# Z2020 plasma THC factory reset and E5 (P09)

- Source-Date (SAST): 2023-08-19 12:53
- Dest: public
- Review-after: 2027-02-28
- Status: current

## Facts

- Compatible with other THC models, but a default install can show **E5**.
- Factory reset (Z2020): press **ENTER** and **-** (minus) together, then **+** (plus) to confirm. No prompt; the unit reboots after the sequence.
- **P09** is limit-switch type. Wrong setting causes E5. **0** = NO, **1** = NC.
- If the THC torch up/down motor runs in reverse, swap the wires of **2.4 MOTOR1** and **2.5 MOTOR2**.