Related Manuals for AirQ ISM-H24CODC
Summary of Contents for AirQ ISM-H24CODC
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Page 1: Service Manual
SERVICE MANUAL AirQ AIRCONDITIONER DC INVERTER SPLIT WALL-MOUNTED TYPE ISM-H24CODC V1.1 Jan, 2008... -
Page 2: Table Of Contents
4. Specification ............................. 8 5. Refrigerant cycle diagram........................9 6. Wiring diagram ............................10 6.1 Indoor Unit................................. 10 ISM-H24CODC ....................Błąd! Nie zdefiniowano zakładki. 6.2 Outdoor Unit ..............................11 ISM-H24CODC ..............................11 7. Installation details ..........................12 7.1 Wrench torque sheet for installation ........................12 7.2 Connecting the cables ............................ - Page 3 8.15 Ionizer/Plasma dust collector function(optional) ....................30 9. Troubleshooting ............................. 31 9.1 Indoor Unit Error Display ........................... 32 9.2 Diagnosis and Solution............................33 9.3 Key parts checking............................36...
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Page 4: Precaution
1. Precaution installation stand. 1.1 Safety Precaution It may cause injury, accident, or damage to the To prevent injury to the user or other people product. and property damage, the following instructions Be sure the installation area does not must be followed. deteriorate with age. - Page 5 It may cause corrosion on the product. Corrosion, arrives. particularly on the condenser and evaporator fins, There is risk of property damage, failure of product, could cause product malfunction or inefficient or electric shock. operation. Do not open the inlet grill of the product during operation.
- Page 6 The chemical in batteries could cause burns or other your skin or clothes, wash it well with clean water. Do not use the remote of the batteries health hazards have leaked.
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Page 7: Function
2. Function Indoor unit Operation by remote controller Sensing by room temperature Room temperature sensor. Pipe temperature sensor. Room temperature control Maintain the room temperature in accordance with the setting temperature. Anti-freezing control in cooling Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode Ionizer (Optional) Time Delay Safety control... - Page 8 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.
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Page 9: Dimension
3. Dimension 3.1 Indoor Unit ISM-H24CODC... -
Page 10: Outdoor Unit
3.2 Outdoor Unit ISM-H24CODC... -
Page 11: Specification
4. Specification Indoor ISM-H24CODC Outdoor ISM-H24CODC Power supply Ph-V-Hz 1,220-240V~,50Hz Capacity Btu/h 23000(7000~26000) Input 2250(620~2650) Cooling Rated current 9.8(2.8~11.8) Btu/w.h, w/w 10.3,3.01 Capacity Btu/h 24000(7500~28000) Input 2070(600~2600) Heating Rated current 9.0(2.6~11.6) 3.41 Moisture Removal Max. input consumption 2700 Max. current Starting current 14.5... -
Page 12: Refrigerant Cycle Diagram
5. Refrigerant cycle diagram... -
Page 13: Wiring Diagram
6. Wiring diagram 6.1 Indoor Unit ISM-H24CODC... -
Page 14: Ism-H24Codc
6.2 Outdoor Unit ISM-H24CODC... -
Page 15: Installation Details
7. Installation details 7.1 Wrench torque sheet for installation Outside diameter Torque inch Kgf.m Ф9.52 Ф16.0 7.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Grade Unit 7.3 Pipe length and the elevation Standard Max. - Page 16 leakage from the refrigeration cycle. Procedure Caution: 1. Recheck the piping connections. If gas leakage is discovered in step (3) above, take the 2. Open the valve stem of the 2-way valve following measures. counterclockwise approximately 90’, wait 10 If the leaks stop when the piping connections are seconds, and then set it to closed position.
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Page 17: Pumping Down (Re-Installation)
7.5 Pumping down (Re-installation) Procedure 1. Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. 2. -
Page 18: Re-Air Purging (Re-Installation)
7.6 Re-air purging (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the closed position. 2. Connect the charge set and a charging cylinder to the service port of the 3-way valve. Leave the valve on the charging cylinder closed. 3. -
Page 19: Balance Refrigerant Of The 2-Way, 3-Way Valves
7.7 Balance refrigerant of the 2-way, 3-way valves Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the open position. 2. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. -
Page 20: Evacuation
7.8 Evacuation Procedure: 1. Connect the vacuum pump to the charge set’s centre hose. 2. Evacuation for approximately one hour. Confirm that the gauge needle has moved toward -0.1 Mpa (-76 cmHg) [vacuum of 4 mmHg or less]. 3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approximately 5 minutes after turning off the vacuum pump). -
Page 21: Gas Charging
7.9 Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant). -
Page 22: Electronic Function
T3: Pipe temperature of outdoor heat exchanger T4: Outdoor ambient temperature 8.2 Display function 8.2.1 Icon explanation on indoor display board. ISM-H24CODC ISM-H24CODC ① Auto indicator This indicator illuminates when the air conditioner is in AUTO operation. ② Timer indicator This indicator illuminates when TIMER is set ON/OFF. -
Page 23: Protection
is 0~50℃. When the unit stops operation, it returns to original factory settings. Displays the malfunction code or protection code. ⑤ Frequency indicator This indicator appears only when the compressor is in operation and indicates the current operating frequency. 8.2.2 LED display control function. Pressing “LED display”... -
Page 24: Fan-Only Mode
8.4 Fan-Only Mode 8.4.1 Temperature setting function is disabled, and no setting temperature display. 8.4.2 In this mode, the action of louver is the same as in cooling mode. 8.4.3 The action of auto fan in fan-only mode is the same as auto fan in cooling mode with 24℃ setting temperature. ℃... -
Page 25: Drying Mode
ISM-H24CODC 11 A 12 A 13 A 8.5.4 Rating capacity test function 1) Set the indoor unit with remote controller as: high fan, 17℃ in cooling mode, then press “TURBO” button on controller 6 times or more within 10 seconds(make sure indoor unit receives these signals), the machine will turn into rating capacity test mode, the buzzer will make a “di”... - Page 26 8.6.4 Horizontal louver action is the same as that in cooling mode.
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Page 27: Heating Mode
8.7 Heating mode 8.7.1 Indoor fan action: Anti-cold-wind function. If the compressor stops caused by room temperature rising, indoor fan will be forced to run 127 seconds with breeze. During this period, anti-cold-wind is disabled. After this, anti-cold –wind function is available. - Page 28 I1HEAT running normally Remark: I1HEAT I2 HEAT I3 HEAT ISM-H24CODC 12 A 13 A 8.7.5 Indoor heat exchanger high temperature protection. If T2＞60℃, the compressor will stop and not resume until T2＜48℃. 9.7.6 Defrosting mode Condition of defrosting.
- Page 29 T3 rises to be higher than 12℃. T3 rises to be higher than 8℃ and remains for 80 seconds. The machine has run for 10 minutes in defrosting. 8.7.7 Defrosting action compressor 4-way valve outdoor fan indoor fan indoor fan breeze 10s no longer than 10 minutes 8.7.8 Rating capacity test function Set the indoor unit with remote controller as: high fan, 30℃...
- Page 30 Elevate current frequency(excluding F8) to a higher grade. If indoor fan is in low speed or pause caused by defrosting or anti-cold-wind function, frequency of compressor will not be elevated one grade until these limit has been released. Indoor fan changes to turbo speed and anti-cold-wind function is valid. After running for 30 minutes the machine will turn back to previous setting mode.
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Page 31: Auto Mode Function
8.8 Auto mode function 8.8.1 This mode can be chosen with remote controller and the setting temperature can be changed between 17~30℃. In auto mode, the machine will choose cooling, heating or fan-only mode according to ∆T(∆T =T1-Ts). ∆T=T1-Ts Running mode Cooling ∆T＞1℃... -
Page 32: Timer Function
℃ ℃ high high Outdoor fan action in heating mode Outdoor fan action in cooling & drying mode (including heating in auto mode). (including cooling in auto & forced mode). 8.11.3 Outdoor fan action in cooling & drying mode(including cooling in auto & forced mode). Please refer to the pic. -
Page 33: Ionizer/Plasma Dust Collector Function(Optional)
8.15 Ionizer/Plasma dust collector function(optional) The indoor unit is equipped with Ionizer, which is controlled by the CLEAN AIR button on the remote controller when the unit is turned on. Press the CLEAN AIR button to activate the function. Press it again to stop the function. During the time when Ionizer being controlled by remote controller, Ionizer will be turned off automatically, if indoor fan stops running due to malfunctions or anti-cold-wind. -
Page 34: Troubleshooting
9. Troubleshooting Safety Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down the power supply, electricity power still are kept in capacitors, do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Bulb (25-40W) -
Page 35: Indoor Unit Error Display
9.1 Indoor Unit Error Display Display LED STATUS EEPROM parameter error Indoor / outdoor units communication protection Zero-crossing signal error Fan speed out of control Open or short circuit of outdoor temperature sensor Open or short circuit of room or evaporator temperature sensor IGBT over-strong current protection Over voltage or too low voltage protection Temperature protection of compressor top. -
Page 36: Diagnosis And Solution
9.2 Diagnosis and Solution 9.2.1 E0(EEPROM parameter error) error diagnosis and solution Circuit or software error on indoor PCB Replace indoor PCB 9.2.2 E1(indoor / outdoor units communication protection) error diagnosis and solution Disconnect the power supply, after 1 minute, connect the power supply, turn on the unit with remote controller Does the unit work normally? - Page 37 9.2.4 E3(indoor fan speed out of control) diagnosis and solution Is the indoor fan motor Repair the connector and connector and connection reconnect good? Is voltage being applied to the fan motor? Indoor PCB is defective. (rang 90v-160v between Replace the indoor PCB. mid pin and N on CN1 Replace the indoor fan motor...
- Page 38 9.2.8 P1(over voltage or too low voltage protection) diagnosis and solution. Be sure the power supply is Is the power supply good? normal when using the units Replace the outdoor e-box. 9.2.9 P2(temperature protection of compressor top) diagnosis and solution. Is the connection Does compressor Reconnect and retest.
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Page 39: Key Parts Checking
9.3 Key parts checking. 9.3.1. Compressor checking (Model: C-6RZ146H1A) Measure the resistance value of each winding by using the multi-meter. Position Resistance Value Blue - Red 0.452 Blue - Black (25 ) Red - Blue 9.3.2 Outdoor Fan Motor (Model: YDK53-6N) Measure the resistance value of each winding by using the multi-meter. - Page 40 9.3.4 Temperature Sensors. Room temp.(T1) sensor, Indoor coil temp.(T2) sensor, Outdoor coil temp.(T3) sensor, Outdoor ambient temp.(T4) sensor, Compressor exhaust temp.(Te) sensor. Measure the resistance value of each winding by using the multi-meter. Some frequently-used R-T data for T1, T2, T3 and T4 sensor: Temperature (℃) Resistance Value (K ) 26.9...
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