Norcold 1200 series Service Manual

Also see for 120-IM series: Service manual

Contents

Norcold 1200 series Service Manual Manual pdf 2 page image

iRefrigerator Service Manual www.norcold.com/cda 1200XX/120X-IMXX ModelsTABLE OF CONTENTSIntroduction ------------------------------------------------------ 1About this Manual ................................................................. 1Model Identification .............................................................. 1Information Label ................................................................. 1Cooling Unit Serial Number ................................................ 1Certification and Code Requirements ................................ 1About Installation ................................................................. 1Replacement Parts .............................................................. 1Technical Assistance ........................................................... 1Safety Awareness ---------------------------------------------- 3Safety Notice ......................................................................... 3Attention Statements ............................................................ 3Safety Statements ................................................................ 3Specifications --------------------------------------------------- 41200XX/120X-IMXX Models .................................................. 4Troubleshooting – Quick Reference Guide ------------ 5Displayed Fault Codesr -------------------------------------- 6Troubleshooting Flowcharts -------------------------------- 8Blank Display – Refrigerator does not turn on .................... 8no LP - no FL Fault Code – Burner failed to ignite orreignite .................................................................................. 9dc LO Fault Code – Low dc voltage ................................... 10Sr FS - Sr Fault Code – Flame sense circuit failure ......... 10dc HI Fault Code – DC voltage high .................................. 11Sr CL - AC rE Fault Code – AC relay stuck closed ............ 11no AC Fault Code – No AC power available ...................... 12AC LO Fault Code – AC voltage low .................................. 13AC HI Fault Code – AC voltage high .................................. 13AC HE Fault Code – AC heater failed open ...................... 14Food Compartment Lamp Switch ..................................... 15Lamp Switch Operation .................................................... 15dr Fault Code – Door open for more than 2 minutes ....... 15Lamp Switch Testing Procedure ...................................... 15Thermistor Failure Fault – Controls in Backup OperatingSystem mode ..................................................................... 16Backup Operating System (BOS) ...................................... 161200XX/120X-IMXX Backup Operation .......................... 16Power Board Resetting Procedure ................................... 17no co Fault Code – No cooling detected by the controls - S/N 832171 and higher ......................................................... 17Ventilation ------------------------------------------------------- 18Roof Exhaust Venting ......................................................... 18Air Intake Vent ..................................................................... 18Roof Exhaust Vent .............................................................. 18Baffles ................................................................................. 19Vertical Angled Baffles ..................................................... 19Double Sidewall Venting .................................................... 20Air Intake Vent .................................................................. 20Sidewall Exhaust Vent ...................................................... 20LP Gas System ------------------------------------------------- 23Pressure Requirements .................................................... 23Components ...................................................................... 24Testing for LP Gas Leaks .................................................. 24Solenoid Gas Valve ......................................................... 24Solenoid Gas Valve Connections .................................... 24Replacing Old Style Gas Valve ....................................... 24Orifice ................................................................................ 25Burner ............................................................................... 25Burner Tube ...................................................................... 25Flue ................................................................................... 26Flue Cap ........................................................................... 26Flue Baffle ......................................................................... 26Flame Appearance ............................................................. 26Burner Cleaning Procedure ............................................... 27Electrical Requirements and Components ----------- 28DC Voltage Requirements and Polarity ............................ 28Power Board DC Fuse ...................................................... 28DC Power Wiring Requirements ....................................... 28AC/DC Converter as Power Source .................................. 28Lamp Assembly ............................................................... 28Divider Heater .................................................................. 28AC Power Requirements ................................................... 29AC Heaters ....................................................................... 29AC Heater Circuit Fuse .................................................... 29Power Board AC Power Cord ........................................... 29Ice Maker AC Power Cord ................................................ 3012 Vdc Ventilation Fans ...................................................... 30Cooling Unit ----------------------------------------------------- 31Description ......................................................................... 31Heat Absorption ............................................................... 31Leveled Operation ............................................................ 31Gradual Decrease in Cooling Efficiency ........................... 31Cooling Performance Monitoring Control ......................... 31Units with Serial Numbers 832171 and Higher Only ..... 31Cooling Unit Monitoring Control Operation ..................... 32First "no co" Fault Code .................................................... 32Refrigerant Leakage .......................................................... 32Disposal of Cooling Unit ................................................... 32Cooling System Diagnostic Flowchart .............................. 33Removing the Refrigerator and Cooling Unit ................. 35Replacing the Cooling Unit ................................................ 35Removing Cooling Unit ................................................... 36Installation of Replacement Cooling Unit ...................... 36Reinstallation of Refrigerator into Enclosure .................. 38Electronic Components ------------------------------------- 39Power Board ....................................................................... 39Removal–Power Board .................................................... 39Installation–Power Board ................................................. 39Controls ----------------------------------------------------------- 40Optical Control Assembly ................................................... 40Replacing Optical Control Assembly .............................. 40AUTO AC Operation ......................................................... 41Modes of Operation, S/N 832170 and Lower ................... 41AUTO ................................................................................. 41AUTO LP Operation ......................................................... 41Shift from AUTO LP GAS to AUTO AC ............................. 41No AC Power and No Flame ............................................ 41Troubleshooting No Flame and No AC Faults ................ 41AC Manual Mode ................................................................ 42No AC Power or Loss of AC Power .................................. 42AC Power Restored .......................................................... 42Troubleshooting "no AC" Fault ........................................ 42LP Manual Mode ................................................................. 42Flame Fails to Ignite or Flame Goes Out ........................ 42AUTO AC Operation ......................................................... 43AUTO LP Operation ......................................................... 43Modes of Operation, S/N 832171 and Higher .................. 43AUTO ................................................................................. 43Shift from AUTO LP GAS to AUTO AC ............................. 43No AC Power and No Flame ............................................ 43Troubleshooting No Flame and No AC Faults ................ 43AC Manual Mode ................................................................ 44No AC Power or Loss of AC Power .................................. 44AC Power Restored .......................................................... 44Troubleshooting "no AC" Fault ........................................ 44LP Manual Mode ................................................................. 44Flame Fails to Ignite or Flame Goes Out ........................ 44Diagnostic Mode - S/N 832170 and Lower ------------ 45Diagnostic Mode ................................................................ 45