Erc Failure Codes - GE ZEK957 Series Technical Service Manual

ERC Failure Codes

The oven may stop operating but not give an F-
code on the display immediately. F-codes are
stored in nonvolatile EEPROM until 2 identical
faults occur consecutively. After that, the F-code
will be displayed. They can be recalled by pressing
Models ZEK957, JKP56, JKP45, JCKP18, and JKP18
F A I L U R E
CODE
F0
F 2
1. Inside oven cavity as measured by sensor over 650°F
unlatched or 915°F latched
2. Cooling fan stall while oven above 650°F-open thermal
switch in yellow leads.
F3
F4
F5
F7
F8 EEPROM data shift failure. If repeated, replace control.
F9
Models JKP27, JCKP15, JKP15, JCKS05, and JKS05
F A I L U R E
CODE
F0
F 2
F3
F4
F5
F7
F8
F9
CORRECTION
MEANING
Determine if problem is with Key Panel or Control by disconnecting ribbon cable and
Shorted OFF key
measuring flat cable pins 13-14. Should be open. Should be 100-150 ohms while
pressing OFF key.
Over temperature
• Disconnect power. Disconnect sensor harness from
Open oven sensor (Over
2900 ohms)
• Look for damaged harness terminals if not a bad
Shorted oven sensor (under 950 • Disconnect power. Disconnect sensor harness from
ohms)
• Separate sensor from harness to determine fault.
Sensor Circuit supervisor Failure
Replace Control.
Determine if problem is with Key Panel or Control by
Shorted matrix or START key
disconnecting ribbn cable and power up control. If no F
code problem is with key circuit.
Cooling fan stall while oven above 650°F. open
thermal switch in yellow leads
CORRECTION
MEANING
Determine if problem is with Key Panel or Control by disconnecting ribbon
Shorted OFF key
cable and measuring flat cable pins 13-14. Should be to probe side with
conductor . Should be 125-1750 ohms while pressing OFF key.
Over temperature Inside oven cav-
ity as measured by sensor over
650°F unlatched or 915°F latched.
• Disconnect power. Disconnect sensor harness from
Open oven sensor (over
3000 ohms)
• Look for damage harness terminials if not a bad
• Disconnect power. Disconnect sensor harness from
Shorted oven sensor (under 950
ohms)
• Seperate sensor from harness to determine fault.
Replace Control.
Sensor Circuit supervisol Failure
Determine if problem is with Key Panel or Control by
Shorted matrix or START key
disconnecting flat cable and measuring cable pins using
pinout chart. Allow up to 1000 OHMS when pressing a
k e y .
EEPROM data shift failure. If repeated, replace control.
Cooling fan stall or other cause of Suspect cooling fan (between ovens) or air flow.
open thermal switch in yellow latch
leads.
together: TIMER, CLOCK, MIN DOWN or 9. While
displayed, pressing MIN UP or 8 and HR DOWN or
6 together will clear them. A fault must exist
continuously for 5 minutes before an F-code is
recorded (F2, F8 are sooner).
• Welded relay contacts
• Cooling fan stalled or blocked
• Air flow to rear of unit
• High resistance in oven sensor leads/
connectors (especially at sensor in rear)
control. Measure sensor resistance (white leads) to be
~1080 ohms at room temperature with 2 ohms per deg
change.
sensor.
control. Measure sensor resistance (white leads) to be
~1080 ohms at room temperature with 2 ohms per deg
change.
Cooling fan or air flow to control area.
• Welded relay contacts
• Cooling fan stalled or blocked
• Air flow to rear of unit
• High resistance in oven sensor leads/
connectors (especially at sensor in rear)
control. Measure sensor resistance (white leads) to be
-1080 ohms at room temperature with 2 ohms per deg
change.
sensor.
control. Measure sensor resistance (white leads) to be
~1080 ohms at room temperature with 2 ohms per deg
change.
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