Friedrich MW12C1H, MW09C1H, MR09C1H, MR12C1H manual Evacuation, Procedure

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Troubleshooting

Evacuation

(All amount of refrigerant leaked)

Indoor unit	Liquid side
Indoor unit
		Outdoor unit
	3-Way
	valve	Open
		Open
	Gas side
	3-Way
	valve	Open
Vacuum pump
	Lo
OPEN	CLOSE

• Procedure

(1)Connect the vacuum pump to the center hose of charge set center hose

(2)Evacuation for approximately one hour.

–Confirm that the gauge needle has moved toward -76 cmHg (vacuum of 4 mmHg or less).

(3)Close the valve (Lo side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move (approxima- tely 5 minutes after turning off the vacuum pump).

(4)Disconnect the charge hose from the vacuum pump.

–Vacuum pump oil.

If the vacuum pump oil becomes dirty or depleted, replenish as needed.

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Contents Split Type Room AIR Conditioner Wall Mounted Type Table of Contents Model and product code Summary and features Important Safety Information Refrigeration System Repair Hazards Property Damage Hazards Specifications 115 MR09C1H MR12C1H Appending date Expanded capacity data tables for both cooling and heating Operation Characteristic Curve 09KUnits Construction Views Refrigerant System Diagram Electrical wiring Electrical DateCooling Models TOP View Bottom View Bottom View Remote Control Operations Function and ControlAuto Timer on Displayed. If the light is tunrned off Disappears Replacement of Batteries Description of Each Control Operation Function and Control Function and Control Setting+ 2, medium speed Tring ≤ Tsetting 2, low speed P2 Maximum cooling and heating Detection of temperature sensor malfunction Frequency Control3-minutes Standby Compressor Protection FunctionDischarge Pipe Control Input Current ControlFreeze-up Protection Control Detail Conditions for Start Controlling Fan Control Tap Control in indoor/outdoor unit silent operationImportant Notices Ground requirements Installation dimension diagram Boring Piping Hole Installing Indoor Unit Electric wiring Installing Outdoor UnitCheck after Installation Check after Installation and Operation TestInstallation and Maintenance of Healthy FilterOptional Installation of Healthy FilterTroubleshooting Can not start up Malfunction of four-way valve Is not on, then replace the protector Adjust support washer of compressor, Troubleshooting YELLOW-LED4 GREEN-LED2 RED-LED3 Analysis or processing of some of the malfunction display How to Check simply the main part Troubleshooting Comp Page AP1 Troubleshooting Is stop time of the compressor longer than 3 minutes? Minutes after the complete unit is powered off Start If the fault is eliminated? Troubleshooting Flow chart for outdoor communitcation circuit detecting Troubleshooting Guide Troubleshooting Guide Temp Resistance 2-way, 3-way Valve Appearance Way Valve Liquid SideProcedure Close Close Open Close Balance Refrigerant of the 3-way Valve Procedure EvacuationGas Charging After EvacuationRemoval Procedure Removal Procedure Removal Procedure Removal Procedure of Outdoor Unit Removal Procedure Removal Procedure MW09C1H / MW12C1H Exploded Diagram MW09C1H Parts List MW12C1H Parts List MR09C1H Exploded Diagram MR09C1H Parts List MR12C1H Exploded View MR12C1H Parts List Page Friedrich AIR Conditioning CO