Service manual

SYMPTOM POSSIBLE CAUSES
Oven not hot enough.
1. Probe malfunction.
2. Control range high (rH1) setting to low. See SETUP
MODE under COMPUTER CONTROL (WKGC,
WKGCX).
3. Control malfunction.
Error Codes
In the display window, the error code will alternate
between the code and the oven cavity temperature or
dashes if the oven is calling for heat (heat light on).
When the condition causing the error is resolved,
normal oven operation can resume.
NOTE: To check a SETUP PARAMETER and its
corresponding DATA VALUE, see SETUP MODE
under COMPUTER CONTROL (WKGC/WKGCX).
NOTE: If the cause of the error is not apparent, check
for these conditions as they may also cause errors to
occur: Electrical noise or a noise event, excess
environmental moisture or temperature, or vibration.
CODE & PROBLEM PROBABLE CAUSE SOLUTION
Er01 - ROM checksum error Internal ROM malfunction Cycle power
Er02 - RAM checksum error Internal RAM malfunction Cycle power
Er03 - Ambient sensor error Ambient temperature is below 32°F
Check ambient temperature at the
control.
Er04 - Configuration error Microprocessor malfunction Cycle power
Er05 - EPROM error Power loss while storing data Cycle power
Er06 - Zone 1 A/D underflow error
• Incorrect sensor type
• Measuring temperature outside
the sensor range
• Check the InP1 setup
parameter. Verify it matches
your sensor.
• Check sensor and connections
for a reversed or open sensor. If
the condition causing the error is
resolved, the error will clear.
Er07 - Zone 1 A/D overflow error Open sensor
• Check the InP1 setup
parameter. Verify it matches
your sensor.
• Check sensor and connections
for a reversed or open sensor. If
the condition causing the error is
resolved, the error will clear.
Er10 - Stack overflow error Microprocessor malfunction
• Cycle power
• Check sensor and connections
for a reversed or open sensor
Er11 - Open sensor error Open sensor
• Check the InP1 setup
parameter. Verify it matches
your sensor.
• Check sensor and connections
for a reversed or open sensor. If
the condition causing the error is
resolved, the error will clear.
WKG Series Full Size Gas Convection Ovens - TROUBLESHOOTING
Page 73 of 74 F32700 Rev. B (0315)