Error Code E3 / E4 Troubleshooting Guide
Updated Oct 22,2025
Updated Oct 22,2025

Issue description

After starting the HP2 heat press machine, its screen displays error code E3 or E4. At the same time, the buzzer sounds an intermittent alarm (1-second beeps).

Possible causes

The error occurs when the outer NTC sensor is either open-circuited or short-circuited.

Troubleshooting procedure

Step 1: Power cycle the machine

  1. Turn off the heat press.
  2. Disconnect the power supply for at least 2 minutes.
  3. Reconnect the power and restart the machine.

Step 2: Check the error code

If error E3 or E4 appears again, proceed to Step 3.

Step 3: Replace the machine

If the issue persists after restarting, please submit a ticket as instructed to get the machine replaced.

Still experiencing issues?

Should the issue persist after completing the preceding steps, submit a ticket via the "Submit a Ticket" button in the "Help Ticket" section below. The standard response time for xTool Customer Service is one business day.

For a prompt resolution, please include the following details:

  • Issue description: A detailed explanation of the observed problem.
  • Video evidence: Attach a video demonstrating the issue, where applicable.
  • Troubleshooting performed: Any troubleshooting steps you have already attempted, along with their results.

This information is crucial for xTool technical support engineers to provide timely assistance.


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