Huebsch Quantum Frontload Washer Error Code E rr: Coin Error
E rr on a Huebsch Quantum frontload washer is a coin error: the control saw an invalid coin pulse, or the coin sensor is not working. Look into the coin slot for a bent coin, a token or debris without forcing anything in, and try a single clean coin. If the washer keeps rejecting coins, mark it out of order and call us for a coin drop check.
Medium: the wash circuits are fine, but the machine cannot take payment reliably.
What does Huebsch error code E rr mean?
A coin-operated Quantum frontload counts coins by reading a pulse from the coin drop each time a coin passes the sensor. The control expects a clean, valid pulse. If the pulse it receives is invalid, or if the coin sensor is not working at all, it shows "E rr", a coin error. Customers drop coins and the washer does not credit them, or credits them oddly. The cause sits in the coin acceptor path and not in the wash circuits, so the machine itself may be able to wash fine once credited. The manual's checklist is coins or debris jammed in the coin slide, the cleanliness and alignment of the coin sensor, the wiring from the coin drop to the control, and the control's coin input. Because every customer meets the coin slot first, a jam there is the easiest cause to find and the one most worth ruling out before anything else.
Affected models and control systems
This page applies to Huebsch Quantum frontload washers in the FLW1535C family with the electronic control and a coin drop. Washers without coin operation do not use this message.
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
- Coins dropped in the slot are not credited
- The display shows "E rr" after a coin is inserted
- The washer credits the wrong amount or counts erratically
Possible causes
Listed in Huebsch's documentation
- Coins or debris jammed in the coin slide
- Coin sensor dirty or out of alignment
- Damaged wiring from the coin drop to the control
- Coin input on the control not reading
Other likely causes — what usually sits behind error code E rr on this control. A technician confirms which one it is before any part is replaced.
- A bent coin or foreign token that sticks in the slide and blocks the next one
- Sticky residue from spilled detergent that clouds the coin sensor
Safe checks before calling for service
- Look into the coin slot for a bent coin, a token or debris, without forcing anything in.
- Try a single clean quarter, if your machine takes them, and see what the display does.
- Mark the washer out of order if it keeps rejecting coins.
- Call us for a coin drop check, and tell us what was in the slot and how many coins were lost.
How a technician diagnoses error code E rr
- Read the code and ask how the coin problem showed itself.
- Open the coin drop and clear the slide of coins and debris.
- Clean and align the coin sensor.
- Check the wiring from the coin drop to the control.
- Test the coin input with a known good coin, and replace the sensor or drop only after the test fails.
- The coin drop and its cash box need to be opened with the machine's keys and a cash-handling procedure.
- Wiring from the coin drop runs to the live control, so testing it means opening the control.
- Judging a sensor pulse takes a test coin and a meter, not guesswork.
How error code E rr differs from similar codes
E rr belongs to the coin path of the Quantum frontload. It does not mean any wash circuit has failed.
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 Huebsch washer error codes
Can I keep using the washer with E rr?
It may wash normally once started, but it will keep refusing coins until the coin path is fixed.
Will a different coin help?
Try one clean coin of the right type. If it is rejected too, the sensor or drop needs attention.
Is the machine out of order?
Mark it that way so customers do not lose money while it waits for repair.
Need help with Huebsch error code E rr?
A technician confirms the cause on site and gives you the price in writing before any work starts.