mypros+
Error code reference

Samsung Refrigerator Error Code R-1-a

Ice Maker Sensor Error

Avg. service call
$285
National average. Trip fee plus diagnostic plus labor. Before parts.
MyPros+ 3-day pass
$9.95
Same diagnostic steps, on your phone. Start now.
You keep in your pocket
~$275
Even before you buy the part.
Skip the service call. Fix it yourself.
Full procedure unlocks instantly.
Get Started

What the R-1-a error code actually means

The R-1-a error means your Samsung refrigerator has detected a problem with the temperature sensor inside the ice maker. The sensor may be broken, disconnected, or reading temperatures that are impossibly high or low. Until this is resolved, the ice maker may stop working or behave erratically.

Diagnostic procedure

The full R-1-a procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
Confirm the fault
Power cycle the unit: switch off the breaker for 60 seconds, then restore power. If the code returns, the fault is persistent and the procedure below isolates the cause.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock R-1-a procedure $9.95

Or subscribe: $29/month for unlimited access to all codes plus Max AI diagnostics.

Most common causes of R-1-a

Ranked by how often they cause this code
  1. 1Disconnected or loose sensor connector
  2. 2Failed ice maker thermistor
  3. 3Sensor physically separated from housing
  4. 4Damaged wiring harness
  5. 5Actual temperature out of range due to defrost or airflow failure

Most DIYers save hundreds by diagnosing before ordering parts.

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass

Questions people ask about R-1-a

What does R-1-a mean on a Samsung refrigerator?
R-1-a is an ice maker sensor error code. It indicates that the control board has detected a problem with the ice maker temperature sensor, which could include a loose or broken connection, a short circuit, physical separation of the sensor from its housing, or a temperature reading above 149°F (+65°C) or below -58°F (-50°C). The ice maker may stop producing ice until the fault is resolved.
Is it safe to keep using my refrigerator while R-1-a is displayed?
The refrigerator itself will generally continue cooling food safely while this code is active, since R-1-a is specific to the ice maker sensor circuit. However, the ice maker may not function correctly or may stop producing ice entirely. It is best to resolve the fault promptly to avoid any secondary issues with ice maker components.
How much does it cost to repair the R-1-a error on a Samsung refrigerator?
Repair costs vary depending on the cause. If only a connector needs to be reseated, there may be no parts cost at all. Replacing the ice maker thermistor typically involves a parts cost in the range of $15 to $50, plus labor if a technician is hired. If the ice maker assembly requires broader repairs, total costs including labor could range from $100 to $300 or more depending on your location and service provider.
Can I fix the R-1-a error myself?
Some causes of R-1-a are DIY-friendly. Start by checking whether the sensor connector is fully seated and the wiring shows no obvious damage. If the sensor has separated from its housing, reseating it may clear the error. Replacing a failed thermistor is also within reach for confident DIYers, though it requires accessing the ice maker assembly and basic electrical testing with a multimeter.
Will resetting my Samsung refrigerator clear the R-1-a error?
A reset may temporarily clear the error code from the display, but it will return if the underlying sensor fault is still present. To permanently clear R-1-a, the root cause, such as a failed sensor, loose connector, or damaged wiring, must be identified and corrected. A reset alone is not a repair.

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass