The ice looks wrong
Why are the cubes small or thin?
Small or thin cubes mean the mould is getting less water than the cycle expects, and Sub-Zero points at low water pressure before anything else. Denver Sub-Zero Repair Experts reads a shrinking cube as a measurement: the freeze is still doing its job, so the shortfall sits between the house shut-off and the fill tube.
Pattern
What we usually find
- Pressure at the unit below the model's window. The two ranges Sub-Zero publishes start at 20 psi and at 35 psi, and a supply hovering near the floor will not fill a mould.
- Mineral build-up on the inlet screen, narrowing the opening a little each season until a timed fill no longer delivers a full mould.
- A fill setting wrong for the unit — Sub-Zero lists an incorrect water fill setting among the causes of a misbehaving ice maker.
- A valve that opens slowly. It passes the seasonal checks and still leaves the mould short by the time the cycle closes.
Most often first. Order comes from what the visits keep turning up, not from a count.
Small is early, hollow is late
One shortage shows up in two ways. A mould that fills most of the way gives a cube that is solid but undersized; one that fills less gives a shell with a hollow middle. Reading them as a single fault at two depths keeps the search upstream, where the water comes from.
Measure it rather than judge it
Cube size drifts slowly and memory is a poor gauge. Empty the bin at a known hour and count what has appeared by the third hour — a figure beats an impression that the ice has looked thin lately.
Before you call
Two minutes, before anyone comes out
- Open the shut-off on the ice maker line as far as it goes.
- Fit a new cartridge; a clogged one throttles the fill as surely as a valve.
- Look behind the unit for a supply line pinched against the wall.
Stop there. If that has not settled it by the next morning, call Denver Sub-Zero Repair Experts on (720) 903-2603 and the rest of the water path gets traced with a meter.
When it needs somebody out: Ice Maker Repair in Denver.