You become aware of abnormal performance, instability, false signals, misplaced interference, for no apparent reason

[FORUM XP]

1/ Sensitivity is too high.
- Lower it.

2/ You are in a zone with a lot of interference (high-voltage power lines, electric transformer, electric fence).
- Lower the sensitivity or move to a different zone.

3/ There is a storm nearby and the electromagnetic discharges of lightning are interfering with the detector.

4/ You are close to other working metal detectors.
- Change or shift the frequency (see Frequency shift).

5/ You switched on the detector with the coil near a metal surface or near the stem’s aluminium tube (in the folded-up position).
- Switch it off, then on again with the coil in the air and the stem fully deployed, away from any sources of metal.

6/ The ground balance is set too low.
- In manual mode set it to 90.

7/ The battery is discharged.
- Recharge it.

8/ The ground is heavily infested with iron and other metals.
- Find a less infested place. Don’t practice in your garden!