# Scotsman NS0922: Used-Buy Risk, Repairs & What to Check | KitchenRisk

> Used Scotsman NS0922 buying guide, bin-level photo-eye sensor set risk, repair costs and what to inspect.

**Verdict:** inspect

Popular nugget-ice head with active OEM parts support (water level sensor ~$37, bin-level photo-eye sensor set ~$255); Scotsman's own service manual requires the photo-eyes and water probes to be manually cleaned twice a year and flags scale/blockage on either as a direct cause of overfill, no-ice, or bin-code faults, so confirm the ice level shuts off properly and the reservoir probes are clean before buying used.

**Documented failure risks:**
- Bin-level photo-eye sensor set: OEM bin level control/sensor set (Scotsman A37708-021, set of 2) lists at $254.72 on Parts Town. Per Scotsman's own service manual, "The control that senses bin full and empty is a photo-electric eye, therefore it must be kept clean so it can 'see'. At least twice a year, remove the ice level sensors from the base of the ice chute, and wipe the inside clean." The manual's diagnostic table also lists a blocked or scaled photo-eye in the chute as a cause of the unit overfilling or shutting down on a bin-code fault.
- Water level sensor: OEM water level sensor (Scotsman A40666-001, two-probe conductivity type) lists at $36.71 on Parts Town. Scotsman's service manual states: "The ice machine senses water by probe located in the water reservoir. At least twice a year, the probes should be wiped clean of mineral build-up," and separately describes it as a "Two probe conductivity sensor. When water touches it the Water Present light will be ON." Mineral scale on the probes is the documented failure mode to check for during inspection.

## Sources
- [Scotsman A40666-001 Water Level Sensor | Parts Town](https://www.partstown.com/p/scotsman/sca40666-001) — "My Price: $ 36.71 ... Manufacturer #: A40666-001 ... Parts Town #: SCA40666-001"
- [Scotsman A37708-021 Bin Level Control/Sensors, Set of 2 | Parts Town](https://www.partstown.com/p/scotsman/sca37708-021) — "My Price: $ 254.72 ... Manufacturer #: A37708-021 ... Parts Town #: SCA37708-021 ... BIN LEVEL CONTROL (SET)"
- [Scotsman NH/NS/FS Series Air, Water or Remote Service Manual (covers NS0922)](https://www.partstown.com/modelManual/SC-NS0922_sm.pdf?v=1725481909841) — "NH0422, NS0422, FS0522, NH0622, NS0622, FS0822, NH0922, NS0922, FS1222, NH1322, NS1322, FS1522 ... The control that senses bin full and empty is a photo-electric eye, therefore it must be kept clean so it can "see". At least twice a year, remove the ice level sensors from the base of the ice chute, and wipe the inside clean, as illustrated. ... The ice machine senses water by probe located in the water reservoir. At least twice a year, the probes should be wiped clean of mineral build-up. ... Water Level Sensor -- Two probe conductivity sensor. When water touches it the Water Present light will be ON."

_Last verified 2026-09-20. Source: KitchenRisk — https://kitchenrisk.com/models/scotsman-ns0922/ — every claim checked against a primary source before publication (see /methodology/)._