By Shaz · Updated September 2026
Dolphin Pool Cleaner Cord Tangled? How to Fix & Prevent It
A tangled floating cable is the most annoying Dolphin fault — the robot's reach shrinks, corners stay dirty, and every session starts with wrestling a blue spiral. The cable twists because the robot turns in the same direction more than the other; the fix is part untwisting, part prevention.
Untwist it properly (once)
- Disconnect the cable from the power supply.
- Stretch the full length out on the lawn or deck in the sun for an hour — warmth relaxes the memory in the jacket.
- Working from the robot end, run the cable through your hand to the plug end, letting the twist spin out at the free end.
- Reconnect, and lay the cable in wide, loose loops beside the pool — never a tight coil.
Check the swivel
Most current Dolphins have a swivel joint in the cable that lets twist escape during the cycle. Hold the cable each side of the swivel and rotate: it should spin freely. A seized swivel (scale and grit are the usual cause) turns the anti-tangle cable into an ordinary one — soak the joint in warm water, work it free, or have the swivel section replaced.
Prevent the twist coming back
- Give it exactly enough cable. Uncoil roughly the pool length plus a couple of metres and keep the rest by the power supply. Excess floating cable is raw material for knots.
- Alternate the drop-in point occasionally, and place the power supply near the middle of the pool's long side so the robot's turning pattern balances out.
- Hang the cable straight after each cycle — over a fence rail or the caddy hook — so residual twist relaxes before the next run.
- Never yank the robot out by the cable. Use the cable only to bring the robot to the surface near the wall, then lift by the handle. Pulling the deadweight up by the cord stresses the swivel and the conductors.
A cable that tangles severely within a single cycle even after all this usually means a seized swivel or a cable that's taken a permanent set — both replaceable. See the parts guide for what's replaceable, and the troubleshooting hub for every other symptom.
Models in this guide:Browse all Dolphin models or see every comparison.