Split air conditioner Wall mounted Type Service manual MXI-09HC001 / MXO-09HC001 MXI-12HC001 / MXO-12HC001 MB FRIGO Grupa d.o.o., Bani 81, 10010 Zagreb, tel: 01/66 08 002, fax: 01/66 08 005 www.maxon.com.hr, e-mail: maxon@mbfrigo.
CONTENTS Contents 1 Safety precautions 2 Installation 2 Block diagram 11 Trouble shooting 12 Fault diagnosis by symptom 13 Control specification 17 To disassemble mechanical parts 21 Exploded views and parts list 25 Wiring diagrams 39 1
SAFETY PRECAUTIONS The following safety precautions must be taken when using your air conditioner. 1. Warning: Prior to repair, disconnect the power cord. 2. Use proper parts: use only exact replacement parts. (Also, we recommend replacing parts rather than repairing them.) 3. Use the proper tools: use the proper tools and test equipment, and know how to use them. Using defective tools or test equipment may cause problems later-intermittent contact, for example. 4.
INSTALLATION Installation diagram of indoor unit and outdoor unit Confirm the installation position by the mark of the indoor mounting plate. or 105m above m 155mm above 250mm above or or Above 20mm The copper pipe can be led from back, right, underside, or left-back side.
INSTALLATION 1 Securing the mounting plate and drill on the wall Secure the mounting plate The mounting plate should be attached to the structural part of wall (post etc).
INSTALLATION 2 Wiring Open the front grille; Remove the screw from electrical box cover, pull the Screw electrical box cover away from the unit and set aside. Remove the screw from fastener, pull the fastener away from the unit and set aside. Connect the cable. Indoor unit terminal Replace the fastener and electrical box cover. Diagram Connecting cable NOTE: The appliance shall be installed in accordance with national wiring regulations. The appliance must not be installed in the laundry.
INSTALLATION Arrangement of the drain hose To drain the condensate water easily, the drain hose should be declined downwards. The following 5 arrangement methods are incorrect. Decline downward Decline downward Dip hose into water Standing water air Water leak Water leak (Fig. 1) (Fig. 2) 50mm or less above floor Water leak (Fig. 5) (Fig. 4) (Fig. 3) Drain hose If you find the drain hose not long enough to connect with the indoor unit, you can extend it with the hoses in the accessory box.
INSTALLATION Installation diagram of indoor unit and outdoor unit 1 Wiring Outdoor unit terminal Outdoor unit terminal Connecting cable Connecting cable or Wiring For Above 6000W Model (Above 21000BTU/h Model) 1 Remove the self-tapping screws (2 pcs) on the maintenance board and take out the maintenance board. The cable wire can be led from the back hole of the piping hole or ejecting hole. Please utilize outdoor pipe support when the cable wire is led from the backside.
INSTALLATION Notice: 2 If the signal wire has to be bought separately, choose electric wire above 0.75mm. If the interconnection cord for power supply has to be replaced, please see the following table for reference. SPECS (Interconnection cord) MODEL 1.0mm 2700W(10000BTU/h) 3000W(11000BTU/h) -4000W(15000BTU/h) 4500W(18000BTU/h) -8000W(28000BTU/h) 1.5mm 2.5mm 2 2 2 WARNING: Please take the electric circuit diagram attached to the indoor/outdoor units as major reference while installing.
INSTALLATION 2 Installation of the drain joint(only for heat pump type) Insert the outdoor double-channel drain joint in one of the bottom holes of the suitable size then connect drain hose and joint together. Bottom Double-channel drain joint Drain hose 3 Joint of the connecting pipe Put some seal oil to cover the joint and the flare. Align the centre of joint in line with that of flare and tighten the nut of connecting pipe with wrench.
INSTALLATION 6 Adding refrigerant If the connecting pipe is longer than 7 metres, add refrigerant as needed. (Cool only type) added amount A=(Lm-7m) 15g/m ; (Heat pump type)added amount A= (Lm-7m) 50g/m. ( A: amount of added refrigerant, L: the length of connecting pipe) The length of connecting pipe (m) 7 8 9 10 (Cool only type)added amount (g) 0 15 30 45 (Heat pump type)added amount (g) 0 50 100 150 Exhaust the air as the above-mentioned method.
INSTALLATION 8 Operation test Before test operation, wiring safety inspection must be carried out carefully again. 1. Emergency switch operation: Every press of emergency switch, the air conditioner runs as in the following order: Cool only type: Cool Shut off Heat pump type: Cool Heat Shut off 2. Remote controller operation: If the indoor unit sounds like Di, Di when pressing I/O button, that indicates the air conditioner is under the operation of remote controller.
TROUBLE SHOOTING Items to be checked first 1. Is the voltage of the power correct? The input voltage shall be rating voltage 10%. The air conditioner may not operate properly if the voltage is out of this range. 2. Is the link cable connecting the indoor unit and the outdoor unit linked properly? Please refer to the “wiring diagram” Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. 3.
FAULT DIAGNOSIS BY SYMPTOM Fan motor or its capacitor faults. Fan motor error Loose connection or badly contact. No cooling Control circuit error. Voltage may appear a little lower or higher. compressor does not operate Loose or wrong connection. Compressor faults or jumps for overloading. No cooling effect at all Control circuit error. Leakage of refrigerant Recharge the refrigerant at leaking place. The capillary, pipeline are blocked or the valve is not open or the connecting tube is folded flat.
FAULT DIAGNOSIS BY SYMPTOM Fan motor or its capacitor faults. Fan motor error Loose connection or badly contact. No heating Control circuit error. Voltage may appear a little lower or higher. compressor does not operate Loose or wrong connection. Compressor faults or jumps for overloading. No heating effect at all Control circuit error. Leakage of refrigerant Recharge the refrigerant at leaking place.
FAULT DIAGNOSIS BY SYMPTOM Fixing bolts somewhere may loose or rub, some spare parts may not match very well. Collision sound of the machine Noisy Flowing sound of the liquid Refrigerant circulation or pressure change of refrigerant while switch on/off. Sound of the running fan motor Vane imbalance or distortion, rupture; loose screw of vane. Noise from indoor unit Plastic pieces deform due to expansion when hot and shrink when cold. Or some spare parts may not match very well.
FAULT DIAGNOSIS BY SYMPTOM Switching on the air conditioner Junction wire looses and collides with the outer cover. The current leakage switch jumps to turn off Degraded capability of wire insulation. Insulation capability of some components has lowered. Check the resistance of every component by multimeter Water comes into the plug or electric components.
CONTROL SPECIFICATION 1 ABBREVIATION ST: Setting Temperature PT: Indoor coil Pipe Temperature RT: Room Temperature OT: Outdoor coil pipe temperature OFAN: Outdoor fan IFAN: Indoor fan COMP: Compressor 2 OPERATION OF MAIN BOARD COOL MODE The ST at cool mode is adjustable within16 -31 . When RT ST, both the compressor and the outdoor fan start; When RT
CONTROL SPECIFICATION HEAT MODE If the air conditioner is off and then turned on while set at COOL ,HEAT or DRY mode, it will take approximately 3 minutes for the compressor to start. The ST at heat mode is adjustable within16 -31 . When RT ST, the compressor stops; when RT
CONTROL SPECIFICATION DRY MODE In this mode, the air conditioner automatically sets the room temperature and this temperature is incontrollable by remote controller. The initial ST =RT-2 . Control during dry mode: a. When RT<15 , dry mode is not available; when RT 15 , the compressor intermittently runs under the influence of TS and RT. b.
CONTROL SPECIFICATION FAN MODE Indoor fan runs at the set speed while compressor and outdoor fan are turned off. Indoor fan speed can be adjusted for low, medium and high. SLEEP MODE Sleep mode in cooling and drying running. A. The indoor fan runs at low speed. B. After one hour of operation the set temperature will increase by 1 . One hour later, the set temperature will increase by 1 once more. The unit will then continue operating at 2 above the set temperature. Sleep mode in heating running. A.
TO DISASSEMBLE MECHANICAL PARTS Stop operation of the air conditioner and remove the power cord before repairing the unit. The following pictures taking L1 series as an example are presented just for the purpose of illustration. Indoor unit No Parts 1 Front grille Procedure Remark 1.Stop the air conditioner operation and block the main power. 2.Contract the second finger to the left ,and right handle and pull to open the inlet grille. 3.Draw away signal line. 4.Take the left and right filter out.
TO DISASSEMBLE MECHANICAL PARTS No Parts 2 Electrical parts Procedure Remark 1.Loosen the earth screw in evaporator. 2.Loosen the stepping motor line, and pull softly the indoor pipe temperature sensor out from the pipe casing. 3.Push the hook outside to take the electrical box out easily. 4.Separate the electrical box from the indoor unit. 3 Ass’y tray drain 1.Push the left and right hooks to make the ass’y pulled out.
TO DISASSEMBLE MECHANICAL PARTS No Parts Procedure Remark 2.Separete the ass’y tray drain from the body. 1.Push the left hook and separate the left part out of evaporator. 2.Push the right hook and separate the right part out of evaporator. 4 Evaporator 3.Separate the evaporator from the indoor unit. 5 Fan motor and 1.Separate the fan motor cross fan from the fan.
TO DISASSEMBLE MECHANICAL PARTS Outdoor unit No Parts Procedure Remark 1 Cabinet 1.Turn off the unit and remove the power cable. 2.Remove the upper cabinet, the front cabinet and back cabinet. 2 Fan motor & propeller fan 1.Remove the nut flange. (Turn to the right to remove as it a left turned screw ) 2.separate the propeller fan from fan motor. 3.Loosen the fixed screw of fan motor,separate the fan motor from outdoor unit 3 Ass'y control 1.
Exploded Views and Parts List Indoor unit AUS-07C(H)53R010Lx AUS-09C(H)53R010Lx AUS-12C(H)53R130Lx AUS-12C(H)53R150Lx 25
Exploded Views and Parts List Indoor unit AUS-07C(H)53R010Lx AUS-09C(H)53R010Lx AUS-12C(H)53R130Lx AUS-12C(H)53R150Lx No. English Part Name qty. remark 2 left and right are sameness 2 Front panel 1 L14 L15 L16 parted as upper panel and lower panel 3 LED 1 1 air filter 4 Electrical control box 1 5 Enclosure 1 No.
Exploded Views and Parts List Outdoor unit AUS-07C53R010Lx AUS-09C53R010Lx 27
Exploded Views and Parts List Outdoor unit AUS-07C53R010Lx No. English Part Name AUS-09C53R010Lx Quantity No.
Exploded Views and Parts List Outdoor unit AUS-07H53R010Lx AUS-09H53R010Lx 29
Exploded Views and Parts List Outdoor unit AUS-07H53R010Lx Number Name AUS-09H53R010Lx Quantity Number Name Quantity 1 Air outlet grille 1 28 Right handle 1 2 Front panel 1 29 Outdoor pipe sensor 1 3 Left handle 1 4 Top cover 1 5 Outdoor unit fan 1 6 Outdoor fan motor 1 7 Outdoor fan motor supporter 1 8 Condenser 1 9 Partition 1 10 Four way valve 1 11 Electrical install board supporter 1 12 Left back side plate 1 13 Back cover 1 14 Right back side plate 1
Exploded Views and Parts List Outdoor unit AUS-12C53R150Lx 31
Exploded Views and Parts List Outdoor unit No AUS-12C53R150Lx English Part Name Quantity No.
Exploded Views and Parts List Outdoor unit AUS-12H53R150Lx 33
Exploded Views and Parts List Outdoor unit No. AUS-12H53R150Lx English Part Name Quantity No.
Exploded Views and Parts List Outdoor unit AUS-12C53R130Lx 35
Exploded Views and Parts List Outdoor unit AUS-12C53R130Lx No. English Part Name Quantity No.
Exploded Views and Parts List Outdoor unit AUS-12H53R130Lx 37
Exploded Views and Parts List Outdoor unit AUS-12H53R130Lx No. English Part Name Quantity No.
Wiring Diagrams Indoor unit AUS-07C53R010Lx AUS-09C53R010Lx AUS-12C53R130Lx AUS-12C53R150Lx IFAN Outdoor unit AUS-07C53R010Lx AUS-09C53R010Lx AUS-12C53R130Lx AUS-12C53R150Lx 39
Wiring Diagrams Indoor unit AUS-07H53R010Lx AUS-12H53R130Lx AUS-09H53R010Lx IFAN Outdoor unit AUS-07H53R010Lx AUS-12H53R130Lx AUS-09H53R010Lx 40
Wiring Diagrams Indoor unit AUS-12H53R150Lx IFAN Outdoor unit AUS-12H53R150Lx 41
