Samsung · Refrigerator
Samsung Refrigerator 33E Error Code
Ice pipe heater failure
What this error means
33E indicates the heater wrapped around the ice maker fill pipe failed—the pipe freezes and water cannot reach the mold. Ice production stops even when the freezer temperature reads normal.
How 33E is detected
When 33E appears on a Samsung refrigerator, the control board has confirmed that water did not leave the machine within the programmed drain window. On Samsung RF23M8590SG, Samsung RF28R7351SG, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most 33E calls are resolved without parts: unplug 30 minutes per samsung guidance, then restore power once. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If 33E returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Open ice pipe heater element
- Connector loose at the main PCB heater output
- Fill tube frozen from prior heater failure compounding the fault
- Shorted heater blowing the inline fuse
Step-by-step fixes
- 1Unplug 30 minutes per Samsung guidance, then restore power once
- 2Thaw the visible fill tube with low heat if no water enters the mold
- 3Turn ice maker off until 33E clears to avoid burned fill valve
- 4Check freezer temp is at 0 °F—warm freezer accelerates pipe freeze
When to call a technician
33E returning after pipe thaw requires ice pipe heater replacement—access from the ice maker area.
Affected models
- Samsung RF23M8590SG
- Samsung RF28R7351SG
- Samsung RF28R6241SR
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use refrigerators to prevent 33E from lint and food debris buildup.
- Record when 33E appears in the cycle and whether it clears after a 60-second power reset on your Samsung refrigerator—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for 33E; Samsung uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting 33E; reversed plugs on pumps and valves cause immediate repeat faults.