MEIKO Commercial Dishwasher Error Code ERR 206: Wash Time Increase
ERR 206 on the UPster U 400 M2 display reads Wash time increase, meaning the program was extended because the boiler was not ready for the final rinse in time. The manual says to acknowledge the message and keep working, and to call a technician if it happens often.
Medium: the machine keeps running but cycles are extended, and repeats point to a heating or sensing problem.
- Code
- ERR 206
- Maker
- MEIKO
- Equipment
- Dish machines
- Applies to
- Meiko UPster U 400 M2 glass and dishwasher, M001DWUC10M2-10
What does MEIKO error code ERR 206 mean?
The UPster U 400 M2 will not start the final rinse until the boiler holds enough hot water at the right temperature. If the boiler is not ready when the wash phase ends, the control adds extra wash time and shows ERR 206, Wash time increase, so each cycle runs longer than normal. The manual lists the causes as a boiler that is not ready (temperature or level), defective boiler heating, a defective temperature sensor, boiler protection having triggered, and no signal from the I/O board. It says to acknowledge the message and that continued work is possible, and to call a service technician if it occurs frequently. A single appearance after a very busy period can simply mean the boiler was still heating, while repeats suggest a real heating or sensing problem. The display reads Wash time increase.
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 206 with the text Wash time increase
- Cycles running longer than normal
- Final rinse arriving late or water not hot enough
Possible causes
Likely causes — what usually sits behind error code ERR 206 on this control. A technician confirms which one it is before any part is replaced.
- Boiler not ready (temperature or level)
- Boiler heating defective
- Temperature sensor defective
- Boiler protection triggered
- No signal from the I/O board
- Inlet water colder than usual, so the boiler takes longer to reach temperature
- Heavy back-to-back loads drawing the boiler down faster than it recovers
- Scale on the heating element slowing the heat-up
Safe checks before calling for service
- Press the key to acknowledge the message, as the manual says.
- Let the machine finish its cycle and keep working if it runs normally.
- Allow a short pause between loads if the machine has been running nonstop.
- If ERR 206 appears often, note how many cycles apart it happens and whether the rinse water feels hot, for the service call.
How a technician diagnoses error code ERR 206
- Read the message history and see how often ERR 206 occurs.
- Measure boiler temperature against the displayed value with a reference thermometer.
- Test the boiler heating element and its contactor.
- Check the temperature sensor resistance against its specification.
- Check the boiler protection device and the I/O board signal.
- Replace the failed part and time a full heat-up.
- Heating element and contactor tests mean working on live 208-240 V wiring.
- A tripped boiler protection device points to an overheating or wiring issue that should be traced by a technician.
- Descaling or replacing a boiler heater involves hot water and pressurized parts.
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 after ERR 206?
Yes. The manual says to acknowledge the message and that continued work is possible.
When should I call a technician?
The manual says to call if it occurs frequently.
Does ERR 206 mean the rinse is cold?
Not necessarily. It means the machine waited longer before the final rinse because the boiler was not ready. Check the rinse temperature if you are worried.
Need help with MEIKO error code ERR 206?
A technician confirms the cause on site and gives you the price in writing before any work starts.