Garrett ACE 400i - User Manual

Questions and Answers

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Justin KnoxJul 27, 2025
Why does my Garrett ACE 400i make erratic sounds?
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  Joe WilliamsJul 27, 2025
  Erratic sounds or Target ID cursor movement can occur for several reasons. First, make sure your searchcoil is securely connected and the coil cable is snugly wound around the stem. If you're using the detector indoors, electrical interference and metal in floors and walls can cause issues. Also, check if you are near power lines, wire fences or other metal structures. Try adjusting the frequency or reducing the sensitivity setting to resolve this.
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Eric FryAug 1, 2025
What to do if my Garrett ACE 400i Metal Detector is not finding specific targets?
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  Sean ParkAug 2, 2025
  If you're not finding specific targets, make sure you're using the correct mode for the type of hunting you're doing. For example, if you're hunting for coins, use COINS mode to eliminate undesirable targets. Alternatively, use the ZERO-DISC mode to detect all metal targets and ensure your desired targets are present.
K
kellylisaAug 8, 2025
What to do if Target ID Cursor bounces on Garrett ACE 400i Metal Detector?
- O
  oparkerAug 9, 2025
  If the Target ID Cursor bounces, try scanning from different directions until it becomes more stable. Also, consider using Iron Audio to help identify iron targets.
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Ashley LoweAug 13, 2025
What to do if Garrett ACE 400i has intermittent signals?
- D
  Danny DavisAug 14, 2025
  To handle intermittent signals, scan from different directions to help define the signal. If you're dealing with multiple targets, switch to the ZERO-DISC Mode or press the pinpoint button to precisely locate all targets. In trashy areas, consider using the Super Sniper™ or a 5" x 8" DD searchcoil.
S
Sabrina CarrollAug 20, 2025
How to fix a Garrett ACE 400i Metal Detector with no power?
- M
  Mary QuinnAug 20, 2025
  To fix a Garrett Metal Detector with no power: 1. Ensure batteries are installed in the correct orientation. 2. Replace all old batteries with new batteries.

Summary

ACE 400 i Control Panel Overview

Control Panel Components

Identifies and briefly describes the main controls and indicators on the detector's panel.

Quick Start Guide

Power On and Select Mode

Instructions for powering on the detector and choosing a detection mode.

Adjust Settings and Begin Scanning

Guidance on adjusting sensitivity/discrimination and starting the search.

Detector Assembly

Power On and Basic Controls

Power ON;OFF and Factory Reset

Details on how to turn the detector on/off and restore factory settings.

Battery Level and Frequency Adjust

Information on checking battery status and adjusting operating frequency.

Target Information

Target ID Legend and Cursor

Explanation of the Target ID Legend and Cursor for identifying metal types.

Lower Scale and Depth Indicator

Understanding the Lower Scale (discrimination) and Coin Depth Indicator.

Digital Target ID

Using the Digital Target ID for precise target identification.

Selecting Modes (Discrimination Patterns)

Preset Mode Descriptions

Overview of the different preset detection modes and their applications.

Audio Features

Tone ID and Iron Audio

How different tones indicate target types and the function of Iron Audio.

Headphone Jack Usage

Information on using headphones with the detector.

Sensitivity Adjustment

Notch Discrimination

Methods for Modifying Discrimination Patterns

Methods for adjusting the discrimination pattern to reject unwanted targets.

Iron Masking

Iron Audio Feature

Pinpointing Technique

Pinpoint Procedure Steps

Step-by-step guide on how to use the pinpoint function for accurate target location.

Bench Tests for Detector Familiarization

Conducting General Bench Tests

Instructions for performing bench tests to understand target responses.

Iron Audio Feature Demonstration Test

A specific test to demonstrate the effectiveness of the Iron Audio feature.

Hunting Tips for the ACE 400 i

Coil Swing and Ground Coverage

Tips on proper searchcoil swing and ground coverage for efficient searching.

Isolating Adjacent Targets

Strategies for separating signals from closely spaced targets.

Troubleshooting Guide

Common Symptoms and Solutions

Lists common operational problems and their recommended solutions.

Battery Replacement Procedure

Metal Detecting Code of Ethics

Safety Cautions

Caring for Your ACE 400 i Detector

ACE 400 i Warranty and Service

Warranty Service and Troubleshooting Checks

Guidance on common issues, dealer contact, and warranty service.

ACE 400 i Accessories

Garrett ACE 400i Specifications

General

Type	-
Control type	Buttons
Frequency band	10 kHz
Search depth (max)	- m
Search coil diameter	- mm
Suitable for materials	Metal
Search depth adjustment	Yes
Battery type	AA
Number of batteries supported	4