Ice-O-Matic CIMU undercounter cubers
Undercounter cubers with a small display, up / down arrows for freeze time, and Power and Clean buttons. Errors show on the display with a quick-flashing red light next to the Power button.
What it is: Undercounter cube ice machine. Undercounter version of the Elevation CIM, with a two-digit display and a harvest assist.
Key combo: Hold POWER + CLEAN (wash) for 3 s to clear an error code.
Ice-O-Matic CIMU undercounter cubers error codes
| Code | Meaning | Likely cause | How to reset |
|---|---|---|---|
| E1 | Maximum freeze time | Freeze ran 75 minutes. The unit waits 2 hours and retries; it locks out after the third failure | Hold POWER + CLEAN for 3 s. Clears by itself if a retry succeeds. |
| E2 | Minimum harvest error | Harvest assist made a full turn before the 45-second minimum harvest time; unit retries freeze every 2 hours | Hold POWER + CLEAN for 3 s. |
| E5 | Maximum harvest | Harvest did not finish; harvest assist retries every 2 hours | Hold POWER + CLEAN for 3 s. If a retry completes a full turn the unit stops. |
| E6 | Maximum freeze after a maximum harvest | A 75-minute freeze followed an E5; unit retries harvest every 2 hours | Hold POWER + CLEAN for 3 s. |
| hE | Harvest check at start-up (not a fault) | Board confirms the harvest assist turns a full 360° | None needed. |
Other useful key presses
| Task | How |
|---|---|
| Adjust freeze time | Up / Down arrows, in 30-second steps, from 0 up to 990 seconds. |
| Manual harvest, then off (h1) | Press and release POWER. The unit stops after the next harvest. Press again to cancel. |
| Harvest now, then off (h2) | Hold POWER for 3 s during freeze. Press and release POWER to cancel the shutdown. |
| Clean | CLEAN starts the wash mode. Clear ice off the evaporator first. |
Notes
- The manual's error section covers E1, E2, E5 and E6 only. We have not listed E3 or E4.
- The status lights show what should be running: compressor, condenser fan, water pump, purge valve and hot gas / harvest assist.
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: Ice-O-Matic CIMU undercounter series service manual. Always check the manual for your exact model and software version.
ServiceModes is not affiliated with Ice-O-Matic or any other manufacturer. Written in our own words from the manufacturer's documentation.