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Error code reference

U-Line Ice Maker Error Code Condenser T Short

Condenser thermistor circuit shorted.

U-Line codesU-Line ice maker codes

Condenser thermistor circuit shorted.

First step from the service manual

Check thermistor connection to harness for moisture or corrosion. Also check connection where thermistor harness attaches to main board. If connections are valid replace the thermistor.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Condenser T Short means on a U-Line ice maker

The Condenser T Short error on a U-Line ice maker indicates that the condenser thermistor circuit has detected a short condition. The condenser thermistor is a temperature-sensing resistor mounted near the condenser coil that continuously monitors condenser temperature and sends resistance-based signals back to the main control board. When the board detects a resistance value that falls below the expected range for the thermistor, it interprets this as a short circuit and triggers this fault code. A shorted thermistor circuit produces artificially low resistance readings, which can cause the board to misread condenser temperatures and disrupt normal ice-making operation.

The most common cause of a shorted thermistor circuit is moisture or corrosion at the wiring harness connections. Water intrusion at the connector where the thermistor harness plugs into the main board, or at the thermistor's own connector, can create a low-resistance path across the signal leads, mimicking a short. Corrosion on the connector pins compounds this by degrading the insulation between conductors. Physical damage to the thermistor wiring, such as chafed insulation or a pinched harness, can also allow conductors to contact each other or a grounded surface.

Diagnosis begins with a thorough inspection of both the thermistor-to-harness connection and the harness-to-main-board connection, looking specifically for moisture, corrosion buildup, or damaged insulation. If the connections appear clean and intact, the thermistor itself has likely failed internally and will need to be replaced. A simple continuity or resistance check of the thermistor leads can confirm whether the component is shorted before committing to a replacement.

Source: manufacturer service documentation.

Common causes of Condenser T Short

  1. 01

    Moisture or Corrosion at Connector

    Wiring / connection

    Water intrusion at the thermistor harness connector or the main board connector can create a short across the signal leads. Inspect both connection points for visible moisture, white or green corrosion deposits, or oxidized pins.

  2. 02

    Failed Condenser Thermistor

    Part replacement

    The thermistor itself may have failed internally, causing it to output a permanently shorted resistance signal. If connections check out clean and secure, the thermistor is the next component to replace.

  3. 03

    Damaged Wiring Harness

    Part replacement

    Chafed, pinched, or cut insulation along the thermistor harness can allow two conductors to contact each other or a grounded metal surface, producing a short. Trace the harness from the thermistor to the board and look for any visible damage.

  4. 04

    Loose or Unseated Connector

    Wiring / connection

    A connector that is not fully seated can cause intermittent pin contact that the board reads as a short. Disconnect, inspect, and firmly reseat both harness connectors to rule this out.

  5. 05

    Main Control Board Fault

    Part replacement

    If the thermistor and all wiring check out correctly but the error persists, the input circuit on the main control board may have failed. Board-level faults are less common but possible when all other causes are eliminated.

See the test procedure for each cause

Frequently asked questions about Condenser T Short

What does Condenser T Short mean on a U-Line ice maker?
The Condenser T Short error means the main control board has detected a short circuit in the condenser thermistor circuit. The condenser thermistor monitors the temperature near the condenser coil and communicates that data to the board through a resistance signal. A short causes the resistance to drop below the expected range, triggering this fault. The most frequent causes are moisture or corrosion at the wiring connectors, or a thermistor that has failed internally.
Can I fix the Condenser T Short error myself?
In many cases, yes. Start by unplugging the unit and inspecting the thermistor harness connections for moisture, corrosion, or loose pins, and clean or reseat them as needed. If the connections look fine, the thermistor itself likely needs to be replaced, which is a straightforward part swap for someone comfortable working with appliance wiring. If the error continues after replacing the thermistor, a faulty main control board may be the cause, which is a more involved repair.
Is it safe to keep using my U-Line ice maker when this error is displayed?
It is not recommended to continue operating the ice maker while this error is active. The condenser thermistor provides temperature data that helps protect the refrigeration system from overheating. Without accurate readings, the unit may not respond correctly to high condenser temperatures, which could lead to compressor damage or reduced unit lifespan.
Will resetting the ice maker clear the Condenser T Short error?
A reset may temporarily clear the error code, but it will return quickly if the underlying issue has not been resolved. The control board will re-detect the shorted thermistor circuit as soon as it resumes normal operation. Addressing the root cause, whether that is cleaning a corroded connector or replacing the thermistor, is necessary for a permanent fix.
How much does it cost to repair a Condenser T Short error on a U-Line ice maker?
Repair costs vary depending on the cause. If only cleaning corroded connectors is needed, there may be no parts cost at all. A replacement condenser thermistor typically runs in the range of $20 to $60 for the part. If the main control board has failed, parts costs can range from $150 to $400 or more, and professional labor will add to that total.

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