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SERVICE MANUAL

PTAC SERIES

7,000-15,000 BTU/H

Содержание MWDUP-07AEN1-MK9

Страница 1: ...SERVICE MANUAL PTAC SERIES 7 000 15 000 BTU H...

Страница 2: ...otor 5 5 Operation of compressor 5 6 Dip switches and Jumper selection 5 7 Functions for Front desk switch panel and Wire Controller 6 Unit components 7 Installation details 7 1 How to install the uni...

Страница 3: ...There is risk of fire or electric shock Install the panel and the cover of control box securely There is risk of fire of electric shock Always install a dedicated circuit and breaker Improper wiring...

Страница 4: ...ds There is risk of fire or electric shock 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 electric parts It may c...

Страница 5: ...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 gas refrig...

Страница 6: ...filter reduces the efficiency of the air conditioner and could cause product malfunction or damage Do not insert hands or other object through air inlet or outlet while the product is operated There a...

Страница 7: ...tinuous mode HEAT The range of set temperature is 17 62 29 84 For heat pump models the unit can alternate to run between in reverse cycle heat mode and electric heater mode according to the difference...

Страница 8: ...tton the fan speed cycles through the settings as follows HIGH MED LOW HIGH DISPLAYS Shows the set temperature in or While on Fan only mode it shows the room temperature Control code LC Pads on the co...

Страница 9: ...emperature sensor T3 oS Open or short circuit of outside temperature sensor T4 HS Open or short circuit of exhaust temperature sensor T5 or T6 Other codes LO Room temperature is lower than 0 32 HI Roo...

Страница 10: ...sion 2 no rear grille and rear net but include sleeve Dimension 3 include sleeve and rear net Dimension 4 include sleeve rear net and rear grille WxHxD mm WxHxD inch 1067x406x532 42 0x15 9x20 9 1067x4...

Страница 11: ...frigeration system This will help to understand the refrigeration cycle and the flow of the refrigerant in the Heat Pump Cycle LIQUID SIDE HEAT EXCHANGE EVAPORATOR CHECK VALVE Heating Model only CAPIL...

Страница 12: ...on 5 3 1 The compressor functions protection with a delay of three minutes 5 3 2 Sensor protection at open or short circuit 5 3 3 Evaporator anti freezing protection at cooling mode 5 4 Operation of f...

Страница 13: ...tes at the heat pump and cooling mode see FIG B T4 Operate on low speed T03 T04 Operate on high speed FIG B When T4 T03 and lasts for 1 minute the fan motor will operates at low speed When T4 T04 and...

Страница 14: ...heater stop working 5 5 Operation of compressor 5 5 1 The compressor operates at cooling mode as below Operation condition T1 Ts 0 4 T1 Ts Compressor on Compressor off compressor on T1 Ts 4 compressor...

Страница 15: ...be off If the T2 protection gets started the fan motor also does not work 5 5 2 2 The Heat pump operates as below The Heat pump s operation mode is in accordance with the way of compressor s working...

Страница 16: ...t be higher than 29 84 Electric Heat Only for heat pump unit only This setting is typically used for Emergency Heating Wall Thermostat Enable A wired wall thermostat can be connected to the unit If i...

Страница 17: ...nect the units 2 Wired controller the digital LED will display LC Reserved if a wired controller is connected if the communication portal is one way the buttons on the control panel will be invalid No...

Страница 18: ...of PTAC units x 1va Transformer Size va Example 110 PTAC units x1va 110va Transformer 2 Following are American Wire Gauge recommended sizes AWG WIRE SIZE NO 24 22 20 18 16 MAX LENGTH ft 400 600 900 15...

Страница 19: ...figure 7 Installation details 7 1 How to install the unit iINSTALLATION CAUTION There are sharp edges that can cause serious cuts When lifting the air conditioner it is HEAVY Use 2 people to lift www...

Страница 20: ...he unit is installed securely and firmly When installing the sleeve make certain there is Dimension of air conditioner nothing within 20 of the back that would interfere with heat radiation and exhaus...

Страница 21: ...FRONT PANEL AND CASE Turn unit off and disconnect power supply To clean use water and a mild detergent Do not use bleach and abrasivers Some commercial cleaners may damage the plastic parts OUTDOOR CO...

Страница 22: ...filter twice a year or as required Make sure to remove the shipping screw from the vent door See Fig 5 Rotate the vent control lever to open the vent door See Fig 6 Remove four screws from the vent d...

Страница 23: ...emp DB Indoor air temp DB 8 Operation characteristics 8 1 Cooling operation 45 40 35 30 25 20 5 10 15 20 25 30 35 40 Indoor air temp DB 8 2 Heating operation 35 30 25 20 15 5 5 15 25 Outdoor air temp...

Страница 24: ...reach of the service cord The standard cord connected 265V units require an accessory electrical subbase for operation Power Cord Protection The power cord for230 208v units provide power cord fire p...

Страница 25: ...WDUP 09EEN1 MK3 MWDUP 12AEN1 MJ5 6 30P 30A 240V MWDUP 12EEN1 MJ7 MWDUP 15AEN1 MI6 MWDUP 15EEN1 MI5 265 V 265 V MWDUP 07AEN1 UK9 7 20P 20A 277V MWDUP 07EEN1 UK9 MWDUP 09AEN1 UK3 MWDUP 09EEN1 UK3 MWDUP...

Страница 26: ...t circuit of T3 temperature sensor oS Open or short circuit of T4 temperature sensor HS Open or short circuit of T5 or T6 temperature sensor Lo Temperature is lower than display range 0 32 HI Temperat...

Страница 27: ...sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Supposed causes Wiring mistake Faulty sensor Faulty PCB Troubleshooting Check the connection between temperat...

Страница 28: ...ses Wiring mistake Faulty display board Faulty main control board Troubleshooting www mideaaircon com 26 Communication malfunction between main control board and display board Check the signal wire be...

Страница 29: ...peed GL HI FAN High fan speed GH 4 WAY 4 way valve for heat pump model B HEAT2 Electrical heater 2 W HEAT1 Electrical heater 1 W COMP Compressor Y 24V N 24VAC terminal N COM C 24V L 24VAC terminal L R...

Страница 30: ...ay be set for instead of UNIT MAKING NOISES Clicking gurging and whooshing noises are normal during operation of unit WATER DRIPPING OUTSIDE If a drain kit has not been installed condensation runoff d...

Страница 31: ...5635 29 84 8 3357 56 133 2 7382 3 37 4 29 9058 30 86 7 9708 57 135 2 6368 4 39 2 28 3459 31 88 7 6241 58 136 2 5397 5 41 26 8778 32 90 7 2946 59 138 2 4468 6 42 8 25 4954 33 91 6 9814 6 6835 6 4002 6...

Страница 32: ...GD Midea Air Conditioning Equipment Co Ltd RAC Overseas Sales Company Midea headquarter building No 6 Midea Avenue Beijiao ShunDe Foshan GuangDong P R C 528311 Website www mideaaircon com...

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