Samsung RF267AE**, RF267AEBP, RF26XAERS, RF26XAEPN Troubleshooting, If Water is not supplied, Start

TROUBLESHOOTING

4-2-13. If Water is not supplied

Checking method of Valve resistance (Must

power off for checking)

Resistance can be changed by input voltage.

CN70#1 (Red) CN73#5 (White-black)

- resistance value ; 388(1.6k)Ohm 7%)

** 0 : Short trouble / : Open trouble

typical PCB Ground CN1#3(Black)

Checking method of voltage

Based on PCB typical Ground CN1#3(Black) 1) Check voltage of IC73# (same voltage as

IC01#64)

- Water valve operating (about 5V 0.5V)

Based on PCB typical Ground CN1#3(Black) 2) IC73 #14 voltage

- Water valve operating (about 0.7V 0.5V)

3) Check the voltage of Water Valve operating (AC voltage)

=> For checking the Relay RY7A operating. CN70#1(Red) CN73#5(White-black)

- ICE Water valve waiting (about AC 0V)

- ICE Water valve operating (about AC 110(230)V 20%)

Start

Is the confirming sound of the valve operation heard when dispenser switch pushed?

Is the valve unit normal?

Is the voltage of PCB IC01 MICOM #15 changed 0V~5V according to switch On/Off?

Does Main PCB IC73 #3

have about 5V input?

Does Main PCB IC73 #14 have about 0.7V output?

Is the contact point of main PCB RELAY RY7A normal?

MAIN PCB normal

--Need to check the other parts Check the wire between water valve

MAIN PCB

Ice water valve itself has trouble or bad contact of connector

Check the connection hose

Check the operation between Panel PCB and MAIN PCB for Communication.

Normal(Check Ice water valve hose)

Replace Valve

1)Check the dispensing lever

2)Check switch unit/ wiring connection

3)Replace PCB

Check soldering short/Replace PCB

Check soldering short/Replace PCB

Check soldering short/Replace PCB

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