KSIN INVERTER SERIES Service Manual 2013
CONTENTS 1. Precaution ................................................................ ................................ ................................ .............. 1 1.1 Safety Precaution .......................................................................................................................... 1 1.2 Warning ......................................................................................................................................... 1 2. Function .............................
1. Precaution 1.1 Safety Precaution To prevent injury to the user or other people and property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before service unit, be sure to read this service manual at first. 1.2 Warning Installation 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. For installation, always contact the dealer or an Authorized service center. There is risk of fire, electric shock, explosion, or injury. Do not install the product on a defective installation stand. It may cause injury, accident, or damage to the product. 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. 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. 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. Do not open the inlet grill of the product during operation.
It can avoid vibration of water leakage. 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. Use two or more people to lift and transport the product. Avoid personal injury. Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product.
operated. There are sharp and moving parts that could cause personal injury. Do not drink the water drained from the product. It is not sanitary could cause serious health issues. Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury. Replace the all batteries in the remote control with new ones of the same type. Do not mix old and mew batteries or different types of batteries. There is risk of fire or explosion.
2.
Filter Killer Of Formaldehyde Ionizer(O) Louver Position Memory Function Silver Ico Filter(O) Refrigerant Leakage Detect Vitamin C Filter(O) Self-diag.
3. Dimension 3.
L R H Model R(mm) L(mm) H(mm) 92 170 45 Dimension of installation hole(mm) KSIN009-C115-I KSIN009-H115-I KSIN009-C215-I KSIN009-H215-I KSIN012-C115-I KSIN012-H115-I KSIN012-C215-I ￠65 95 170 45 80 100 45 KSIN012-H215-I KSIN018-C215-I KSIN018-H215-I R L H Model KSIN024-C215-I KSIN024-H215-I R(mm) L(mm) H(mm) Dimension of installation hole(mm) 163 293 45 ￠65 9
3.
KSIN018-H215-O 760 285 590 823 530 290 KSIN024-C215-O 845 320 700 908 560 335 KSIN024-H215-O 845 320 700 908 560 335 11
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 13 HEATING
5. Wiring Diagram 5.
KSIN009-C115-I, KSIN009-H115-I, KSIN012-C115-I, KSIN012-H115-I KSIN018-C215-I, KSIN018-H215-I 15
KSIN024-C215-O, KSIN024-H215-O 16
5.
KSIN018-C215-O, KSIN018-H215-O 18
KSIN024-C215-O, KSIN024-H215-O 19
6. Installation details 6.1 Wrench torque sheet for installation Additional Outside diameter Torque tightening torque mm inch Ф6.35 1/4 Ф9.52 3/8 Ф12.7 1/2 N.cm N.cm 1500 1600 (153kgf.cm) (163kgf.cm) 2500 2600 (255kgf.cm) (265kgf.cm) 3500 3600 (357kgf.cm) (367kgf.cm) 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 (mm)² >3 and ≤6 0.75 >6 and ≤10 1.
6.3 Pipe length and the elevation The pipe length and refrigerant amount: Pipe size Model Standard length (m) Max. Elevation B (m) Max. Length A (m) Additional refrigerant (g/m) Gas Liquid KSIN009-H215-I + KSIN009-H215-O 3/8’’ (Ф9.52) 1/4’’ (Ф6.35) 5 8 20 20 KSIN009-C115-I + KSIN009-C115-O 3/8’’ (Ф9.52) 1/4’’ (Ф6.35) 5 8 20 20 KSIN009-C215-I + KSIN009-C215-O 3/8’’ (Ф9.52) 1/4’’ (Ф6.35) 5 8 20 20 KSIN009-H115-I + KSIN009-H115-O 3/8’’ (Ф9.52) 1/4’’ (Ф6.
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 18N.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.
7. Operation characteristics Temperature Mode Room temperature Cooling operation Heating operation ≥17℃(62℉) ≤30℃(86℉) Drying operation ＞10℃(50℉) 0℃～50℃ (32℉～122℉) Outdoor temperature -15℃～50℃(5℉～122℉) (For the models with -15℃～30℃ 0℃～50℃ (5℉～86℉) (32℉～122℉) low temperature cooling system) 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.
8. Electronic function 8.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger 8.2 Display function 8.2.1 Icon explanation on indoor display board. One of the following figures matches its display board . Run indicator Flash at 0.5Hz when the unit is standby. Illuminate when the unit is turned on. Timer indicator This indicator illuminates when TIMER is set ON/OFF.
8.3 Main Protection 8.3.1 Three Minutes Delay at restart for compressor 1 minute delay for the 1st time start-up and 3 minutes delay for others. 8.3.2 Temperature protection of compressor top The unit will stop working when the compressor top temp. protector cut off, and will restart after the compressor top temp. protector restart. 8.3.3 Temperature protection of compressor discharge When the compressor discharge temp.
If T4＞5℃ or the compressor starts running, the preheating function will stop. 8.3.8 Zero crossing detection error protection If AC detects time interval is not correct for continuous 240s, the unit will stop and the LED will display the failure. The correct zero crossing signal time interval should be between 6-13ms. 8.4 Operation Modes and Functions 8.4.1 Fan mode (1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed.
8.4.2 Cooling Mode 8.4.2.1 Compressor running rules The maximum operation frequency of compressor after starting submits to following rule. Fmax=F4 45 43 Fmax=F7 40 38 Fmax=F8 31.5 29.5 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 2.
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. Decrease: Decrease the running frequency to the lower level. Hold: Keep the current frequency. Resume: No limitation for frequency.
4 High 3 Medium 1.5 1 Low 8.4.2.4 Condenser temperature protection ---55℃60℃ for 5 seconds, the compressor will stop until T3<52℃. 8.4.2.5 Evaporator temperature protection ---T2<0℃, the compressor will stop and restart when T2>=5℃.
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 +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 the zones of A,B,C... are corresponding to different compressor running frequency. ΔT=0℃ as default. 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.
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) 8.4.3.2 Outdoor fan running rules 17 Low 15 High 8.4.3.
Indoor fan speed can be set as high, medium, low or auto fan and the anti-cold-wind function is preferential. Auto fan action in heating mode: Low 2.5 2 Medium 1.5 1 High 8.4.3.4 Defrosting mode Condition of defrosting: ----T4＞0℃, When the units are running, if the following two items are satisfied, the units start defrosting: The units run with T3＜3℃ for 40 minutes and T3 keeps lower than TCDI℃ for more than 3 minutes.
Defrosting action： For 9k,12k models: Frequency F2 FrequencyF8 on Compressor 4-way valve Outdoor fan Indoor fan off on off on off on off Indoor fan breeze(10s) 10s xx 10s no longer than 10m XX=60.
For 18k,22k models: Frequency F2 Frequency F8 on Compressor 4-way valve Outdoor fan Indoor fan off on off on off on off Indoor fan breeze(10s) 10s xx 10s no longer than 10m XX=60 for 18k model, XX=90 for 22k model.
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℃. 8.4.
2.5 F3 2.0 1.5 F2 1.0 0.5 F1 0.0 F1 8.4.5.3 Low indoor room temperature protection In drying mode, if room temperature is lower than 10℃, the compressor will stop and not resume until room temperature exceeds 12℃. 8.4.5.4 Evaporator anti-freezing protection, condenser high temperature protection and outdoor unit frequency limit are active and the same as that in cooling mode. 8.4.5.5 The outdoor fan operates the same as in cooling mode. 8.4.6 Forced operation function 8.4.6.
8.4.7.3 Timer off. The machine will turn off automatically when reaching the setting time. 8.4.7.4 Timer on/off. The machine will turn on automatically when reaching the setting “on” time, and then turn off automatically when reaching the setting “off” time. 8.4.7.5 Timer off/on. The machine will turn off automatically when reaching the setting “off” time, and then turn on automatically when reaching the setting “on” time. 8.4.7.6 The timer function will not change the AC current operation mode.
8.4.10 8℃ Heating(optional) In heating operation, the preset temperature of the air conditioner can be as lower as 8℃, which keeps the room temperature steady at 8℃ and prevents household things freezing when the house is unoccupied for a long time in severe cold weather. 8.4.
9. Troubleshooting 9.
9.2 Diagnosis and Solution 9.2.1 EEPROM parameter error diagnosis and solution(E0/F4) Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Yes If the EEPROM chip is welded on main PCB, replace the main PCB directly. Otherwise, check whether the EEPROM chip plugged in main PCB well? No Correct the connection. Yes Replace the indoor main PCB. EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
9.2.2 Indoor / outdoor unit’s communication error diagnosis and solution(E1) Power off, then turn on the unit 5 seconds later(reconnect the power wire ).Is the error still displaying after several minutes? Yes Check all the wirings between indoor and outdoor, indoor main PCB and outdoor main PCB following the wiring diagram. Are all the wirings connected correctly? Yes Measure Vs, is it moving alternately between positive value and negative value? (Vs is the voltage between S and N of outdoor unit.
9.2.3 Zero crossing detection error diagnosis and solution(E2) Check if the connections and power supply is normal? Correct the connections. Turn on the unit when the power supply is good. No Yes Indoor main PCB is defective. Replace indoor main PCB. 9.2.4 Indoor fan speed has been out of control diagnosis and solution(E3) Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? No The unit operates normally.
Index 1: 1.Indoor AC Fan Motor Measure the resistance value of each winding by using the tester. Index2: 1: Indoor AC Fan Motor Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V power supply), the PCB must has problems and need to be replaced.
9.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E4/E5/F1/F2/F3) Check the connections between temperature sensor and main PCB. Are the connections good? No Correct the connections. Yes Check the resistance value of the sensor via table1 and table 2, is it normal? Yes Replace indoor or outdoor main PCB.
9.2.5 IPM malfunction or IGBT over-strong current diagnosis and solution(P0) Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken? Yes Correct the connection or replace the wires and connectors. No Correct the installation, tighten the screws and apply silicon grease. No Check if the IPM installed correctly. Yes IPM continuity check. Check if the IPM terminal resistance values are uniform.
9.2.6 Over voltage or too low voltage protection diagnosis and solution(P1) Check if the power supply is normal. No Disconnect the unit with power supply and try to restart the unit when power supply gets normal. No Correct the connections or replace the wires. Yes Check if all the connections and wires are good? Yes Power on and when the unit is in standby, check if the voltage between P and N is around DC 310V or 340V or 380V? For different kinds of units, the voltage differs.
9.2.7 High temperature protection of compressor top diagnosis and solution(P2) Check if the air flow system of indoor and outdoor units are obstructed? Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units. Yes No Turn off the power supply and turn it on 10 minutes later. Yes Check if the unit can start normally. Check if all the connection, especially the connection of OLP (Over Load Protector) sensor is good.
9.2.8 Inverter compressor drive error diagnosis and solution(P4) Check if the wiring between main PCB and compressor connected by error and if the wires and connectors are broken? Yes Correct the connection or replace the wires and connectors. No Correct the installation, tighten the screws and apply silicon grease. No Check if the IPM installed correctly. Yes IPM continuity check. Check if the IPM terminal resistance values are uniform.
9.2.9 Refrigerant Leakage Detection diagnosis and solution(EC) Shut off the power supply and turn it on 5 seconds later. Is it still displaying the error code? Yes Is there cool air blowing out from indoor air outlet? Check if T2 sensor is well fixed. Correct the installation or replace T2 sensor. Does the problem remain again? Yes No Yes Is there any leakage ? Especially the connection parts , such as the gas valve and the liquid valve. No Replace indoor PCB.
Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB. Note: The picture above is only for reference. The plug of your side may be different. Main parts check 1.
Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor discharge temp.(T5) sensor. Measure the resistance value of each winding by using the multi-meter. Table1:Some frequently-used R-T data for T1,T2,T3 and T4 sensor: Temperature (℃) 5 10 15 20 25 30 40 50 60 Resistance Value (KΩ) 26.9 20.7 16.1 12.6 10 8 5.2 3.5 2.
Spec.
Outdoor code 220037306370 Outdoor KSIN009-C215-O Compressor DA108X1C-23EZ Indoor fan motor RPG13B Outdoor fan motor YDK24-6KB 62
2. Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value DA108X1C-23EZ DA130M1C-31FZ DA130S1C-20FZ DA150S1C-20FZ Blue - Red 1.1Ω 0.95Ω 0.95Ω 0.
3.IPM continuity check Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the resistance between P and UVWN; UVW and N. Digital tester (+)Red (-)Black N U V W P Digital tester (+)Red Normal resistance value ∞ N W 4. ∞ (Several MΩ) (-)Black U V Normal resistance value (Several MΩ) Indoor AC Fan Motor Measure the resistance value of each winding by using the tester.
