U-Line E6 (Class Series): Thermistor 2 Short in Error Log

E6 (Class Series) at a glance

Code

E6 (Class Series)

Appliance

U-Line wine refrigerator

Applies to

U-Line Class Series wine coolers (UHWC524, 2224DWR)

Type

Needs attention soon

Can you clear it yourself?

Sometimes, after the safe checks below

Most likely cause

Thermistor 2 has failed as a short

What you may notice with E6 (Class Series)

• E6 is listed with the sensor entries in the log
• The temperature inside may wander from the setting
• The cooler may still run as though nothing changed

How the wine refrigerator detects E6 (Class Series)

In these coolers the second temperature sensor, Thermistor 2, sends its reading back through a dedicated circuit. The control interprets the electrical value as a temperature, provided it falls inside the span a working sensor would produce.

A short circuit drives the value outside that span. The control cannot treat it as a real temperature, so it writes E6 to the error log table as the shorted reading for Thermistor 2. The conductors may be touching inside the sensor, along a pinched wire or at a damp connector. The log does not separate these cases. Meanwhile the cooler has to run without a dependable second temperature input, so its zone may not be regulated as precisely as usual until the problem is corrected.

Likely causes of E6 (Class Series)

• Thermistor 2 has failed as a short
• The sensor wiring is crushed or chafed
• Dampness has crept into the connector

Can you keep using the wine refrigerator with E6 (Class Series)?

Short-term use is possible, with care. The control cannot rely on Thermistor 2, so the cabinet may drift away from the setting. A thermometer inside is the dependable guide, and checking it several times a day is sensible. If the reading climbs, carry the wine to a cooler place and switch the cooler off until the sensor circuit has been tested.

What you can safely check

1. Switch the power off at the plug for a minute, then switch it on again.
2. Note the cabinet temperature on a thermometer of your own.
3. Keep the back of the cooler dry.
4. Leave all covers on.
5. If E6 repeats, call us.

What our technician does for E6 (Class Series)

• Test Thermistor 2 for a short circuit
• Check the wiring harness and connector apart from the sensor
• Replace the failed part and watch for a repeat entry

How to keep E6 (Class Series) from coming back

• Keep the area behind the cooler dry and free of stored items.
• Take care not to crush the sensor wiring when pushing the cooler back into place.
• Look at the display now and then for repeat entries.

Technical reference

Code

E6 (Class Series)

Appliance

U-Line wine refrigerator

Control family

U-Line Class Series wine coolers (UHWC524, 2224DWR)

Maker documentation

U-Line owner manuals and support

Checked

November 2026

Code meanings come from the maker’s documentation and our own repair work; we do not reprint the maker’s document. Confirm the full model number before acting on a code. We are an independent repair company, not affiliated with U-Line Corporation.