Meiko UPster U 400 M2 Code INFO 120-126: Emergency Program
INFO 120 to 126 on a Meiko UPster U 400 M2 means an emergency program is active or the door or hood is not closed. Close the door or hood and make sure the fresh water valve is open. You may continue at limited capacity, but call a service technician.
Medium: the machine runs only at limited capacity until the cause is repaired.
- Code
- INFO 120-126
- Maker
- MEIKO
- Equipment
- Dish machines
- Applies to
- UPster U 400 M2
What does MEIKO error code INFO 120-126 mean?
The INFO series on the UPster U 400 M2 are notices rather than hard stops. INFO 120 to 126 tell staff either that an emergency program is running or that the door or hood is not closed. The emergency program is a fallback: when something such as heating or the water feed is not working as normal, the machine can still wash at limited capacity instead of stopping completely. The manual lists the things behind the notice: no heating of the boiler or tank, no fresh water, an open door or hood, an I/O board problem, or a microswitch that does not report closed. The simplest checks come first. Close the door or hood, and confirm the fresh water supply valve is open. If the message stays, the machine is working in its limited mode and something needs repair. The maker allows you to continue at limited capacity, but a service technician should be called. Never hold or bypass the microswitch, because it is the door's safety input.
Affected models and control systems
This is for the Meiko UPster U 400 M2 glass and dishwasher. Other Meiko models and other controller generations number their notices differently.
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
- INFO 120 to 126 on the display
- Machine washing with reduced performance
- Water not as hot as usual
- Hood or door that does not seem to register as closed
Possible causes
Listed in MEIKO's documentation
- Door or hood closed and latched
- Water supply and fresh water to the machine
- Boiler and tank heating
- Microswitch and the I/O board
Other likely causes — what usually sits behind error code INFO 120-126 on this control. A technician confirms which one it is before any part is replaced.
- Hood microswitch actuator worn so it only registers on a hard close
- Heating relay that has dropped out, putting the machine into the emergency program
- Fresh water valve that was closed at the end of the previous shift
Safe checks before calling for service
- Close the door or hood, as the maker says.
- Make sure the fresh water supply valve is open.
- You may continue at limited capacity, but call a service technician as the maker says.
- Do not hold or bypass the microswitch.
- Tell us the exact number between 120 and 126 you saw.
How a technician diagnoses error code INFO 120-126
- Read the INFO number and any heating or door errors with it.
- Check the door or hood latch and microswitch.
- Confirm the fresh water supply and fill.
- Check boiler and tank heating with a meter.
- Test the I/O board inputs.
- Replace the switch, relay or board only after the tests.
- The microswitch and I/O board are wired to live control circuits in the cabinet.
- Telling a heating loss from a water loss takes temperature and fill readings.
- Bridging the microswitch removes a safety stop.
How error code INFO 120-126 differs from similar codes
INFO notices allow limited work, whereas the ERR codes on the same machine stop it entirely.
Technical reference
- Document
- UPster U 400 M2 Original operating instructions 9760441 (update 2026-06), 9.6.1 Messages p.33-35
- Edition
- 9760441 / Valid from: 2018-02 / Update: 2026-06
- Models / control
- UPster U 400 M2
- 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 washing under INFO 120?
Yes, at limited capacity. Expect slower or weaker results.
Is it just the hood?
It may be. Check the door or hood first, then the water.
Does it go away alone?
If closing the hood fixes it, yes. Otherwise something needs repair.
Need help with MEIKO error code INFO 120-126?
A technician confirms the cause on site and gives you the price in writing before any work starts.