Samsung RM255 series Troubleshooting Manual

Models Covered:
RM255****
4 Door Refrigeration
Self Diagnosis: Press both buttons (Freezer–
Fridge) simultaneously (No sound when both
buttons are pressed at the same time) 'til the
display quits blinking and beeps, 8-12 sec-
onds, then release and read Fault Codes.
This will also cancel the Fault Mode created
by self-diagnosis at power up.
Forced Mode: Press both buttons (Freezer–
Fresh Select Zone) simultaneously (No
sound when both buttons are pressed at
the same time) 'til it beeps and goes blank,
8-12 seconds
Wait 5 seconds between button pushes
Press Freezer button one
time at the Test Mode to
Force Compressor Run,
measure fan and com-
pressor voltages at PCB
Interior Temperature of the freezer will be set to -14 degrees Fahrenheit until the ice bucket is full. When the ice
bucket is full, the freezer will maintain original set temperature. Also, whenever the ice is used, the freezer will
again set to -14 degrees Fahrenheit. Selecting "Ice Off" will allow the freezer to be controlled by the set tem-
perature. If water is not hooked up, the freezer will always be at –14 unless "Ice Off" is selected.
1. Compressor → Sub-condenser → Hot Pipe → Back Clus-
ter Pipe → Dryer → R Capillary Tube → Refrigerator Evapo-
rator /CR Evaporator→ Connected Capillary → Freezer
Evaporator/CF Evaporator → Suction Pipe → Compressor
2. Compressor → Sub-condenser → Hot Pipe → Back Clus-
ter Pipe → Dryer →F Capillary Tube → Freezer Evaporator/
CF Evaporator → Suction Pipe → Compressor
Publication # tsRM255 Creation Date 08/24//2009
IMPORTANT SAFETY NOTICE – "For Technicians Only" This service data sheet is
intended for use by persons having electrical, electronic, and mechanical experience
and knowledge at a level generally considered acceptable in the appliance repair trade.
Any attempt to repair a major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible, nor assume any liability for
injury or damage of any kind arising from the use of this data sheet.
Press Freezer button a
second time to Force
Defrost of Fridge, meas-
ure defrost voltage at
main PCB
FREEZER TEMPERATURE CONTROL BY THE ICE MAKER
Sealed System
Refrigerant
Charge
R134a
7.76 oz
Fast Track Troubleshooting
Press Freezer button a
third time to Force Defrost
for Fridge & Freezer,
measure defrost voltages
at main PCB
Component Value Chart
Component
Freezer Defrost Heater
Fridge Defrost Heater
CF Defrost Heater
CR Defrost Heater
F Drain Tube/Heater
R Drain Tube/Heater
Dispenser Heater
Water Tank Heater
Fill Tube Heater
Sensors
Fans
Sales Mode, No Compres-
sor Operation: Press
Freezer & Arctic Select
Zone buttons simultane-
ously for 3 sec ( you will
hear a "Ding Dong") to re-
move or put into Sales
Mode. When in the Sales
Mode the Display will show
"OF" "OF"
Removing power will not
cancel this mode.
Resistance Wattage Voltage
72Ω 200
180Ω 80
144Ω 100
180Ω 80
2880Ω 5
2880Ω 5
2880Ω 5
29Ω 5
29Ω 5
2.5kΩ-89kΩ N/A 1~4.5vdc
N/A N/A 7~12vdc
120vac
120vac
120vac
120vac
120vac
120vac
120vac
12vdc
12vdc
1