9ASNA-A1-1202 SERVICE MANUAL SENVILLE AIRCONDITIONER DC INVERTER SPLIT WALL-MOUNTED TYPE
CONTENTS 1. Precaution..................................................................................................................................................... 1 1.1 Safety Precaution .......................................................................................................................... 1 1.2 Warning ......................................................................................................................................... 1 2. Function ..........................
1. Precaution 1.1 Safety Precaution n To prevent injury to the user or other people and property damage, the following instructions must be followed. n Incorrect operation due to ignoring instruction will cause harm or damage. n Before service unit, be sure to read this service manual at first. 1.2 Warning Ø Installation n Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. There is risk of fire or electric shock.
condenser and evaporator. n For installation, always contact the dealer or an Authorized service center. There is risk of fire, electric shock, explosion, or injury. n Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product. n Be sure the installation area does not deteriorate with age. If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
There is risk of explosion or fire. n If strange sounds, or small or smoke comes from product. Turn the breaker off or disconnect the power supply cable. There is risk of electric shock or fire. n Stop operation and close the window in storm or hurricane. If possible, remove the product from the window before the hurricane arrives. There is risk of property damage, failure of product, or electric shock. n Do not open the inlet grill of the product during operation.
n Keep level even when installing the product. It can avoid vibration of water leakage. n Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. It may cause a problem for your neighbors. n Use two or more people to lift and transport the product. Avoid personal injury. n Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product.
damage. n Do not insert hands or other object through air inlet or outlet while the product is operated. There are sharp and moving parts that could cause personal injury. n Do not drink the water drained from the product. It is not sanitary could cause serious health issues. n Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. n Replace the all batteries in the remote control with new ones of the same type.
2.
Indoor unit Operation by remote controller Anti-freezing control in cooling Prevent the water being frozen on evaporator by checking the evaporator pipe temperature Golden fin (Optional) Time Delay Safety control Ionizer + (Optional) Indoor fan speed control Turbo, high, med, low, breeze. Current protection Two-direction air vane The unit will decide the louver direction according to operation mode. Low ambient cooling (Optional) Self-diag.
Outdoor unit Power relay control The unit has 3 mins delay between continuously ON/OFF operations. Low noise air flow system Bird tail propeller fan makes the outdoor unit run more quietly. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. Anti-rust cabinet Made from electrolytic zinc steel sheet and anti-rust coated components.
3. Dimension 3.1 Indoor Units Model W(mm) H(mm) D(mm) MS9A-09HRDN1-MP0W MS9A-9HRDN1-BQ0W 790 (31.10in) 265 (10.43in) 198 (7.80in) MS9A-9CRDN1-BS0W MS9A-9HRDN1-BS0W MS9A-12HRDN1-MP0W MS9A-12CRDN1-BS0W MS9A-12HRDN1-BS0W MS9A-12CRDN1-MS0W MS9A-12HRDN1-MS0W MS9A-12HRDN1-BS0W(B) 920 (36.22in) 292 (11.50in) 223 (8.78in) MS9A-18HRDN1-MP0W MS9A-18CRDN1-MS0W MS9A-18HRDN1-MS0W MS9A-24HRDN1-MP0W MS9A-24CRDN1-MP0W 998 (39.29in) 322 (12.68in) 240 (9.45in) MS9A-24HRDN1-MS0W 1450 (57.09in) 340 (13.
L R H Model L(mm) R(mm) H(mm) Dimension of installation hole(mm) MS9A-09HRDN1-MP0W MS9A-9HRDN1-BQ0W 100 151 45 Φ65 Model L(mm) R(mm) H(mm) Dimension of installation hole(mm) 150 187 45 Φ65 MS9A-9CRDN1-BS0W MS9A-9HRDN1-BS0W MS9A-12HRDN1-MP0W MS9A-12CRDN1-BS0W MS9A-12HRDN1-BS0W MS9A-12CRDN1-MS0W MS9A-12HRDN1-MS0W MS9A-12HRDN1-BS0W(B) 10
Model L(mm) R(mm) H(mm) Dimension of installation hole(mm) 100 119 45 Φ65 MS9A-18HRDN1-MP0W MS9A-18CRDN1-MS0W MS9A-18HRDN1-MS0W MS9A-24HRDN1-MP0W MS9A-24CRDN1-MP0W Model L(mm) H(mm) Dimension of installation hole(mm) MS9A-24HRDN1-MS0W 120.
3.2 Outdoor Units More than 30cm More than 60cm (Service space More than 30cm Fe n ob ce o sta r cle s More than 60cm More than 70cm Model W(mm) D(mm) H(mm) W1(mm) A(mm) B(mm) 760 (29.92in) 285 (11.22in) 590 (23.23in) 823 (32.40in) 530 (20.87in) 290 (11.42in) 845 (33.27in) 320 (12.60in) 700 (27.56in) 908 (35.75in) 560 (22.05in) 335 (13.19in) 900 (35.43in) 315 (12.40in) 860 (33.86in) 980 (38.58in) 590 (23.23in) 333 (13.
4.
For heat pump models: INDOOR OUTDOOR CHECK VALVE (Heating Model only) LIQUID SIDE 2-WAY VALVE CAPILIARY TUBE HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) GAS SIDE REVERSING VALVE (Heating Model only) 3-WAY VALVE ACCUMULATOR COOLING COMPRESSOR 14 HEATING
5. Wiring Diagram 5.
MS9A-18HRDN1-MP0W;MS9A-18CRDN1-MS0W;MS9A-18HRDN1-MS0W; MS9A-24HRDN1-MP0W 16
MS9A-9HRDN1-BQ0W MS9A-12HRDN1-BS0W(B) 17
MS9A-24CRDN1-MP0W 18
MS9A-24HRDN1-MS0W 19
5.
MOC-12CRDN1-MSOW MOC-12HRFN1-MS0W 21
MOF-18HDN1-MP0W MOF-18CRFN1-MSOW 22
MOF-18HRFN1-MS0W MOG-24HDN1-MP0W 23
MOC-09HFN1-BQ0W, MOC-12HFN1-BS0W MOF-24HDN1-MP0W 24
MOG-24HDN1-MS0W MOF-24CDN1-MP0W 25
6. Installation details 6.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N.cm N.cm Ф6.35 1/4 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 3/8 2500(255kgf.cm) 2600(265kgf.cm) Ф12.7 1/2 3500(357kgf.cm) 3600(367kgf.cm) Ф16 5/8 4500(459kgf.cm) 4700(479kgf.cm) Ф19 3/4 6500(663kgf.cm) 6700(683kgf.
6.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) >3 and ≤6 0.75 >6 and ≤10 1 >10 and ≤16 1.5 >16 and ≤25 2.5 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit. Please refer to the nameplate before selecting the cable, fuse and switch.
6.3 Pipe length and the elevation The pipe length and refrigerant amount: Model Connective Air purging method Additional amount of refrigerant to be charged pipe length All Less than 5m Use vacuum pump ------------------ 9K/12K More than 5m Use vacuum pump (Pipe length – 5) × 20g/m 18K/24K More than 5m Use vacuum pump (Pipe length – 5) × 40g/m Standard Max. Max.
6.4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below: Pressure in the system rises. Operating current rises. Cooling or heating efficiency drops. Moisture in the refrigerant circuit may freeze and block capillary tubing. Water may lead to corrosion of parts in the refrigerant system. Therefore, the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the system.
the meter does not indicate -0.1Mpa after pumping 30 minutes, it should be pumped 20 minutes more. If the pressure can’t achieve -0.1Mpa after pumping 50 minutes, please check if there are some leakage points. Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump. Confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump).
Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2-way valve approximately 45’ until the gauge indicates 0.3 to 0.5 Mpa. 6). Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position. Be sure to use a hexagonal wrench to operate the valve stems. 7). Mount the valve stems nuts and the service port cap. Be sure to use a torque wrench to tighten the service port cap to a torque 18N·m.
6).When the electronic scale displays the proper weight (refer to the table), disconnect the charge hose from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the hose. 7). Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to check for gas leakage. 6.5 Adding the refrigerant after running the system for many years Electronic scale Procedure: 1).
6).When the electronic scale displays the proper weight (refer to the gauge and the pressure of the low side), disconnect the charge hose from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the hose. 7). Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to check for gas leakage. 6.6 Re-installation while the indoor unit need to be repaired 1.
5). Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0.1MPa. 6). Set the 3-way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0.3 to 0.5Mpa. Disconnect the charge set, and tighten the 2-way and 3-way valve’s stem nuts. Use a torque wrench to tighten the 3-way valves service port cap to a torque of 1.8 kgf.m. Be sure to check for gas leakage. 2. Air purging by the refrigerant Procedure: 1).
Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2-way valve approximately 45’ until the gauge indicates 0.3 to 0.5 Mpa. 6). Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems. 7). Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N.m.
2. Refrigerant charging Electronic scale Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge. 2).
Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to check for gas leakage.
7. Operation characteristics CAUTION: 1. If air conditioner is used outside of the above conditions, certain safety protection features may come into operation and cause the unit to function abnormally. 2. Room relative humidity less than 80%. If the air conditioner operates in excess of this figure, the surface of the air conditioner may attract condensation. Please sets the vertical air flow louver to its maximum angle (vertically to the floor), and set HIGH fan mode. 3.
8. Electronic function 8.1 Abbreviation T1: Indoor room temperature T2: Coil temperature of evaporator T3: Coil temperature of condenser T4: Outdoor ambient temperature T5: Compressor discharge temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. OPERATION indication lamp: This lamp illuminates when the air conditioner is in operation. AUTO indication lamp: Lights up during the Auto operation.
DEFROST indication lamp (For cooling & heating models only): Lights up when the air conditioner starts defrosting automatically or when the warm air control feature is activated in heating operation. DIGITAL DISPLAY: Displays the current setting temperature and malfunction/protection code when the air conditioner is in operation. Frequency display: This display is separated into five zones. The zones illuminate based on the compressor current frequency.
8.3.6 Indoor fan delayed open function When the unit starts up, the louver will be active immediately and the indoor fan will open 10s later. If the unit runs in heating mode, the indoor fan will be also controlled by anti-cold wind function. 8.3.7 Compressor preheating functions Preheating permitting condition: If T4(outdoor ambient temperature) 3 and the machine connects to power supply newly or if T4 3 and compressor has stopped for over 3 hours, the compressor heating cable will work.
8.4.2 Cooling Mode 8.4.2.1 Compressor running rules: The operation frequency of compressor after starting submits to following rule. Fmax=F4 45 43 Fmax=F7 40 38 Fmax=F8 30 28 Fmax=F6 22 20 Fmax=F3 If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7 minutes according to the outdoor ambient temp. During the 7 minutes, the frequency limitation is active. 7 minutes later, the compressor running frequency will be controlled as below: 3.5 A 3.0 B 2.5 C 2.
Note: When T1-Ts keeps in the same temp. zone for 3 minutes, the compressor will run as the below rules: A~E: Increase the frequency to the higher level until to F8. F: Keep the current frequency. G: Decrease the frequency to the lower level until to F1. H: Run at F1 for 1h.(if T1-Ts<-2 , the compressor will stop) Meanwhile, the compressor running frequency is limited by the current. Off I3COOL Decrease I2COOL Hold I1COOL Resume Off: Compressor stops.
auto. Auto fan in cooling mode acts as follow: 4 High 3 Medium 1.5 1 Low 8.4.2.4 Condenser high temperature T3 protection. ---55 60 for 5 seconds, the compressor will stop until T3<52 . 8.4.2.5 Evaporator low temperature T2 protection.
8.4.3 Heating Mode 8.4.3.1 Compressor running rules: The maximum operation frequency of the compressor after starting submits to the following rule. 34 33 28 27 Off Fmax=F2 25 24 Fmax=F3 22 21 Fmax=F4 19 18 Fmax=F5 17 16 Fmax=F6 15 14 Fmax=F7 12 11 Fmax=F8 6 5 Fmax=F9 Fmax=F10 If users switch on AC by remote controller, the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp. During the 7 minutes, the frequency limitation is active.
H H +5.0 +4.5 G +3.5 +3.0 F +2.5 E +2.0 D C +1.5 B +1.0 +0.5 A While ∆T=0 Temp. zone A B C D E F G Frequency F10 F9 F8 F7 F5 F3 F1 as factory setting. Note: When T1-Ts keeps in the same temp. zone for 3 minutes, the compressor will run as the below rules: A~E: Increase the frequency to the higher level until to F10. F: Keep the current frequency. G: Decrease the frequency to the lower level until to F1. H: Run at F1 for 1h.
Off I3HEAT Decrease I2HEAT Hold I1HEAT Resume Off: Compressor stops. Decrease: Decrease the running frequency to the lower level. Hold: Keep the current frequency. Resume: No limitation for frequency. Note: When AC is in “hold” zone for 3 minutes, the compressor frequency will rise to the higher level. (The frequency will increase twice at most) 8.4.3.
8.4.3.3 Indoor fan running rules: Setting 44 38 37 Low 34 33 Breeze 17 Off If the compressor stops caused by the room temperature rising, the indoor fan will be forced to run 127 seconds with breeze. During this period, the anti-cold-wind is disabled. If the machine runs in rating capacity test mode, the indoor fan will run with rating speed and the anti-cold-wind function is disabled. Indoor fan speed can be set as high, medium, low or auto fan and the anti-cold-wind function is preferential.
The units run with T3 3 for 80 minutes and T3 keeps lower than TCDI+2 for more than 3 minutes. While TCDI= 6 . ----T4 0 , If the 1st condition and 2nd condition items are satisfied, then the program judges if T2 has decreased more than 5 .When T2 has decreased more than 5 , enter the defrosting mode.
Defrosting action For 18k, 24k models: Model FD FD1 MS9A-18HRDN1-MS0W, 60 70 90 100 MS9A-24HRDN1-MS0W MS9A-18HRDN1-MP0W MS9A-24HRDN1-MP0W MS9A-24CRDN1-MP0W 50
For other models: 8.4.3.5 Evaporator coil temperature protection ----T2> TEH2 , the compressor running frequency decreases to the lower level and runs for 20s. When the frequency decreases to F2 and the T2 is still over TEH2 for 3 minutes, the compressor will stop. ----T2<48 or T2 stays in 48 ~ TEH2 for 6 minutes, the frequency will not be limited by T2. ----T2>60 , the compressor will stop and restart when T2<48 .
∆T 1 Cooling -1<∆T≤1 Fan-only ∆T≤-1 Heating Indoor fan will run at auto fan of the relevant mode. The louver operates same as in relevant mode. If the machine switches mode between heating and cooling, the compressor will keep stopping for 15 minutes and then choose mode according to T1-Ts. If the setting temperature is modified, the machine will choose running function again. 8.4.5 Drying mode 8.4.5.1 Indoor fan speed is fixed at breeze and can’t be changed.
When the machine is off, pressing the touch button will carry the machine to forced auto mode. After this, pressing the button once again within 5 seconds, the machine will turn into forced cooling mode. In forced auto, forced cooling or any other operation mode, pressing touch button will turn off the machine. 8.4.6.2 In forced operation mode, all general protections and remote control are available. 8.4.6.
When heating, the setting temperature decreases 1 (be higher than 17 ) every one hour, 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed. (Anti-cold wind function has the priority) 8.4.8.3 Timer setting is available 8.4.8.4 When user uses timer off function in sleep mode (or sleep function in timer off mode), if the timing is less than 7 hours, sleep function will be cancelled when reaching the setting time.
9. Troubleshooting 9.
9.2 Diagnosis and Solution 9.2.
9.2.2 Indoor unit and outdoor unit communication protection error diagnosis and solution Power off, then power on the A/C by the breaker.(reconnect the power wire). Is the E1 extinguished? No Check the wiring on the outdoor terminal and indoor terminal follow the wiring diagram. Is all the connecting correctly? Yes No -24V
9.2.3 Fan speed has been out of control diagnosis Shut off the power supply and turn on it 5s later The unit does not work normally Turn off the unit, rotate the cross fan. Does it rotate freely? No Disassemble the connection between fan and motor, check if the bearing is normal. If not, change the bearing. If yes, follow the below step. Yes Is the fan motor connector and connection good? Yes Is the voltage being applied to the fan motor? Yes Replace the fan motor No Replace the PCB 9.2.
9.2.5 IGBT over-strong current protection diagnosis and solution Check whether the connections between outdoor PCB and IPM are good? Yes No Check whether the IPM is fixed to radiator tightly Replace the IPM Fastening the IPM to the radiator The unit does not work normally Replace the compressor 9.2.6 Over voltage or too low voltage protection diagnosis and solution No Is the power supply good? Make sure the power supply is normal. Yes Replace the outdoor e-box. 9.2.
9.2.8 Inverter compressor drive error diagnosis and solution Is the connection of compressor good? Is the wiring sequence right? The voltage range proper? No Reconnect and retry Yes Replace the outdoor PCB No Replace inverter compressor. 9.2.9 Zero crossing detection error This is alarm signal when the main chip can’t detect over-zero signal. When such failure occurs, the main control board must have fault.
Appendix: 10 11 12 13 14 15 16 F 48 50 52 54 56 58 60 17 18 19 20 21 22 23 F 62 64 66 68 70 72 74 24 25 26 27 28 29 30 F 76 78 80 82 84 86 88 31 32 33 34 35 F 90 92 94 96 98 61
