Board reference
WSM-315 Control Panel Reference
A TIG control-panel service reference for WSM-315 welders, focused on timing, current command and protection-code evidence.
Quick Answer
The WSM-315 control panel should be read as a process-control interface: 2T/4T, pre-flow, start, upslope, base current, crater/end current, post-flow and protection-code evidence.
- Use this page when TIG behavior follows the wrong timing sequence or panel settings do not match machine behavior.
- Do not replace the HF board before checking whether the panel/control board is commanding HF, gas and current timing correctly.
- Protection code evidence should be interpreted before changing power-stage parts.
WSM-315 panel control evidence
| Panel function | Service meaning | Related symptom |
|---|---|---|
| 2T / 4T mode | Torch switch latching and release behavior. | Machine starts/stops at wrong time. |
| Pre-flow / post-flow | Gas timing before and after current. | Gas too early, too late or absent. |
| Start / upslope | Start-current and ramp behavior. | Arc starts but current does not ramp normally. |
| Base / peak current | Pulse or current command layer. | Current cannot adjust or is unstable. |
| Crater / end current | Arc-ending behavior. | Crater fill/end current abnormal. |
| Protection code | Panel-side clue for fault classification. | Do not interpret all codes as power-device failure. |
Related diagnostics
Open the timing or HF route after reading panel evidence.