How to Fix / Troubleshooting

Safety first: Do not repeatedly reset the breaker. Unplug the machine and keep it unplugged until the fault is identified.

Visual inspection: Check the mains cable and plug for visible damage or burn marks.
Check for moisture: Inspect around the motor and PCB for signs of water leaks. Allow the unit to dry completely if moisture is present.
Isolate components: If you are competent, disconnect motors (vacuum, pump, brush) one at a time and test with a multimeter for low resistance or direct short to earth.
Replace faulty part: Any component showing a short circuit or visible burn damage should be replaced with the correct Numatic part.
Professional testing: If unsure, have a qualified technician perform insulation and continuity tests.

Machine trips household circuit breaker or blows fuse when switched on.

Possible Causes