Fault Conditions; Fault Condition Codes - Miller Electric ProHeat 35 Owner's Manual

Limit Condition
L11: Coolant Overtemp Limit
L12: Power Source Overtemp Limit
L13:Cable Connection

9-4. Fault Conditions

A fault condition occurs if the system encounters an isolation fault, encounters operating conditions outside operational limits, or if there is a serious
problem with the system. Should a fault condition occur, the output is immediately turned off, the red Fault LED flashes and the Stop
LED flashes. If the active screen on the LCD display is Run Status or Parameters, a message describing the particular fault condition will appear on the
display. If the active screen is Program, press the Run Status
Pressing the Decrease
Stop button LED will continue to flash indicating that the process has stopped.
To obtain additional information regarding the fault condition and suggested solutions to resolve the fault, press the Increase
LCD display will indicate possible solutions based on the type of fault condition. In most cases, a fault condition will indicate that service is required.

9-5. Fault Condition Codes

Fault Condition
F51: Thermocouple #1 Internal Fault
F52: Themocouple #2 Internal Fault
F53: Thermocouple #3 Internal Fault
F54: Thermocouple #4 Internal Fault
F55: Thermocouple #5 Internal Fault
F56: Thermocouple #6 Internal Fault
F57: CJT Sensor Internal Fault
F58: Output Voltage Fault
F59: Output Current Fault
F60: Temperature Sensor Fault
F61: Coolant Flow Fault
F62: Isolation Fault
F63:Line Voltage Fault
F64: Power Source Overtemp Fault
F65: Current Source Fault
F66: Under Frequency Fault
Check coolant flow and level
Clean coolant filters and heat exchanger
Increase number of turns
Verify appropriate insulation thickness
Check for blocked vents
Clean wind tunnel heat sinks
Check for loose/open output connection
Verify all output cables are same type
Verify receptacle plug connected
button will acknowledge the fault and the red Fault LED will stop flashing and remain on continuously. However, the
Service required
Service required
Service required
Service required
Service required
Service required
Service required
Service required
Service required
Check control TC connections
Check control TC extension cable
Check for coolant leak
Clean for coolant blockage
Check coolant filter and level
Check coolant connections
Check for exposed conductor
Clean for moisture on cables
Check line voltage
Verify power source vents and
wind tunnel are unobstructed
Service required
Check for loose or open connections
in output cable
Decrease number of turns
Decrease coil space
Additional Information
button to display the fault condition.
Additional Information
button
button, and the
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