GE Profile J2S968 SERIES Technical Service Manual

Also see for Profile J2S968 SERIES: Owner's manual Installation instructions Dimensions and installation information Owner's manual Owner's manual

Contents

– 51 –Failure CodesThe oven may stop operating but not give an F code on the display immediately. F codes are stored innonvolatile EEPROM memory until the same fault occurs twice consecutively. After that, the F code willbe displayed. F codes can be recalled by pressing together TIMER, CLOCK, MIN DOWN or 9. While Fcodes are displayed, pressing MIN UP or 8 and HR DOWN or 6 together will clear them. A fault mustexist continuously for 5 minutes before an F code is recorded (F2 and F8 are sooner).Diagnostics and Service InformationFAILURECODE MEANING CORRECTIONShorted OFF key-F0- Determine if problem is with key panel or control bydisconnecting ribbon cable and measuring flat cablepins 13 to 14. Should be open. Should be 100–150ohms while pressing OFF key.Over temperature1. Inside oven cavity asmeasured by sensorover 650°F unlatchedor 915°F latched or2. Cooling fan stalls whileoven above 650°F—open thermal switch inyellow leads• Welded relay contacts• Cooling fan stalled or blocked• Airflow to rear of unit• High resistance in oven sensor leads/connectors(especially at sensor in rear)-F3- Open oven sensor (under950 ohms)• Disconnect power. Disconnect sensor harness fromcontrol. Measure sensor resistance (white leads) tobe ~1080 ohms at room temperature with 2 ohmsper degree change.• Look for damaged harness terminals if not a badsensor.Shorted oven sensor(over 2900 ohms)• Disconnect power. Disconnect sensor harness fromcontrol. Measure sensor resistance (white leads) tobe ~1080 ohms at room temperature with 2 ohmsper degree change.• Separate sensor from harness to determine fault.Shorted matrix or STARTkeyDetermine if problem is with key panel or control bydisconnecting ribbon cable and measuring flat cableusing pinout chart. Allow up to 1000 ohms whenpressing a key.-F2--F4--F7-EEPROM data shift failure If repeated, replace control.Cooling fan or airflow to control area.Cooling fan stalls whileabove 650°F; openthermal switch in yellowleads-F8--F9-Loss of latch motor safetycircuitReplace control.-FF-