure Illustration 1) Remove 2 screws of pipe clamp board. (see CJ_MCD1_019) CJ_MCD1_019 2) Remove 4 screws of the evaporator fixing bracket and then remove it. (see CJ_MCD1_020) CJ_MCD1_020 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 210 Indoor Unit Disassembly - DUCT Contents Indoor Unit Disassembly ..................1 Electrical Parts ....................2 Fan Motor and Fan ..................5 Evaporator .....................7...
Page 211 1. Indoor Unit Disassembly Electrical Parts (Antistatic gloves must be worn.) Procedure Illustration 1) Remove 5 screws of the cover of electronic control box and then remove the cover. (see CJ_A6_001) CJ_A6_001 2) Remove 2 screws of the electronic control box. Then release 2 hooks of the main control board.
Page 212 Procedure Illustration 3) Disconnect the connectors and then remove the front main control board. (see CJ_A6_003) 4) Turn over the electronic control box. CJ_A6_003 Disconnect the connectors and remove 2 screws of rear main control board. (see CJ_A6_004) CJ_A6_004 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 213 Procedure Illustration 5) Remove 2 screws of reactor and remove the reactor. (see CJ_A6_005) CJ_A6_005 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 4 ...
Page 214 Fan motor and fan Procedure Illustration 1) Remove 10 screws of the top cover and then remove the top cover. (see CJ_A6_006) CJ_A6_006 2) Release 3 hooks of volute shell. (see CJ_A6_007) CJ_A6_007 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 215 Procedure Illustration 3) Remove the fiing screws of fan (2 screws). (see CJ_A6_008) CJ_A6_008 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 6 ...
Page 216 Evaporator Procedure Illustration 1) Remove 9 Screws of the water collecter and remove the water collecter. (see CJ_A6_009) CJ_A6_009 2) Remove the screws of the pipe clamp board and the left side board (3 for the pipe clamp and 9 for left side board). (see CJ_A6_010) CJ_A6_010 Note: Remove the front panel (refer to 1.
Page 217 Procedure Illustration 3) Remove 2 screws of the evaporator support and then pull up the temperature sensor. (see CJ_A6_011) CJ_A6_011 4) Remove the screw of the evaporator and then remove it. (see CJ_A6_012) CJ_A6_012 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 218 Indoor Unit Disassembly-Console Contents Indoor Unit Disassembly ..................1 Filter ......................2 Display Board ....................4 Panel Frame Subassembly ................5 Upper air outlet frame assembly ..............6 Lower air outlet frame assembly ..............8 Evaporator .....................9 Fan Motor and Fan ..................10 Electrical Parts .....................11...
Page 219: Indoor Unit Disassembly
1. Indoor Unit Disassembly Filter Procedure Illustration 1) Hold the both sides of front panel and open the front panel. (see CJ_ CONSOLE2_001) CJ_CONSOLE2_001 2) Remove the string from the hook. (see CJ_CONSOLE2_002) CJ_CONSOLE2_002 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 220 Procedure Illustration 3) Pull out the filter (see CJ_ CONSOLE2_003) CJ_CONSOLE2_003 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 3 ...
Page 221: Display Board
Display Board Note: Remove the front panel (refer to 1.1. filter) before disassembling display board. Procedure Illustration 1) Remove 1 screw and remove the display box subassembly(see CJ_ CONSOLE2_004) CJ_CONSOLE2_004 Display board 2) Pry open the display light box.(see CJ_ CONSOLE2_005) 3) Remove the display board and the humidity sensor module.
Page 222: Panel Frame Subassembly
Panel Frame Subassembly Note: Remove the front panel (refer to 1.1. filter) before disassembling panel frame subassembly. Procedure Illustration 1) Remove 7 screws and remove the panel frame subassembly(see CJ_ CONSOLE2_006) CJ_CONSOLE2_006 Note: This section is for reference only. Actual unit appearance may vary. ...
Page 223: Upper Air Outlet Frame Assembly
Upper Air Outlet Frame Assembly Note: Remove the front panel and panel frame subassembly (refer to 1.1. Filter&1.3 Panel frame subassembly) before disassembling upper air outlet frame assembly. Procedure Illustration 1) Remove 3 screws and remove the upper air outlet frame assembly.(see CJ_CONSOLE2_007) CJ_CONSOLE2_007 2) Remove 2 screws and remove the...
Page 224 Procedure Illustration 3) Take out the positive and negative ion generator upward, and pull out the positive and negative ion emitter(see CJ_CONSOLE2_009)(for some units) CJ_CONSOLE2_009 Note: This section is for reference only. Actual unit appearance may vary.  Indoor Unit Disassembly 7 ...
Page 225: Lower Air Outlet Frame Assembly
Lower Air Outlet Frame Assembly Note: Remove the front panel and panel frame subassembly (refer to 1.1. Filter&1.3 Panel frame subassembly) before disassembling lower air outlet frame assembly. Procedure Illustration 1) Remove 3 screws and remove the lower air outlet frame assembly.(see CJ_CONSOLE2_010) CJ_CONSOLE2_010 2) Remove 2 screws and remove the...
Page 226: Evaporator
Evaporator Note: Remove the front panel, panel frame subassembly,upper air outlet frame assembly and lower air outlet frame assembly (refer to 1.1,1.3,1.4&1.5 ) before disassembling evaporator. Procedure Illustration 1) Remove 1 screw and remove auxiliary water pan.(see CJ_CONSOLE2_012) Remove one screw used for the ground connection(see CJ_CONSOLE2_012) pull out the coil temperature sensor (T2) (see CJ_CONSOLE2_012)
Page 227: Fan And Fan Motor
Fan and Fan Motor Note: Remove the evaporator subassembly (refer to 1.1, 1.3, 1.4, 1.5 and 1.6) before disassembling fan. Procedure Illustration 1) Remove 1 screw and 1 hook,and remove the motor cover(there are two motor cover). (see CJ_CONSOLE2_014) 2) Pull out the fan motor and fan assembly from the side.
Page 228 Electrical Parts (Antistatic gloves must be worn.) Note: Remove the front panel& panel frame subassembly (refer to 1.1&1.3 ) before disassembling electrical parts. Procedure Illustration 1) Remove 1 screw and remove the cover of electronic control box. (see CJ_ CONSOLE2_016) CJ_CONSOLE2_016 2) Pull out the electrical main board.
Page 229 Appendix Contents Temperature Sensor Resistance Value Table for T1, T2, T3, and T4 (°C – K) ..2 Temperature Sensor Resistance Value Table for TP (for some units)(°C --K) ..3 iii) Pressure On Service Port ..................4...
Page 230 i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5 2.19073 0.59386 96.3423 10.9731...
Page 231 ii) Temperature Sensor Resistance Value Table for TP(for some units) (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm...
Page 232 Cooling chart(R32): ODU(DB) °F(°C) 0(-17) 5(-15) 95 (35) (-9.44) (7.22) (23.89) (29.44) (40.56) (46.11) (48.89) IDU(DB/WB) 70/59 (21.11/15) 10.3 10.8 75/63 (23.89/17.22) 10.9 11.4 80/67 (26.67/19.44) 11.4 12.1 90/73 (32.22/22.78) 10.7 10.5 10.2 10.8 12.6 13.3 70/59 (21.11/15) 75/63 (23.89/17.22) 80/67 (26.67/19.44) 90/73 (32.22/22.78) 70/59 (21.11/15)
Page 233 Heating chart(R32): ODU(DB/WB) 57/53 47/43 37/33 27/23 17/13 (-8.33/- 0/-2 -17/-18 °F(°C) (13.89/11.67) (8.33/6.11) (2.78/0.56) (-2.78/-5) 10.56) (-17/-19) (-27/-28) IDU(DB) 55(12.78) 30.9 29.1 25.8 23.3 21.2 18.9 16.8 65(18.33) 33.2 30.6 27.1 25.9 23.8 20.9 19.4 75(23.89) 34.5 32.1 28.4 26.8 25.4 21.9...
Page 234 System Pressure Table-R32 Pressure Temperature Pressure Temperature °C °F °C °F 14.5 -51.909 -61.436 1850 18.5 268.25 28.425 83.165 21.75 -43.635 -46.543 1900 275.5 29.447 85.005 -37.323 -35.181 1950 19.5 282.75 30.448 86.806 36.25 -32.15 -25.87 2000 31.431 88.576 43.5 -27.731 -17.916 2050...
Page 235 AIR CONDITIONING SYSTEMS MULTI SPLIT UNIT V:2.0.122022 INVENTOR A.G. S.A. Manufacturer: 24th km National Road Athens - Lamia & 2 Thoukididou Str., Ag.Stefanos, 14565 Tel.: +30 211 300 3300, Fax: +30 211 300 3333 - www.inventor.ac...

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