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FULL SIZE ELECTRIC CONVECTION OVENS - TROUBLESHOOTING
F25105 (December 2001) Page 58 of 60
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). The exact error code displayed will depend on the priority assigned
to the problem in the EPROM’S software. The lower the error code number, the higher the priority. If more than
one problem occurs at the same time, the error code assigned to the higher priority problem will be displayed.
Refer to the error code table below to solve the problem. If the lower priority problem still exists, the next error
code will be displayed. 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".
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
1
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
Er12 - Shorted sensor • 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
NOTE
: 1. Should only see when a new EPROM is installed and powered for the first time.