Toyotomi MTG A371DV Скачать руководство пользователя страница 24 | Manualshive

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8. Electronic function

8.1 Abbreviation

T1: Indoor room temperature

T2: Coil temperature of evaporator

T3: Coil temperature of condenser

T4: Outdoor ambient temperature

T5: Compressor discharge temperature

8.2 Display function

8.2.1 Icon explanation on indoor display board.

ON/OFF indicator

This indicator illuminates when the air conditioner is in operation.

PRE.-DEF. Indicator (For Cooling & Heating models only)

This indicator illuminates when the air conditioner starts defrosting automatically or when the

warm air control feature is activated in heating mode.

Auto Mode

This indicator illuminates when the air conditioner is in Auto Mode.

Turbo indicator

This indicator illuminates when the air conditioner is in turbo operation.

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Содержание MTG A371DV

Страница 1: ...Service Manual Model MTN MTG A371DV...

Страница 2: ...h and the elevation 12 6 4 Installation for the first time 13 6 5 Adding the refrigerant after running the system for many years 16 6 6 Re installation while the indoor unit need to be repaired 17 6 7...

Страница 3: ...r the product there is risk of fire or electric shock Always ground the product There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire of...

Страница 4: ...electric shock Do not touch operation the product with wet hands Do not place a heater or other appliance near the power cable There is risk of fire and electric shock Do not allow water to run into...

Страница 5: ...damage or failure or unintended operation Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION Always check for g...

Страница 6: ...ilter 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 hand...

Страница 7: ...Ionizer O Silver Ico Filter O Vitamin C Filter O 3M HAM Filter O Bio Filter O Golden Fin O killer of formaldehyde Compressor Crankcase Heater O Self Clean Follow me 8 degree heating O Heat compensati...

Страница 8: ...6 3 Dimension 3 1 Indoor Unit Model W D H MTN A371DV 998 235 322...

Страница 9: ...7 3 2 Outdoor Unit More than 30cm More than 60cm More than 70cm More than 30cm More than 60cm Service space Fence or obstacles Model W D H MTG A371DV 900 315 860...

Страница 10: ...INDOOR OUTDOOR LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR 2 WAY VALVE 3 WAY VALVE CHECK VALVE Heating Model only CAPILIARY TUBE REVERSING VALVE Heating Model onl...

Страница 11: ...9 5 Wiring Diagram 5 1 Indoor Unit MTN A371DV...

Страница 12: ...E RED YELLOW ORANGE CN3 CN2 CN1 CN15 CN14 CN16 C t 1 N A YELLOW ORANGE O U T D O O R M A I N P C B C O M P R E S S O R Y G RED BLUE BLACK W H I TE B LA C K C A P A C I T O R H E A T E R1 O P T I O N A...

Страница 13: ...4 6500 663kgf cm 6700 683kgf cm 6 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet Rated current of appliance Nominal cross sectiona...

Страница 14: ...rd length m Max Elevation B m Max Length A m Additional refrigerant g m Gas Liquid MTN A371DV MTG A371DV 5 8 16 3 8 9 53 5 10 25 40 Caution The capacity test is based on the standard length and the ma...

Страница 15: ...ft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump 1 Completely tighten the flare nuts of the indoor and out...

Страница 16: ...indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve...

Страница 17: ...rant if the pipe length 5m Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to...

Страница 18: ...nnect the charge hose to the 3 way service port open the 2 way valve and the 3 way valve Connect the charge hose to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinde...

Страница 19: ...e the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem c...

Страница 20: ...by the refrigerant 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 Leav...

Страница 21: ...tighten the service port cap to a torque 18N m Be sure to check the gas leakage 6 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system Procedure 1 Confirm th...

Страница 22: ...on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g eac...

Страница 23: ...ates in excess of this value the surface of the air conditioner may attract condensation water In this case please set the vertical air louver to its maximum angle vertically to the floor and set the...

Страница 24: ...ay board ON OFF indicator This indicator illuminates when the air conditioner is in operation PRE DEF Indicator For Cooling Heating models only This indicator illuminates when the air conditioner star...

Страница 25: ...after the compressor top temp protector restart 8 3 3 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as belo...

Страница 26: ...g terminal of the compressor then the compressor is heated without operation Preheating release condition If T4 5 or the compressor starts running the preheating function will stop 8 3 8 Zero crossing...

Страница 27: ...g to the outdoor ambient temp During the 7 minutes the frequency limitation is active 7 minutes later the compressor running frequency will be controlled as below 3 5 3 0 2 5 2 0 1 5 1 0 0 5 0 5 1 0 A...

Страница 28: ...the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency Note When AC is in hold zone for 3 minutes the compressor frequency will rise to the higher...

Страница 29: ...e former frequency T3 60 for 5 seconds the compressor will stop until T3 52 8 4 2 5 Evaporator temperature protection T2 0 the compressor will stop and restart when T2 5 0 T2 4 the compressor frequenc...

Страница 30: ...6 5 If users switch on AC by remote controller the compressor will run at the Fmax frequency for 7 minutes according to outdoor ambient temp During the 7 minutes the frequency limitation is active 7 m...

Страница 31: ...cy to the lower level until to F1 H Run at F1 for 1h if T1 Ts T 6 the compressor will stop Meanwhile the compressor running frequency is limited by the current I3HEAT I2HEAT I1HEAT Off Decrease Hold R...

Страница 32: ...emperature rising the indoor fan will be forced to run 127 seconds with breeze During this period the anti cold wind is disabled If the machine runs in rating capacity test mode the indoor fan will ru...

Страница 33: ...sfied then the program judges if T2 has decreased more than 5 When T2 has decreased more than 5 enter the defrosting mode No matter what value T4 is if the machine runs with T3 3 for more than 120 min...

Страница 34: ...32 Defrosting action For MTN A371DV Model FD FD1 MTN A371DV 90 100...

Страница 35: ...ure 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 Fan only T 1 Heating Indoor fan wil...

Страница 36: ...ine to forced auto mode After this the machine will turn into forced cooling mode if pressing the button once again within 5 seconds In forced auto forced cooling or any other operation mode pressing...

Страница 37: ...low speed When heating the setting temperature decreases 1 be higher than 17 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed as low speed Anti cold wind func...

Страница 38: ...e controller Ionizer will be turned off automatically if indoor fan stops running due to malfunctions or anti cold wind When indoor fan restarts after malfunctions being eliminated and anti cold wind...

Страница 39: ...ol E5 Open or short circuit of outdoor temperature sensor or outdoor unit EEPROM parameter error E6 Open or short circuit of room or evaporator coil temperature sensor E7 Outdoor fan speed has been ou...

Страница 40: ...1 EEPROM parameter error diagnosis and solution Shut off the power supply and turn on it 5s later The problem comes out again Is the EEPROM chip plugged in indoor PCB well No Correct the connection Re...

Страница 41: ...LED4 red bright and LED1 yellow blinking on outdoor PCB The power supply for outdoor PCB is fail Check the wiring on outdoor PCB comparing with wiring plate Is the connection good The unit does not wo...

Страница 42: ...check if the errors happen again Is the fan motor connector and connection good The unit does not work normally Turn off the unit rotate the cross fan Does it rotate freely No Disassemble the connecti...

Страница 43: ...protector normal No No Is the connection good Is refrigerant circulation volume normal Reconnect it Does the compressor operate Replace it Is the power supply good Replace the outdoor e box Make sure...

Страница 44: ...s is alarm signal when the main chip can t detect over zero signal When such failure occurs the main control board must have fault Yes Replace the outdoor PCB Replace inverter compressor Reconnect and...

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