Scotsman Prodigy C0322–C2148

Modular cuber with a single-character code display, component indicator lights and four buttons (On, Off, Harvest, Clean). The controller logs the last 10 diagnostic codes.

What it is: Modular cube ice machine. Prodigy and Prodigy Plus (D series) cubers, air, water and remote cooled.

Key combo: From standby: hold Off for 3 s, then hold Clean for 3 s to run Test Mode. Hold Off for 3 s, then tap Harvest to read the last 10 codes.

Error codes ↓
Start Test Mode ↓
Control limits and settings ↓
Change a setting ↓

Scotsman Prodigy C0322–C2148 error codes

Code	Meaning	Likely cause	How to reset
F	Freeze cycle (F flashing = freeze about to start)	Normal	—
H	Harvest cycle (H flashing = manual harvest)	Normal. H also flashes after a power cut while the default harvest runs	—
b	Bin is full	Normal	Restarts when the bin control calls for ice.
C	Clean cycle running	Normal	—
L	Board locked	Lock sequence entered	Use the unlock sequence below.
d	Test Mode running	Test started from the buttons	Ends by itself at about 95 s.
O	Off	Switched off	Press On.
E	Self test failed	Controller fault	Power cycle. Replace the controller if it repeats.
1 (flashing)	Freeze ran past the 45-minute limit, retrying	Low charge, poor airflow or water flow, dirty evaporator, sensor fault	Clears if the next freeze is normal.
1	Shut down: three long freezes in a row	Same as above	Manual reset: press Off, then On.
2 (flashing)	Harvest ran past 3.5 minutes without the curtain opening, retrying after 50 min	Ice not releasing, hot gas valve, curtain switch	Restarts by itself up to two times.
2	Shut down: third long harvest in a row	Same as above	Manual reset: press Off, then On.
3	Slow water fill	Water off, low pressure, inlet valve or filter blocked	The board retries every 20 minutes.
4	High discharge temperature (limit 250 °F)	Dirty condenser, fan fault, high ambient, water-cooled supply low	Fix the cause, then reset with Off then On.
5	Sump (water) temperature sensor failure	Sensor or connector (J6)	Replace or reconnect the sensor.
7	Discharge temperature sensor failure	Sensor or connector	Replace or reconnect the sensor.
8 (flashing)	Short freeze (thin ice), retrying	Ice thickness sensor, water problems	Clears if the next cycle is normal.
8	Shut down: repeated short freeze	Thin ice harvest in three more cycles	Manual reset: press Off, then On.

How to start Test Mode

Put the machine in standby (status light off).
Hold Off for 3 seconds and release.
Hold Clean for 3 seconds and release. d shows and the output test starts.

The sump fills for 30 s, the pump runs, then the purge and hot gas valves open, the compressor runs about 20 s, everything stops, the hot gas valve opens to equalize, then the fan runs 10 s (air-cooled, fan control jumped). About 95 s total. Remote models run the liquid line / bypass valve instead of the fan.

Control limits and settings

Code	What it does	Range	Default / typical
Max freeze time	Longest freeze before a retry	fixed	45 min
Min freeze time	Shortest normal freeze	fixed	6 min
Max harvest time	Longest harvest before a 50-minute wait	fixed	3.5 min
Max water fill	Longest fill before code 3	fixed	5 min (retry every 20 min)
Max discharge temp	High temperature cut-out	fixed	250 °F
Manual / power-up harvest	Default harvest time	fixed	3 min
Minimum compressor off	Anti-short-cycle time	fixed	4 min
Pump-down (remote only)	Compressor-only run every 12 h	fixed	30 s
Purge level	Water dumped each cycle	1–5 or A	—
De-scale interval	Power-on time between clean reminders	1 yr / 0 / 4 mo / 6 mo (older boards 3–6 mo)	6 months

How to change a setting

Purge level: from standby hold Off 3 s, release, then tap On to step through settings 1–5 or A (automatic).
De-scale reminder interval: from standby hold Harvest 3 s, then tap Clean to step through 1 year, 0 (off), 4 months or 6 months (default). Press Off, or leave it 60 s, to keep the shown setting.
Recall codes: hold Off 3 s, release, then tap Harvest to step from newest to oldest.
Clear codes: hold Clean and Harvest together for 3 s. If a clean cycle starts, press Off.

Other useful key presses

Task	How
Reset the control	Press Off, then press On.
Lock / unlock	Hold On 5 s and, still holding, tap Off twice (from On). From Off: hold On, tap Off once within 3 s, wait 5 s, tap Off twice, release On.
Empty the reservoir	Hold Clean 3 s. Pump and purge valve run 30 s. Repeat as needed.

Notes

Code 6 is not used in the code list in this manual.

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: Scotsman Prodigy C0322–C2148 service manual (2015–2016 pages). Always check the manual for your exact model and software version.

ServiceModes is not affiliated with Scotsman or any other manufacturer. Written in our own words from the manufacturer's documentation.