EPOS cash drawer stuck? Fix it now

Last updated: 11 April 2026

Your EPOS cash drawer won’t open during the Friday night rush, and you’ve got a queue of punters waiting to pay. This isn’t just frustrating—it’s costing you money and staff morale in real time. A jammed or unresponsive EPOS cash drawer is one of the most common technical failures in UK pubs, yet most landlords don’t know the difference between a hardware fault, a software glitch, and a simple operator error that takes 30 seconds to fix. This guide walks you through the exact troubleshooting steps I’ve used running Teal Farm Pub in Washington, Tyne & Wear, where managing peak-time transactions across multiple tills means cash drawer reliability isn’t optional—it’s survival. You’ll learn what to check first, when to force open a drawer safely, and exactly when to call your EPOS provider rather than waste two hours on a problem that needs a technician.

Why Your Cash Drawer Won’t Open

A cash drawer failure looks simple from the front—press the button, nothing happens. What’s actually happening behind the scenes has multiple possible causes, and diagnosing the right one is the difference between a five-minute fix and a two-hour nightmare.

The most common cause of an EPOS cash drawer not opening is a loose power cable or USB connection between the cash drawer and the EPOS terminal. This sounds obvious, but I’ve seen it happen in at least half the cases where a landlord calls me panicking about a broken till. The drawer solenoid (the electromagnetic component that releases the drawer lock) needs constant power. If the connection is loose by even a millimetre, the drawer won’t respond to the opening command from your EPOS software, even though the terminal itself is working fine.

The second most common issue is that the drawer is mechanically jammed. A receipt paper feed has stuck, a coin is wedged in the mechanism, or the drawer itself wasn’t fully closed the last time someone used it. This feels identical to an electrical failure from a user perspective—you press the button and nothing happens—but the solution is completely different.

Third: the drawer solenoid has failed electrically. This is an actual hardware fault. The solenoid is a small electromagnet that retracts when it receives a signal from the EPOS terminal. When it fails, no amount of restarting software will fix it. You’ll need replacement hardware.

Fourth, much less common: the EPOS software itself has crashed or lost connection to the cash drawer driver. This usually happens after a system update or if the terminal has been running continuously for weeks without a restart. The terminal is responsive, but the cash drawer subsystem isn’t receiving commands.

Step-by-Step Troubleshooting

Follow this sequence exactly. Don’t skip steps, and don’t move to the next one until you’ve completed the current step. This is the order I use at Teal Farm when a drawer fails during service.

Step 1: Check the Physical Connection

Turn off the EPOS terminal completely. Walk behind or to the side of the till and visually inspect the power cable and any USB cables running from the EPOS terminal to the cash drawer. Look for:

• A loose or partially disconnected power plug on the drawer itself
• A USB cable that’s been pulled slightly out of the port
• Visible wear, fraying, or damage to the cable jacket
• Any cable that’s been trapped under a monitor or device, creating tension

If you find a loose connection, reseat it firmly. Push the connector all the way in until you feel or hear it click. Turn the terminal back on and test the drawer.

Step 2: Restart the EPOS Terminal

A soft restart solves roughly 40% of cash drawer issues. Shut down the EPOS software cleanly—don’t just force power off—and restart the terminal completely. This clears the drawer driver from memory and re-initialises the connection to the hardware.

If your terminal doesn’t have a clean shutdown option within the EPOS software, use the operating system shutdown (Windows or iPad). Wait 30 seconds, then power back on.

Test the drawer button again.

Step 3: Check if the Drawer is Physically Jammed

Open the terminal’s cash drawer using the mechanical override key (this came with your till or is stored in a locked box in your office). If your system doesn’t have a mechanical override, contact your EPOS provider immediately—your drawer shouldn’t be without one.

Once open, visually inspect inside:

• Is there a receipt wedged in the paper guides?
• Is a coin lodged in the locking mechanism or underneath the drawer base?
• Is the drawer sitting completely flat, or is one corner raised?

Remove any obstructions. Close the drawer gently by hand until it clicks into place. Test the electronic button again.

Step 4: Test the Drawer Button from the EPOS Software

Most EPOS systems have a test function buried in settings or hardware diagnostics. Log into your EPOS admin panel, navigate to hardware settings or system diagnostics, and find the cash drawer test function. When you activate it, you should hear a click from the solenoid and the drawer should open slightly.

If the drawer opens from the software test but not from a normal transaction, the issue is in how your EPOS is configured to trigger the drawer. Contact your provider’s support team with this specific detail.

If the drawer does not open even from the software test, the fault is hardware. Move to the next step.

Step 5: Check for Thermal Printer or Scale Conflicts

Some EPOS systems route the cash drawer signal through the thermal receipt printer or other connected hardware. If your thermal printer is offline, overheating, or has an error state, it can block the drawer command from executing even though the drawer hardware is fine.

Check your printer status in the EPOS software. Clear any error messages. Unplug the printer from power for 10 seconds, then plug it back in and let it restart.

Test the drawer again.

Hardware vs Software Faults

A software fault means your EPOS system can’t communicate with the drawer; a hardware fault means the drawer components themselves are broken. This distinction matters because it determines whether you can work around the problem temporarily or whether you’re stuck.

Signs of a Software/Connection Issue

• The EPOS terminal is responsive and working normally for transactions
• The drawer test function in EPOS settings fails to open the drawer
• The terminal responds to other peripherals (printer, scanner) normally
• The issue started after a system update or configuration change
• Restarting the terminal fixes the problem, but only temporarily

In these cases, your drawer hardware is probably fine. The issue is the driver software or the connection protocol. Contact your EPOS provider’s support line with this information—they can often push a software fix or reconnect the drawer remotely.

Signs of a Hardware Fault

• The drawer test in EPOS settings produces no response at all
• You hear no click or mechanical sound from the drawer when testing
• The power and connection cables are secure, but the drawer still won’t respond
• The physical drawer can be opened manually with the override key, but won’t open electronically
• You can see visible damage inside the drawer mechanism (broken solenoid, corroded connectors)

Hardware faults require a replacement or repair. Some EPOS providers offer next-business-day hardware replacement for active customers. Others require you to contact the drawer manufacturer directly or use a local repair service.

Emergency Access to Your Cash

If your cash drawer won’t open and you need to access money for change or a bank drop, use the mechanical override key. This is exactly what it’s designed for, and there’s no penalty for using it during a fault.

Every EPOS drawer comes with a mechanical override key. It’s usually a small silver or brass key. If you can’t find yours:

• Check the original EPOS setup documentation or your invoice
• Contact your EPOS provider—they hold spare keys and can often arrange next-day delivery
• In an absolute emergency, a qualified locksmith can open a drawer, but expect to pay £50–£100 for a callout

Do not attempt to pry the drawer open with a screwdriver or force it—you’ll damage the solenoid release mechanism and turn a £50 software fix into a £250–£400 hardware replacement.

Once you’ve accessed your cash, continue troubleshooting from Step 1 above or contact your EPOS support team. Using the mechanical override buys you time, but it’s not a permanent solution.

Preventing Drawer Failures

Most EPOS cash drawer failures are preventable. After running multiple till systems at Teal Farm—from basic single-drawer setups to complex multi-terminal configurations—I’ve found that failures cluster around neglect of three things: power stability, physical maintenance, and regular restarts.

Install Proper Power Management

Cash drawer solenoids are sensitive to voltage fluctuations. If your pub’s electrical wiring is old, or if you’re running too many devices from a single outlet, power spikes and sags can damage the drawer’s electronic components over time.

Use a dedicated surge-protected power strip for your EPOS terminal and cash drawer. Never run the till from the same outlet as a microwave, fryer, or other high-draw kitchen equipment. If your outlet is more than 10 metres from the main fusebox, consider having a dedicated line installed—this costs £150–£300 but saves you a drawer replacement.

Clean the Drawer Monthly

Once a month, use the mechanical override key to open the drawer fully. Vacuuate out any dust, receipt fragments, or coins. Check for corrosion inside the solenoid connector (a green or white crystalline deposit). Wipe the connector with a dry cloth. Close the drawer and test it electronically.

This takes five minutes and prevents 90% of mechanical jams.

Restart Your Terminal Weekly

Don’t leave your EPOS running 24/7 for weeks. Even cloud-based systems benefit from a weekly full restart. This clears memory, refreshes driver connections, and pushes any pending software updates. Schedule this for a quiet period—Monday morning before opening is ideal.

A weekly restart prevents the slow degradation of hardware communication that eventually causes drawer failures.

Check Cable Integrity Every Quarter

Every three months, visually inspect the power and USB cables between your terminal and cash drawer. Look for wear on the outer jacket, kinks, or crushed areas. If a cable looks damaged, replace it immediately—they cost £10–£20 and are the easiest preventive fix you can do.

When to Replace Your Cash Drawer

Not every cash drawer problem is worth fixing. If your drawer is more than five years old and fails, replacement is usually cheaper and faster than repair. Most EPOS providers offer drawer units at £180–£350, and they install in 10 minutes.

Consider replacement if:

• The solenoid has failed (confirmed by your provider or a technician)
• The drawer is visibly corroded or has physical damage to the mechanism
• Your EPOS provider says repair will take more than 48 hours
• This is the third failure in 12 months (indicates an underlying problem with power or integration)
• Your EPOS provider no longer stocks parts for your drawer model

When you do replace it, ensure the new drawer is compatible with your EPOS terminal model. Most modern systems use USB or Ethernet connections, but older systems might need a parallel port or serial connection. Ask your provider before ordering.

If you’re replacing hardware anyway, it’s worth reviewing whether your current EPOS system still meets your needs. We’ve written detailed guides on whether to rent or buy EPOS systems, and the financial comparison matters more when you’re already buying new equipment.

A cash drawer failure costs you money every minute it’s broken—lost transactions, staff frustration, and wasted diagnostic time. But most failures are fixable in under an hour if you follow the troubleshooting sequence I’ve outlined here. The critical insight from running real pubs is this: always start with the physical connection and a restart before assuming the worst. I’ve seen landlords panic about broken hardware when the issue was simply a loose cable that took 20 seconds to reseat.

If you’re managing multiple EPOS terminals or planning to upgrade your system, understanding your current drawer’s reliability matters. Using a pub profit margin calculator helps you quantify the cost of downtime—even a single stuck drawer for two hours during a Friday night costs real money in lost sales and staff wages.

For broader EPOS selection and performance issues, our pub IT solutions guide covers system reliability, backup power planning, and redundancy options for venues that can’t afford till downtime.

For more information, visit pub profit margin calculator.

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For more information, visit pub staffing cost calculator.