A U-Line undercounter unit that drifts warm, or an ice machine that stops filling the bin, doesn’t come with a single answer. U-Line’s own service tables list several causes behind each of these symptoms. Some are settings and airflow you can check in a few minutes. Others are a compressor, a fan, a valve or a sensor that has to be tested with the unit opened up.
This guide uses U-Line’s current user guide and service manuals for two models: the UHWC124 wine refrigerator and the UHCL115 clear ice machine. The UHCP115, the clear ice model with a factory drain pump, is referenced for drains. Other U-Line models have similar controls, but codes and menus can differ. Find your model and serial number on the plate inside the cabinet before you do anything else.
A refrigerator or wine unit that isn’t cooling
Start with the checks U-Line lists for “Product Is Not Cold Enough” in the UHWC124 guide, page 26:
- Set a cooler set point.
- Make sure the unit isn’t in direct sun or a very hot space.
- Check that the door closes and seals.
- Make sure the interior light hasn’t been left on too long.
- Make sure nothing blocks the front grille at the bottom.
- Make sure the condenser coil is clean and free of dust and lint.
Then measure the bottles, not the air. U-Line says air temperature doesn’t show product temperature. Its method on page 27: partly fill a plastic bottle with water, put an accurate thermometer in it, cap it, leave it where you store wine for 24 hours, and don’t open the door during the test. Adjust the set point in small steps after that.
Two control settings can look like a breakdown. In Showroom mode the display reads SH, the light and display work, and the compressor and fans don’t run at all. In Sabbath mode the light and display go dark while the unit keeps cooling. Both are on page 18 with the button commands to exit.
If the checks are done and the bottles are still warm, U-Line’s service table on page 38 lists three different “not cooling” causes:
- Compressor overheating. Check airflow through the condenser, whether the condenser is clean, and whether the condenser fan runs.
- Compressor not running. Test the overload and relay.
- Compressor running with no cooling. This goes to U-Line’s System Diagnosis Guide for the sealed system.
From the outside, all three look the same: a warm cabinet. The repairs are very different, and sealed-system work is the expensive end. That’s why a technician measures before anyone orders a part.
Frost, sensors and the door
Light frost on the rear wall that melts each off cycle is normal, according to page 21. A buildup of 1/4 inch or more calls for a manual defrost and a look at the door seal. On a built-in unit that matters, because U-Line says the drain pan wasn’t designed for manual defrost water and the unit must be removed from the cabinetry first (page 22). Pulling a unit from its cutout is a job for a technician.
The control also protects your wine if its temperature sensor fails. U-Line says the unit keeps cooling in a backup “Self Preservation Mode” (page 41). That means a unit can keep running while something is still wrong, so an odd temperature pattern is worth reporting even if it never goes fully warm.
A clear ice machine making no ice or too little
U-Line’s owner table for the UHCL115, page 31, splits ice problems into separate lines:
- No ice: make sure water is reaching the unit and the ice maker is turned on.
- Not enough ice: make sure the condenser coil is clean.
- Poor ice quality: check that the unit is level, and clean the ice maker.
- Water in the ice bin: the drain may be restricted. Make sure it’s free of debris.
Check the modes first. Silent mode pauses ice production for three hours and counts down 3H, 2H, 1H on the display. Sabbath mode stops new ice from forming. Showroom mode lights the display, but the unit won’t cool (page 24).
It also helps to know what normal looks like. U-Line says each cycle forms 32 cubes on a 4 by 8 slab and takes about 15 to 20 minutes at the default thickness setting (page 25). Cube thickness is adjusted one step at a time, then left 24 hours before you check again.
The cleaning cycle
The clear ice machine has an automatic clean alert. U-Line says to run the cycle when it alerts you, and otherwise every three months. Hard water can mean more often, and U-Line suggests having a plumber test the water if that happens (page 27).
The cycle uses only U-Line Clear Ice Machine Cleaner, part 80-55667-00. U-Line warns that any other cleaner can ruin the evaporator finish and will void the warranty. Don’t force ice off the evaporator with anything. The automated clean runs about 45 minutes, and the unit restarts about 15 minutes later. Throw out the first harvest. U-Line says uneven cubes or water spilling into the bin can happen at first and should settle within 24 hours. If power drops during the cycle, the whole cycle has to be repeated (page 28).
Water in the bin and the drain
A gravity drain needs at least a 1-inch drop for every 48 inches of run, no traps, and venting per local code. It can’t drain straight down under the unit, because the base is solid. If the drain has to go up to a standpipe or a disposal, the unit needs a drain pump, which lifts up to 10 feet (UHCP115 guide, pages 12 and 13).
So standing water in the bin can be a kinked hose, debris in the bin drain hole, an install that never had enough fall, or a pump that quit. U-Line’s service table lists all of these (UHCL115, page 42).
When the checks don’t bring the ice back
Past the owner checks, U-Line’s service table on page 42 names parts a technician tests one by one in service mode:
- No ice: the unit isn’t level, the water valve, the circulation pump, or an evaporator that isn’t getting cold.
- Low ice: a dirty evaporator, a dirty condenser, a faulty thermistor, or the condenser fan.
- Ice won’t drop at harvest: a dirty evaporator, a unit that isn’t level, or a faulty hot gas valve.
- Ice too thick or too thin: a dirty evaporator, a water supply problem, or the hot gas valve.
Codes on the display
U-Line units show very few codes to the owner. The rest sit in an error log that only service mode can read.
- dr on a clear ice machine: the door may not be sealing. Close it completely. If it won’t clear, the guide says to contact service (UHCL115, page 31).
- Door alert on the UHWC124 wine refrigerator: shows after the door has been open more than five minutes (UHWC124, page 18).
- E3 on the U-1224RFS refrigerator: the door may have been open too long. For any other ER or E code, U-Line says to contact service (U-1224RFS guide, page 28).
- Service log codes on the clear ice machine: E0 through E10 cover door and sensor faults. P1 means the pump circuit is open on units with a drain pump. U-Line says only the door error shows on the display with a tone (UHCL115, pages 45 and 46).
Don’t try to clear or reprogram anything in service mode. Several of its settings carry U-Line’s warning not to change them without calling its tech line.
What to send when you book
If your U-Line is under warranty, start with U-Line. Its guide points to the Find a Servicer page on u-line.com and asks you to register the product.
Out of warranty, send us the model and serial number, a photo of the display, and a short note: warm bottles or no ice, since when, and which checks above you’ve already done. A water-bottle temperature reading helps.
ADRIUM repairs U-Line wine refrigerators, refrigerators and ice machines across the Bay Area. The $99 diagnostic is per visit, covers any other units checked on that visit, and is credited toward the repair. You get a written estimate before any work starts. Book a visit here.
More reading: wine fridge not cooling, wine fridge and wine cooler repair, built-in wine storage: what breaks and refrigeration repair.