Written by
Elena Vasquez Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeAIR PROBE (S1)
ApplianceBlast Chiller
How the alarm shows up
The Alert icon blinks on the touch screen.
The buzzer sounds.
Touching the Alarm icon brings up the message and its details.
What AIR PROBE (S1) tells you
The air probe has stopped working. For this alarm the manual gives a single next step, which is to call service.
Units with this alarm
It is in the alarm and failure list of the touch screen controller used on the UCBF659, UCBF632, UCBF559, UCBF532 and UCBF432.
Check the other probe alarms
Each probe reports on its own. The evaporator probe has its own entry, EVAPORATOR PROBE (S2), and insert probe core 1 is covered under FOOD PROBE (PT1).
Blast chiller service and repair in San Francisco
Blast chiller owners in San Francisco and around the Bay Area who see AIR PROBE (S1) can ring (415) 329-7078. Our U-Line freezer repair information describes the equipment we work on. Keep the alarm name, the model number and a note of anything you have already tried within reach when you call.
Model compatibility: U-Line reuses codes across series and model years, so AIR PROBE (S1) 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
The air probe has failed and the manual says to call service.
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.
Frozen food gives you little time. See how U-Line freezers, refrigerator/freezer combinations and commercial blast chillers are diagnosed, and what to do…
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your U-Line appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
