Meiko UPster U 400 M2 Error Code ERR 205: Door Contacts Unequal
ERR 205 on a Meiko UPster U 400 M2 means the signals of the two door contact switches are unequal. The maker says it is not possible to continue and to call a service technician. Open and close the door firmly and clear the rack first.
High: the machine will not run until the door contacts are repaired.
- Code
- ERR 205
- Maker
- MEIKO
- Equipment
- Dish machines
- Applies to
- UPster U 400 M2
What does MEIKO error code ERR 205 mean?
The UPster U 400 M2 fits two door contact switches so the control can confirm the door is closed. Both must report the same state before a cycle is allowed. ERR 205 appears when the two signals do not agree: one contact says the door is shut and the other says it is not. The control cannot decide which is correct, so it plays safe and refuses to run. The manual is direct about this, saying it is not possible to continue and that a service technician should be called. The cause can be either switch, the wiring and connectors to them, or the door itself if it has dropped or twisted so that one side seats while the other does not. A rack or a dish resting on the door edge can produce a momentary mismatch, so it is worth opening the door fully, closing it firmly and checking the edge before calling. If the error remains, the switches need testing. The door contacts are the machine's protection against opening mid-cycle, so they should never be taped or propped.
Affected models and control systems
This applies to the Meiko UPster U 400 M2 glass and dishwasher. Other Meiko models use different error numbers for their door switches.
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 205 on the display
- Machine will not start a cycle
- Door that closes normally but the display disagrees
Possible causes
Listed in MEIKO's documentation
- Door contact switch 1
- Door contact switch 2
- Wiring and connectors to the switches
- Door alignment or hinges
Other likely causes — what usually sits behind error code ERR 205 on this control. A technician confirms which one it is before any part is replaced.
- Contact 2 actuator bent or shifted after a hard door close
- Steam or detergent residue on one contact
- Hinge play that leaves one side of the door a few millimeters off
Safe checks before calling for service
- Open the door, close it firmly, and look at the display.
- Check that the rack and dishes are clear of the door edge.
- Call a service technician, since the maker says it is not possible to continue.
- Do not tape, prop or bypass any door contact.
- Tell us whether the door feels loose or crooked.
How a technician diagnoses error code ERR 205
- Read ERR 205 and test the door by hand.
- Check door alignment, hinges and the latch.
- Test contact 1 and contact 2 separately with a meter.
- Inspect wires and connectors for moisture or damage.
- Compare the two actuators for position and travel.
- Replace the failed contact only after the test.
- Door contacts are safety devices wired into live 208-240 V control circuits.
- Testing them means removing panels and using a meter on energized wiring.
- Bypassing a contact removes the protection that stops a cycle when the door opens.
How error code ERR 205 differs from similar codes
ERR 205 is a mismatch of two switches, while an open door alone gives a simple door message on this controller.
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 run the machine with ERR 205?
No. The maker says it is not possible to continue.
It cleared after I reopened the door. Should I worry?
If a rack caused it, probably not. If it returns, call us.
Why two switches?
So the control can be sure the door is closed. If they disagree it stops.
Need help with MEIKO error code ERR 205?
A technician confirms the cause on site and gives you the price in writing before any work starts.