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Fast Track Troubleshooting 

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. 

Models Covered:  

RM255**** 

4 Door Refrigeration

 

Wait 5 seconds between button pushes

 

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 

 

Publication #  tsRM255 Creation Date 08/24//2009

 

Component Value Chart 

Component

Resistance Wattage Voltage

Freezer Defrost Heater

72

200

120vac

Fridge Defrost Heater

180

80

120vac

CF Defrost Heater

144

100

120vac

CR Defrost Heater

180

80

120vac

F Drain Tube/Heater

2880

5

120vac

R Drain Tube/Heater

2880

5

120vac

Dispenser Heater

2880

5

120vac

Water Tank Heater

29

5

12vdc

Fill Tube Heater

29

5

12vdc

Sensors

2.5k

-89k

N/A

1~4.5vdc

Fans

N/A

N/A

7~12vdc

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 

Press Freezer button one 
time at the Test Mode to 
Force Compressor Run, 
measure fan and  com-
pressor voltages at PCB 

Press Freezer button a 
second time to Force 
Defrost of Fridge, meas-
ure defrost voltage  at 
main PCB 

Press Freezer button a 
third time to Force Defrost 
for Fridge & Freezer, 
measure defrost voltages  
at main  PCB 

Refrigerant      

Charge                     

R134a                        

7.76 oz

 

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.

 

Sealed System 

                                                 FREEZER TEMPERATURE CONTROL BY THE ICE MAKER    

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

Содержание RM255 series

Страница 1: ... Heater 2880Ω 5 120vac Water Tank Heater 29Ω 5 12vdc Fill Tube Heater 29Ω 5 12vdc Sensors 2 5kΩ 89kΩ N A 1 4 5vdc Fans N A N A 7 12vdc 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 Capillar...

Страница 2: ...ice then defrost and check the motor again after removing power from the unit If the evaporator is ice blocked and thus blocking the air flow the fan will over RPM and it is stopped Remove ice and check the motor again If everything is clear around the fan blade then the motor would be at fault Continuous fan errors will be displayed on the front panel display PLEASE NOTE The door switches control...

Страница 3: ...or CF Compartment defrosting heater open or short circuit connector failure or defective temperature fuse bi metal Defrost on for over 80 minutes Disconnect heater connector from PCB check resistance WATER TANK HEATER ERROR Error is displayed when the water reservoir tank heater is open or shorted Disconnect heater connector from PCB check resistance EXT SENSOR Ambient Temp Sensor Error open or sh...

Страница 4: ...sw 6 vdc GND CN76 1 11 12 VDC Blk S Blu 1 2 CF Fan Mtr Blk Brn 7 1 3 CF Fan FG Red 1 4 Ice Pipe Heater Blk Org 11 5 CR Fan Mtr S Blu Yel 6 CR Fan FG Pnk 11 10 H2O Tank Htr S Blu W CN73 120vac 1 CN70 9 Cube Mtr Yel Red 3 CN70 9 Auger Mtr Pnk Red 5 CN70 9 Water Solenoid Valve W Blk Red 7 CN70 9 Ice Solenoid Valve Prp Red CN72 120vac 1 CN70 9 CR Room Lt Wht Red 3 CN70 9 CF Room Lt Brn Red 5 CN70 9 R ...

Страница 5: ...Ice Maker Water Filter Water Tank SMPS Main PCB Push up sharply to loosen Swing bezel away from RM255 ...

Страница 6: ...Service Access Disassembly of Quatro Cool Evaporator Covers both access the same way ...

Страница 7: ...Accessing the Refrigerator Evaporators Pull cover up and out far enough Water Tank Heater Connector Fresh Food Convertible Section Failure of the Drain Hose Hea could cause water build up o ...

Страница 8: ...Remove 4 screws Snap off caps Accessing Freezer Evaporator Snap off cover Unplug wire ha Failure of the Defrost Drain Hose Heater could cause ice build up on freezer floor and cooling issues in Freezer ...

Страница 9: ...RM255 9 ...

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