Technibel MAFK90R5TAAA Service Manual

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SERVICE MANUAL

MAFK90R5TAAA + GRFK90R5TAAA

MAFK120R5TAAA + GRFK120R5TAAA

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Page 1 SERVICE MANUAL MAFK90R5TAAA + GRFK90R5TAAA MAFK120R5TAAA + GRFK120R5TAAA...
Page 2: Table Of Contents
CONTENTS Contents Safety precautions Installation Block diagram Trouble shooting Fault diagnosis by symptom Control specification To disassemble mechanical parts Exploded views and parts list Wiring diagrams...
Page 3: Safety Precautions
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.
Page 4 INSTALLATION Installation diagram of indoor unit and outdoor unit Confirm the installation position by the mark of the indoor mounting plate. Note Different models have different mounting plates, the installing charts of this book are presented just for the purpose of illustration, please take the real objects as reference.
Page 5 INSTALLATION Securing the mounting plate and drill on the wall Note:Different models have different mounting plates, the installing charts of this book are presented just for the purpose of illustration, please take the real objects as reference. Secure the mounting plate The mounting plate should be attached to the structural part of wall (post etc).
Page 6 INSTALLATION Wiring Diagram 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. Connecting cable Connect the cable.
Page 7 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 Decline Dip hose Standing water 50mm or less downward downward into water above floor Water Water Water...
Page 8 INSTALLATION Installation diagram of indoor unit and outdoor unit Wiring Outdoor unit terminal Outdoor unit terminal Connecting Connecting cable cable Wiring For Above 6000W Model (Above 21000BTU/h Model) 1 Remove the self-tapping screws (2 pcs) The cable wire can be led from the back hole on the maintenance board and take out the of the piping hole or ejecting hole.
Page 9 INSTALLATION Notice: 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. MODEL SPECS (Interconnection cord) 1.0mm 2700W(10000BTU/h) 3000W(11000BTU/h) -4000W(15000BTU/h) 1.5mm 4500W(18000BTU/h) -8000W(28000BTU/h)
Page 10 INSTALLATION 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 Bottom and joint together. Double-channel drain joint Drain hose Joint of the connecting pipe Put some seal oil to cover the joint and the flare.
Page 11 INSTALLATION 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) (Cool only type)added amount (g) (Heat pump type)added amount (g)
Page 12: Block Diagram
INSTALLATION 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.
Page 13: Trouble Shooting
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”...
Page 14: Fault Diagnosis By Symptom
FAULT DIAGNOSIS BY SYMPTOM Fan motor or its capacitor faults. Fan motor Loose connection or badly contact. error No cooling Control circuit error. Voltage may appear a little lower or higher. compressor Loose or wrong connection. does not operate Compressor faults or jumps for overloading. No cooling effect at all Control circuit error.
Page 15 FAULT DIAGNOSIS BY SYMPTOM Fan motor or its capacitor faults. Fan motor Loose connection or badly contact. error No heating Control circuit error. Voltage may appear a little lower or higher. compressor Loose or wrong connection. does not operate Compressor faults or jumps for overloading. No heating effect at all Control circuit error.
Page 16 FAULT DIAGNOSIS BY SYMPTOM Fixing bolts somewhere may loose or rub, some Collision sound spare parts may not match very well. of the machine Noisy Refrigerant circulation or pressure change of Flowing sound refrigerant while switch on/off. of the liquid Noise from indoor unit Vane imbalance or distortion, rupture;...
Page 17 FAULT DIAGNOSIS BY SYMPTOM Switching on the air conditioner Junction wire looses and collides with the outer The current leakage switch cover. jumps to turn off Degraded capability of wire insulation. Insulation capability of Check the resistance of every component some components has lowered.
Page 18: Control Specification
CONTROL SPECIFICATION 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 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;...
Page 19 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;...
Page 20 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.
Page 21 CONTROL SPECIFICATION FAN MODE In this mode, the outdoor unit does not operate. The indoor fan alone operates. Press UP & DOWN SWING button or LEFT & RIGHT SWING button to change air flow direction. Press FAN SPEED button to change the fan speed of indoor unit. LIGHT-WAVE MODE (only applied to light-wave series) Every press of LIGHT-WAVE button, the air conditioner will cycle in the order of enter/quit light-wave mode.
Page 22 CONTROL SPECIFICATION SLEEP mode Normal sleep When the air conditioner is in cooling and dry mode, the indoor fan runs at low speed After one hour of operation the set temperature will increase by 1 .One hour later, the set temperature will increase by once more.
Page 23 CONTROL SPECIFICATION Sleep mode 3 When the air conditioner is in cooling and dry mode and 23 st 16 , during the 3 hours after sleep mode 3 start up, the set temperature will increase by 1 every hour .The unit will continue operating at 3 above the set temperature.
Page 24: To Disassemble Mechanical Parts
TO DISASSEMBLE MECHANICAL PARTS Stop operation of the air conditioner and remove the power cord before repairing the unit. The following pictures taking P1 as an example are presented just for the purpose of illustration, please take real object as major reference. Indoor unit Parts Procedure...
Page 25 TO DISASSEMBLE MECHANICAL PARTS Parts Procedure Remark 1.Loosen the earth screw in Electrical evaporator. parts 2.Loosen the s tepping motor line, and p ull softly the indoor pipe temperature sensor out from the pipe casing. 3.Push the hook outside to take the electrical box out easily.
Page 26 TO DISASSEMBLE MECHANICAL PARTS 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. Evaporator 3.Separate the evaporator from the indoor unit.
Page 27 TO DISASSEMBLE MECHANICAL PARTS Outdoor unit Parts Procedure Remark Cabinet 1.Turn off the unit and remove the power cable. 2.Remove the upper cabinet, the front cabinet and back cabinet. 1.Remove the nut flange. Fan motor & (Turn to the right to remove propeller fan as it a left turned screw ) 2.separate the propeller fan...
Page 28: Exploded Views And Parts List
XLT02£ 02E W HT W HT CAPACI TO R TO I NDO O R YLW / GRN W HT UNI T XLT01- 225PE STATI C NEGATI VE LO UVER M O TO R FAN M O TO R AUX HEATER DUST CATCHER I O N SO LENO I DE...

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Grfk90r5taaa Mafk120r5taaa Grfk120r5taaa