Ice maker and ice machine
Undercounter Ice Machine Standing in Water
In the owner's words
The ice machine under the bar counter has water sitting in the bottom of the bin. The ice is turning to slush, and a little water crept out onto the floor.
Short answerAn undercounter ice machine standing in water has lost its way out: the drain line is kinked, blocked or short of fall, or, on a model built with a drain pump, the pump has stopped. Sub-Zero Appliance Repair Seattle, (206) 339-4211, follows the drain path from the bin to the house drain before suspecting the machine.
Signed
- Technician
- Marta Fennimore
- Bench time
- 12 years in the trade
- Title
- Refrigeration technician — ice systems and water supply
- Carries
- EPA 608 certified
- Dated
- Drain hose
- Ice bin
- Cubes
Pattern Ledger
Ice Machine Not Draining: how it usually goes
- Most often Drain line kinked, looped or blocked
-
Gives itself away by Water sits level in the bin, and the hose behind the unit sags, climbs or is pinched against the cabinet
Price band none set for this work — quoted after the diagnosis
- Sometimes Drain pump stopped, on machines ordered with one
-
Gives itself away by A pump model gathering water with its line clear, the pump silent or humming without moving water
Price band none set for this work — quoted after the diagnosis
- Rarely Gravity drain installed without enough fall
-
Gives itself away by Draining was always sluggish, worse after the machine was slid out and back, with no single blockage found
Price band none set for this work — quoted after the diagnosis
Telling these three apart is what the $89 visit is for. Sub-Zero Appliance Repair Seattle · (206) 339-4211
Standing water is a drain problem first
When water collects in the bin, the machine is usually doing its part and the water has nowhere to go. Gravity models depend on the hose running downhill the whole way; the UC-15I installation guide asks for a quarter inch of drop per foot of horizontal run, and says an air gap will likely be needed. A hose that sags, climbs or gets pinched as the unit slides back holds water in the line, then in the bin.
Where the pump comes in
A drain pump frees the drain from slope but adds a part that can stop. A pump model with a clear line and a flooded bin points at the pump or what powers it; a gravity model rarely has a mechanical cause at all.
Why cleaning belongs in the story
Film settles in the drain. Sub-Zero’s UC-15I routine is a cleaning cycle and a sanitizing cycle every six months, and an overdue machine often drains better after one.
What you can check safely
- If water is reaching the floor, switch the machine off and close its water supply.
- Look along the drain hose behind the unit for a kink, a loop, or a spot crushed when the machine was pushed back.
- Check the air gap or standpipe the drain empties into for debris or a slow-running trap.
- Think back to the last cleaning cycle; Sub-Zero sets one every six months for the UC-15I.
Owner checks end there. Sealed tubing, wiring behind the grille and anything held by screws belongs on a service call — Sub-Zero Appliance Repair Seattle, (206) 339-4211.
Questions owners ask about this
Why does an ice machine need a drain at all?
Water is part of how it works. Sub-Zero notes that water sprays and drips inside the ice-making assembly during normal operation, and whatever does not become ice, along with melt from the bin, has to leave the cabinet. The UC-15I installation guide says plainly that a drain must be installed.
How do I know whether my ice machine has a drain pump?
Sub-Zero sells the UC-15I with or without one. A gravity model runs its hose to an open drain; a pump model routes its tubing from a drain pump at the back of the unit. The installation paperwork usually settles it, and Sub-Zero Appliance Repair Seattle, (206) 339-4211, confirms it on the visit.
Is a slow drain something the installer should have caught?
Often, yes. Sub-Zero's start-up check pours a gallon of cold water into the bin and expects it gone in 60 seconds; if it is not, the guide blames a kinked tube or an incorrect drain. A machine that has always drained slowly may never have passed that test.