Friedrich MR12C1H, MW12C1H, MW09C1H, MR09C1H manual Is not on, then replace the protector

Page 47

Troubleshooting

The fan does not run when it is set to supply air.

The indoor fan motor is burned or bre- aks or has the heat protector malfun- ction.

The built-in heat protector of the motor breaks frequently because the motor is abnormal.

Wrong connection

The fan capacitor has open circuit or is damaged

Replace the fan motor or the defective part.

Replace the fan motor

Make the correction connection based on the circuit drawing.

Replace the fan capacitor of the same type and same specification.

 

 

 

 

The outdoor fan motor is damaged.

 

 

Replace the fan motor

 

 

 

 

 

 

 

 

 

 

In the cooling and

 

 

 

 

 

 

 

 

heating mode, the

 

 

 

Wrong connection

 

 

Make the correct connection based on the circuit

compressor runs,

 

 

 

 

 

drawing.

 

 

 

 

 

 

but the outdoor

 

 

 

 

 

 

 

 

fan does not run.

 

 

 

 

 

 

Replace the fan capacitor

 

 

 

 

 

The outdoor fan capacitor is damaged.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Malfunction of compressor

Replace the compressor

When cooling or heating, outdoor fanruns,compr- essor doesn't run.

 

Breakage of running capacitor of

 

 

Replace the capacitor

 

compressor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The voltage is too low or too high.

 

 

Manostat is recommended.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wrong wire connection

 

 

Connect the circuit diagram correctly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The protector itself has malfunction.

 

 

Use the multimeter to check whether the contact of

 

 

 

 

the compressor is on when it is not overheated. If it

 

 

 

 

 

 

 

 

 

 

is not on, then replace the protector

 

 

 

 

 

 

 

 

 

 

 

 

The compressor is too hot and leads to the action of the protector.

The swing fan

DOES not run.

 

The refrigerant is not enough or is too

 

 

 

 

 

Adjust the volume of the refrigerant

 

 

much.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The capillary is blocked and the temp-

 

 

 

 

 

Replace the capillary

 

 

erature rises.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The compressor does not run smoothly

 

 

 

 

 

Replace the compressor

 

 

or is stuck. The air discharge valve is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

damaged

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The protector itself has malfunction.

 

 

 

 

Replace the protector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The torque of the swing motor is not

 

 

 

 

 

 

enough

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First, check whether the connection is wrong. If no,

 

wrong connection

 

 

 

 

 

 

 

 

 

 

 

replace the parts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The controller is damaged IC2003 is

 

 

 

 

 

 

 

 

damaged, the swing relay can not close,

 

 

 

 

 

 

 

etc

 

 

 

 

 

 

 

 

 

 

 

 

 

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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 Date Electrical wiringCooling Models TOP View Bottom View Bottom View Function and Control Remote Control OperationsAuto 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 Compressor Protection Function Detection of temperature sensor malfunctionFrequency Control 3-minutes StandbyFreeze-up Protection Control Discharge Pipe ControlInput Current Control Detail Conditions for Start Controlling Tap Control in indoor/outdoor unit silent operation Fan ControlImportant Notices Ground requirements Installation dimension diagram Boring Piping Hole Installing Indoor Unit Installing Outdoor Unit Electric wiringCheck after Installation and Operation Test Check after InstallationInstallation of Healthy Filter Installation and Maintenance of Healthy FilterOptionalTroubleshooting 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 Way Valve Liquid Side 2-way, 3-way Valve AppearanceProcedure Close Close Open Close Balance Refrigerant of the 3-way Valve Evacuation ProcedureAfter Evacuation Gas ChargingRemoval 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