AEG-Electrolux EXP12EL1WI, EXP09CL1WI User Manual

Website: www.mideaaircon.com

Service manual

CAUTION

-BEFORE SERVICING THE UNIT, READ THE SAFETY

-PRECAUTIONS IN THIS MANUAL.

-ONLY FOR AUTHORIZED SERVICE PERSONNEL.

MODELS: MPK-09CEN2	MPK-09CRN2	MPK-09EEN2
MPK-10CEN2	MPK-10CRN2	MPK-10EEN2
MPK-12CEN2	MPK-12CRN2	MPK-12EEN2
MPK-08CE	MPK-08CR	MPK-08EE
MPK-09CE	MPK-09CR	MPK-09EE
MPK-10CE	MPK-10CR	MPK-10EE
MPK2-09CEN1-QB6 MPK2-09CRN1-QB6 MPK2-09EEN1-QB6
MPK2-10CEN1-QB6 MPK2-10CRN1-QB6 MPK2-10EEN1-QB6
MPK2-12CEN1-QB4	MPK2-12CRN1-QB4	MPK2-12EEN1-QB4

MPK-09ERN2

MPK-10ERN2

MPK-12ERN2 MPK-08ER MPK-09ER MPK-10ER MPK2-09ERN1-QB6 MPK2-10ERN1-QB6 MPK2-12ERN1-QB4

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GD Midea Refrigeration Equipment Co. Ltd		Service manual for K portable Series
	CONTENTS
1. PREFACE
1.1 SAFETY PRECAUTIONS............................................................................................................................		1
1.2 INSULATION RESISTANCE TEST............................................................................................................		1
1.3	FEATURES.................................................................................................................................................	1
1.4 CONTROL LOCATIONS..............................................................................................................................		2
2. TROUBLE SHOOTING GUIDE
2.1 REFRIGERATION CYCLE DIAGRAM........................................................................................................		3
2.2	ELECTRIC FUNCTION…..........................................................................................................................3
2.3	TROUBLE SHOOTING GUIDE.................................................................................................................	5
3. WIRING DIAGRAM
3.1 WIRING DIAGRAM FOR COOLING ONLY MODELS................................................................................		8
3.2 WIRING DIAGRAM FOR COOLING AND HEATING MODELS..................................................................		8

3.3ELECTRICAL CONTROL SCHEME……………………...............................................................................9

3.4MAIN CONTROL BOARD SCHEME…………………................................................................................10

3.5DISPLAY BOARD SCHEME…………………………..................................................................................11 4. HOW TO DISASSEMBLE THE UNIT…………………………………………………………………………….12

5. EXPLODED VIEWS…………………………………………...........................................................................19

6. SPARE PARTS LIST…………..………………………………………..…………………………………..……..19

7. SPECIFICATIONS.......................................................................................................................................

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1. PREFACE

This SERVICE MANUAL provides various servicing information, including the mechanical and electrical parts, etc. This room air conditioner was manufactured and assembled under a strict quality control system.

The refrigerant was charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

1.1 SAFETY PRECAUTIONS

1.When servicing the unit, set the POWER SWITCH to OFF and unplug the power cord.

2.Inspect the service cord for damage or wear.

If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 3. After servicing the unit, make an insulation resistance test to protect the customer from being exposed to

shock hazards.

1.2 INSULATION RESISTANCE TEST
1.	Unplug the power cord and connect a jumper lead between the two (2) live pins.
2.	The grounding conductor (yellow/green) is to be open.
3.	Measure the resistance value with an ohm meter between the jumped lead and each exposed metallic part
	on the equipment at all the positions (except OFF) of the ROTARY SWITCH or POWER SWITCH.
4.	The value should be over 1MΩ.
1.3 FEATURES
	Water full alarm	Restart relay protection for the compressor.
	Anti-icing function at cooling mode.	Temperature sensor err self-diagnose.

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GD Midea Refrigeration Equipment Co. Ltd

Service manual for K portable Series

24 hours on/off mode time setting. Both temperature mode display

Separate motor for indoor and outdoor system. Multiple uses: dehumidifying and cloth drying. Low temperature Drying operation.

There are four casters on the bottom for easy movement.

Only one exhaust pipe, which makes the A/C easier to use.

Remote-controlled or gentle-touch keys for easy

1.4 CONTROL LOCATIONS

For cooling only with electric heater models:

For cooling only models:

Remote receiver.

Timer ON button. Push this button to set the Timer On time.

and comfortable use.

Compressors of famous brands are adopted for reliability and low noise.

The heating system uses PTC electrical heater and will not be affected by ambient temperature, which saves energy.

Suitable for local cooling and heating. Condenser shower and large volume tank design. Long time to pour the tank.

Directly drainage available.

Timer OFF button. Push this button to set the Timer Off time.

Timer ON/OFF lamp.

oF Fahrenheit temperature display. When Fahrenheit temperature display mode is selected.

oC Celsius temperature display. When Celsius temperature display mode is selected.

Temperature setting up. Push this button to set temperature setting up.

Temperature setting down. Push this button to set temperature setting down.

Cooling operation lamp.

Drying operation lamp.

Fan only operation lamp.

Electric heating operation lamp.

Mode setting button. Push this button to select the operation mode: Cool, Dry, Fan only and Heat

High fan speed lamp.

Med fan speed lamp.

Low fan speed lamp.

Fan speed setting button. Push this button to select fan speed: High, Med and Low.

Power button. Push this button to start the unit.

Water full alarm lamp Power lamp

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GD Midea Refrigeration Equipment Co. Ltd

Service manual for K portable Series

Remote controller:

LCD display.

Mode button: Select the operation mode, AUTO, COOL, DRY, HEAT (cooling only with electric heater models only) and FAN.

Fan speed button: Select the Fan speed, AUTO, LOW, MED, HIGH.

ON/OFF button: Press this button to operation the unit, again to stop.

Temperature setting up button: Press this button to increase temperature setting or adjust the TIMER in a clockwise direction.

Temperature setting down button: Press this button to decrease temperature setting or adjust the TIMER in a counter-clockwise direction.

Timer on button: Push this button to set the ON timer.

Timer off button: Push this button to set the OFF timer.

Lock button: Press this button to lock all button except this button.

Reset button: Press this button to reset all settings to factory settings.

2 TROUBLESHOOTING GUIDE

2.1 REFRIGERATION CYCLE DIAGRAM

2.2 ELECTRICAL FUNCTION

2.2.1 Electric Control working environment

2.2.1.1Input voltage: 187~264V for 50Hz models and 97~127V for 60Hz models;

2.2.1.2Input power frequency: 50Hz or 60Hz;

2.2.1.3Ambient temperature: -7°C~+43°C for cooling only with electric heater models and

10°C~+43°C for cooling only models;

2.2.1.4Indoor fan normal working amp is less than 1A;

2.2.1.5Outdoor fan. Normal working amp is less than 1.5A;

2.2.1.6Compressor: single-phase power supply.

Its normal working amp is less than 10A;

2.2.2Proper symbols and their meanings: TA: Indoor ambient temperature

TC: Indoor evaporator temperature

TS: Setting temperature through the remote controller

2.2.3Systematic functions

Remote receiving (Optional)

LED displaying and alarm

On or off Timer

Protection for the compressor

Water full alarm

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GD Midea Refrigeration Equipment Co. Ltd

Service manual for K portable Series

Anti-icing function at cooling mode. Temperature sensor err self-diagnose. Both temperature mode display

2.2.4Protection

2.2.4.1The compressor functions protection with a delay of three minutes.

2.2.4.2Sensor protection at open or short circuit.

2.2.4.3Evaporator anti-icing protection at cooling mode.

2.2.4.4Water full alarm

There are two water position switches used in the unit. One detects the water depth in the chassis and the other detects the water in the tank.

2.2.4.4.1Water full alarm will be on when the unit is standing by or operating.

2.2.4.4.2When the water adds up to the first position on the chassis, the pump will be activated. If the water drops down through the position, the pump will be on and stop after 2 minutes.

2.2.4.4.3When the water adds up to the position on the tank, the compressor, outdoor fan motor, electric heater and pump will stop operation. And the LED will display “P1” while the water full lamp flashes at 2Hz.

2.2.4.4.4When the water adds up to the second position on the chassis and the switch has been on for 10 seconds, the whole unit will stop operation. The LED will display “P2” and the water full lamp will flash at 5Hz. After you have clear the problem, you should unplug the unit and plug again. Then the unit will be ready to operate.

2.2.4.4.5When the unit is standing by, if the unit displays “P1”, the pump will not operate. After the problem is cleared, the unit will be ready to operate. But if you push the power button, the unit will shut the “P1” display and shut down.

2.2.5Fan-only Mode Function Requirement 2.2.5.1 The compressor and outdoor fan are OFF

at Fan-only mode.

2.2.5.2 The speed of indoor fan can be optionally chosen as High/Mid/Low.

2.2.6Cooling Mode Function Requirement

2.2.6.1The speed of indoor fan can be optionally selected as High/Mid/Low.

2.2.6.2The compressor operate as:

OC ro om tem per ature (TA)

	Comp ressor ON
TS+1
TS		Temp up
	Co mpressor OFF
	Temp down

2.2.7 Drying mode

2.2.7.1 When the unit starts to operate in Drying mode, the compressor will start while the room temperature is over 13oC. After the compressor started, the compressor will operate as:

OC ro om tem per ature (TA)

	Comp ressor and outd o or
15 oC	fan ON
13 oC	Co mpressor and	Temp up
	ou tdoor fan OFF
	Temp down

2.2.7.2 The indoor fan will operate with high speed. The outdoor fan will operate with compressor.

2.2.8 Heating mode

2.2.8.1The speed of indoor fan can be optionally chosen as High/Mid/Low.

2.2.8.2Electric heater operate as :

OC ro om tem per ature (TA)

	Electric h eater OFF
TS+1
TS		Temp up
	El ectric h eater ON
	Temp down

2.2.9 Temperature display

2.2.9.1The setting temperature will be displayed in Cooling and Heating mode. The room temperature will be displayed in Drying and Fan only mode.

2.2.9.2The setting temperature range is from 17oC to 30oC or 62oF to 88oF. The display temperature range is from 10oC to 35oC or 48oF to 98oF. If the room temperature is lower than 10oC or 48oF, the display will be 10oC or 48oF.

2.2.10 Timer Function

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GD Midea Refrigeration Equipment Co. Ltd

Service manual for K portable Series

2.2.10.1The maximum length of Timer is 24 hours and the minimum is 0.5 hours.

2.2.10.2TIMER ON function: first turn OFF the unit, the unit will be automatically ON at the set time.

2.2.10.3TIMER OFF function: first turn ON the unit, the unit will be automatically OFF at the set time.

2.2.10.4TIMER ON/OFF function (ON TIMER is earlier than OFF TIMER): first turn OFF the unit, it will be automatically ON at set time, and later be OFF at the set time.

2.3 TROUBLESHOOTING GUIDE

2.2.10.5TIMER OFF/ON function (OFF TIMER is earlier than ON TIMER): first turn ON the unit, it will be automatically OFF at set time, and later be ON at the set time.

2.2.10.6Timer function execution is applicable upon one operation only.

2.2.10.7Timer precision is less than 15 minutes. 2.2.11 Auto restart function

In case of a sudden power failure, this function automatically sets the unit to previous settings before the power failure when power returns.

In general, possible trouble is classified in three kinds. One is called Starting Failure which is caused from an electrical defect, another is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application, and the other is called the Structure Damage.

ROOM AIRCONDITIONER VOLTAGE LIMITS:

	NAMEPLATE RATING				MINIMUM			MAXIMUM
	220~240V					196V		253V
	115V					103V		122V
	PROBLEM		POSSIBLE CAUSE					REMEDY
			Power failure				Check the power supplier if the power supplier is supplied to the
	No power display						unit. Check the power cord and correct if damaged.
	on panel or any one		Transformer (Discharge				Check resistance between the two input/output lines on
	of the buttons						transformer. Replace the transformer if either of the input/output
			transformer before testing)
	failure.						is open or the transformer is damaged.
			Display board or main PCB				Check the voltage on display board. Replace the display board if
			failure				it is +5V else replace the main PCB.
	Remote control
	failure.
			Battery failure				Check the voltage of battery. Replace batteries if the voltage is
							lower than 2.3V.
							Check voltage. Call an electrician if not within limits.
							Test capacitor.
	Fan motor runs						Replace if not within +/-10% of manufacture's rating.
			Cycles on overload.
							Check bearings. Replace the motor if the blower wheel cannot
	intermittently
							rotate freely.
							Pay attention to any change from high speed to low speed.
							Replace the motor if the speed does not change.
							The amount of the refrigerant is too much, making the
	Compressor stops		Refrigerant				compressor load too big. Recycle and recharge the refrigerant
	instantly after						after checking for the reason.
	startup.
			Compressor				The compressor is blocked inside. Replace after checking for the
							reason.

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	GD Midea Refrigeration Equipment Co. Ltd		Service manual for K portable Series
		No power	Check voltage at electrical outlet. Correct if none.
		Water alarm	Check and correct if water alarm happens.
		Power supply cord	Check voltage at the power cord terminal on Main PCB. Replace
			the power cord if none.
		Transformer (Discharge	Check resistance between the two input/output lines on
			transformer. Replace the transformer if either of the input/output
		transformer before testing)
			is open or the transformer is damaged.
	Fan motor will not	Wire disconnected or	Connect wire. Refer to wiring diagram for terminal identification.
		connection loose	Repair or replace loose terminal.
	run.
		Main PCB failure	Select fan speed and Check the voltage on main PCB. Replace
			the main PCB if no voltage in anyone.
		Capacitor (Discharge	Test capacitor.
			Replace if not within +/-10% of manufacture's rating. Replace if
		capacitor before testing)
			shorted, open or damaged.
			Fan blower hitting scroll. Realign assembly.
		Will not rotate	Check fan motor bearings. Replace the motor if motor shaft do
			not rotate.
		Fan blower	Replace the fan blower if cracked, out of balance, or partially
			missing.
	Fan motor noise.	Loose screws	Tighten them.
			Replace the motor if knocking sounds continue when running or
		Worn bearings	loose, or the motor hums or noise appears to be internal while
			running.
		Voltage	Check voltage. Call Supply Authority if not within limits.
			Check the wire connections, if loose, repair or replace the
		Wiring	terminal. If wires are off, refer to wiring diagram for identification,
			and replace. Check wire locations. If not per wiring diagram,
			correct.
	Compressor will not	Main PCB failure	Check voltage of main PCB. Replace the main PCB if open.
	run while fan motor
		Capacitor (Discharge	Check the capacitor.
	runs.		Replace if not within +/-10% of manufacturers rating. Replace if
		capacitor before testing)
			shorted, open, or damaged.
		Room temp sensor	Check the temperature setting if not at the coolest (in cooling
			mode) or the warmest (in heating mode). Set it if not.
		Compressor	Check the compressor for open circuit or ground. If open or
			grounded, replace the compressor.
	Excessive noise.	Copper tubing	Remove the cabinet and carefully rearrange tubing not to contact
			cabinet, compressor, shroud and barrier.
		Water tank full	Check and pour if the water tank is full.
		Water depth sensor if failure	Check and replace if failure.
		Water pump failure	Check and replace if the pump if failure.
	Water full alarm
		Water depth is over load in	Check and drainage the water in the chassis by open the
		chassis	drainage hose on the chassis.
		Water depth sensing	Check and replace or realign if the structure is failure.
		structure

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