ecoclima CM2-H16/4DR2 Service Manual

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Service manual

(FREE MATCH 50Hz R32)

Models:

СM2-H16/4DR2

СM3-H22/4DR2

2022.06

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Summary of Contents for ecoclima CM2-H16/4DR2

Page 1 Service manual (FREE MATCH 50Hz R32) Models: СM2-H16/4DR2 СM3-H22/4DR2 2022.06...
Page 2: Table Of Contents
CONTENT 1. Summary and Features ................1 2. Safety Precautions ..................2 3. Speciﬁcations ....................4 3.1 Unit Speciﬁcations ....................4 3.2 Operation Characteristic Curve ................6 3.3 Capacity Variation Ratio According to Temperature ..........6 3.4 Noise Curve ......................7 4.
Page 3: Summary And Features
1. Summary and Features Outdoor Unit CM2H-1644A23 CM3H-2228A23...
Page 4: Safety Precautions
2. Safety Precautions Installing, starting up, and servicing air conditioner can behazardous due to system pressure, electrical components, and equipment location, etc.Only trained, qualified installers and service personnel areallowed to install, start-up, and service this equipment.Untrained personnel can perform basic maintenance fun-ctions such as cleaning coils. All other operations should be performed by trained service personnel.When handling the equipment, observe precautions in themanual and on tags, stickers, and labels attached to theequipment.
Page 5 Please read this operating manual carefully before operating the unit Appliance filled with flammable gas R32. Before use the appliance,read the ower's manual first. Before install the appliance,read the installation manual first. Before repair the appliance,read the service manual first. The figures in this manual may be diffrerent with the material objects, please refer to the material objects for reference .
Page 6: Specifications
3. Speciﬁcations 3.1 Unit Speciﬁcations Model －－ Product Code CM2H-1644A23 CM3H-2228A23 － Project number LX-2020-KF015 LX-2019-KF113 Detailed number － CH1124916 CH1122411 Series Name － MULTI MULTI － Target Country or Area Europe Europe Cooling Capacity － 4.7(1.7～5.64) 6.4(2.05～7.68) Cooling Capacity 16000(5800～19243) 22000(6995～26204) Pdesignc...
Page 7 Model Compressor Trademark CRSS GMCC － Chassis Electrical Heater Power Input Chassis Electrical Heater Current Fan Type Axial-flow Axial-flow － Fan Quantity － Fan Diameter-height 455-151 496-139 Fan Diameter-height inch 17.9-5.9 19.5-5.47 － Motor Model ZKFN-70-8-3 ZKFN-70-8-2 Motor Type DC motor DC motor －...
Page 8 Refrigerant Charge 38.8 50.1 Model Throttling Method Electron expansion valve Electron expansion valve － Dimension of Outline(W) Dimension of Outline(D) Dimension of Outline(H) Dimension of Carton Box(L) 1015 Dimension of Carton Box(W) Dimension of Carton Box(H) Dimension of Package(L) 1015 Dimension of Package(W) Dimension of Package(H) Outdoor Unit Stacked Layers...
Page 9: Operation Characteristic Curve
3.2 Operation Characteristic Curve Cooling Heating Condition Condition Indoor:DB 20°C Indoor:DB 27°C WB19°C Indoor air flow: Super High Indoor air flow: Super High Pipe length:5m Pipe length:5m Voltage:230V Voltage:230V Compressor Speed(rps) Compressor Speed(rps) 3.3 Capacity Variation Ratio According to Temperature Heating operation ambient temperature range is -20ºC~24ºC Cooling Heating...
Page 10: Noise Curve
3.4 Noise Curve Outdoor side noise when blowing Compressor frequency(Hz)
Page 11: Construction Views
4. Construction Views 4.1 Outdoor Unit CM2H-1644A23 Unit:mm...
Page 12 CM3H-2228A23 Unit:mm...
Page 13: Refrigerant System Diagram
5. Refrigerant System Diagram Heat Exchanger Filter Heat Exchanger Capillary Motor Electronic Expansion Valve Four-Way Valve Gas/Liquid Separator Compressor The outdoor and indoor units start to work once the power is switched on. During the cooling operation, the low temperature, low pressure refrigerant gas from the heat exchanger of each indoor unit gets together and then is taken into the compressor to be compressed into high temperature, high pressure gas, which will soon go to the heat exchanger of the outdoor unit to exchange heat with the outdoor air and then is turned into refrigerant liquid.
Page 14 CM2H-1644A23/ CM3H-2228A23 These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
Page 15: Standard Accessory Parts
7. Installation Instructions 7.1 Standard Accessory Parts The standard accessory parts listed below are furnished and should be used as required. Table 1 (90) Joined with the connection pipe Joined with the pipe connected with indoor Unit joint of outdoor Unit Pipe Joint Subassembly Table 1 Joined with the connection pipe...
Page 16: Safety Operation Of Flammable Refrigerant
7.2 Safety operation of flammable refrigerant Qualiﬁcation requirement for installation and maintenance man All the work men who are engaging in the refrigeration system should bear thevalid certification awarded by the authoritative organization and the qualification for dealing with the refrigeration system recognized by this industry. If it needs other technician to maintain and repair the appliance, they should be supervised by the person who bears the qualication for using the flammable refrigerant.
Page 17 Installation prepare To ensure the safety, please be mindful of the following precautions WARNING 1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the speciﬁed refrigerant. — Any presence of air or other foreign substance in the refrigerant circuit will cause system pressure rise or compressor rupture, resulting in injury.
Page 18: Installation Location And Matters Needing Attention
7.3 Installation Location and Matters Needing Attention The installation of the unit must comply with the national and local safety regulations. The installation quality directly affects the normal use, so the user should not carry out the installation personally, instead, the installation and debugging should be done by technician according to this manual.
Page 19 Notes: 1. The specifications of the breaker and power cable listed in the table above are determined based on the maximum power (maximum amps) of the unit. 2. The specifications of the power cable listed in the table above are applied to the conduit-guarded multi-wire copper cable (like, YJV copper cable, consisting of PE insulated wires and a PVC cable jacket) used at 40°C and resistible to 90°C (see IEC 60364-5-562).
Page 20 ● Installation of the Outdoor Unit 1. During the transportation of the outdoor unit, two lifting ropes long enough must be used in four directions and the separation included angle must be less than 40° prevent the center of unit deviating. 2.
Page 21 ● Allowable Length and Height Fall of the Refrigerant Pipe Table 5 Allowable Length Refrigerant Pipe Totlal Length(m) L1+L2 L1+L2+L3 Max. Length for Single Unit(m) Outdoor unit Max. and indoor unit installation Indoor unit and altitude indoor unit...
Page 22 Table 6 Dimension of the Refrigerant Pipe of the Indoor Unit Capacity Level of the Indoor Unit Gas Pipe (mm) Liquid pipe (mm) Φ9.52 Φ6.35 09、12 Φ12.7 Φ6.35 ● Piping between the Indoor and Outdoor units 1. Refer to Table 7 for the moments of torque for tightening screws. 2.
Page 23 CAUTION! 1. Do not wrap the pipe too tightly, otherwise the insulation effect would be weakened. Additionally, make sure the drain hose is separated from the pipe. 2. After that, fill the hole on the wall with sealing material to prevent wind and rain coming into the room. Refrigerant Charging and Trial Running ●...
Page 24 3. Example: CM3H-2228A23 Fig.6 Table 10 Indoor Unit Serial No. Model Indoor Unit 1 CMSH-12QB Indoor Unit 2 CMSH-12QB Indoor Unit 3 CMSH-12QB Table 11 Liquid Refrigerant Pipe Serial No. Diameter Φ6.35 Φ6.35 Φ6.35 Length The total length of each liquid refrigerant pipe is: a+b+c=20+15+15=50m Thus, the minimum additional refrigerant charge=(50-15)×0.012=0.42kg (Note: no additional refrigerant is needed for the liquid pipe within 15m) 4.
Page 25 ● Items to be checked after the installation Table 14 Items to be Checked Possible Errors Check Results Has each part and component of the The unit may fall off ,vibrate or generate noise. unit been installed securely? The cooling (heating) capacity may Has the gas leakage test been taken? be poor.
Page 26: Test Operation
7.4 Test operation 1. Preparation of test operation ● The client approves the air conditioner. ● Specify the important notes for air conditioner to the client. 2. Method of test operation ● Put through the power, press ON/OFF button on the remote controller to start operation. ●...
Page 27: Exploded Views And Parts List
8. Exploded Views and Parts List 8.1 Outdoor Unit CM2H-1644A23 Model:...
Page 28 Part Code Description CM2H-1644A23 Product Code CH1124916 front net cover 810951003 front plate subassembly 810950499 outdoor electric control subassembly 811156815 Platen 811070398 Electrical inseallation board 88610069700 Electrical inseallation board 810536134 clamp 8866700330K9 Platen 810950338 Terminal seat 811127702 bottom plate subassembly 811176784 gas-liquid separator 811132764...
Page 29 Model: CM3H-2228A23...
Page 30 Part Code Description CM3H-2228A23 Product Code CH1122411 front net cover 810736969 front plate subassembly 810865538 outdoor electric control subassembly 811122023 Terminal seat 811127702 Electrical inseallation board 88610069700 Electrical inseallation board 810536134 Platen 811070398 clamp 8866700330K9 Platen 810950338 bottom plate subassembly 811124733 gas-liquid separator 811132764...
Page 31: Troubleshooting
9. Troubleshooting 9.1 PCB Printed Diagram 6 7 8 Outdoor Unit 9 10 11 12 13 14 15 16 18~21 Silk scren name Connector Function note U,V,W Compressor power line interface Connect compressorU(BLK) connect blue (WHT) connect yellow W(ORE) connect red TUBE-A Pipe&gas temp testing interface Connect No.A system pipe&gas temp sensor...
Page 32 COM-IN Communication interface No.A system communication interface black COM-IN Communication interface No.B system communication interface gray COM-IN Communication interface No.C system communication interface white COM-IN Communication interface No.D system communication interface Display code table Display Board Error Item Failure of indoor temperature sensor Fault Sensor for Indoor Coil Communication Failure of Indoor and External Machine Failure wifi internal machinery...
Page 33 1. Communication failure of indoor unit Overview of faults In case of communication failure, the indoor unit displays "F6" communication failure, and if the communication returns to normal, the internal unit will be turned on. Cause of failure Communication fault "F6" is generated. It is possible that the fault point machine can not receive the data sent by the external machine, or the machine can not receive the data sent by the external machine for 3 consecutive minutes during operation Content...
Page 34 Two: sensor and its related faults Overview of faults Short-circuit and open circuit of the temperature sensing bag, all of which have fault code display. Indoor: environmental sensor failure, pipe temperature sensor failure. Outdoor: the environmental sensor, outdoor pipe temperature sensor and exhaust temperature sensor are faulty. Sensor resistance is abnormal If the sensor resistance is abnormal or the sensor with wrong specification is replaced during maintenance, the fault code of the sensor is generally not displayed, but it may cause abnormal protection frequency limiting, abnormal protection shutdown and other...
Page 35 Four: compressor drive module protection failure Overview of faults The internal machine displays protection faults of compressor driving module, such as "E4", "F9", "P9" and other faults related to compressor operation and module driving. Cause of failure Compressor phase current is too large, module driving voltage is too low, or IPM module temperature is too high. Possible failure point Compressor wiring is reversed, and the driving software parameters of outdoor electronic control components do not match the compressor;...
Page 36 protects electronic components, power modules and compressors, etc. to prevent excessive heat accumulation and burn out. This fault includes outdoor unit input current protection and compressor phase current protection. Cause of failure 2.1 outdoor unit input current protection Outdoor unit controller detects AC current of external unit. When input current exceeds a certain threshold value, the controller limits frequency, reduces frequency or stops compressor according to detected current, and if it reaches stop current value, it reports input current protection of outdoor unit.
Page 37: Removal Procedure
10. Removal Procedure 10.1 Removal Procedure of Outdoor Unit(16K) Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Procedure Note 1.Before disassembly 2. Remove top cover Remove connection screws connecting the top cover plate with the front panel and the right side plate, and then remove the toppanel.
Page 38 Procedure Note 4. Remove axial flow blad and Motor Remove the nut fixing the blade and then remove the axial flow blade. Remove tapping screws fixing the motor anddisconnect the leading wire insert of the motor. Then remove the motor。 5.
Page 39 Procedure Note 7. Remove electric box assy Remove screws fixing the electric box assy; loosen the wire bundle and unplug the wiring terminals. Then lift the electric box to remove 8. Remove motor support Unscrewed the chassis and the motor bracket fixed screw, motor bracket is desirable.
Page 40 Procedure Note 10. Remove 4-way valve assy Unsolder the spot weld of 4-way valve assy, compressor and condenser, and then remove the 4-way valve assy . Warning Discharge the refrigerant completely before unsoldering,when unsoldering, wrap the gas valve with awet cloth completely to avoid damage to thevalve caused by high temperature.
Page 41 Procedure Note 12. Remove Expansion valve Assy Unsolder the spot weld of expansion valve assy, liquid valve and condenser, and then remove the expansion valve assy . 13. Remove the compressor A: Remove the 2 screws fixing the gas valve and unsolder the welding joint between the gas valve and the air-return pipe to remove the gas valve.
Page 42: Removal Procedure Of Outdoor Unit(22K)
10.2 Removal Procedure of Outdoor Unit(22K) Warning Be sure to wait for a minimum of 10 minutes after turning off all power supplies before disassembly. Procedure Note 1.Before disassembly 2. Remove top cover Remove connection screws connecting the top cover plate with the front panel and the right side plate, and then remove the toppanel.
Page 43 Procedure Note 4. Remove axial flow blad and Motor Remove the nut fixing the blade and then remove the axial flow blade. Remove tapping screws fixing the motor anddisconnect the leading wire insert of the motor. Then remove the motor。 5.
Page 44 Procedure Note 7. Remove electric box assy Remove screws fixing the electric box assy; loosen the wire bundle and unplug the wiring terminals. Then lift the electric box to remove 8. Remove motor support and reinforcing plate Unscrewed the chassis and the motor bracket fixed screw, motor bracket is desirable.
Page 45 Procedure Note 10. Remove 4-way valve assy Unsolder the spot weld of 4-way valve assy, compressor and condenser, and then remove the 4-way valve assy . Warning Discharge the refrigerant completely before unsoldering,when unsoldering, wrap the gas valve with awet cloth completely to avoid damage to thevalve caused by high temperature.
Page 46 Procedure Note 12. Remove Expansion valve Assy Unsolder the spot weld of expansion valve assy, liquid valve and condenser, and then remove the expansion valve assy . 13. Split the valve and valve support Screwdriver unscrew the valve and valve bracket set screw, remove the air valve subassembly and hydraulic valve.

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Cm3-h22/4dr2