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Summary of Contents for GH12E

Page 1: ...RESIDENTIAL AIR CONDITIONERS Service Manual Vidicon Ltd Commercial Air Conditioners R410A Systems MODELS WGH12E GH12E Refrigerant R410A ...

Page 2: ...DUW LULQJ LDJUDP 3 3ULQWHG LDJUDP XQFWLRQ DQG RQWURO 5HPRWH RQWUROOHU QWURGXFWLRQ ULHI HVFULSWLRQ RI 0RGHV DQG XQFWLRQV 3DUW ė QVWDOODWLRQ DQG 0DLQWHQDQFH 1RWHV IRU QVWDOODWLRQ DQG 0DLQWHQDQFH QVWDOODWLRQ QVWDOODWLRQ LPHQVLRQ LDJUDP QVWDOODWLRQ 3DUWV FKHFNLQJ 6HOHFWLRQ RI QVWDOODWLRQ RFDWLRQ OHFWULF RQQHFWLRQ 5HTXLUHPHQW QVWDOODWLRQ RI QGRRU 8QLW QVWDOODWLRQ RI 2XWGRRU 8QLW 9DFXXP 3XPSLQJ DQG HDN ...

Page 3: ...VW QGRRU 8QLW 2XWGRRU 8QLW 5HPRYDO 3URFHGXUH 5HPRYDO 3URFHGXUH RI QGRRU 8QLW 5HPRYDO 3URFHGXUH RI 2XWGRRU 8QLW SSHQGL SSHQGL 5HIHUHQFH 6KHHW RI HOVLXV DQG DKUHQKHLW SSHQGL RQ JXUDWLRQ RI RQQHFWLRQ 3LSH SSHQGL 3LSH SDQGLQJ 0HWKRG SSHQGL LVW RI 5HVLVWDQFH IRU 7HPSHUDWXUH 6HQVRU ...

Page 4: ...WGH E GH E Model 12 6HUYLFH 0DQXDO 7HFKQLFDO QIRUPDWLRQ 6XPPDU QGRRU 8QLW 3DUW Ė 7HFKQLFDO QIRUPDWLRQ 2XWGRRU 8QLW GH12E WGH12E 5HPRWH RQWUROOHU FAN MODE ON OFF ...

Page 5: ...LW QGRRU 8QLW 0RGHO QGRRU 8QLW 3URGXFW RGH DQ 7 SH DQ LDPHWHU HQJWK PP 2XWGRRU WHG12E 1 URVV ÀRZ ĭ WGH12E GH12E LC 2XWGRRU WGH12E 1 URVV ÀRZ ĭ RROLQJ 6SHHG 6 0 0 0 6 U PLQ HDWLQJ 6SHHG 6 0 0 0 6 U PLQ DQ 0RWRU 3RZHU 2XWSXW ȝ PP PP PP OXPLQXP LQ FRSSHU 7XEH ĭ 03 03 03 OXPLQXP LQ FRSSHU 7XEH ĭ 03 03 03 G G PP PP PP NJ DQ 0RWRU 5 DQ 0RWRU DSDFLWRU YDSRUDWRU RUP YDSRUDWRU 3LSH LDPHWHU YDSRUDWRU 5RZ Q ...

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Page 7: ...6 8 10 15 0 20 30 40 50 50 60 70 80 90 15 0 20 30 40 60 70 80 90 Compressor speed rps Current A 12K Heating 0 2 4 6 8 10 Compressor speed rps Current A 12K Condition Indoor DB27 C WB19 C Indoor air flow Super High Pipe length 5m Condition Indoor DB20 C WB15 C Indoor air flow Super High Pipe length 5m ...

Page 8: ...10 0 20 33 35 37 39 41 43 45 40 60 80 100 120 140 160 180 200 Outdoor temp C Capacity ratio 12K Condition Indoor DB27 C WB19 C Indoor air flow Super High Pipe length 5m 12K Cooling Heating 20 18 14 10 6 2 2 6 0 20 40 60 80 100 120 140 160 180 200 Capacity ratio 10 Condition Indoor DB27 C WB19 C Indoor air flow Super High Pipe length 5m Condition Indoor DB20 C WB15 C Indoor air flow Super High Pipe...

Page 9: ...Q 6HUYLFH 0DQXDO 1RLVH XUYH SL L ML M MH H SH 30 35 40 45 50 55 Compressor speed rps Noise dB A 12K 0 8 20 30 40 50 60 70 80 90 10 15 20 25 30 35 40 45 50 Indoor fan motor rotating speed rps Noise dB A 12K QGRRU VLGH QRLVH 2XWGRRU VLGH QRLVH ...

Page 10: ...03D 7 7 12K LC a 0 WR 2 2 WR 5 6XSHU LJK LJK 12K LCLH WR WR 5DWHG KHDWLQJ FRQGLWLRQ 0RGHO 3UHVVXUH RI JDV SLSH FRQQHFWLQJ LQGRRU DQG RXWGRRU XQLW QOHW DQG RXWOHW SLSH WHPSHUDWXUH RI KHDW H FKDQJHU DQ VSHHG RI LQGRRU XQLW DQ VSHHG RI RXWGRRU XQLW RPSUHVVRU UHYROXWLRQ USV QGRRU 2XWGRRU 3 03D 7 7 a 42 WR 44 WR 6XSHU LJK LJK 55 WR WR QVWUXFWLRQ 7 QOHW DQG RXWOHW SLSH WHPSHUDWXUH RI HYDSRUDWRU 7 QOHW D...

Page 11: ...WGH E GH E Model 12 7HFKQLFDO QIRUPDWLRQ 6HUYLFH 0DQXDO 2XWOLQH LPHQVLRQ LDJUDP QGRRU 8QLW 8QLW PP 541 866 292 209 162 160 10 80 35 163 Φ55 Φ55 ...

Page 12: ...WGH E GH E Model 12 6HUYLFH 0DQXDO 7HFKQLFDO QIRUPDWLRQ 2XWGRRU 8QLW 8QLW PP GH12E ...

Page 13: ...LRQ SLSH VSHFL FDWLRQ LTXLG PP DV PP Indoor unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condenser Valve Valve Liquid pipe side Gas pipe side Strainer Electron expansion valve Strainer Accumlator Compressor Capillary WGH12E GH12E ...

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Page 18: ...de I feel Healthy mode Scavenging functions Quiet Operation mode Temp display type QWURGXFWLRQ IRU XWWRQV RQ 5HPRWH RQWUROOHU 1RWH Ɣ IWHU SXWWLQJ WKURXJK WKH SRZHU WKH DLU FRQGLWLRQHU ZLOO JLYH RXW D VRXQG 2SHUDWLRQ LQGLFWRU LV 21 UHG LQGLFDWRU IWHU WKDW RX FDQ RSHUDWH WKH DLU FRQGLWLRQHU E XVLQJ UHPRWH FRQWUROOHU Ɣ 8QGHU RQ VWDWXV SUHVVLQJ WKH EXWWRQ RQ WKH UHPRWH FRQWUROOHU WKH VLJQDO LFRQ RQ WK...

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Page 23: ...ing mode 2 2 Dry Mode 2 2 1 Dry Conditions and Process 2 3 Heating mode not available for cooling only type 2 3 1 Heating conditions and process When Tamb Tpreset 2ć the unit starts heating operation In this case compressor and outdoor fan operate simultaneously the indoor fan operates at cold air prevention mode When Tamb Tpreset 5ć the compressor and outdoor fan stop operation the indoor fan blo...

Page 24: ...the unit will operate at cooling mode the default set temperature is 25ć 2 5 2 When Tamb 21ćˈ the unit will operate at heating mode the default set temperature is 20ć if the cooling only unit operates at fan mode the default set temperature is 25ć 2 5 3 When 22 ć Tamb 25ćˈand the unit is turned on for the first time if it changes to auto mode from other mode the previous operation mode will be mai...

Page 25: ...en Tamb Tpreset 1ćˈ indoor fan will operate at low speed Note The switchover among superhigh speed high speed medium speed and low speed requires minimum 210seconds of operation 2 7 4 In this mode set temperature will be automatically adjusted according to actual operation conditions 3 Other Control 3 1 Timer function General timer and clock timer functions are compatible by equipping remote contr...

Page 26: ...evious status while cold plasma and static dedusting will be forced to be turned on and other loads will be turned off Then the complete unit will be turned off When X FAN function is set to be off once pressing ON OFF button the complete unit will be turned on immediately 3 6 2 During X FAN operation press X FAN button the indoor fan horizontal louver cold plasma and static dedusting will be turn...

Page 27: ...clockwise to position O to close air outlet If swing function has not been set after startup of the unit horizontal louver will turn clockwise to position D in HEAT mode or turn clockwise to level position L in other modes If swing function is set when starting up the unit the horizontal louver will swing between L and D There are 7 swing status of horizontal louver Positions L A B C and D swing b...

Page 28: ...ill operate according to the temperature sensed by the air conditioner If I FEEL function is not selected the ambient temperature will be that sensed by the air conditioner Ambient temperature of I FEEL displayed by controller is 1 59 ć ć 3 13 Health and Cold Plasma Function When the unit is operating turn health or cold plasma to be ON OFF by health button in remote control if there is no such bu...

Page 29: ... reaching the temperature point in heating 6 2 Under this mode the temperature setting range is 16 30ć 7 Defrosting control heating mode 7 1 If it turns to defrosting time and it detected that the defrosting temperature is satisfied for 3mins successively the unit turns into defrosting process 7 2 Defrosting starting compressor stops operation and restart it up after 55s delayed 7 3 Defrosting end...

Page 30: ...If 13A IAC current operation frequency of compressor may decrease or increase 14 2 If 17A IAC current the system will stop operation because of overcurrent the complete unit can resume operation only after the compressor stops for 3min 14 3 If the unit is stopped because of overcurrent for 6 times successively it can t resume operation automatically which can only be resumed by pressing ON OFF but...

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Page 34: ...g the indoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Finish installation Note this flow is only for reference please find the more detailed installation steps in this section Select outdoor unit installation location Install the support of outdoor unit select...

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Page 47: ...oller loosened or poorly contacted Insert the temperature sensor tightly Yes Is malfunction eliminated Is there short circuit due to trip over of the parts Make the parts upright Is malfunction eliminated Replace the mainboard with the same model End No No Is the temperature sensor normal according to the Resistance Table No Replace it with a temperature sensor with the same model no Yes Yes Is ma...

Page 48: ...nction is eliminated Reinsert the wiring terminal of indoor fan It s the malfunction of main board Replace a new main board that is of the same model It s the malfunction of main board Replace a new main board that is of the same model Replace a new main board that is of the same model It s the malfunction of main board Then check whether the voltage between terminal 2 and terminal 3 of the motor ...

Page 49: ...d Is the jumper cap inserted correctly and tightly Replace the jumper cap with the same model End Yes Yes Assemble the jumper cap with the same model No Is malfunction eliminated No Yes Insert the jumper cap tightly Is malfunction eliminated No No Yes Is malfunction eliminated No Yes Replace the mainboard with the same model 0DOIXQFWLRQ RI 3URWHFWLRQ RI XPSHU DS ...

Page 50: ...No No No End Yes Yes Yes Yes Yes Yes Malfunction is eliminated Malfunction is eliminated Malfunction is eliminated Malfunction is eliminated Replace outdoor mainboard Replace indoor mainboard Communication wire connection is broken Replace the wire Is there incorrect match between the mainboard and the display panel or between the indoor and outdoor mainboards Match them according to the requireme...

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Page 53: ...t with the voltage testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminalL andN on wiring board XT power supply Voltage within 210VAC 250VAC Shut down the power and repair the power supply to restore the range 210VAC 250VAC power on and restart the unit If the fault is eliminated Shut down the power and wait 20 mi nutes or use DC voltmeter to mea...

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Page 55: ... measure the voltage between the two ends of capacitor C2 until the voltage is lower than 20V Replace the capacitor C2 Then energize and start the unit Replace the control panel AP1 Take corrective actions according to Technical Service Manual and then energize and start the unit If there is any abnormality described above Replace the control panel AP1 If the connection between AP1 and COMP is uns...

Page 56: ... SURFHVV 1 Check if fan terminal OFAN is connected well 2 Test if resistance value of any two terminals is less than 1k with ohmic meter If the indoor and outdoor fan work well After the unit de energized for 20min Replace control board AP1 If the radiating of outdoor and indoor unit is well Improve the radiating environment of unit Replace outdoor fan Y Replace fan capacitor C1 Anti high temperat...

Page 57: ...essor wire COMP UVW is well connected and connection sequence is correct Replace control board AP1 Replace the compressor If malfunction is removed If the stop time of compressor is more than 3min N If the stop time is not enough and the high and low pressure of system is not balance please start it after 3min Improve the connection situation of control board AP1 and compressor COMP connect it wit...

Page 58: ...tdoor fan works normally If the stop time of compressor is more than 3min Synchronism after energize the unit and start it Connect wire well Synchronism occurred during operation Replace control board AP1 If the radiating of unit is well Remove malfunction Improve the radiating of unit clean heat exchanger and increase ventilation Replace fan capacitor C1 Replace outdoor fan Y N N N Y Y N Replace ...

Page 59: ...ith wiring diagram Replace EKV coil of electron expansion valve If the wiring terminal FA of electron expansion is well connected Remove malfunction The resistance value of first 4 l ead foot an d th e fifth lead foot is similar less than 100 After the unit de energized for 20min Remove malfunction Y N N N If the overload protector SAT is well connected N Under ambient temperature test the resista...

Page 60: ...terminals Capacity is short circuit and replace it Y Re energize the unit and start it Cut the terminal of reactor test the resistance between two terminals of reactor with ohmic meter Replace the reactor Re energize the unit and start it Check the connection wire of reactor L of outdoor unit and PFC capacity If there is damaged short circuit Replace connection wire with circuit diagram Replace co...

Page 61: ...RFHVV Start Check communication circuit of outdoor unit Problem of communication circuit Check built in wiring of indoor and outdoor unit Connection correct Malfunction of circuit is detected with control board AP1 voltage Check connection wire of indoor and outdoor unit with circuit diagram Check connection wire of indoor and outdoor unit with circuit diagram If the unit is operation normal befor...

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Page 70: ...OO SRZHU VXSSOLHV DQG GLVFKDUJH WKH UHIULJHUDQW FRPSOHWHO EHIRUH UHPRYDO 1 Before disassembling the unit Before disassembling the unit 2 Remove filter Open the panel Loosen the clasps on filter push the filter inward and then pull it upward then the filter can be removed a b 3 Remove guide louver Remove the axial bushing of big guidelouver a axial bushing Steps Procedure WGH12E ...

Page 71: ...end thebig guide louver to remove it b c Remove the axial bushing of small guidelouver Remove the rotating shaft of small guide louver from the groove slightly bend the small guide louver to remove it d big guide louver axial bushing small guide louver 4 Remove panel a Loosen the clamps of the panel to remove the panel Steps Procedure ...

Page 72: ...o remove the display 5 Remove front case a Remove the screws fixing electric box cover 2 to remove the electric box cover 2 electric box cover 2 screw b Remove the screws fixing front panel loosen the clamps to remove the front panel screw clamp front panel Steps Procedure ...

Page 73: ...ng connecting rod to remove the swing connecting rod b remove the swing fan blade a Remove the indoor tube temp sensor b Remove the screws fixing earth wire to remove the earthwire swing fan blade clamp clamp swing connecting rod 7 Remove electric box sub assy heat exchanger thermistor screw earth wire Steps Procedure ...

Page 74: ...ove every wiring terminals and remove the electric box cover sub assy a Remove the screws fixing connection pipe clamp to remove the connection pipeclamp 7 Remove evaporator sub assy electric box cover sub assy screw electric box cover screw auxiliary piping pipe clamp screw Steps Procedure ...

Page 75: ... screws fixing evaporator sub assy slightly regulate the tube to remove the evaporator sub assy a motor to remove the motor b to remove the motor 8 Remove cross fan blade and motor auxiliary piping evaporator sub assy up down swing motor left right swing motor Steps Procedure ...

Page 76: ...e the screws fixing motor clamp to remove the motor clamp d Remove the cross fan blade and motor e Remove the shafting bearing cushionrubber base f bladeandmotor and then remove the motor screw motor clamp bearing cushion rubber base cross fan blade motor Steps Procedure ...

Page 77: ...H RI 2XWGRRU 8QLW 1 Before disassembly Remove the screws connecting top cover left and right side plate as well as panel to remove the top cover 2 Remove top cover top cover Remove the screws connecting handle and right side plate to remove the handle 3 Remove handle handle GH12E ...

Page 78: ...e the screws fixing panel to remove the panel Remove the screws connecting panel grille and panel loosen the clamp to remove the panel grille 4 Remove panel and grille panel grille Remove the screw fixing valve cover to remove the cover 5 Remove valve cover valve cover ...

Page 79: ...he left side plate 6 Remove left side plate left side plate Remove the screw nut fixing cross fan blade remove the gasket and spring cushion to remove the cross fan blade 7 Remove cross fan blade cross fan blade Remove the screws fixing right side plate and valve support to remove the right side plate 8 Remove right side plate right side plate ...

Page 80: ...electric box assy electric box assy cover electric box Remove the screws fixing electric reactor to remove the electric reactor 10 Remove electric reactor electric reactor Remove the four tapping screws fixing motor pull out 11 Remove motor and motor support the contact tag of motor wiring to remove the motor Remove the two tapping screws fixing motor support and chassis lift to remove the motor s...

Page 81: ... board mid isolation board Welding cut the spot weld of four way valve assy compressor air suction discharging valve and condenser pipe outlet lift to remove the four way valve assy Note release the refrigerant before welding cutting 13 Remove four way valve assy four way valve assy Remove the three feet screw nuts fixing compressor to remove the compressor 14 Remove compressor compressor ...

Page 82: ...ODWLRQ DQG 0DLQWHQDQFH Remove screws connecting condenser assy and chassis to remove the condenser assy Remove the screws fixing big and small valve to remove the valves 15 Remove big and small valve assy condenser assy small valve big valve ...

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Page 88: ...Vidicon Ltd Commercial Air Conditioners R410A Systems ...

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