Meiko Dishwasher Error Code 200: Boiler Level Not Reached
Message 200 on a Meiko M-iClean U dishwasher means the boiler level was not reached on time during filling. The maker's steps are to open the local water supply and to check and clean the pre-filter or sieve. If 200 returns, call us and do not fill the boiler by hand.
Medium: the boiler cannot fill, so the rinse may fail until the supply or valve is fixed.
- Code
- 200
- Maker
- MEIKO
- Equipment
- Dish machines
- Applies to
- M-iClean U (red/gray messages)
What does MEIKO error code 200 mean?
On Meiko M-iClean U undercounter dishwashers, message 200 means the boiler level was not reached on time during filling. The boiler is the small tank that makes the hot final rinse, and the control fills it within a set time and watches the level. If the boiler does not fill within the time the control allows, the message appears. The maker's operator steps are to open the local water supply and to check and clean the pre-filter or sieve, so the first suspect is the water coming in. After that, the manual points to the boiler fill valve and building water pressure that has dropped. A sediment-laden supply is common after plumbing work. The display text is 200. If the supply is open and the filter is clean, a valve or level problem inside the machine needs a technician.
Affected models and control systems
Meiko M-iClean U undercounter dishwashers (red and gray messages), per the operating instructions 9763258, section 9.4.1 Messages. Message 200 concerns the boiler; 116 concerns the wash tank refill.
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
- Message 200
- Final rinse weak or missing
- Machine waiting while the boiler fills
- Water pressure low at the machine
Possible causes
Listed in MEIKO's documentation
- Local water supply valve not fully open
- Pre-filter or inlet sieve clogged with debris
- Boiler fill valve not passing enough water
- Building water pressure that has dropped
Other likely causes — what usually sits behind error code 200 on this control. A technician confirms which one it is before any part is replaced.
- A supply valve partly closed after maintenance
- A pre-filter packed with sediment after a water main flush
- A fill valve that has scale or debris at its seat
Safe checks before calling for service
- Open the local water supply valve fully, as the maker's message says.
- Check the pre-filter or sieve on the water line and clean it if needed.
- Switch the machine off, wait a minute, and start it again.
- If 200 returns, call us and do not bypass the level sensing or fill the boiler by hand.
How a technician diagnoses error code 200
- Read the message and confirm supply pressure and flow.
- Clean the pre-filter and check hoses for kinks.
- Test the boiler fill valve and its coil.
- Check the boiler level sensing against the actual level.
- Check for leaks that drain the boiler as it fills.
- The boiler holds hot water and runs on line voltage.
- Fill valve and level checks need meter work.
- Filling by hand bypasses the sensing and can overfill the boiler.
How error code 200 differs from similar codes
Message 200 is the boiler fill timeout, and 212 is the boiler forced-drain reminder.
Technical reference
- Document
- M-iClean U Original operating instructions 9763258 (update 2026-06), 9.4.1 Messages p.43-45
- Edition
- 9763258 / Valid from: 2018-09 / Update: 2026-06
- Models / control
- M-iClean U (red/gray messages)
- Section
- 9.4.1 Messages, printed pp. 43-45 of 70 (PDF pp. 43-45)
- 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 washing with 200?
The final rinse depends on the boiler, so results will suffer. Fix the supply first.
Will 200 clear by itself?
It can if low pressure was temporary, but a clogged filter returns.
Is 200 a leak?
Not necessarily. It means the boiler did not fill in time, which usually starts with the water supply.
Need help with MEIKO error code 200?
A technician confirms the cause on site and gives you the price in writing before any work starts.