Wascomat Coin Laundry Washer Error Code 10: Drum Not Drained
Code 10 on a coin-operated Wascomat washer means the water was still above the set level when a drain period ended. Check whether other washers drain slowly too. If only this one does, the drain valve or level system needs service.
Medium: the cycle stops until the drum drains, and the cause often sits in the building drain.
- Code
- Error code 10, DRUM NOT DRAINED
- Maker
- Wascomat
- Equipment
- Coin & card laundry
- Applies to
- Compass Control W-series washer-extractors (MCU motor control)
What does Wascomat error code 10 mean?
At the end of each drain period the Compass control looks at the level system. If the water is not below the set level, the cycle stops and the display shows ERROR 010 / DRUM NOT DRAINED. In a laundromat the building drain is often the cause, since many machines empty at once into the same pipes. The manual lists six causes: a blocked drain, a blocked level hose, a water drop in the level hose, a defective level control, restricted drain lines, and too many machines draining into narrow drain pipes. Its steps are to check the drain installation for free flow, clean the drain valve, blow through the level hose and check the level control in the service program. Which cause applies often shows in whether one washer or the whole row is affected.
Affected models and control systems
Coin-operated Wascomat washer-extractors W465H-W4300H, W475S-W4330S and W475N-W4330N with the Compass Control.
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
- ERROR 010 / DRUM NOT DRAINED shows after the drain step
- Water remains in the drum when the cycle stops
- Customers find wet laundry sitting in water
- Several washers drain slowly at the same time
Possible causes
Listed in Wascomat's documentation
- Blocked drain
- Blocked level hose
- Water drop in level hose
- Defective level control
- Restricted drain lines
- Too many machines draining into narrow drain pipes
Other likely causes — what usually sits behind error code 10 on this control. A technician confirms which one it is before any part is replaced.
- Socks, lint or coins caught in the drain valve of this one machine
- Suds from heavy detergent use that keep the level reading above the limit
Safe checks before calling for service
- Look at the drain trench or standpipe behind the washers for overflow or backed-up water.
- Check whether the washers next to it also drain slowly.
- Do not open the door while water remains in the drum.
- Put an out-of-service sign on the washer and tell us which neighbors were slow, then call us.
How a technician diagnoses error code 10
- Read the code and history to see how often it occurs.
- Check the drain installation for free flow, including the shared line.
- Clean the drain valve and confirm it opens fully.
- Blow through the level hose to clear blockages.
- Check the level control against the real water level in the service program.
- Report a building drain problem to the owner or plumber.
- A blocked or undersized building drain is plumbing work that a plumber should handle.
- Cleaning the drain valve and checking the level control involve working behind panels.
- Level values are set and read in the service program.
Technical reference
- Maker documentation
- Wascomat owner support
- Edition
- 438 9228-61/EN, 2011.08.25
- Models / control
- Compass Control W-series washer-extractors (MCU motor control)
- Section
- Troubleshooting, Description of error codes and causes (manual pp. 108-138)
- 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 Wascomat coin & card laundry error codes
Is the washer or the plumbing to blame?
If all washers drain slowly together, suspect the plumbing. If only one does, suspect the machine.
What if customers' clothes are soaked?
They need to be drained by a technician or by the attendant after the water is removed safely.
Can I run it with less detergent?
Less detergent helps if suds are the cause, but it won't fix a blocked drain.
Need help with Wascomat error code 10?
A technician confirms the cause on site and gives you the price in writing before any work starts.