Scotsman Ice Machine Code T: Test Mode
T on a Scotsman Prodigy Elite modular cuber means the output test mode is running. It is a status code used to check machine outputs, not a failure. Let the test finish or exit it as a technician directs.
Low: a diagnostic status; the machine is not making ice while the test runs.
- Code
- T
- Maker
- Scotsman
- Equipment
- Ice machines
- Applies to
- Scotsman Prodigy Elite modular cubers MC0322, MC0522, MC0722, MC0330, MC0530, MC0630, MC0830, MC1030, MC1448, MC1848, MC2148
What does Scotsman error code T mean?
T is a status entry in the Code Display legend of the Scotsman Prodigy Elite service manual. It labels the state as Test Mode, and the manual's wording is that the output test mode is running. In a test mode, the controller turns the machine's outputs on one at a time so that someone can see whether each valve, pump or motor responds. This is a diagnostic aid, so it is normally started on purpose by a person working on the machine. The legend adds nothing about causes or steps. The same manual mentions that the front panel carries further codes and that the last 10 error codes can be recalled with Off held for three seconds followed by Harvest. If T appears when no one started a test, the code history may show what the machine was doing before.
Affected models and control systems
Scotsman Prodigy Elite modular cubers MC0322, MC0522, MC0722, MC0330, MC0530, MC0630, MC0830, MC1030, MC1448, MC1848 and MC2148, from the Code Display legend on page 15 of the service manual. Page 30 of that manual explains recalling and clearing codes.
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
- T shown on the display
- Valves, pumps or motors switching in sequence
- No normal ice making
Possible causes
Likely causes — what usually sits behind error code T on this control. A technician confirms which one it is before any part is replaced.
- The output test mode is running
- Test mode started by someone checking outputs
- Test mode left running after service
- Keypad sequence pressed by accident during cleaning
Safe checks before calling for service
- Ask whether anyone was working on the machine.
- Leave the machine alone while outputs are cycling.
- Do not open the front panel.
- Recall the last 10 codes if you need a record: hold Off for 3 seconds, then press Harvest.
- Write down when T started and tell the technician.
How a technician diagnoses error code T
- Read the display and confirm test mode.
- Watch the outputs through the test as the service manual lists.
- Record any output that does not respond.
- Exit test mode and return the machine to normal.
- Review the code history for problems seen during the test.
- Output testing means energizing valves and motors at line voltage.
- A mis-set test can run pumps dry.
- Interpreting the output sequence needs the service manual.
How error code T differs from similar codes
T is a service diagnostic mode, different from the customer-facing C and P states on the same legend.
Technical reference
- Document
- Service Manual for Air, Water, and Remote Cooled Modular Cuber - Prodigy Elite Models MC0322 through MC2148
- Edition
- January 2022
- Models / control
- Scotsman Prodigy Elite modular cubers MC0322, MC0522, MC0722, MC0330, MC0530, MC0630, MC0830, MC1030, MC1448, MC1848, MC2148
- Section
- Controller Information - Code Display legend, p. 15; code recall and clear, p. 30; control safeties p. 29. Our cited 'Prodigy Eclipse EH330/EH430' and 'Prodigy Plus flake/nugget' controllers are not covered in this PDF.
- 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 Scotsman ice machine error codes
Is T a failure?
No. It is the output test mode running.
Can I leave T running?
It is meant to be temporary. Have it exited.
Did T damage the machine?
The legend does not suggest so.
Need help with Scotsman error code T?
A technician confirms the cause on site and gives you the price in writing before any work starts.