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Refrigerant System Diagram

4-1 Cooling & Heating

➢

Cooling Mode

Indoor Unit

Outdoor Unit

➢

Cooling Cycle

Indoor heat exchanger

(Evaporation)

Steam-gas of low pressure

Liquid of low

pressure

(also a little gas)

Capillary

(Throttling)

Super cooled liquid of high

pressure

Gas of high pressure

& temperature

Outdoor heat exchanger

(Condensation)

Compressor

(Compression)

4-way valve

(Heat pump only)

Содержание JHKF09ZEEBXFORX

Страница 1: ...HIGH WALL INVERTER Service Manual New Released Form MHKFEEBXFORX 20210419 High Wall Inverter50Hz R 32 JHKF09 12 18 24ZEEBXFORX Issue Date Apr 19 2021 ...

Страница 2: ...Part II Installation and Maintenance 12 5 Main Tools for Installation and Maintenance 12 6 Installation 13 6 1 Notes for Installation 13 6 2 Installation of Indoor Unit 14 6 3 Installation of outdoor Unit 17 6 4 Check after installation and test operation 20 7 Maintenance 22 7 1 Troubleshooting Guide 22 7 2 Display error code of outdoor unit s indicator lights 53 7 3 Troubleshooting for Normal Mal...

Страница 3: ...1 Part I Technical Information 1 Summary 1 1 Appearance Indoor Unit Outdoor Unit 9 12K 18K 24K ...

Страница 4: ...FORX 2 Outline Dimension Diagram The following data is for reference only and the actual size may vary Indoor Unit Cooling capacity Boundary Dimension W H D mm Package Size W H D mm 09K 750 285 200 820 347 277 12K 750 285 200 820 347 277 18K 900 310 225 970 382 302 24K 1082 330 233 1155 397 312 ...

Страница 5: ...f the front shape after normal installation width height depth mm An example of the dimension measurement is shown in the figure a Width direction Width 1 Not include the size of the stop valve Width 2 Include the size of the stop valve b Height direction including the height of the mounting foot c Depth direction not include the size of mounting foot but include the size of the large area parts s...

Страница 6: ...rol 3 1 P Style 1 Remote Controller Introductions Read this instructions carefully so that you can use the air conditioner safely and correctly Take good care of the instructions11 so that it can be referred to at any time ...

Страница 7: ...contains almost all of the function buttons They may be slightly different from material abject depend on model 1 ON OFF button You can start or stop the air conditioner by pressing this button 2 SPEED button You can select fan speed as the following 3 SWING button Press this button the vertical wind direction vanes can rotate automatically when you have the desired horizontal wind direction press...

Страница 8: ...r turn on including mode temperature swing fan speed and etc The LCD will displays all your setting and keep it when the timer reach to the set time the air conditioner will be working according to your set automatically Setting the OFF timer time a When remote controller is at on state press TIMER button the LCD displays TIMER OFF and the timer time the range of setting time is O 5h to 24h b You ...

Страница 9: ...on of your choice 13 HEALTH button Press this button you can turn on or off the health function 14 Anti FUNGUS button This A C has special dry and anti mold function which has yes or no two selections This function is controlled by the remote controller under cooling dry and auto cooling and dry modes the horizontal wind guiding bars are at the initial position for cooling The A C runs under heati...

Страница 10: ...To take place of the previous operation mode just do it as shown above 16 button The temperature is displayed by default in Celsius To set the temperature display to Fahrenheit Press and MODE buttons at the same time for at least 3 seconds whether the remote controller is on or off Press and MODE buttons at the same time again for at least 3 seconds to restore the temperature display to Celsius No...

Страница 11: ...l of the remote control maybe you press one button without any reaction well the air conditioner you bought hasn t this function 3 Attention 1 Aim the remote controller towards the receiver on the air conditioner 2 The remote controller should be within 8 meters away from the receiver 3 No obstacles between the remote controller and receiver 4 00 not drop or throw the remote controller 5 00 not pu...

Страница 12: ...Cooling Cycle Indoor heat exchanger Evaporation Steam gas of low pressure Liquid of low pressure also a little gas Capillary Throttling Super cooled liquid of high pressure Gas of high pressure temperature Outdoor heat exchanger Condensation Compressor Compression 4 way valve Heat pump only ...

Страница 13: ...eat exchanger Evaporation Gas of high pressure temperature Super cooled liquid of low pressure Capillary Throttling Super cooled liquid of high pressure Steam gas of low pressure Outdoor heat exchanger Condensation Compressor Compression 4 way valve Heat pump only ...

Страница 14: ...12 Part II Installation and Maintenance 5 Main Tools for Installation and Maintenance ...

Страница 15: ...ors and windows of the neighbors as well as the green plants Requirements for operations at raised height When carrying out installation at 2m or higher above the base level safety belts must be worn and ropes of sufficient strength be securely fasten to the outdoor unit to prevent falling that could cause personal injury or death as well as property loss Requirements of the mounting structure The...

Страница 16: ... a common tapping screw Others The connection method of the air conditioner and the power cord and the interconnection method of each independent element shall be subject to the wiring diagram affixed to the machine The model and rating value of the fuse shall be subject to the silkscreen on corresponding controller or fuse sleeve 6 2 Installation of Indoor Unit Installation Parts checking Packing...

Страница 17: ...ng damaged running through the wall and from the rodents that may inhabit in the hollow wall a pipe protecting ring shall be installed and sealed with putty Note Usually the wall hole is Φ60mm Φ80mm Avoid pre buried power wire and hard wall when making the hole Route of Pipeline 1 Depending on the position of the unit the piping may be routed sideway from the left or the right Fig 1 or vertically ...

Страница 18: ...lating material to pack and seal insulation pipe to prevent generation of condensate water on the joint part 2 Connect the water outlet with drain pipes and make the connection pipe cables and the drain hose straight 3 Use plastic cable ties to wrap the connecting pipes cables and drain hose Run the pipe sloping downward Fixing the indoor unit 1 Hang the indoor unit on the peg board and move the u...

Страница 19: ...s NOTE This manual usually includes the wiring mode for the different kind of A C We cannot exclude the possibility that some special type of wiring diagrams are not included The diagram are for reference only If the entity is difference with this wiring diagram please refer to the detailed wiring diagram adhered on the unit which you purchased 6 3 Installation of outdoor Unit Packing list of the ...

Страница 20: ...5M CC 12000Btu 20g m CC 18000Btu 30g m Note This table is for reference only Wiring Connection 1 Loosen the screws and remove E parts cover from the unit 2 Connect the cables respectively to the corresponding terminals of the terminal board of the outdoor unit see the wiring diagram and if there are signals connected to the plug just conduct butt joint 3 Ground wire Remove the grounding screw out ...

Страница 21: ...diagrams are not included The diagram are for reference only If the entity is difference with this wiring diagram please refer to the detailed wiring diagram adhered on the unit which you purchased Expelling the air Outdoor unit refrigerant discharging method After the pipe side connection is complete proceed as follows Vacuum Pumping Method R410A refrigerant evacuation must use the ...

Страница 22: ...lve charge hose manifold valve and vacuum pump 3 Fully open the handle Lo of the manifold valve and apply vacuum for at least 15 minutes and check that the compound vacuum gauge reads 0 1MPa 76cmHg 4 After applying vacuum fully open the stop valve with a hex wrench 5 Check that both indoor and outdoor connections are free of air leakage Outdoor condensation drainage Heat pump type only 6 4 Check a...

Страница 23: ...king for leak by pointing the probe of the leak detector according to the instruction to the suspect points of leak 2 Test operation Test preparation Verify that all piping and connection cables are well connected Confirm that the values at the gas side the liquid side are fully open Connect the power cord to an independent power socket Install batteries in remote control Test Operation method Tur...

Страница 24: ...nvolve E1 E2 E3 and E4 No Error Name Reference Code 1 Overcurrent Protection of Indoor Unit E0 2 Internal temperature sensor error E1 3 External coil sensor error E2 4 Internal coil sensor error E3 5 Internal fan error of wall mounted air conditioner PG motor E4 6 Internal fan error of wall mounted air conditioner DC motor E4 7 Internal and external communication error E5 5E 8 Indoor EE Failure Eb...

Страница 25: ...need to be replaced Inspection procedure and key points All the troubleshooting procedures for the reference of maintenance staff are prepared from simple to complex from surface to internal and from test to replacement Although these key points do not cover all the error and difficult or special problems are not included as well but they can cover most of the common error Special attention Here a...

Страница 26: ...del observe whether the live line passes through the current transformer if not lay the line accordingly and reboot for inspection 2 The current clamp is used to measure the working current and determine whether it is within the normal working current range of the nameplate If normal working current is detected it may be the fault of the current transformer and replace the main control panel of th...

Страница 27: ...s affected with damp 5 In case no standard sensor is available at present replace the internal temperature sensor by other sensor asides and then check whether the error still exists if the error disappears replace the sensor if the error still exists check the main internal control panel and change if necessary Special attention Most internal temperature sensors of the frequency conversion machin...

Страница 28: ...ected with damp in case the lead of coil sensor is above the copper pipe 5 In case no standard sensor is available at present replace the temperature sensor of external coil by other sensor asides and then check whether the error still exists if the error disappears replace the sensor if the error still exists check the main internal control panel and change if necessary Special attention Most int...

Страница 29: ...e lead of coil sensor is above the copper pipe 5 In case no standard sensor is available at present replace the temperature sensor of internal coil by other sensor asides and then check whether the error still exists if the error disappears replace the sensor if the error still exists check the main internal control panel and change if necessary Special attention Most internal temperature sensors ...

Страница 30: ...ade of internal machine by hand to see if there s any resistance Some occasional internal fan error may relate to bearing coordination 3 Reconnect the drive wire and speed feedback wire thus to exclude any fan error due to connector loosening 4 Check whether the plug in terminal of speed feedback on the control panel is loose and pull the terminal slightly for inspection if necessary 5 Replace the...

Страница 31: ...loosening and pull the terminal slightly for inspection if necessary 3 Replace the motor in the faulted air conditioner with other DC motor to plug in the main internal control panel do not fix it with the fan for the time being if the main control panel still indicates DC motor error then replace the main internal control panel if the error disappears replace the DC motor 4 Multimeter can be used...

Страница 32: ...ternal unit connects with that of the external unit Connecting wires touched well Main internal control panel replacement Main external control panel replacement 2 Cannot power on and work Can AC 220V be delivered to the terminal block of the external unit Can the bridge rectifier and module panel generate DC 310V Can the main external control panel generate a low voltage power supply of DC 5V Doe...

Страница 33: ...e is still something wrong replace the whole set of external control unit for the control unit composed of several function boards try disconnecting the weak current data wires among several control boards and then power the external unit on if the main control panel can be powered on and initialized successfully then it s the module panel problems if the main external control panel still cannot b...

Страница 34: ...a stored in EE and if not read the failure code Outdoor EE Failure will be indicated and raised in the indoor unit Reasons for data not being read are as follows 1 wrong EE chip data format 2 EE chip is broken 3 bad contact of EE or fault of EE reading circuit 4 backward installation of EE chip Inspection path internal main control panel Tools required for inspection Frequent problematic part Bad ...

Страница 35: ...inal of the fan is not connected firmly or the order of lead wires is correct If the external fan of the newly installed air conditioner rotates reversely first observe if the color order of the three lead wires is correct or change the order of any two of the three lead wires of the motor to see if the fan can rotate in the forward direction 3 The DC motor of this scheme is relatively simple and ...

Страница 36: ...request to the module panel The error triggered by the shutdown request is called module protection error Inspection path Supply voltage Compressor wire reactor wire System blocked Module panel damaged Main external control panel destroyed Compressor destroyed Tools required for inspection Multimeter pressure gauge megameter module panel in normal condition Frequent problematic part Supply voltage...

Страница 37: ...n of the three compressor wires against the earth wire is good normally at MΩ level and check if the reactor wire is well connected or the reactor is destroyed 5 Test if the 15V and 5V 3 3V power supply on the module panel is stable and exclude the module panel error caused by power supply of the main external control panel 6 Methods for judging whether the power module is damaged use the diode po...

Страница 38: ...ns not performed Do not remove the reactor and replace with short circuit by no means 3 If PFC protection error will be indicated immediately after starting up it is almost certain that it s substantial error having nothing to do with supply voltage it is suggested to observe if there is any component destroyed by strike arc near the module panel 4 Test if the 15V and 5V 3 3V power supply on the P...

Страница 39: ...nternal and external heat exchanger dirty which lead to poor heat transfer and high system pressure 4 If compressor out of step error will be indicated immediately after starting up it is almost certain that it s substantial error having nothing to do with supply voltage and system pressure it is suggested to observe if there is any component destroyed by strike arc near the module panel use the m...

Страница 40: ...ressor works for a while the corresponding exhaust temperature should be 100 38 2 Check if the sensor wire or the sensor connecting wire is damaged 3 Check if the connecting terminal is connected firmly the weld between the terminal and the main control panel is loose pull the terminal slightly for inspection if necessary 4 Check whether the sensor is affected with damp The coil sensor is quite ea...

Страница 41: ...em is deficient in liquid and the compressor idles the system is blocked and the pressure of the compressor is too high 2 After excluding the possibility of the system problem please note that the temperature protection switch is closed normally Test if the terminals of the sensor are in the short circuit condition with the multimeter In the case of open circuit then there is something wrong with ...

Страница 42: ... the terminal connectors are well fixed check whether the weld between the terminal and the main control panel is loose and pull the terminal slightly for inspection if necessary 4 Check whether the sensor is affected with damp 5 In case no standard sensor is available at present replace the external temperature sensor with the other sensor asides and then check whether the error still exists if t...

Страница 43: ...pply line capacity is insufficient and the user is usually suggested to replace the circuit or install a specizlied air conditioner supply voltage stabilizer 2 For the external machines with PFC panels without separate rectifier bridges the operator shall ensure if the PFC function is on with the direct current voltage grade of the multimeter When the compressor is running voltage between P and N ...

Страница 44: ...m the main external control panel is normal and especially note that if the 5V 3 3V power is led to the module panel Eleminate the possibility that it s not running normally because there is no 5V 3 3V power at the module panel 3 The maintenance personnel shall replace the module panel of the faulted air conditioner with a regular module panel taken with him and if the communication error disappea...

Страница 45: ...ere is a back flow which can be estimated by measuring the high and low pressures with the pressure meter for the consideration of electricity control we can use a multimeter During heating check if the four way valve terminal can switch a circuit of 220V if yes and the four way valve still is faulted in the position changing the four way valve is faulted and if there is no circuit over 220V in he...

Страница 46: ...to check 2 Use a multimeter to measure whether it is disconnected 3 Use the multimeter to check the state of the high voltage swtich and check whether it is in the OFF state normally OFF unusual disconnection 4 If the pressure is normal and the high voltage switch is kept open it is positive that the pressure voltage is faulted 5 If the pressure switch is normal and the connection line is tact and...

Страница 47: ... for inspection Hex nut multimeter pressure gauge Frequent problematic part Stop valve evaporator condenser and connection pipe Inspection procedure and key points 1 Check the stop valve and turn it counterclockwise with hexagons to see if the valve is not open and the opening is not enough 2 Check whether the evaporator condenser and connection pipe are damaged or cracked and focus on checking wh...

Страница 48: ...ion procedure and key points 1 Check the coil sensor with a multimeter to see if the resistance value is normal 20KΩ standard sensor 25 2 Use a pressure gauge to detect system pressure If the system pressure is high it may cause internal dirty blockage or poor external heat transfer which may lead to high coil temperature 3 Observe whether the speed of AC fan is too low which leads to poor heat tr...

Страница 49: ...e and key points 1 Check if the system pressure is low if is usually it the shortage of liquid that leads to excessive exhasut temperature protection 2 Check whether the indoor outdoor air inlet is blocked such as whether the evaporator or condenser is dirty or whether the filter is dirty or blocked and if inlet is affected reove the shield 3 Check whether the air volume at the tuyere is too small...

Страница 50: ...k whether the indoor air inlet is blocked or not if it affects the wind remove the shield 2 Check whether the filter is dirty or not If dirty blockage is found in the filter clean the filter 3 Check if the air volume at teh tuyere is too small and if the indoor unit fan is blocked if is clean the fan 4 Measure the drift of the inner disk sensor with a multimeter at ambient temperature Inspection p...

Страница 51: ...nsor Inspection procedure and key points 1 Check whether the indoor air inlet is blocked or not if it affects the wind remove the shield 2 Check whether the filter is dirty or not If dirty blockage is found in the filter clean the filter 3 Check if the air volume at teh tuyere is too small and if the indoor unit fan is blocked if is clean the fan 4 Measure the drift of the inner disk sensor with a...

Страница 52: ...e a mutlimeter to detect and check if the bus voltage is too low causing the overcurrent protection 2 Use a pressure gauge to check whether the pressure of the system exceeds the standard If the pressure exceeds the standard it may lead to dirty blockage of the system 3 Replace the outdoor unit controller and if the unit returns to normal it is the problem of the controller Special attention Gener...

Страница 53: ...ted if the fan revolving speed is low and if the resistance value of the coil sensor is drifted or the temperature is inaccurately measured or it is damaged 2 Over current protection it is more possible to appear under high temperature cooling status and the over current of compressor is usually reflected by over high load of the compressor It is normal if such protection appears under a very high...

Страница 54: ...ng in the after sales service the actual troubleshooting methods are consistent with F1 No Failure Code Failure Name Primary Troubleshooting Parts 1 L0 DC Over Under voltage Failure Outdoor unit controller power grid 2 L1 Overcurrent Protection on Phase Current of Compressor Outdoor unit controller power grid compressor compressor wire 3 L2 Out of Step Failure of Compressor Outdoor unit controller...

Страница 55: ...or cable module panel main external control panel compressor 7 Exhaust air sensor error System pressure exhaust air sensor main external control panel 8 External coil sensor error External coil sensor main external control panel 9 External room temperature sensor error External room temperature sensor main external control panel 10 Indoor and outdoor unit communication error Connection wire main i...

Страница 56: ...xternal control panel 21 Over current protection Power voltage system pressure module panel main external control panel 22 Exhaust sensor error System pressure exhaust sensor main external control panel 23 Cooling overload protection Condenser external fan capillary external coil sensor main external control panel 24 Indoor high temperature heating protection Evaporator internal fan thin unit conn...

Страница 57: ...e to working condition as long as you press the ON OFF button of the remote control and the Signal is well received 2 The compressor stops running but the indoor fan motor keeps working when it is at cooling mode with the indoor temperature higher than set temperature If you turn off the air conditioner and restart it immediately it will return to normal in 3 minutes after that the air conditioner...

Страница 58: ... Symptom No Power Display 1 Items a Check if the input voltage is correct b Check if the AC power supply connecting is correct c Check if the output voltage of the manostat L7805 IC2 is correct 2 Trouble shooting procedure ...

Страница 59: ...connected correctly to the connector CN8 b Check if the AC input voltage is correct c Check if the IC of indoor fan motor is connected correctly to the connector CN2 d Check if the capacity of indoor fan motor is connected correctly to the connector CN8 2 Trouble shooting procedure ...

Страница 60: ...58 The Outdoor Unit Does Not Work 1 Items a Check if the input voltage is correct b Check if the wire connection of the outdoor connecting terminal is correct 2 Trouble shooting procedure ...

Страница 61: ...r Does Not Work 1 Items a Check if the input voltage is correct b Check if the step motor controlling the up down movement firmly connected to Cn2 2 Trouble shooting procedure Heating Mode Can Work But No Hot Air Blow ...

Страница 62: ...60 1 Check if the set temperature is lower than the indoor temperature 2 Check if the indoor PCB is connected to the terminal correctly ...

Страница 63: ...61 Remote Control Can Not Work Trouble shooting procedure ...

Страница 64: ...2021 Johnson Controls Inc www johnsoncontrols com Johnson Controls reserve the right to change product features without prior notice Form MHKFEEBXFORX 20210419 ...

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