EC 30 records that the ice maker's water valve was held open beyond fifteen seconds on five separate occasions, which is far more water than a fill needs.
- What the control is watching
- How long the ice maker's fill valve stays energised each time, and how many of those fills run past the expected length.
- What makes it register
- Five fills of more than fifteen seconds apiece. The control keeps the tally and puts the code up.
- Can you keep using it
- The cabinet keeps food cold either way. Stopping the ice maker being called on is the sensible interim, because the tally counts water arriving faster than it freezes.
The number being counted is the giveaway. A fill is a short event; fifteen seconds is not, and five of them is a pattern, not an accident. The code is less about the valve than about whatever keeps it being asked.
Which is why the first look goes inside the mould, not at the plumbing. A cube that never released leaves the ice maker waiting on a harvest that cannot happen, and the next fill lands on the water already there.
That is the part worth moving on: water that overshoots a full mould has to go somewhere, and it goes down.
What we usually find
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Cubes welded into a slab in the bin, or a wet patch under it, with this code stored
A cube jammed in the mould so the harvest never completed. The valve is asked to fill a mould that is already full, and the tally climbs.
Ice maker, water valve or supply line $270–$830
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An ice maker still overfilling after the bin has been emptied and the jam cleared out
The valve no longer closing cleanly. Grit off a supply line holds the seat open a fraction, which is more than enough across fifteen seconds.
Ice maker, water valve or supply line $270–$830
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The code stored against an ice maker that looks and sounds entirely normal
The circuit back to the control board, shared with other components, and a connection somewhere along it. The wiring diagram decides which one.
Quoted after the diagnosis
Which of these it is gets settled at the visit, before a part is ordered — Sub-Zero Repair Pro Los Angeles, (310) 844-1973.
Follow-ups
- Can I stop it overflowing before anyone gets here?
- Emptying the bin and lifting out whatever is wedged in the mould is a reasonable first move, and Sub-Zero lists that check first too. If cubes keep welding together afterwards, leave the ice maker off rather than resetting it again, and call Sub-Zero Repair Pro Los Angeles on (310) 844-1973.
- Written by
- Yuki Tanabe
- Role
- Refrigeration technician — controls and sensors
- In the trade
- 18 years in the trade
