U-Line 15-inch clear ice machines (UHCP115 pump / UHCL115 gravity, 3 Class): quick sheet

Covers: U-Line 15 in residential clear-cube undercounter ice machines: UHCP115 (factory drain pump) and UHCL115 (gravity drain only) in stainless, black, white and integrated finishes (e.g. UHCP115-SS01A, UHCL115-WS01A). Outdoor UOCP115 and ADA ACP115 versions share much of the design but check their own guides.

Single sourceBrands: U-Line4 components

Grid-type clear-ice cuber that freezes 32 cubes per cycle in a 4 x 8 slab and harvests with hot gas, with an electronic control that has a service mode with temperature readings, an error log and a relay toggle for testing each component. Calls are scale (clean alert), slab not releasing, wrong cube thickness, drain backing up (gravity drain with a trap or no fall, or a failed pump) and the 'dr' door error.

Safety first

Disconnect power before maintenance.
Wear gloves and eye protection with ice machine cleaner.
Sealed-system work (refrigerant) is referral only for an EPA 608 certified technician.

How it works

Water is pumped over a refrigerated grid so ice forms in layers (clear cubes). At the default thickness a cycle takes about 15-20 minutes and leaves cubes with a 1/4-1/2 in dimple and a thin ice bridge.

Ice thickness is adjustable one step at a time from the control; wait 24 hours before re-checking. A thicker bridge makes cubes stick together as a slab.

Water supply: 1/4 in compression fitting, cold potable water at 20-120 psi, with a shut-off valve; U-Line warns against plastic supply line.

Gravity drain models need the drain to fall at least about 1/4 in per foot with no traps under the unit and the drain not directly below it (solid base). Pump models lift up to 10 ft, routed up as close to the back of the unit as possible.

Rated indoor only, for 50-100 °F ambient; production falls in a hot space.

Components & tests

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work. © 2026 OnCall Tech. Original content; not a reproduction of any manufacturer document.Generic part photos (not of this brand): Large stainless refrigerator set flush between kitchen cabinets by Alex Qian, Pexels License

Diagnostic guides for this appliance

Guide · Ice Maker

Undercounter ice machine 'no ice' or bad cubes: check the water supply and drain against the maker's limits first

Ice machines are fussy about the supply: pressure, water temperature and drain fall all have published limits, and they differ by brand. U-Line's 15 in clear-ice machines want 20-120 psi cold water on a 1/4 in compression fitting and a gravity drain falling about 1/4 in per foot (or a pump model with up to 10 ft lift). Manitowoc's NEO undercounters want 20-80 psi and 45-90 °F water, with a 3/8 in FPT inlet and a 1/2 in FPT drain. Confirm the install meets those numbers before replacing valves, pumps or boards.

5 steps ~30 mineasy

Guide · Ice Maker

Refrigerator ice maker making small, thin or hollow cubes

In a refrigerator ice maker this is almost always a water-supply problem: low pressure, a clogged or badly seated filter, a kinked line or a reverse-osmosis system starving the valve. Low fill means the mold or tray doesn't fill. On Whirlpool-style ice makers the last cavity, next to the thermostat, starves first and triggers an early harvest. Fix the supply before replacing parts.

8 steps ~30 mineasy

Guide · Ice Maker

Refrigerator ice maker freezes cubes but won't harvest

Rule out the simple stops first: the shutoff arm or bin sensor, the On/Off control and a warm freezer. Then force a harvest with the ice maker's own test (T-H jumper on Whirlpool modules, three arm presses on GE, the Test button on Samsung and LG). If the forced harvest works, the ice maker is fine and the trigger (thermostat/thermistor or temperature) is the issue. If it doesn't, the ice maker usually gets replaced.

7 steps ~30 mineasy

Other ice makers manuals

Manual · Ice Maker

GE Profile Opal (first generation, 24 lb/day) countertop nugget ice maker: quick sheet

Original GE Profile Opal countertop nugget ice maker, rated 24 lb/day with a 3 lb bin (retail model OPAL01GENSS and color variants). The Opal 2.0 (Wi-Fi, 38 lb/day class) has its own sheet: qs-ge-opal-2.

3 components4 common failuresGE Profile Opal

Manual · Ice Maker

NewAir ClearIce40 countertop clear-ice maker (40 lb/day): quick sheet

NewAir ClearIce40 (MFG part CLEARICE40), the hand-filled countertop clear-cube maker sold through NewAir and many retailers. Not the NewAir 15 in undercounter clear-ice units.

2 components3 common failuresNewAir

Manual · Ice Maker

Manitowoc NEO 140 / 190 undercounter cube ice machines (UD-0140A, UY-0140A, UR-0140A, UD/UY-0190A): quick sheet

Manitowoc NEO 26 in wide air-cooled undercounter cubers with a built-in 90 lb bin: U-140 (UR regular, UD dice, UY half-dice) and U-190 (UD dice, UY half-dice). Common in bars, offices and high-end residential. Later SKUs (UDF0140A, UYF0140A, UDP0140A with integrated filter) are related; check their own spec sheets.

3 components4 common failuresManitowoc