The short answer
When ice stops on a GRS refrigerator, the water supply and the freezer temperature account for most of it, and the ice maker itself for far less than owners expect. On this build these ship as compact units into small kitchens and second homes, and they are worked far harder than their duty rating expects, which is why the supply side comes first below. The first two checks need no tools and take minutes.
What you observe
- The mould holds a solid block of ice that will not release — Water arrives and the harvest fails, which points at the mould heater or the ejector.
- Ice is produced but slowly, and the cubes are hollow or small — Low water pressure, a restricted filter or a freezer that is not cold enough.
- NEAR MISS: water pools under the unit and there is no ice — That is a supply leak rather than an ice fault, and the water-leak page is the one you want.
Causes, most likely first on this build
- Freezer running too warm for the harvest cycle — Ranked first on this build: a compact cabinet packed full and opened often never reaches the temperature the harvest cycle needs, and this is the most common non-fault on this class.
- Water supply off, kinked, or the shut-off not fully open — Second: a kinked line behind the cabinet or a valve knocked during a clean stops the water before it reaches the machine.
- Ice maker module, thermostat or shut-off arm fault — Third: a shut-off arm in the raised position, or a failed module, stops the cycle without any other symptom.
- Clogged water filter or a frozen fill tube — Last: worth checking because a restricted fill mimics a failed ice maker exactly.
Check in this order, and why
- Look in the mould: dry, full of water, or a solid block — Each of the three answers sends you down a different branch, so look before you do anything else.
- Check the filter age and the fill tube for ice — A restricted fill and a failed ice maker look identical from the front.
- Put a glass of water with a thermometer in the freezer overnight — A freezer holds food safely at 0 °F (−18 °C) or below, and the harvest cycle needs it that cold too.
What an owner can safely check
- Open the supply valve fully and straighten the line behind the cabinet — Pull the unit out gently, look for kinks where it was pushed back, and confirm the tap is fully open.
Tools: torchAbout 15 min
- Replace the water filter and run several litres through the dispenser — Flushing clears the air that stops a new filter delivering full flow.
Tools: replacement filter, jugAbout 20 min
- Check the shut-off arm or paddle is in the down position — A bag of frozen food leaning on it stops production with nothing broken.
About 5 min
- STOP HERE if the next step needs a meter on the inlet valve or the ice maker out — That is where an owner check ends and a service call begins.
Before you open anything
Safety
Switch off the water supply before disturbing any line, and unplug the refrigerator or switch off its breaker before removing a panel, because a capacitor can hold a charge after the power is off. Never thaw a frozen fill tube with anything hotter than warm water, and never with a naked flame near the cabinet. Do not force the ejector arm by hand: it is geared, and forcing it strips the drive.
When to call a technician
Call once the supply is open, the filter is fresh and the freezer holds temperature and the mould is still dry, because the next check is a meter on the inlet valve. Call straight away if you find water dripping anywhere along the supply line, because the line is under constant pressure and a slow drip does not stay slow. Parts for a direct import come from the seller rather than a service network, so confirm the part can actually be had before paying for a diagnosis that ends in a back-order.
Nearest pages of this class
What this page does not cover
This page covers the GRS refrigerator as a class rather than one family or model line. Filter part numbers, ice maker module variants, fill tube routing and the supply fittings used on individual installations are deliberately not here. Where a family or model page exists for your unit, it is the more specific answer and the one to read first; the nearest pages of this class are linked just above.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
