Do System Tests to Identify Defective Components
Powermax65/85/105 SYNC Troubleshooting Guide 810430 11 5
Test 10 – Solenoid valve pressure sensor
If you get a 2-11-n fault code, do this test to identify if the solenoid valve, DSP PCB, or power PCB
is possibly defective. The 2-11-n fault codes identify an electrical problem that is most likely not
related to the gas supply.
Do a check for electrical interference and pinched wires
1. Electrical interference can have a negative effect on the operation of the solenoid valve. Move
the plasma power supply to another location. If you continue to get a 2-11-n fault code,
continue with the remaining instructions.
2. Set the power switch to OFF (O), and disconnect the power cord from the power source.
3. Remove the plasma power supply cover.
4. Remove the component barrier.
5. Examine the connection to the torch lead at the quick-disconnect receptacle. Is the connection
secure? Are the wires in the torch lead pinched, twisted, or damaged? Replace the torch lead if
necessary.
Examine the power input and solenoid valve coils
1. Disconnect the solenoid valve from
J4 (Powermax65/85 SYNC CSA) or
J6 (Powermax65/85 SYNC
CE/CCC and Powermax105 SYNC)
on the power PCB.
2. Reconnect the electrical power. Set
the power switch to ON (I).
WARNING
ELECTRIC SHOCK CAN KILL
The plasma power supply contains dangerous electric voltages that can seriously injure or
kill you.
Use extreme caution if you do service or maintenance work on a plasma power supply
when it is connected to an electric power source and the outer cover or panels are
removed.
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