Technibel MPAFIA0R5IAA Service Manual Download Page 28

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7-7

AIR CONDITIONER OPERATES, BUT ABNORMALITIES ARE OBSERVED.

2 - OPERATION DOES NOT SWITCH FROM HEAT TO COOL AND FROM COOL TO HEAT

Remote controller

unit may be defective

Receiver assy

may be defective

Check the connection
of reversing valve coil

Check resistance of

reversing valve coil

Summary of Contents for MPAFIA0R5IAA

Page 1: ...TECHNICAL DATA SERVICE MANUAL INDOOR UNIT MPAFIA0R5IAA SPLIT SYSTEM AIR CONDITIONER Model No Product Code No MPAFIA0R5IAA 38 7104 074 0 8180 590 01 10 2012...

Page 2: ...ing to touch the refrigerant tubing compressor or any moving parts of the fan Do not use multi core cable when wiring the power supply and control lines Use separate cables for each type of line When...

Page 3: ...nction 17 5 16 Capacity Test Mode 17 5 17 Diagnostic 18 5 18 Indoor unit jumpers Configuration 19 5 19 Outdoor unit jumpers Configuration 19 5 20 Contacts for building automation 20 6 INDOOR UNIT AND...

Page 4: ...efrigerant tube kit Air clean filter Dimensions Weight Unit dimensions Height mm Width mm Depth mm Package dimensions Height mm Width mm Depth mm Weight Net kg Shipping kg Shipping volume m3 DATA SUBJ...

Page 5: ...ating temp Open C Close Run capacitor F VAC Flap Motor Type Model Rating Coil resistance Ambient temp 25 C Heat Exch Coil Coil Rows Fin pitch mm Face area DATA SUBJECT TO CHANGE WITHOUT NOTICE 1 BRN W...

Page 6: ...Primary Secondary Capacity Coil resistance at 25 C Thermal cut off temp Thermistor Coil sensor Resistance k Thermistor Room sensor Resistance k NTC THERMISTOR 10 at 25 C NTC THERMISTOR Primary Seconda...

Page 7: ...2 DIMENSIONAL DATA 7...

Page 8: ...Fan speed High Heating Horizontal distance m Axis air verocity m s Vertical distance m Room air temp 27 C Fan speed High Cooling 0 1 2 3 4 0 1 2 3 4 5 6 7 8 9 Flap angle 0 Axis air velocity 0 Flap an...

Page 9: ...4 ELECTRICAL DATA 4 1 Electric Wiring Diagrams 9...

Page 10: ...but in any case The minimum time interval between an OFF and a ON operation is not lower than 3 minutes The minimum operating time is not lower than 3 minutes The maximum acceleration deceleration ra...

Page 11: ...The minimum off time of compressor is 3 minutes The indoor fan can change speed only after it has operated at the same speed for 30 sec if in AUTO and 1 sec for the other settings High Med Low 5 3 He...

Page 12: ...two modes is according to the above graph and following table If 3 C Dt 1 C and the compressor is off for more than 1 hour If Dt 3 C and compressor is off for more than 3 minutes If 1 C Dt 3 C and the...

Page 13: ...1 C LEVEL 2 FMO switches 9 minutes off and 3 minutes ON 15 C FMI switches between L and LL every 30 seconds RV off CM off 15 C DRY OFF ZONE FMO off FMI off RV off SPT Set Point Temperature 5 6 Fan Mo...

Page 14: ...coil temperature ICT decreases and acts by decreasing the compresor speed The system exit this protection routine when ICT temperature rises above 5 C 5 9 2 Cold draft This feature prevents the supply...

Page 15: ...built in thermistor is always monitored by the control system and kept operating in a safe area If temperature exceeds 100 C operation is automatically stopped 5 10 4 Outdoor fan power module overhea...

Page 16: ...l this mode remains active System exits defrost protection as soon as 14 C on the outdoor coil are detected and in any case if at least 12 minutes are elapsed from the start of the defrost cycle 5 12...

Page 17: ...for more than 5 seconds the IFEEL and FAN buttons on the remote controller With this option active the OPERATION TIMER and STANDBY lamps are switched off even during operation they activates only in c...

Page 18: ...more than one trouble present is always showed at first the one with the highest priority 1 2 3 etc Sensor damaged means a situation where sensor is short circuited or opened In case of damaged senso...

Page 19: ...ing to the following table JUMPER STATUS JP1 open JP2 open 5 19 Outdoor Unit Jumpers Configuration Unit is shipped with jumpers set according to the following table JUMPER STATUS JP1 open JP2 closed J...

Page 20: ...y according to the inputs coming from wireless remote controller 5 20 2 OUTPUT CONTACT J20 This connector is directly tied to the contact normally open of a power relay which activates every time the...

Page 21: ...emote control unit directly at the air conditioner receiver System starts and runs for 3 minutes After 3 minutes operation in case the setting is right the unit switches to COOL mode and stops set poi...

Page 22: ...er is being supplied WARNING If the following troubleshooting must be done with power supplied be careful not to touch any uninsulated live part that can cause electric shock 7 2 CIRCUIT BREAKER TRIPS...

Page 23: ...e YES Is the unit in protection mode see par 5 9 e 5 10 Wait some minutes to restore normal condition YES NO CASE 1 CASE 2 There is a fault signaling Check outdoor unit leds signaling see par 5 17 Nor...

Page 24: ...he sensor COMMUNICATION ERROR Is the communication fuse blown Replace fuse 100mA The fuse may be not fitted rightly in the fuseholder Check for right connection of communication wires Check outdoor un...

Page 25: ...7 4 OUTDOOR UNIT DOES NOT RUN AND NO FAULT IS DISPLAYED 7 5 ONLY OUTDOOR UNIT IS OFF 25...

Page 26: ...he fuse may be not fitted rightly in the fuseholder Check for right connection of communication wires Turn off power supply and after 3 minutes turn on again NO See section 7 3 FAULT ON THE INDOOR UNI...

Page 27: ...air filters Check the air filters Are they clogged YES NO Check the expansion valve coil Is it rightly connected and the resistance value correct Replace the expansion valve coil NO There is the possi...

Page 28: ...ES ARE OBSERVED 2 OPERATION DOES NOT SWITCH FROM HEAT TO COOL AND FROM COOL TO HEAT Remote controller unit may be defective Receiver assy may be defective Check the connection of reversing valve coil...

Page 29: ...7 8 NOISE PROBLEM 29...

Page 30: ...isired electric part from terminal plate PCB assy capacitor etc Similary disconnect the connector Then measure the insulation resistance fig 1 to 4 Refer to electric wiring diagram NOTE If the probe c...

Page 31: ...0 8180 590 00 04 2010 R D 28 Reyrieux BP 131 01601 Tr voux CEDEX France T l 04 74 00 92 92 Fax 04 74 00 42 00 R C S Bourg en Bresse B 759 200 728 31...

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