Eversys Coffee Machine Error Code W-059: Right Milk Tank Too Warm
W-059 says the right milk tank temperature is too high. Throw away milk that has been out of the cold, refill the right tank only with chilled milk, and seat the tank and lid. If W-059 returns with cold milk, call us.
Medium: milk from that tank is limited for safety; other drinks continue.
- Code
- W-059
- Maker
- Eversys
- Equipment
- Super-automatic coffee
- Applies to
- Cameo (W-xxx warning messages)
What does Eversys error code W-059 mean?
The right milk tank on the Cameo has its own temperature check, separate from the left. The control reads the temperature all the time and compares it with an allowed level for milk safety. When the milk has warmed above that level, the control shows W-059, and milk drinks from the right tank may be limited. The owner's guide says to refill only with chilled milk. Most cases trace back to milk that was warm when it went in. If the milk was cold, then the tank itself may not be cooling properly: it may be seated badly, its lid may be off, or airflow around the machine may be blocked so that heat has nowhere to go. A reading that is wrong because of the right tank's sensor is possible, though it is the last thing we suspect. The control has no way to tell warm milk from a sensor that reports high, so a thermometer reading of the milk decides. Keeping the area around the machine free so air can move is a simple operator step that often helps. If the warning keeps coming back with cold milk, call us and give us the details. The display text is W-059.
Affected models and control systems
This applies to the Eversys Cameo with W-xxx warning messages on machines with two milk tanks. W-058 is the matching warning for the left tank.
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
- Milk drinks from the right tank limited
- Warning on the display
- Right tank feels warm to the touch
- Warning returns shortly after refilling
Possible causes
Listed in Eversys's documentation
- Warm milk added to the right tank
- Right tank not cooling or not seated
- Failed right tank temperature sensor
- Poor airflow around the machine
Other likely causes — what usually sits behind error code W-059 on this control. A technician confirms which one it is before any part is replaced.
- A right-hand side vent pushed against a wall or shelf that traps warm air
- A tank gasket that does not seal and lets room air in
Safe checks before calling for service
- Throw away milk that has been out of the cold and refill the right tank only with chilled milk.
- Seat the tank and lid properly.
- Keep the area around the machine free so air can move.
- If W-059 returns with cold milk, call us and tell us the room temperature near the machine.
How a technician diagnoses error code W-059
- Measure the milk temperature in the right tank with a reference thermometer.
- Inspect the tank seating, cooling path and airflow.
- Read the right tank sensor and compare it with the thermometer.
- Check the cooling system operation.
- Replace the sensor or repair the cooling that fails the test.
- If cold milk still triggers the warning, the tank cooling or its sensor has to be tested inside the housing.
- The cooling circuit runs on mains-powered parts.
- Milk above the allowed temperature is a food-safety concern, so the reading must be checked with a thermometer.
Technical reference
- Document
- Eversys eSupport: Operator warning messages for Cameo (W-XXX)
- Models / control
- Cameo (W-xxx warning messages)
- Section
- Web page table of W-numbers, Infos messages and Explanations / Remedies (no page numbers)
- 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 Eversys super-automatic coffee error codes
Is W-059 the same as W-058?
They are the same check on different tanks. W-059 is the right tank and W-058 is the left.
Why does it return after refilling?
The milk may have been warm, or the tank cooling or airflow is limited.
Can I serve milk from the other tank?
Usually yes. Only the affected tank is limited.
Need help with Eversys error code W-059?
A technician confirms the cause on site and gives you the price in writing before any work starts.