Samsung Refrigerator code **91C** is associated with **refrigerator compressor low-voltage error (dual-compressor models)**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. Samsung uses overlapping code conventions across model years and regions. This page keeps the appliance context attached to the code so a same-looking string from another product family is not misapplied. The recorded display form is **91C**. Search normalization stores it as **91C** while preserving the characters a homeowner actually sees.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 91C may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Samsung Refrigerator code **91C** is associated with **refrigerator compressor low-voltage error (dual-compressor models)**. The display identifies the system or condition the control detected, but it does not by itself prove which individual part should be replaced. Samsung uses overlapping code conventions across model years and regions. This page keeps the appliance context attached to the code so a same-looking string from another product family is not misapplied. The recorded display form is **91C**. Search normalization stores it as **91C** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
While 91C is active, cooling or heat-pump performance can drop or stop.
On affected Samsung refrigerator models, the compressor can attempt to start, stop unexpectedly, or run without the expected result.
91C can be accompanied by this pattern: the code can follow abnormal voltage, current, inverter, or motor feedback.
On affected Samsung refrigerator models, 91C appears and the refrigerator can show behavior related to refrigerator compressor low-voltage error (dual-compressor models).
A symptom that fits 91C is that cooling, airflow, ice-making, defrost, or temperature performance can become intermittent depending on the affected subsystem.
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
As an external check for 91C, confirm household power is stable and the appliance has not just experienced an outage or surge.
With 91C recorded, check only external airflow and temperature conditions described in the manual.
For 91C, start by doing this: do not open sealed refrigeration circuits or inverter/high-voltage sections.
With 91C recorded, photograph the code before resetting or unplugging the refrigerator.
Before requesting service for 91C, check doors, visible airflow/ice obstructions, water/ice-bin seating, or demo mode only when relevant.
To rule out an accessible cause, use the exact model manual because Samsung refrigerator codes vary by family.
Important safety warning. Protect food if temperatures are no longer safe. Do not open the sealed refrigeration system or energized inverter/compressor circuits. Do not bypass a safety device merely to see whether 91C disappears.
Get help
When to request repair service
Compressor/inverter issues require qualified electrical and refrigeration-system diagnosis, especially when temperatures are unsafe or the code returns after a power reset. In a service visit for 91C, model-specific testing should follow the refrigerator compressor low-voltage error (dual-compressor models) circuit rather than treating the code as proof of one failed part.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
One controlled restart is reasonable after correcting an obvious external issue. A recurring **91C** display should be treated as diagnostic evidence, not as a reason to keep rebooting the appliance.
Continue only if the appliance is otherwise safe and the owner-level checks are appropriate. Stop for leakage near electrical parts, smoke, burning odor, arcing, gas concerns, repeated breaker trips, uncontrolled heating, or unsafe temperatures.
No. **91C** tells you which condition or check the control detected. The same display can result from the named component, its wiring, a connector, a supply/airflow/water condition, or the control that reads it.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Refrigerator 91C** separate from same-looking codes used by other Samsung appliance families.
References
Sources & references
Samsung Canada internal RF32FMQDBSR/AA service error-code pages (support-cacyber.samsung.com)
