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AirQ ISM-H24CODC Service manual

Manual is about: AIRCONDITIONER DC INVERTER SPLIT WALL-MOUNTED TYPE

Summary of ISM-H24CODC

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    Service manual airq airconditioner dc inverter split wall-mounted type ism-h24codc v1.1 jan, 2008.

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    Contents 1. Precaution................................................................................................................................................. 1 1.1 safety precaution ...............................................................................................................

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    8.15 ionizer/plasma dust collector function(optional) .............................................................................................. 30 9. Troubleshooting ....................................................................................................................................

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    1 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 warn...

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    2 arrives. There is risk of property damage, failure of product, or electric shock. Do not open the inlet grill of the product during operation. (do not touch the electrostatic filter, if the unit is so equipped.) there is risk of physical injury, electric shock, or product failure. When the product...

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    3 your skin or clothes, wash it well with clean water. Do not use the remote of the batteries have leaked. The chemical in batteries could cause burns or other health hazards.

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    4 2. Function when the power supply is interrupted and then restore, the air conditioners automatically restore the previous function setting. Tele remote control (optional) maintain the room temperature in accordance with the setting temperature. The mode can be change by the room temperature. The ...

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    5 it protects the valves and prevents water from dripping. The unit has 3 mins delay between continuously on/off operations. Outdoor unit power relay control the hydrophilic fin can improve the heating efficiency at operation mode. Hydrophilic aluminum fin it is only operated in the heating operatio...

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    6 3. Dimension 3.1 indoor unit ism-h24codc.

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    7 3.2 outdoor unit ism-h24codc.

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    8 4. Specification indoor ism-h24codc outdoor ism-h24codc power supply ph-v-hz 1,220-240v~,50hz capacity btu/h 23000(7000~26000) input w 2250(620~2650) rated current a 9.8(2.8~11.8) cooling eer btu/w.H, w/w 10.3,3.01 capacity btu/h 24000(7500~28000) input w 2070(600~2600) rated current a 9.0(2.6~11....

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    9 5. Refrigerant cycle diagram.

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    10 6. Wiring diagram 6.1 indoor unit ism-h24codc.

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    11 6.2 outdoor unit ism-h24codc.

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    12 7. Installation details 7.1 wrench torque sheet for installation outside diameter torque mm inch kgf.M Ф9.52 3/8 4.2 Ф16.0 5/8 6.6 7.2 connecting the cables the power cord of connect should be selected according to the following specifications sheet. Grade unit 9k 12k 18k 24k mm 2 1.5 1.5 2.5 2.5...

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    13 leakage from the refrigeration cycle. Procedure 1. Recheck the piping connections. 2. Open the valve stem of the 2-way valve counterclockwise approximately 90’, wait 10 seconds, and then set it to closed position. Be sure to use a hexagonal wrench to operate the valve stem. 3. Check for gas leaka...

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    14 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. Operate the unit fo...

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    15 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. Air purging. Open the valve...

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    16 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 servi...

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    17 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,...

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    18 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 ...

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    19 8 electronic function 8.1 abbreviation t1: indoor ambient temperature t2: pipe temperature of indoor heat exchanger 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 in...

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    20 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 functi...

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    21 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. 8.5 c...

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    22 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 rati...

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    23 8.6.4 horizontal louver action is the same as that in cooling mode..

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    24 8.7 heating mode 8.7.1 indoor fan action: 1) anti-cold-wind function. 2) 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. 3) if th...

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    25 zone h: compressor stops after running with f1 for 60 minutes or when ∆th ＞6℃. 8.7.4 outdoor unit current control in heating mode. Remark: i1heat i2 heat i3 heat ism-h24codc 11a 12 a 13 a 8.7.5 indoor heat exchanger high temperature protection. If t2 ＞60℃, the compressor will stop and not resume ...

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    26 a) t3 rises to be higher than 12 ℃. B) t3 rises to be higher than 8 ℃ and remains for 80 seconds. C) the machine has run for 10 minutes in defrosting. 8.7.7 defrosting action 8.7.8 rating capacity test function 1) set the indoor unit with remote controller as: high fan, 30 ℃ in heating mode, then...

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    27 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. 1) indoor fan changes to turbo speed and anti-cold-wind fu...

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    28 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 ∆t ＞1℃ cooling - 1≤∆t≤1℃ heating ∆t ＜-1...

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    29 8.11.3 outdoor fan action in cooling & drying mode(including cooling in auto & forced mode). Please refer to the pic. Above. 8.12 timer function 8.12.1 timing range is 24 hours, and the minimum resolution is 15 minutes. 8.12.2 timer on. After turning off, the machine will turn on automatically wh...

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    30 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 tim...

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    31 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!) b...

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    32 9.1 indoor unit error display display led status e0 eeprom parameter error e1 indoor / outdoor units communication protection e2 zero-crossing signal error e3 fan speed out of control e5 open or short circuit of outdoor temperature sensor e6 open or short circuit of room or evaporator temperature...

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    33 9.2 diagnosis and solution 9.2.1 e0(eeprom parameter error) error diagnosis and solution 9.2.2 e1(indoor / outdoor units communication protection) error diagnosis and solution 9.2.3 e2(zero-crossing signal error) diagnosis and solution disconnect the power supply, after 1 minute, connect the powe...

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    34 9.2.4 e3(indoor fan speed out of control) diagnosis and solution 9.2.5 e5(open or short circuit of outdoor temperature sensor) diagnosis and solution. 9.2.6 e6(open or short circuit of room or evaporator temperature sensor) diagnosis and solution. 9.2.7 p0(igbt over-strong current protection) dia...

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    35 9.2.8 p1(over voltage or too low voltage protection) diagnosis and solution. 9.2.9 p2(temperature protection of compressor top) diagnosis and solution. 9.2.10 p4(inverter compressor drive error) diagnosis and solution. Is the connection of compressor good? Is the wiring sequence right? The voltag...

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    36 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. 9.3.2 outdoor fan motor (model: ydk53-6n) measure the resistance value of each winding by using the multi-meter. Position resistance value blue - red blue...

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    37 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...