Vulcan-Hart ML-126743 Service Manual page 64

VC4E & VC6E Series Full Size Electric Convection Ovens - TROUBLESHOOTING
CODE & PROBLEM
Er07 - Zone 1 A/D overflow error
Er10 - Stack overflow error
Er11 - Open sensor error
Er12 - Shorted sensor
1
Should only see when a new EPROM is installed and powered for the first time.
F25105 Rev. B (0217)
PROBABLE CAUSE
Open sensor
Microprocessor malfunction
Open sensor
• Incorrect sensor type
• Measuring temperature outside
the sensor range
Page 64 of 64
SOLUTION
• 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
• Check the InP1 setup
parameter. Verify it matches
your sensor.
• Check sensor and connections
for a reversed or open sensor
• Check the InP1 setup
parameter. Verify it matches
your sensor.
• Check sensor and connections
for a reversed or open sensor