Slot Machine Reset Button – What Happens When A Slot Is Reset?
Slot machines, whether you play them online or in a physical casino, are complex electronic games designed to operate independently and produce results based on Random Number Generators (RNGs).
Occasionally, these machines may need to be restarted or reset. Understanding why a reset happens and what it usually involves can help you grasp how slot games operate behind the scenes.
This blog explains what a reset button does, how a machine may respond, and the role of trained personnel in maintaining game functionality.
What Does A Slot Machine Reset Button Do?
A slot machine’s reset button is a feature intended for maintenance and troubleshooting, rather than altering the game itself. When a machine experiences an error—such as a frozen screen, a misread coin, or a system glitch—the button allows authorised personnel to restart the device. This action does not change the underlying software, the game rules, or the theoretical Return to Player (RTP) rate.
For online slots, the concept is similar, but digital. If a server error occurs or the game fails to load correctly, the platform can reload the software or session without altering the programmed payout percentages.
Using a reset button generally:
- Clears minor technical faults.
- Reboots the machine, so it can resume normal operation.
- Ensures peripheral components, like coin or ticket readers, return to functional status.
It does not modify the RTP, hit frequency, or the behaviour of the RNG, which determines outcomes independently for each spin.
What Happens When A Slot Machine Is Reset?
When a slot machine is reset, a series of processes may take place, depending on the type of reset and the issue encountered.
- Error clearance: The machine may display an error code, which is usually removed once the reset completes. This allows the device to operate without technical interruptions.
 - System reboot: After pressing the reset button or using an authorised key, the machine may restart its software and hardware. This reboot ensures the game interface and peripheral components, such as bill validators or ticket printers, are functioning correctly.
 - Diagnostics: In some cases, a trained technician may perform diagnostics following a reset to check that all systems are functioning, but this does not influence the outcomes of spins.
For online slots, resetting usually involves restarting the game or session on the server. This does not alter programmed payout percentages or affect the RNG. The machine’s software maintains the same probabilities and mathematical structure as before.
It is important to understand that the RTP displayed in the game or on the paytable is a theoretical average based on long-term play and does not guarantee individual results. A reset, in either online or in-person machines, does not change these programmed percentages.
Do Casinos Reset Slot Machines?
Casinos can reset slot machines, but only for technical reasons. These resets are performed by trained personnel or technicians who have access to authorised keys and procedures. The purpose is to maintain operational efficiency, not to alter game outcomes.
Physical slot machines may be reset to:
- Resolve hardware issues, such as jammed coin mechanisms.
- Clear error codes or software glitches.
- Reboot after updates or maintenance approved under UKGC regulations.
Online casinos operate differently but similarly: software can be reloaded or sessions refreshed to correct technical faults, but the core game logic remains unchanged.
All UK-regulated machines, whether online or in casinos, are tested and certified to ensure fairness and compliance with the law. This means that a reset cannot be used to manipulate payout potential or RNG behaviour. Any inspection, maintenance, or reset is carried out under controlled and audited conditions to uphold these standards.
*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to these slot games are subject to change at any time. Game features mentioned may not be available in some jurisdiction.
**The information provided in this blog is intended for educational purposes and should not be construed as betting advice or a guarantee of success. Always gamble responsibly.