Monogram Ice Makers: Clear and Nugget Models Compared

Monogram ice makers range from compact undercounter units to wide stainless models, and they are one of the few appliances that works on water, cold and a drain at once. That makes them sensitive to supply problems and to scale. Here is the lineup, the verified light meanings and the checks that are safe for owners.

Models

• 24 inches, current: ZIBI240HII, custom panel.
• Current, no width listed: UNC15NPWII, custom panel and handle required. UNC marks a nugget ice maker.
• 15 inches, status unknown: UNC15NJII.
• Discontinued: ZISS48NCSS (48 inch, Smart) and ZIC36NALH (36 inch).

We do not list production rates or bin sizes. Your label and manual are the source for those.

Where to find the label

Look inside the cabinet on a side wall, near the bin or under the top edge. A panel-ready unit may need the door fully open. Photograph it for us.

Indicator lights with verified meanings

These four have pages of their own.

• CLEAN light yellow: the control senses that cleaning will soon be needed.
• CLEAN light red: the ice maker needs cleaning, and production drops sharply or stops if it is left.
• OFF light, 2 blinks: a bin thermistor fault, such as an open or disconnected sensor or a wiring problem.
• OFF light, 3 blinks: a harvest failure, where the evaporator thermistor did not reach its target in the allowed time.

Count the blinks twice and write down what you see before touching the power.

Common complaints

Little or no ice

Low output can come from a closed or partly blocked water supply, a filter that needs changing, scale on the evaporator or a warm room. See low ice production.

Small, hollow or cloudy cubes

Poor water flow or mineral build-up changes the shape of the ice. Small hollow cubes explains the likely causes.

Water on the floor

A leak can come from a kinked supply line, a clogged drain or a bin that is out of level. Switch it off and dry the area.

Noise during harvest

Cracking and dropping sounds are normal. A grinding or a continuous buzz is not.

Safe checks

1. Confirm power at the breaker and any protected outlet.
2. Make sure the water shutoff valve is fully open.
3. Clear the front grille of dust.
4. Check that the drain is not kinked where it can be seen.
5. Replace a filter that is due, following the manual.

Do not open the cabinet back or pour cleaner into the water line.

Water quality and cleaning rhythm

Ice machines turn the water in your supply into a solid, and whatever is dissolved in that water stays behind as a film. In many Bay Area homes that means mineral scale builds on the cold surfaces over time, and the machine responds by warning you with the CLEAN light before it loses output. Treat the yellow light as your cue to arrange cleaning on a convenient day instead of waiting.

A filter on the supply line helps, but only when it is changed on time. A clogged filter restricts flow, and a machine that is starved of water can produce thin or hollow cubes, which are often mistaken for a failing compressor. If the ice tastes off, look at the filter, the bin and the supply line before you blame the machine.

Drain and level

An undercounter ice maker drains by gravity or a small pump, and both can be fooled. A drain line that sags, a bin that tilts or a floor that is not level lets melt water sit and creates smells. If the cabinet was adjusted after a countertop change, a quick check that it still sits level is worthwhile. Describe what you find when you ask for a visit.

What to tell the technician

Note which light is on and how often it blinks, when the problem started, whether the bin is full or empty, and whether the water valve was recently touched. Those few facts shorten the diagnosis a great deal.

Next step

Request Monogram ice maker repair. We diagnose, give a written estimate and wait for your approval.

Frequently asked questions