Samsung 33E Error Code — What It Means
The 33E error code on Samsung refrigerators indicates a fault with the ice pipe heater (also called the fill tube heater). This small heating element wraps around the water tube that feeds your ice maker and prevents it from freezing shut. When the heater fails or loses electrical connection, the tube can freeze over and block water flow to the ice maker. You may notice the ice maker stops producing ice, or you may see frost and ice buildup around the fill tube area in the freezer compartment.
Common Causes
- Failed heater element The ice pipe heater itself burns out or develops an open circuit, which is the most common root cause of the 33E code.
- Loose or damaged wiring The harness connector to the heater can become unplugged, corroded, or damaged by ice expansion or normal wear.
- Frozen fill tube or water line When the heater stops working, ice builds up inside and around the tube, blocking water flow and triggering the fault.
- Control board circuit fault The main PCB may fail to energize the heater correctly or misreport the heater status, though this is less common than heater failure.
Step-by-Step Fix
- Unplug the refrigerator or turn off the circuit breaker for at least two minutes, then restore power to clear the code and see if it returns immediately.
- Access the ice maker and fill tube area by removing the ice bucket and any covers in the freezer ceiling or wall where the ice maker mounts.
- Inspect visually for ice buildup around the fill tube, loose or damaged wiring at the heater connector, and any signs of frost or water leakage.
- Thaw the fill tube if you see ice blocking it by using a hairdryer on low heat or letting the freezer sit unplugged and open for several hours, then test the ice maker again.
- Test the heater electrically by unplugging its harness connector and measuring resistance across the heater terminals with a multimeter (a good heater typically reads in a range of roughly 50 to 800 ohms depending on model, but consult your model’s specifications).
- Replace the ice pipe heater assembly if the meter shows an open circuit (infinite resistance) or if the 33E code returns after thawing and resetting.
- Check the main control board if the new heater also triggers 33E or if you measure correct heater resistance but the code persists, since the board may not be driving the heater circuit.
Parts Often Needed
| Part | Notes |
|---|---|
| Ice pipe heater assembly (fill tube heater) | Amazon | Model-specific part. For some models Samsung DA97-00209Z is correct, but verify your exact model number before ordering. |
| Wiring harness or connector | Amazon | Order only if the existing connector is melted, corroded, or physically damaged and cannot make a solid connection to the heater. |
When to Call a Pro
Call a refrigeration technician if you are not comfortable working inside the freezer compartment, using a multimeter to test electrical components, or identifying the correct replacement heater for your model. Also call if you replace the heater and wiring but the 33E code returns, since that points to a control board fault that requires board-level diagnostics and possibly a new main PCB. If your refrigerator is still under warranty, contact Samsung or an authorized service center before opening any panels.