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

Covers: 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.

Single sourceBrands: Manitowoc3 components

Light-commercial self-contained cuber with a forward-sliding bin for access to the refrigeration parts, a removable water trough, distribution tube and damper door for cleaning, and a front panel with Power, Delay, Clean, Full Bin and Service lights. Calls: Clean light / slow production from scale, Service light, bin-full sensing, hot locations (air in right, out left), and water pressure outside its range.

Safety first

Disconnect power before opening panels.
Use only nickel-safe ice machine cleaner as the manual specifies.
Sealed-system work is for an EPA 608 certified technician.

How it works

Batch cuber: water circulates over a refrigerated evaporator, then a harvest cycle releases the cubes into the bin. A bin-full signal stops production.

Delay function pauses the machine for slow periods or closed days; check it on a 'no ice' call.

Air enters on the right and leaves on the left with no side vents, so it can sit between cabinets; Manitowoc recommends about 5 in at top, sides and back but lists no required minimum.

Operating limits: ambient 40-110 °F, water 45-90 °F, water pressure 20-80 psi at the ice-making water inlet.

Connections: 3/8 in FPT ice-making water inlet and 1/2 in FPT bin drain; 115 V models come with a 6 ft cord and NEMA 5-15P plug.

Components & tests

Unlock all 3 components, specs, service mode and teardown

Full library + AI assistant + the OnCall Tech app for iPhone & Android. $34.90, one time.

Get lifetime access

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): Commercial undercounter cube ice machine by BrokenSphere, CC BY-SA 3.0

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

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

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.

4 components5 common failuresU-Line

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