Electric Roller Shutter Won't Go Down? What to Check First

It's the end of a long trade day, your staff are ready to lock up and go home, and the electric roller shutter refuses to budge. A roller shutter stuck open leaves your stock, premises and insurance cover on the line. Before calling out an emergency engineer, run through this quick, safe checklist — you might resolve it in two minutes and get the building locked up safely.

Check 1: Is There Power to the Unit?

It sounds basic, but power disruptions are the single most common reason a shutter suddenly stops responding.

• Check the key switch / rocker switch. Does it feel loose or broken?
• Inspect the consumer unit (fuse box). Check if the circuit breaker powering the shutter has tripped. Reset it once. If it trips again immediately, do not reset it a second time — that indicates an active electrical fault or short circuit.
• Look for an isolation switch. Make sure nobody accidentally turned off the local emergency isolator near the door.

Check 2: Inspect the Guide Rails for Obstructions

Roller shutters run inside side channels (guides). If something is wedged inside the channel, the safety mechanism or physical friction will stop the curtain descending.

• Take a torch and look up and down both side guide rails.
• Look for lodged debris, bent metal, or stray packaging tape.
• Caution: never place your fingers inside the guide rails while the power is connected.

Check 3: Safety Edge and Photocell Obstructions

If your commercial shutter is fitted with an automatic bottom-rail safety edge or safety photocells across the opening, any signal interruption will prevent the shutter closing, to avoid a crushing hazard.

• Look at the bottom bar of the shutter — is it resting unevenly on something?
• Check the floor beneath the shutter path to make sure no small boxes, mats or rubbish are cutting off the optical beam near the base.

Check 4: Using the Emergency Manual Override

If the power is completely out across your building or the motor switch has failed, you may need the emergency manual override to secure the building for the night.

• Locate the hand crank or manual haul chain — usually near the motor head inside the building.
• Engage the crank mechanism. Insert the hook handle into the eyelet, or switch the manual release lever, depending on your shutter design.
• Wind the shutter down slowly. It takes physical effort — wind smoothly until the curtain rests flush with the floor, then secure your manual bottom locks or floor shoots.

Here's what the process looks like in practice:

Video: "How to use a Manual Override on a Roller Shutter Door" — Security Direct Products Ltd.

When Basic Checks Don't Work

If power is present, the tracks are clear, and the shutter still hums without moving, jams at an angle, or produces a harsh grinding noise, stop operating it immediately. Continuing to press the "Down" button can cause the curtain to derail from the barrel overhead, turning a simple motor or brake issue into a major structural fix.

Locked Out or Stuck Open? Get Fast 24/7 Support

When you can't lock up, every minute counts — you shouldn't have to stay up all night guarding an open shopfront. Our expert repair team offers fast 24/7 emergency callouts for commercial roller shutters and industrial doors, arriving fully equipped to diagnose electrical faults, free jammed curtains, replace faulty switches, or manually secure your premises safely. See our roller shutter repairs page for fault diagnosis and repair costs, our security roller shutters page if you need a new one, or read our guide on what to do when any commercial door fails.

Common Questions

Roller Shutter FAQs

Why won't my electric roller shutter go down?

The most common causes are a tripped circuit breaker or faulty switch, debris jammed in the guide rails, an obstructed safety edge or photocell beam, or a motor and brake fault. Working through power, tracks and safety sensors in order resolves most cases.

Is it safe to use the manual override on a roller shutter?

Yes, if the crank or chain moves smoothly. Locate the hand crank or haul chain near the motor head, engage it, and wind steadily until the curtain rests flush with the floor. Never force an override that feels locked tight.

My roller shutter is humming but not moving — what does that mean?

That's a sign of a motor, brake or track fault. Stop pressing the button immediately — continuing can derail the curtain from the barrel overhead and turn a simple repair into a major structural fix.

How quickly can BJM Door Solutions respond to a stuck shutter in Manchester?

We run a 24/7 emergency callout line across Greater Manchester for commercial roller shutters and industrial doors. Call 07799446938 any time, day or night.