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Error Code

U-Line Blast Chiller DEFROSTING TIME Error Code

Request U-Line Service (310) 879-5776
Clara Bennett Written by Clara Bennett Appliance Care Editor Published September 3, 2026 Updated October 20, 2026

Content status: Verified

Error code DEFROSTING TIME
Appliance Blast Chiller
Quick answer

DEFROSTING TIME means a defrost did not end within the maximum time. The manual points to coil icing and, during holding, the hot gas valve.

Model compatibility: U-Line reuses codes across series and model years, so DEFROSTING TIME may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

Defrost did not end within the maximum defrost time (DTO minutes).

What DEFROSTING TIME means

The defrost process did not stop within the maximum defrosting time. A defrost normally ends by coil temperature (DTE). If it does not end within DTO minutes, the alarm triggers.

What the manual says to check

  1. Check the evaporator coil icing status.
  2. If one defrost is not enough, repeat the defrost.

If the alarm occurs during the holding cycle, the problem may be with the defrost device, which the manual names as the hot gas valve. Using the blast chiller as a holding cabinet for a long time can also bring on this alarm.

Models

UCBF432, UCBF532, UCBF632, UCBF559 and UCBF659 with the touch screen controller.

Related alarms

U-Line blast chiller repair in Los Angeles

If the defrost alarm returns after you repeat a defrost, call (310) 879-5776. Tell us the model, what the coil looked like and whether it happened in holding. See our refrigeration repair information too.

Source: U-Line Blast Chiller User Guide & Service Manual, Pub. 30379 Rev. P 11/2022 (Alarm/Failure List); U-Line Blast Chiller User Guide – Touch Screen Manual (alarm list), Rev 08/04/2015

Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.

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