Error Codes - Vulcan-Hart VC4G Service Manual

VC4G & VC6G SERIES FULL SIZE CONVECTION OVENS - TROUBLESHOOTING
SYMPTOM
Oven not hot enough.

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 (VC4GC/6GC).
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
Er01 - ROM checksum error
Er02 - RAM checksum error
Er03 - Ambient sensor error
Er04 - Configuration error
Er05 - EPROM error
Er06 - Zone 1 A/D underflow error
Er07 - Zone 1 A/D overflow error
Er10 - Stack overflow error
F24682 Rev. D (1016)
POSSIBLE CAUSES
1. Probe malfunction.
2. Control range high (rH1) setting to low. SETUP
MODE under COMPUTER CONTROL (VC4GD,
VC6GD).
3. Control malfunction.
PROBABLE CAUSE
Internal ROM malfunction
Internal RAM malfunction
Ambient temperature is below 32°F
Microprocessor malfunction
Power loss while storing data
• Incorrect sensor type
• Measuring temperature outside
the sensor range
Open sensor
Microprocessor malfunction
Page 74 of 75
SOLUTION
Cycle power
Cycle power
Check ambient temperature at the
control.
Cycle power
Cycle power
• 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.
• 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.
• Cycle power
• Check sensor and connections
for a reversed or open sensor