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Heat Controller

DVC/DVH Inverter Mini-Split

9.2.2 Outdoor Fan Operation - Cooling Mode

The outdoor fan operates based on the Outdoor
Ambient Temperature (T4):

High

Low

When the outdoor ambient temperature T4 is

above 78°F(22°C), the outdoor fan runs high

speed, however when the temperature is below
this, the fan speed decreases to low and
continues to run at low speed when the

temperature is 68°F(20°C) or below.

9.4.2.3 Indoor Fan Operation-Cooling Mode

In cooling mode, indoor fan runs all the time
and the speed can be set to high, medium, low
or auto. When the fan is placed in auto mode,
while the unit is in cooling mode, the auto fan
operation takes into account the difference

(ΔT)

in indoor room temperature (T1) and the set
point temperature (Ts):

High

Low

Medium

1.5

When there is a 3 to 4 degree difference

(ΔT)

set and room temperatures, the fan runs high
speed. When the difference in temperature

(ΔT)

is between 1 and 3 degrees, the fan speed

is medium. However, as the room temperature
begins to get closer to the set temp, within 1
degree or less temperature differential

(ΔT)

, the

fan speed will run on low.

9.3 HEATING MODE

9.3.1 Compressor Operation-Heating Mode

The maximum operating frequency (Fmax),
follows the chart below based on the outdoor
ambient temperature T4:

Fmax=F3

Fmax=F5

Fmax=F7

Fmax=F9

Fmax=F10

Fmax=F8

Fmax=F6

Fmax=F2

Off

Fmax=F4

ΔT =T1-Ts

ΔT°

°F (°C)

72 (22)

68 (20)

°F (°C)

93 (34)
92 (33)

83 (28)
81 (27)

71 (25)
75 (24)
72 (22)
70 (21)

66 (19)
65 (18)

63 (17)
61 (16)

59 (15)
57 (14)

54 (12)
52 (11)

43 (6)
41 (5)

Содержание A-DVC09SD-0

Страница 1: ...SERVICE MANUAL DVC DVH 09 12 18 24 Inverter Single Zone Ductless Mini Split AITONS MARS 35 Brownridge Road Unit 6 Halton Hills ON L7G 0C6 1 888 744 2911 info aitons com www aitons com ...

Страница 2: ...oil Temp Protection 24 9 6 Auto Mode 24 25 9 7 Dry Mode 25 9 8 Forced Operation 25 9 9 Timer Function 25 26 9 10 Sleep Mode 26 9 11 Auto Restart Function 26 9 12 Automatic Panel Function 26 9 13 47 F 8 C Heating 26 10 Troubleshooting 27 10 1 Indoor Unit Error Codes 27 10 2 Outdoor Unit Errors and Troubleshooting 28 31 10 3 Diagnosis and Solution 32 48 10 4 Pressure on Service Port 49 WARNING Insta...

Страница 3: ...l of the case edges and the fins on the condenser and evaporator Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not touch operation the product with wet hands Do not allow water to run into electrical parts or the unit It may cause fire failure of the product or electric shock Do not store or use flammable gas or ...

Страница 4: ...ts of the product Do not touch the metal parts of the product when removing the air filter They are very sharp Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage Do not insert hands or other objects through air inlet or outlet while the product is op...

Страница 5: ...nits Capacity Indoor Units Outdoor Units 9KBTU H B DVH09SD 0 B DVC09SD 0 A DVH09SD 0 A DVC09SD 0 12KBTU H B DVH12SD 0 B DVC12SD 0 A DVH12SD 0 A DVC12SD 0 18KBTU H B DVH18SD 1 B DVC18SD 1 A DVH18SD 1 A DVC18SD 1 24KBTU H B DVH24SD 1 B DVC24SD 1 A DVH24SD 1 A DVC24SD 1 2 2 Required Clearances for Indoor and Outdoor units ...

Страница 6: ...n Refrigerant Leakage Detect Self diag Function Hydrophilic Aluminum Fin Anti rust Cabinet Valve Protection Cover PTC Heating Belt O Horizontal Vertical Swing Function O Filter Follow Me O Silent mode O Auto Restart Turbo Mode Sleep Mode Anti Cold Blow Low Ambient Silver Ico Filter Golden Fin Follow Me Self Clean Low Heating Room Temp Horizontal Vertical Swing Function Refrigerant Leakage Detect L...

Страница 7: ...o automatically change the operation mode to supply a comfortable temperature Using this feature allows the unit to sense the conditions where you are in the room rather than up high in the room where it traditionally senses the conditions via the indoor unit Low Room Temperature Protection Allows the unit to maintain a set temperature to protect the area it is installed in from freezing when you ...

Страница 8: ...change W D H Note The above drawing is only for reference The dimensions of your actual unit may be different and are subject to change Model W D H B DVC09SD 0 26 8in 680mm 7 0in 178mm 10 0in 255mm B DVH09SD 0 B DVC12SD 0 30 3in 770mm 7 4in 188mm B DVH12SD 0 B DVC18SD 1 35 6in 905mm 7 8in 198mm 10 8in 275mm B DVH18SD 1 B DVC24SD 1 40 6in 1030mm 8 6in 218mm 12 4in 315mm B DVH24SD 1 ...

Страница 9: ...for reference Actual dimensions may be different and are subject to change L R H Model R L H Hole Diameter B DVC DVH09 3 6in 92mm 6 7in 170mm 1 8in 45mm Φ2 56in 65mm B DVC DVH12 3 7in 95mm B DVC DVH18 3 1in 80mm 3 9in 100mm Model R L H Hole Diameter B DVC DVH24 6 4in 163mm 11 5in 293mm 1 8in 45mm Φ2 56in 65mm H L R ...

Страница 10: ...is only for reference The dimensions of your actual unit may be different and are subject to change Model W H D W1 A B A DVC DVH09 A DVC DVH12 26 0in 660mm 10 5in 265mm 21 25in 540mm 28 8in 732mm 18in 458mm 10 9in 276mm A DVC DVH18 30in 760mm 11 25in 285mm 23 2in 590mm 32 5in 823mm 20 9in 530mm 11 5in 290mm A DVC DVH24 33 3in 845mm 12 5in 320mm 27 6in 700mm 35 7in 908mm 22in 560mm 13 2in 335mm ...

Страница 11: ... HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR CAPILIARY TUBE ATTENTION Units can be pumped down for service and recharged A servicer can pump down the refrigerant into the outdoor unit for maintenance or replacement of the indoor unit Also the entire system can be evacuated for maintenance or replacement of the outdoor unit ...

Страница 12: ...WAY VALVE CHECK VALVE Heating Model only CAPILIARY TUBE REVERSING VALVE Heating Model only COOLING HEATING ACCUMULATOR ATTENTION Units can be pumped down for service and recharged A servicer can pump down the refrigerant into the outdoor unit for maintenance or replacement of the indoor unit Also the entire system can be evacuated for maintenance or replacement of the outdoor unit ...

Страница 13: ...13 Heat Controller DVC DVH Inverter Mini Split 5 0 Wiring Diagrams 5 1 Indoor Units B DVC09SD 0 B DVH09SC 0 B DVH12SD 0 B DVH12SD 0 B DVC18SD 1 B DVH18SD 1 ...

Страница 14: ...14 DVC DVH Inverter Mini Split Heat Controller B DVC24SD 1 B DVH24SD 1 ...

Страница 15: ...15 Heat Controller DVC DVH Inverter Mini Split 5 2 Outdoor Units A DVC09SD 0 A DVH09SD 0 A DVC12SD 0 A DVH12SD 0 A DVC18SD 1 A DVH18SD 1 ...

Страница 16: ...ght and easy reach of the unit usually within 3 feet Circuit breakers and disconnect switches should be properly sized based on the required codes and the unit s nameplate requirements Check the unit wiring diagram for the number of conductors required Ensure that the proper AWG gauge and type of wired is used to comply with code and the unit s nameplate Route neatly and protect from sharp edges a...

Страница 17: ...F 0 C 50 C CAUTION 1 If the unit is used outside of the above conditions certain safety protection features may come into operation and cause the unit to operate abnormally 2 If the room relative humidity is greater than 80 the surface of the indoor unit may attract condensation To lessen the chance for condensate dripping set the vertical air flow louver to its maximum angle vertically to the flo...

Страница 18: ...ture is reached and will restart after the compressor top temperature protector restarts 8 3 3 Compressor Discharge Temperature Protection When the compressor discharge temperature is getting high the frequency of the compressor will be limited as stated below When the compressor discharge temperature T5 239 F 115 C for 5s the compressor will stop However when the temperature is between 226 4 F 10...

Страница 19: ... compressor will stop until T3 126 F 52 C 8 4 2 10 Evaporator temperature protection When T2 32 F 0 C the compressor will stop and will restart when T2 41 F 5 C At 32 F 0 C T2 39 F 4 C the compressor frequency will be limited and decreased to the lower level However when the temperature is 39 F 4 C T2 45 F 7 C the compressor will keep the current frequency At T2 45 F 7 C the compressor frequency w...

Страница 20: ...reaches the lowest level where Fmax F1 In zone H where the ΔT is 1 degree or less the compressor will run at the lowest frequency where Fmax F1 for 1hour However when the temperature differential ΔT is less than 2 degrees the compressor will stop Additionally the compressor running frequency is always limited by the current Therefore the running currents also must be taken into account I3COOL I2CO...

Страница 21: ...fference ΔT in indoor room temperature T1 and the set point temperature Ts 4 3 High Low 1 Medium 1 5 When there is a 3 to 4 degree difference ΔT in set and room temperatures the fan runs high speed When the difference in temperature ΔT is between 1 and 3 degrees the fan speed is medium However as the room temperature begins to get closer to the set temp within 1 degree or less temperature differen...

Страница 22: ...equency to its lowest level where Fmax F1 When ΔT is above 5 Degrees in the H zone the compressor will continue to run at Fmax F1 for 1hour When ΔT is greater and 6 degrees the compressor will stop Additionally the compressor running frequency is always limited by the current Therefore the running currents also must be taken into account I3HEAT I2HEAT and I1HEAT refer to various running current va...

Страница 23: ... the unit runs in forced operation mode the indoor fan will run with rating speed and the anti cold wind function is disabled 9 3 3 1 Auto Fan Operation Heating Mode When the fan is placed in auto mode while the unit is in cooling mode the auto fan operation takes into account the difference ΔT in indoor room temperature T1 and the set point temperature Ts 2 5 2 High Low 1 Medium 1 5 The indoor fa...

Страница 24: ...F2 Where xx 60seconds DVC DVH 18K 24K Compressor on off on on on off off off 4 way valve Outdoor fan Indoor fan Indoor fan breeze 10s xx no longer than 10m Frequency F8 30s 10s 10s Frequency F2 Where xx 60seconds for 18K model Where xx 90seconds for 24K model 9 5 Evaporator Coil Temp Protection When T2 140 F 60 C the compressor will turn off but will restart when T2 119 F 48 C When T2 128 F 53 C t...

Страница 25: ...he cooling mode 9 8 Forced Operation Note See Forced Operation information in the Installation instructions When the unit is off pressing the AUTO COOL button on the indoor unit under the main cover panel will force the unit into auto mode If the AUTO COOL button is pressed again within 5 seconds of the first time it was pushed the machine will go into forced cooling mode Pressing the AUTO COOL bu...

Страница 26: ...1 Auto Restart Function In case of a sudden power failure the unit will memorize the set conditions before the power failure When the power returns the unit will resume its previous operation settings except for the swing function automatically after 3 minutes 9 12 Automatic panel function The panel will automatically move to the closing direction at an angle of 50 when the unit is receiving power...

Страница 27: ...t circuit 6 times X E5 T2 Evaporator coil temperature sensor has an open or short circuit 7 times X EC Refrigerant leakage detection error 2 times O F1 T4 Outdoor temperature sensor has an open or short circuit 3 times O F2 T3 Condenser coil temperature sensor has an open or short circuit 4 times O F3 T5 Compressor discharge temperature sensor has an open or short circuit 5 times O F4 Outdoor unit...

Страница 28: ...hock Discharge the power in the capacitors on the board if it contains electrolytic capacitors Electrolytic Capacitors HIGH VOLTAGE CAUTION Note All images are for reference only they may vary from your particular model A DVC09SD 0 A DVH09SD 0 A DVC12SD 0 and A DVH12SD 0 LED1 is Blue Slow flash Standby Mode Fast flash Error ...

Страница 29: ...29 Heat Controller DVC DVH Inverter Mini Split A DVC24SD 1 A DVH24SD 1 LED1 is Blue Slow flash Standby Mode Fast flash Error ...

Страница 30: ...when the unit is operating or in standby mode LED2 is Yellow which will flash slowly when the unit is in standby mode and remain solid when the unit is in operation If this light flashes fast there is an error LED3 is Red and LED4 is Green These LEDs are both controlled by the compressor drive chip See the following chart for more information on how these lights correspond with the indoor unit err...

Страница 31: ... LED3 Red Indoor Unit Display 1 Standby Normal Operation O X N A 2 Operating Normally X O N A 3 IPM malfunction or IGBT over strong current protection X P0 4 Over voltage or too low voltage protection O O P1 5 Over voltage or too low voltage protection O P1 6 Inverter compressor drive error X P4 7 Inverter compressor drive error O P4 8 Inverter compressor drive error P4 ...

Страница 32: ...ise check whether the EEPROM chip plugged in main PCB well Yes No Yes Correct the connection Replace the main PCB Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code EEPROM Has a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For the location of EEPROM chip please refer to the representative photos below Indoor PCB O...

Страница 33: ...he indoor main PCB connected correctly Replace the indoor main PCB Yes Replace the outdoor main PCB No Check all the wiring with outdoor u n i t s Is the wiring to the outdoor main PCB connected correctly Is the reactor connected well Power on Is the error extinguished Replace the indoor main PCB No Yes Measure the resistance of the reactor The one without capacitor If it is zero follow the below ...

Страница 34: ...en the unit running normally the voltage will alternate between 50V to 50V If the outdoor unit has a malfunction the voltage will alternate with positive voltage values If the indoor unit has malfunction the voltage will be a constant value Remark Use a multimeter to test the resistance of the reactor which does not connect with the capacitor The normal value should be around zero ohms Otherwise t...

Страница 35: ...ot receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Possible Causes Connection Error Faulty PCB Trouble shooting 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 ...

Страница 36: ... rotate properly The unit operates normally Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken Check the wires of fan motor Are all the connections good No Yes No Correct the connections No Yes Check whether the main PCB is normal through index 2 Yes Yes Check whether the fan motor is normal through index 1 Yes Replace the fan motor Replace ...

Страница 37: ...nd Weiling 112Ω 8 20 68 Brand Weiling 118 5Ω 8 20 68 Brand Dayang White Black 315Ω 8 20 68 Brand Weiling 150Ω 8 20 68 Brand Weiling 267Ω 8 20 68 Brand Weiling 206Ω 8 20 68 Brand Weiling 82Ω 8 20 68 Brand Weiling 78 5Ω 8 20 68 Brand Dayang 10 3 4 Index 2 Indoor AC Fan Motor Power on and set the fan speed to high After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the v...

Страница 38: ...od Correct the connections No Yes Yes Replace indoor or outdoor main PCB Replace the sensor and check if the problem happen again Check the resistance value of the sensor via table1 p64 and table 2 p65 is it normal No Disconnect the temperature sensor from PCB measure the resistance value of each winding by using the multi meter Temperature Sensors T1 Room Temperature Sensor T2 Indoor Coil Tempera...

Страница 39: ... 171 1 29078 117 243 0 38991 2 28 39 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 29 9058 43 109 4 5705 83 181 1 06448 123 253 0 33246 4 39 28 3459 44 111 ...

Страница 40: ...15 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 29 15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061 2 36 163 3 42 108 26 9 82 180 6 43 122 252 2 007 3 37 155 2 43 109 25 86 83 181 6 228 1...

Страница 41: ...well fixed Correct the installation or replace T2 sensor Does the problem remain again No Is there any leakage Especially the connection parts such as the gas valve and the liquid valve No Shut off the power supply and turn it on 5 seconds later Is it still displaying the error code Replace indoor PCB Yes Repair the leakage and recharge the refrigerant Yes Clear the blocking Yes Is there any block...

Страница 42: ...ted by error and if the wires and connectors are broken Correct the connection or replace the wires and connectors Yes No IPM continuity check Check if the IPM terminal resistance values are uniform Refer to page 64 Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together No Check if the outdoor fan runs properly or the outdoor unit ventilation is good Ye...

Страница 43: ...l resistance value Red Black Several MΩ Red Black Several MΩ P N U N U V V W W Red Note 1 DVC09SD 0 DVH09SD 0 DVC12SD 0 DVH12SD 0 models Measure the black pin and red pin of the motor connector the resistance should be around 50Ω at 20 68 2 DVC18SD 1 and DVH24SD 1 models Measure the black pin and red pin of the motor connector the resistance should be around 84 5Ω at 20 68 3 DVC24SD 1 and DVH24SD ...

Страница 44: ...44 DVC DVH Inverter Mini Split Heat Controller P V P W ...

Страница 45: ...45 Heat Controller DVC DVH Inverter Mini Split P N ...

Страница 46: ...rant volume Refrigerant system is blocked such as capillary or welded point of pipes Yes Check if all the connection especially the connection of OLP Over Load Protector sensor is good Correct the connection No Measure the resistance between the two ports of the OLP Is it zero Yes Replace the OLP No Replace the outdoor control PCB Yes No Remove any obsticles blocking the air inlets or outlets Rech...

Страница 47: ...ogether No Check if the outdoor fan runs properly or the outdoor unit ventilation is good Yes No For MSV1 09HRFN1 MT0W and MSV1 12HRFN1 MT0W models refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved For other models please refer to the below remark check whether the resistance of the fan motor is normal If not replace the fan motor Yes Chec...

Страница 48: ...roller 46 10 3 9 Index Compressor Resistance Measure the resistance value of each winding by using the tester Position Resistance Value DA108X1C 23EZ DA130M1C 31FZ DA150S1C 20FZ Blue Red 1 1Ω 20 68 1 77Ω 20 68 0 95Ω 20 68 Blue Black Red Blue ...

Страница 49: ...67 9 3 8 9 9 1 9 6 11 2 IDT ODT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 PSI 70 59 119 113 117 125 147 PSI 75 63 124 120 126 132 155 PSI 80 67 135 129 132 140 162 IDT ODT 75 23 89 85 29 44 95 35 105 40 56 115 46 11 MPA 70 59 0 82 0 78 0 81 0 86 1 01 MPA 75 63 0 86 0 83 0 87 0 91 1 07 MPA 80 67 0 93 0 89 0 91 0 96 1 12 0 0 2 0 4 0 6 0 8 0 10 0 12 0 75 23 89 85 29 44 95 35 105 40 56 115 46 11 70 ...

Страница 50: ...3 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 PSI 55 439 413 367 330 302 PSI 65 471 435 386 368 339 PSI 75 489 457 403 381 362 IDT ODT 57 53 13 89 11 67 47 43 8 33 6 11 37 33 2 78 0 56 27 23 2 78 5 17 13 8 33 10 56 MPA 55 3 03 2 85 2 53 2 28 2 08 MPA 65 3 25 3 00 2 66 2 54 2 33 MPA 75 3 38 3 15 2 78 2 63 2 49 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 57 53 13 89 11 67 4...

Страница 51: ...51 Heat Controller DVC DVH Inverter Mini Split This page is left intentionally blank ...

Страница 52: ...52 DVC DVH Inverter Mini Split Heat Controller 4 2014 AITONS MARS 35 Brownridge Road Unit 6 Halton Hills ON L7G 0C6 1 888 744 2911 info aitons com www aitons com ...

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