Symptoms
- Ice production is good some days, poor or absent other days
- No clear pattern to when it works
- Bin sometimes underfilled, sometimes fine
- No error codes or obvious symptoms otherwise
Likely causes
- CommonFluctuating household water pressurePressure that dips at certain times of day (like peak usage hours) can intermittently affect fill quality.
- CommonPartially clogged filter nearing failureA filter close to fully clogging can pass adequate water sometimes and not others.
- PossibleFreezer temperature fluctuating near the thresholdIf temperature hovers right around the point needed for ice making, small swings can cause inconsistent cycles.
- PossibleLoose wiring connector to the ice makerA connection that's not fully seated can work intermittently based on vibration or temperature.
- Less commonAging control module with intermittent faultsElectronic components can develop intermittent faults before failing completely.
What to do
- Replace the water filter as a first step, since marginal filters often cause exactly this kind of inconsistency.
- Log the freezer temperature over a few days with an independent thermometer to check for swings.
- Check the ice maker's wiring connector for a snug fit.
- Note if problems correlate with specific times of day, which could point to household water pressure changes.
- Keep a simple log of good and bad days for a week to help spot patterns before calling for service.
- If the pattern doesn't point to an obvious cause, a technician can run diagnostic tests over time or swap suspect components.
Tools and parts
- Thermometer
- Notebook or notes app
Refrigerator water filterSearch: “refrigerator water filter replacement”
When to call a pro
If a pattern doesn't emerge and simple fixes don't help, an appliance technician can perform more thorough diagnostics on the module and wiring.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.