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Error code reference

U-Line Ice Maker Error Code Time to Clean

Water circulation system requires cleaning.

U-Line codesU-Line ice maker codes

Water circulation system requires cleaning.

First step from the service manual

Clean unit with 37050 cleaner.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
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What Time to Clean means on a U-Line ice maker

The "Time to Clean" indicator on a U-Line ice maker is a maintenance alert triggered by the water circulation system reaching a preset interval that signals cleaning is required. This is not a fault code caused by a component failure, but rather a scheduled reminder built into the unit's control system to prompt routine maintenance of the water circuit, including the reservoir, pump, distribution lines, and ice-making surfaces. Mineral scale, biofilm, and algae can accumulate over time in any water-circulating ice maker, and this alert is designed to prompt action before buildup affects ice quality or machine performance.

The water circulation system in a U-Line ice maker continuously moves water across the evaporator plate or grid to form ice. As this water cycles through the system, dissolved minerals such as calcium and magnesium carbonates are left behind as deposits. These deposits can clog water distribution tubes, coat the evaporator surface, reduce heat transfer efficiency, and encourage the growth of bacteria or mold inside the reservoir and on interior surfaces. The alert ensures technicians and owners address these issues on a regular schedule.

The recommended approach to clearing this alert is to clean the unit using U-Line cleaner part number 37050, which is formulated specifically for this application. The cleaning process involves running the cleaner through the water circulation system to dissolve mineral scale and sanitize internal surfaces. Once the cleaning cycle is completed correctly, the "Time to Clean" indicator can be reset through the control panel. Skipping or delaying this maintenance can result in poor ice quality, reduced ice production, and potential damage to internal components.

Source: manufacturer service documentation.

Common causes of Time to Clean

  1. 01

    Scheduled cleaning interval reached

    Wiring / connection

    The control system tracks usage time and automatically triggers the "Time to Clean" alert at a preset interval regardless of visible buildup. This is the most common reason the indicator appears and simply means routine maintenance is due.

  2. 02

    Mineral scale accumulation

    Wiring / connection

    Hard water causes calcium and magnesium deposits to build up inside the reservoir, distribution tubes, and on the evaporator surface over time. Visible white or chalky residue inside the unit is a sign of scale buildup.

  3. 03

    Biofilm or mold growth in reservoir

    Wiring / connection

    Warm, moist environments inside the water reservoir can support the growth of bacteria, mold, or algae, especially if cleaning intervals are extended. Discoloration, slime, or off-odors from the ice are indicators of biological growth.

  4. 04

    Clogged water distribution components

    Wiring / connection

    Extended periods without cleaning can allow debris and mineral deposits to partially block water distribution tubes or the pump inlet, reducing water flow across the evaporator. This may result in smaller or misshapen ice cubes before the alert appears.

  5. 05

    Previous cleaning cycle not completed or reset

    Wiring / connection

    If a prior cleaning cycle was interrupted or the control panel reset was not performed correctly after cleaning, the alert may persist. Verify the full cleaning procedure was followed and the indicator was properly reset afterward.

See the test procedure for each cause

Frequently asked questions about Time to Clean

What does Time to Clean mean on a U-Line ice maker?
The "Time to Clean" alert on a U-Line ice maker indicates that the water circulation system has reached its scheduled maintenance interval and requires cleaning. It is a built-in reminder, not a component failure. The alert prompts you to run a cleaning cycle using U-Line cleaner 37050 to remove mineral scale, biofilm, and other deposits from the internal water system. Completing the cleaning process and resetting the control will clear the indicator.
How do I fix the Time to Clean alert on my U-Line ice maker?
To resolve the "Time to Clean" alert, clean the unit using U-Line cleaner 37050 according to the cleaning cycle procedure for your specific model. The cleaner is run through the water circulation system to dissolve scale and sanitize internal surfaces. Once the cleaning cycle is fully complete, reset the indicator through the control panel. If the alert reappears immediately after resetting, confirm that the cleaning cycle ran to completion.
Is it safe to use the ice maker when the Time to Clean alert is showing?
While the machine will typically continue to produce ice when the alert is active, consuming ice from an uncleaned unit is not recommended. Mineral deposits and potential biofilm inside the water system can affect ice quality and introduce bacteria or mold into the ice. It is best to perform the cleaning cycle promptly and avoid consuming ice until the unit has been properly cleaned and sanitized.
Will resetting the control panel clear the Time to Clean alert without cleaning?
Resetting the control panel without performing the actual cleaning cycle may temporarily clear the alert on some models, but this is not recommended. The alert exists to protect the machine and ensure ice safety. Bypassing the cleaning process allows scale and biological buildup to continue accumulating, which can lead to reduced ice production, poor ice quality, and potential damage to the water pump and distribution system over time.
How much does it cost to clean a U-Line ice maker?
The primary cost for addressing the "Time to Clean" alert is the cleaning solution. U-Line cleaner 37050 typically costs in the range of $10 to $25 depending on the retailer. If the cleaning process is performed by a service technician, labor costs will vary by region but generally range from $75 to $150 for a standard cleaning visit. Performing the cleaning yourself using the correct cleaner is the most cost-effective approach.

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