The short answer
On this platform the leak is usually on the supply hoses: they are pressurised around the clock, and a perished washer or a split puts water down whether the machine is running or not. What puts it first on this machine: it runs a long duty cycle in a warm, busy room. The order below follows that ranking rather than a generic list.
What you observe
- Water at the back of the machine that arrives whether or not a cycle is running — Continuous arrival is the signature of mains pressure and of nothing else here.
- Water appears only during the drain step, and at the standpipe rather than under the machine — Timing plus location puts the fault at the drain connection.
- Water at the front of the machine that appears only while it is running — Front and running-only puts the fault at the door or the dispenser.
- NEAR MISS — water appears only after the machine has finished — That is usually a drum that has not drained fully rather than a leak, and it belongs on the drainage page.
Causes, most likely first on this platform
- A supply hose, washer or coupling that has failed — The inlet hoses are under mains pressure every minute of the day, whether or not the machine is running. A perished rubber washer or a hairline split puts water down continuously, and it is the one leak on this list that never pauses. It leads on this platform: it runs a long duty cycle in a warm, busy room.
- A drain hose connection that overflows or backs up — A drain hose loose in a standpipe, or a standpipe that cannot take the flow, sends water over the top of the pipe at exactly the moment the machine pumps. It appears during the drain step only, which is the clue that places it. Second, because it runs a long duty cycle in a warm, busy room.
- A door seal or dispenser leaking during the cycle — A front-loading door seal collects hair, grit and coins in its fold; a dispenser drawer clogs with detergent residue. Either sends water out of the front of the machine at a specific point in the cycle. Third rather than higher, because the two causes above it are commoner.
Check in this order, and why
- Dry the floor, run nothing for an hour and look again behind the machine — A wet floor with an idle machine names the supply immediately, and it costs an hour of doing nothing.
- Watch the standpipe through a drain step — It names the fault on sight and needs no tools at all.
- Fold back the door seal and inspect the whole fold, then pull the dispenser drawer — Both are open to inspection with no tools, and both hide their debris from a casual look.
What an owner can safely check
- Shut both taps, dry the couplings and check each rubber washer — Hand-tight plus a nip with pliers is enough on a hose coupling; over-tightening splits the fitting.
Tools: pliers, towelsAbout 25 min
- STOP at the first step needing a meter on live terminals or a sealed panel off — That is where owner checks end. Write down what came back clean: a technician who knows that spends the visit fixing rather than repeating it.
Before you open anything
Safety
Shut both supply taps and switch the machine off at its breaker before touching a hose or a panel — water and a live machine is the hazard here, and a capacitor can hold a charge after the power is off. Dry the floor as you work: on a laundry floor the slip is the likelier injury than the shock. A machine full of water is a two-person move; drain it at the pump filter before pulling it out.
When to call a technician
Call when the water is coming from inside the cabinet rather than from a hose or a fitting, and call immediately if it arrives while the machine is idle — an idle leak is on the pressurised supply and it does not stop on its own. The other line is water at the drum seal on a front-loading machine, which is a seal replacement rather than an adjustment.
Nearest pages of this class
What this page does not cover
This is generalized information for the Primus washer as a class, not for one family or model line. Where a family- or model-specific page exists for your unit it is the more specific answer, it is linked among the pages above, and it supersedes this one wherever the two differ. Not covered here: part numbers, hose thread sizes, seal specifications and the disassembly order, all of which differ by family and belong on the page for that family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
