Fault Condition

Additional Information

 

 

F67: Over Frequency Fault

Verify heating cable properly wrapped

 

Verify material being heated is magnetic

 

 

F68: Cable Connection Fault

Check for loose/open output connection

 

Verify all output cables are same type

 

Verify receptacle plug connected

 

 

F69: Coolant Overtemp Fault

Check coolant flow and level

 

Clean coolant filters and heat exchanger

 

Increase number of turns

 

Verify appropriate insulation thickness

 

 

F70: Internal Communication Fault

Service required

 

 

F71: Internal Thermistor Fault

Service required

 

 

F72: Coolant Thermistor Fault

Service required

 

 

F73: Decoupled/Open Coil

Service required

 

 

F74: Isolation Fault Self-Test Error

Service required

 

 

F75: Internal Power Supply Fault

Service required

 

 

F76: Current Source Control Fault

Service required

 

 

F77: Power Source Internal Comm Fault

Service required

 

 

F78:Output Current Sense Fault

Check for loose/open output connection

 

 

9-6. System Diagnostic Screens

Additional system diagnostics are available and accessible through the operator interface. Detail operational parameters can be accessed by pressing

and holding the Run Status

button and pressing the Parameters

kW

V HzA button.

When this feature is initially activated, the following screen appears on the LCD display:

 

 

System Diagnostic Screen

RemCmd: 1023

Off

Cable1: LQD DIAG1

OutI1:

0

A

Cable2: LQD

OutI2:

0

A

ClntFR: 0.75 GPM

IsrcFb:

0

A

ClrSts: Flowing

RemCmd − This is the value of the remote command and the status of the remote contactor.

.Remote controls can be used to enable/disable output. They do not affect output power level.

Out I1 − This is the value of the output current on output 1.

Out I2 − This is the value of the output current on output 2.

Isrc FB − This is the value of the amperage in the current source inverter.

Cable 1 − This is the cable type hooked up to output number one. Possible labels:

SAIR − for an air-cooled cable

SLQD − for a liquid-cooled cable

SPLUG − for a protective plug

SOPEN − no cable or plug in place

Cable 2 − This is the cable type hooked up to output number two. Possible labels:

SAIR − for an air-cooled cable

SLQD − for a liquid-cooled cable

SPLUG − for a protective plug OM-222 166 Page 44

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Miller Electric ProHeat 35 manual System Diagnostic Screens, Off Cable1 LQD DIAG1 OutI1 Cable2 LQD OutI2 ClntFR 0.75 GPM