Samsung AD26B1C13, UD26B1C2, UD18B1C2, AD18B1C09 When the fan of indoor unit does not operate

Page 15

3-3-4 When the fan of indoor unit does not operate

1)Inspection items

(1)Is the power voltage normal?

(2)Is the connector of indoor fan with the good contact? (CN73)

(3)Is the soldering status of running condenser (CR71) with the good contact?

(4)Is connector of the Hall IC with the good contact (CN 43) ?

(5)Is the indoor fan rotating when it is under operation mode?

(6)Is the FAN LED (green) flickering when the indoor fan stalled (for more than 15 seconds) and the trouble condition of speed detecting part?

Error occurs after the

indoor unit fan motor is rotating for 15 seconds?

(FAN Lamp flickering)

YES

Replacement of

indoor unit fan motor.

Put the power off and put it on after 5 seconds.

 

 

 

 

 

YES

 

 

 

 

Is the operation lamp flickering for 3 minutes and

NO

 

 

 

 

 

 

 

then put off?

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

YES

If the operation /stop button of the remote controller

NO

 

 

 

is pressed, is the operation lamp flickering and then is

 

 

 

 

 

 

 

 

 

 

 

 

the indoor fan rotating after 5~6 seconds?

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

Is AC 120V and higher shown across the indoor fan

 

 

 

 

 

 

 

 

connector (CN73) ?

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

NO

Is the type of MICOM (IC 04) Pin no.

 

 

 

 

63 old type ?

 

 

 

 

 

 

 

 

 

 

 

120Hz

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

Is the pin no. 12 of IC 06 (KID 65003)

NO

 

 

 

the old type?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

120Hz

 

 

 

 

If the power is not available (indoor unit), item no 3-3-1.

Replace of indoor unit PCB Ass'y.

Replace the IC 06 (KID 65003)

and SS71(G3MB202pl).

YES

Is the pin no 25 of MICOM the old type?

NO

Replace Q401 (Ksc 945Y).

Replace the indoor unit PCB Ass'y due to the

Micom defect.

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Contents Room AIR Conditioner Refrigerant Refill Procedure InstallationPump down Procedure Indoor Unit Disassembly and ReassemblyDo 1above Outdoor Unit Items to be checked first TroubleshootingDisplay Self Diagnosis Standard Outdoor Unit Checking and Testing Operations Outdoor UnitIf the lamp is not flickering, check as follows Display Explanation Remark No Power completely dead-Initial diagnosis Fault Diagnosis by SymptomIndoor unit on when When the power voltage is not availableIs the display of PCB shown No Power Outdoor unitWhen the fan of indoor unit does not operate When the outdoor unit fan does not operate Is operating lamp blinking? LCD display status of Remocon normal? When the 4 way valve A,B is not operating Normal comp a B off Keep Comp a B off When the compressor does not operateMethod for Setting up the model option with remocon Set up the Model optionCase of ex -1700b7 Table of the option code Memo Exploded Views and Parts List Parts List 1 UD26B1C2 UD26B1C2 2 UD18B1C2 ’TY ASS’Y Control in DB93-01223A Description Specification RemarkRefrigerating Cycle Block Diagram Indoor Unit Outdoor Unit Schematic Diagrams Outdoor Unit Electronics
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