---
type: lookup
id: 21
asset: appliance-fault-error-codes
title: "21 — Appliance fault and error codes"
sources:
  - https://faultcodelab.com/data/error-codes.v1.json
source_quote: "defrost-overheat warning whose owner path depends on actual compartment temperature."
generated: true
verified: false
harvested: 2026-08-04
stale_after: 2027-08-04
brand: "Sub-Zero"
appliance_type: "refrigerator"
error_code: "21"
meaning: "Defrost-overheat warning whose owner path depends on actual compartment temperature."
---
**Brand:** Sub-Zero

**Appliance type:** refrigerator

**Error code:** 21

**Meaning:** Defrost-overheat warning whose owner path depends on actual compartment temperature.

> defrost-overheat warning whose owner path depends on actual compartment temperature.

Source: <https://faultcodelab.com/data/error-codes.v1.json>