Speed Queen Washer Error Code ALrn: Break-In Alarm
ALrn on a Quantum frontload coin or card Speed Queen washer is the break-in alarm. It shows when the door switch or the coin vault switch reports an opening the control did not expect. Make sure the vault is shut and latched and the washer door is closed, never bypass a switch, post an out-of-service sign if it stays and call us.
Medium: the washer will not run normally while the alarm is active, but the cause is often a latch or switch.
- Code
- ALrn
- Maker
- Speed Queen
- Equipment
- Coin & card laundry
- Applies to
- Quantum frontload (FLW1535C family) electronic control
What does Speed Queen error code ALrn mean?
Quantum frontload washers in a laundromat keep money in a coin vault, and the control guards it. It watches the washer door switch and the coin vault switch. When either reports an opening the control did not expect, such as the vault opened without the right sequence, it shows ALrn. For a laundromat owner it is a prompt to check the cash box and the door. It is not a water, drive or payment problem, so the wash cycle itself is not at issue. The manual lists a coin vault door that is not fully shut and latched, a door switch reporting an opening that did not happen, a worn wire on a door or vault switch, and a control that misreads the switch signals. A locked door stays unforced, and a door switch is never bypassed, since the door lock protects customers from an opening drum. If ALrn stays after the vault and door are verified, the machine should be taken out of service until a technician has looked at the switches and wiring.
Affected models and control systems
This applies to Speed Queen Quantum frontload coin and card washers (FLW1535C family) with the electronic control. Dryers with the single and stacked control show the same alarm as Alrm.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- ALrn shown on the display
- Washer will not start
- Coin vault door not fully latched
- Alarm returns after the door is shut
Possible causes
Listed in Speed Queen's documentation
- Coin vault door is not fully shut and latched
- Door switch reports an opening that did not happen
- A wire on a door or vault switch is worn
- The control misreads the switch signals
Other likely causes — what usually sits behind error code ALrn on this control. A technician confirms which one it is before any part is replaced.
- A vault cam worn so the door sits just off its latch
- Door switch contacts dirty with detergent residue
Safe checks before calling for service
- Make sure the coin vault door is shut and latched, and the washer door is closed.
- A locked door stays unforced, and a door switch is never bypassed.
- If the alarm stays, post an out-of-service sign.
- Call us to arrange a technician.
How a technician diagnoses error code ALrn
- Read the display and confirm the model and control.
- Check the vault door latch and its switch alignment.
- Inspect the washer door switch and lock wiring.
- Test the switches with a meter after powering down.
- Replace the defective switch or repair the wire only after the test, then confirm the alarm clears.
- The door lock and switch wiring connect to 120 V circuits near water.
- The vault security switch must be repaired without weakening cash protection.
How error code ALrn differs from similar codes
ALrn is the Quantum washer's break-in alarm. The same function on single and stacked dryers shows as Alrm.
Technical reference
- Document
- Commercial Frontload Washers Troubleshooting FLW1535C, Part No. 803402R2, March 2016, Section 4 Table 3 (pp. 18-20)
- Edition
- Part No. 803402R2, March 2016
- Models / control
- Quantum frontload (FLW1535C family) electronic control
- Section
- Section 4 Electronic Control Troubleshooting - 8. Error Code Listing, Table 3, printed pp. 18-20 (PDF pp. 20-22)
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Speed Queen coin & card laundry error codes
Is ALrn a water problem?
No. It watches the door and vault switches.
Can I override the door lock?
No. Never force a locked door or bypass a switch, since a drum may still be moving.
Does it mean someone broke in?
Not necessarily. A vault that is not latched, or a worn switch, often causes it.
Need help with Speed Queen error code ALrn?
A technician confirms the cause on site and gives you the price in writing before any work starts.