MEIKO Commercial Dishwasher Error Code ERR 211: Boiler Sensor Interrupted
ERR 211 on the UPster U 400 M2 display reads Boiler temperature sensor interruption. The manual lists a defective sensor, an incorrect position, or a plug contact that is not connected properly, and says it is not possible to continue working.
High: the control has no boiler temperature reading, so the machine stops until the circuit is repaired.
- Code
- ERR 211
- Maker
- MEIKO
- Equipment
- Dish machines
- Applies to
- Meiko UPster U 400 M2 glass and dishwasher, M001DWUC10M2-10
What does MEIKO error code ERR 211 mean?
The control reads the boiler temperature sensor continuously. If the circuit is open, as if the sensor wire were cut or unplugged, the reading goes out of range and the control shows ERR 211, Boiler temperature sensor interruption. Without a valid boiler temperature the machine cannot heat or rinse correctly, so it stops. The manual lists three causes: a defective sensor, a sensor in the wrong position, and a plug contact that is not connected properly. It states that it is not possible to continue working and that a service technician is to be called. The paired code is ERR 210, which is the opposite reading, a short circuit. An open circuit often comes from a connection and not the sensor itself, which is why the plug contact is on the manual's list. The display reads Boiler temperature sensor interruption.
Affected models and control systems
This code is listed for the Meiko UPster U 400 M2 glass and dishwasher, type M001DWUC10M2-10, in section 9.6.1 Messages (the ERR table on printed pp. 34-35).
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
- ERR 211 with the text Boiler temperature sensor interruption
- Machine stopped and will not heat
- Boiler temperature missing or reading nonsense
Possible causes
Likely causes — what usually sits behind error code ERR 211 on this control. A technician confirms which one it is before any part is replaced.
- Sensor defective
- Sensor position incorrect
- Plug contact not connected properly
- Corroded or bent pin in the sensor plug after exposure to steam
- Sensor lead pulled or broken at a bend
- Loose connection on the control side of the sensor circuit
Safe checks before calling for service
- Switch the machine off and on again once to see whether the reading returns.
- Do not open panels or pull plugs yourself.
- Wipe up any water around the machine, since moisture can reach connectors.
- Note when ERR 211 appeared and whether the machine was moved or cleaned recently, for the service call.
How a technician diagnoses error code ERR 211
- Read the history and confirm ERR 211, noting whether ERR 210 has also appeared.
- Check the sensor plug for tight seating, corrosion and bent pins.
- Measure the sensor resistance and the continuity of its lead.
- Check the sensor position in its pocket.
- Replace the sensor, lead or plug as the test indicates and run a heat-up.
- Checking plugs and leads means opening panels on a machine with live 208-240 V and wet surroundings.
- The sensor sits in a boiler that can release hot water.
- Confirming continuity and resistance needs a meter and the sensor specification.
Technical reference
- Document
- UPster U 400 M2 Glass- and dishwasher - Original operating instructions (type M001DWUC10M2-10)
- Edition
- 9760441 / Valid from: 2018-02 / Update: 2026-06
- Models / control
- Meiko UPster U 400 M2 glass and dishwasher, M001DWUC10M2-10
- Section
- 9.6.1 Messages: INFO table printed p. 33, ERR table pp. 34-35 (of 50)
- 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 MEIKO dish machine error codes
Can I keep working with ERR 211?
No. The manual says it is not possible to continue working. Call a service technician.
Could it just be a loose plug?
Yes. The manual lists plug contact not connected properly as a cause, but opening the machine to check it is a technician job.
Is ERR 211 the same as ERR 210?
No. 210 is a short-circuit reading, 211 is an open or interrupted sensor circuit.
Need help with MEIKO error code ERR 211?
A technician confirms the cause on site and gives you the price in writing before any work starts.