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error Haswill

Error Code Continous beep (‘di-di-di’)

Alarm indicating an error or malfunction requiring troubleshooting.

? What Causes This

An error condition is present based on the described codes and conditions.

How to Fix It

Identify the displayed code and follow troubleshooting steps to resolve the issue. If applicable, pressing a button will temporarily stop beeping but display persists until resolved.

Source: page 63 of the official manual

From the manual

Manual page 63 — Haswill error Continous beep (‘di-di-di’)

This error code appears in:

Haswill Stc 1000 Temperature Controller