Is it normal for ‘dEF’ to appear during a defrost cycle?
FAQ
Yes. It is common and can be normal, configurable behaviour.
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Yes. It is common and can be normal, configurable behaviour.
What you might see in normal operation:
“dEF” shown steadily for part or all of the defrost.
“dEF” alternating with a temperature (the cabinet probe may be rising temporarily during defrost).
A brief “dEF” message when a defrost starts, then the temperature returns.
What is not normal is when the freezer does not recover to operating temperature after defrost within a reasonable time for your site’s conditions, or when “dEF” appears unusually often. In those cases, treat it as a performance issue to investigate rather than a controller “code fault”.
Read the full guide: Understanding “dEF” vs Fault Indicators on Unifrost Upright Freezer Controllers.
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Understanding “dEF” vs Fault Indicators on Unifrost Upright Freezer Controllers
Learn the meaning behind "dEF" indicators on Unifrost upright freezers to avoid mistakes in Irish kitchens.
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