Written by
Clara Bennett Appliance Care EditorPublished September 3, 2026Updated October 20, 2026
Content status:
Verified
Error codeHIGH TEMPERATURE
ApplianceBlast Chiller
Quick answer
HIGH TEMPERATURE appears when air temperature rises above the higher limit during the holding cycle.
Model compatibility: U-Line reuses codes across series and model years, so HIGH TEMPERATURE 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
During holding cycle, air temperature rose above the higher limit (parameter ALH).
What HIGH TEMPERATURE means
The alarm occurs during the holding cycle when the air temperature goes above the higher temperature limit. That limit is parameter ALH, a differential to the setpoint.
Models
UCBF432, UCBF532, UCBF632, UCBF559 and UCBF659 with the touch screen controller list it.
HIGH PRESSURE concerns head pressure instead of air temperature.
Blast chiller service in Los Angeles
If this alarm shows while the unit is holding, call (310) 879-5776 from Los Angeles. Give us the model, the time of the alarm and what you tried. Our refrigeration service page has background.
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.
Seeing this code on your U-Line appliance?
Book a specialist visit for a clear estimate and approval before any repair.
U-Line products are compact, built-in, and often visually similar across generations. Effective repair starts with the exact model, the symptom you can…
