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SECTION 5 TROUBLESHOOTING
5.1 Initial Check
5.1.1 Check the gas supply pressure and check the flow-path to the PC has been opened.
5.1.2 Ensure that the power supply and command signals are correctly transmitted to the
D-connector pins and RS485.
5.1.3 Check that the output signal matches the external reading.
5.2 Troubleshooting
Use the following table to locate the fault.
SYMPTOMS
Possible cause
Action
1
PC will not control
Gas connection incorrect Check gas connection
Pressure incorrect
Check pressure condition
Wrong control mode
Change the control mode by the
software
Power failure
Check Power and pin position
Setpoint incorrect
Check setpoint signal
Contamination
*Contact Sevenstar
Defective sensor
*Contact Sevenstar
PCB problems
*Contact Sevenstar
Defective Mechanics
*Contact Sevenstar
2
PC100 will not
communicate with
PC
Power failure
Check Power and pin position
Cable problems
Check cable and connector
Address conflict
Check address of PC
Baud rate error
Check baud rate of PC
PCB problems
*Contact Sevenstar
Attention
:
* Mark indicates that reparation and adjustment must be dealt under specialist advices
。
For any other
problems, contact Sevenstar.
