The A-Stage AS-R90BK-100 is the black version of the manufacturer’s 90 L, two-door refrigerator/freezer range sold in Japan. The manufacturer identifies it directly in the product information, operating manual and troubleshooting FAQ. Start by observing the appliance safely before changing a setting.
A-stage 90 L two-door refrigerator/freezer (black) AS-R90BK-100 Error Codes
No manufacturer-confirmed error symbols are currently recorded for this exact model. This does not prove that the appliance cannot display a code or warning.
No verified code list available. Use the matching model manual or manufacturer support for unexplained display messages.
The directory currently provides no verified error-code table for this model. Check the official model manual and symptom advice; do not apply generic codes from another appliance.
Error-code status: No model-specific alphanumeric error-code list was verified in the reviewed manufacturer documents. The guidance below uses manufacturer-documented symptoms, not invented display codes.
Safety first
Keep electrical connections dry and unobstructed. Stop using the refrigerator and request qualified assistance if there is smoke, a burning smell, sparking or electrical damage. Do not access wiring, refrigerant tubing or the compressor. Never use a sharp implement to chip away frost.
Common symptoms and checks
| What you notice | Safe check | Expected result / next step |
|---|---|---|
| No power | Check that the plug is properly inserted into a safe, dry outlet. | If there is still no power, stop and seek support. |
| Not cooling | Check the plug, interior light and that the temperature dial is not at OFF. | If unchanged, use the maker’s documented reconnect procedure; seek service if it persists. |
| Weak cooling | Check door closure, blocked airflow, overpacking, and nearby heat sources. | Restore airflow and observe; contact support if cooling does not recover. |
| Too cold | Check the temperature control against the manufacturer manual. | Adjust as directed and observe; seek support if excessive cooling continues. |
| Frost buildup | Reduce door opening and examine the door seal area for trapped objects. | Defrost using the manufacturer’s instructions; do not use sharp tools. |
| Rattling or unusual sound | Look for vibrating items resting on or beside the cabinet; ensure stable placement. | Remove contact/vibration sources; persistent abnormal noise needs support. |
Power interruption and repeated faults
For a no-cooling problem that continues after checking the plug and dial, the manufacturer specifically instructs users to unplug the AS-R90 series appliance, wait at least five minutes, reconnect, and check again. This is a documented troubleshooting step, not a claim that all faults can be cleared by a universal reset. If cooling still fails, contact A-Stage support. If frost repeatedly returns, reduce long/frequent door openings and check for food obstructing closure; follow the linked defrost instructions.
Manual and manufacturer support
Official 90 L product page confirms the AS-R90BK-100 model and cabinet specifications. Manufacturer operating manual (PDF) explicitly lists AS-R90BK-100 on its cover. Manufacturer’s AS-R90 series troubleshooting FAQ provides symptom-by-symptom instructions for AS-R90BK-100, AS-R90WT-100 and AS-R90SL-100. These pages do not establish applicability to the differently named ARM-90L02 models.
Related A-stage Refrigerator models
Compare published guides for other A-stage Refrigerator models. Check the complete model number and market before following instructions.