Merrychef conneX 12 and conneX 16
Accelerated cook oven with touch screen. A fault screen shows the code, a Restart button and a QR link; the oven stays locked if the fault returns.
What it is: High-speed oven
Merrychef conneX 12 and conneX 16 error codes
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E0 | Jumper missing on new IO board | X510 link not fitted | Fit the jumper on the front two pins of X510. |
| E88 | Supply voltage error | Mains below about 180 V | Compare mains with the diagnostic reading; check connections. |
| E101 | Magnetron system failed | Oven asked for microwave but saw no current | Test each magnetron in Diagnostic View; 0 A points to the primary wiring. |
| E102 / E106 | Heater on / cavity too hot | Cavity 75 °C over set point, usually a shorted triac (or a product fire) | Check the triac and probe. |
| E103 | Ambient overheat | Dirty air filter or heat source nearby | Clean the filter daily; move away from heat. |
| E104 | Cavity overheat stat open | Safety stat tripped | Reset the stat at the rear; check X512 wiring. |
| E105 | Mains frequency off by ±2 Hz | Unstable supply (e.g. generator) | Check the building supply. |
| E107 | Board communication error | UI–IO cable | Secure or replace the cable. |
| E108 | UI micro-SD missing or corrupt | Card | Refit or replace the card. |
| E109 | IO PM chip error | Wrong or loose PM chip | Reseat or replace it. |
| E110 | Firmware version conflict | Mismatched firmware | Load the latest firmware; do not interrupt it. |
| E111 | Cavity thermocouple fault | Loose or damaged thermocouple | Check it at X530. |
| E112 | IO board ambient sensor failed | Board fault | Replace the IO board (move the PM chip across). |
| E113 | Magnetron current without a call | IO board fault | Replace the IO board. |
| E116 | Heater not responding | Connections, fuses F3/F4, IO board or element | Check the supply path first. |
| E117 / E118 | Right / left magnetron overheat stat | Stat open | Check stat and X513/X514. |
| E84 | Invalid date | Clock wrong | Set date and time. |
| E98 | Incomplete cleaning | Clean not finished | Finish the clean. |
| E99 | Air filter | Filter out or switch fault | Check the filter magnet and microswitch. |
| E89–E97 | Recommission test failed | Cooling, fan, heater, magnetron, filter or door test | Recheck that part and rerun the test. |
How to enter service / parameter mode
- Switch on and wait for the Merrychef screen. Tap the settings icon.
- Enter the manager password, scroll to Service Settings, then enter the service password (both from the manual or site).
- Tabs: Event Log, Diagnostic view, Oven test, Temperature calibration, Demonstration, Warranty.
Other useful key presses
| Task | How |
|---|---|
| Abridged service screen | From an error screen, the cog button gives Event Log, Updates and Warranty. |
Notes
- E81, E82, E86, E87 and E100 are log events (firmware or menu updated, power, cleaning), not faults.
For licensed technicians only. This equipment can involve mains voltage, high-voltage microwave circuits, gas and refrigerant. Isolate power (and gas) before opening panels, follow the manufacturer's manual and your local licensing rules (for example ARC refrigerant handling and electrical or gas licences). Wrong settings can spoil food or damage equipment. Check every value on the unit in front of you before changing it.
Based on: Merrychef conneX 12 and 16 service and repair manual. Always check the manual for your exact model and software version.
ServiceModes is not affiliated with Merrychef or any other manufacturer. Written in our own words from the manufacturer's documentation.