Refrigerator Fault Codes by Brand (Reference)
Why this matters
A tech walking up to a refrigerator with the display flashing "ER FF" or "CH 3-3" who can interpret the code in 5 seconds is a closer; one who pulls out the iPad and Googles is a journeyman. Brand-specific fault codes are a memorization investment that pays off every service call. The major US-market brands (Whirlpool, GE, Samsung, LG, Frigidaire, KitchenAid, Kenmore, Bosch, Sub-Zero, Viking) each use distinct code conventions; sharing a "common error codes" reference does not capture the brand specificity. This reference covers the most-encountered codes for each brand with the underlying root-cause family so the tech reads the code and forms a diagnostic hypothesis before opening the toolbox.
How to read a fault code
Most modern refrigerators surface fault codes through:
- Display panel (text or numeric code)
- LED blink pattern (count blinks)
- Service-mode entry (specific button sequence to display history)
- Dedicated diagnostic mode (technician menu)
Service-mode entry varies by brand; most manuals document it but customers do not know how. Carrying the brand's service-mode sequences in your phone notes accelerates first diagnosis.
Whirlpool (also KitchenAid, Maytag, Amana, JennAir)
Whirlpool platform refrigerators (including post-2006 KitchenAid and Maytag) typically share fault codes. Common codes:
| Code | Meaning | Likely fix |
|---|---|---|
| F1 E1 | Main control board failure | Replace main control |
| F2 E0 | Communication error between user interface and main board | Check ribbon cable; reseat or replace |
| F4 E1 | Freezer temperature sensor open | Replace freezer thermistor |
| F4 E2 | Freezer temperature sensor short | Replace freezer thermistor |
| F5 E1 | Refrigerator temperature sensor open | Replace refrigerator thermistor |
| F5 E2 | Refrigerator temperature sensor short | Replace refrigerator thermistor |
| F6 E1 | Evaporator fan motor fault | Replace evaporator fan |
| F8 E1 | Compressor / sealed-system fault | Diagnose sealed system; may be inverter board |
| FE E0 | Damper control fault (between freezer and refrigerator section) | Replace damper assembly |
| PO | Power outage detected; food may have warmed | Inform customer; check temperatures |
| 88 | Demo / showroom mode | Exit demo mode via panel sequence |
Service-mode entry on most Whirlpool: hold "freezer" + "refrigerator" temperature buttons for 5 seconds, or "filter reset" + "lock" for 3 seconds.
GE / Hotpoint / Profile
GE refrigerators use a numeric code typically displayed as "tH" temperature variation or as a numeric fault. The Adora and Profile models use a more verbose codepath:
| Code | Meaning | Likely fix |
|---|---|---|
| dE | Defrost system fault | Defrost heater, defrost thermostat, defrost timer / board |
| FF | Freezer fan fault | Replace evaporator fan |
| Sy CE | System communication error | Main board to UI ribbon cable; reseat |
| OF F | Off-mode active or display dimmed | Press "lighting" button to wake |
| OPEN | Door switch failure or door left open | Verify door closed, check door switch |
| HR S | Hot air sensor (in freezer) | Replace sensor |
| 1-5 (Profile) | Specific subsystem fault | Cross-reference with service manual |
Service-mode entry on GE: typically hold "freezer temp adjust up + down" for 5 seconds.
Samsung
Samsung refrigerator codes follow "letter + number" patterns. Common codes:
| Code | Meaning | Likely fix |
|---|---|---|
| 21 E (or "E 21") | Freezer fan fault | Check fan for ice blockage; replace fan |
| 22 E | Refrigerator fan fault | Same diagnostic; check for ice |
| 23 E | Condenser fan fault | Clean condenser; check fan |
| 24 E | Defrost system fault | Defrost heater, defrost sensor |
| 25 E | Defrost sensor fault | Replace defrost sensor |
| 26 E | Ice maker fan fault (FlexZone / Twin Cooling) | Specific to that section |
| 27 E | Auger motor (ice maker) | Replace auger motor |
| 5 E | Defrost system fault (older) | Same as 24 E |
| 8 E (or "E 8") | Ice maker fault | Multiple causes; consult chart |
| 39 E | Communication error | Main board to UI |
| 41 C | Ice room temperature sensor | Replace sensor |
| 84 C | Refrigerant valve fault (Twin Cooling) | Specific to FlexZone models |
| PC OFF | Power-cool mode disabled | Customer reset |
Service-mode entry on most Samsung: press "Power Cool" + "Freezer" for 5 seconds. Models vary; check the model-specific manual.
LG
LG uses "ER" prefix codes. Common:
| Code | Meaning | Likely fix |
|---|---|---|
| ER CF | Condenser fan fault | Clean condenser, replace fan |
| ER CO | Communication error to compressor | Inverter board, compressor wiring |
| ER dH | Defrost heater fault | Replace defrost heater |
| ER dS | Defrost sensor open | Replace defrost sensor |
| ER FF | Freezer fan fault | Replace evaporator fan |
| ER FS | Freezer sensor fault | Replace freezer thermistor |
| ER gF | Gas leak (compressor) | Sealed-system service |
| ER HS | Humidity sensor fault | Replace humidity sensor |
| ER IF | Ice maker fan fault | Replace ice maker fan |
| ER rF | Refrigerator fan fault | Replace refrigerator fan |
| ER rS | Refrigerator sensor fault | Replace refrigerator thermistor |
| ER tT | Time-tracking error (defrost) | Inverter or main board |
Service-mode entry on LG: press "Refrigerator" + "Ice Plus" buttons for 5 seconds.
Frigidaire / Electrolux
Frigidaire codes typically display as "SY EF" or similar. Common:
| Code | Meaning | Likely fix |
|---|---|---|
| SY CE | System communication error | Main board / UI |
| SY EF | Evaporator fan failure | Replace fan |
| SY CF | Condenser fan failure | Clean and check |
| H1 | High freezer temperature | Compressor / sealed system |
| H2 | High refrigerator temperature | Refrigerator-side issue |
| L1 | Low freezer temperature (over-freezing) | Damper, thermistor calibration |
| Sn | Sensor failure (generic) | Resistance-test thermistors |
| OPEN | Door left open warning | Customer notification |
Bosch / Thermador
Bosch refrigerators use "E" + number codes. Bosch is more conservative with fault codes; many faults trigger a generic "service required" lamp rather than a specific code.
| Code | Meaning | Likely fix |
|---|---|---|
| E1 | Temperature sensor refrigerator | Replace sensor |
| E2 | Temperature sensor freezer | Replace sensor |
| E3 | Defrost system | Heater, sensor, timer |
| E5 | Compressor fault | Sealed-system service |
| E6 | Fan fault | Replace fan |
| E7 | Door sensor / ambient | Check door switch / replace ambient sensor |
References
- Whirlpool / KitchenAid / Maytag service manuals (whirlpoolservicemanuals.com or similar OEM portal).
- GE Appliances service manuals (geapplianceparts.com / mygehomeenergy.com).
- Samsung Appliances service manual portal.
- LG service training material.
- Frigidaire / Electrolux service literature.
- Bosch / Thermador service materials.
- Sub-Zero service manual portal (sub-zero.com).
- ApplianceFactoryParts.com or RepairClinic.com (third-party reference cross-checks).
- Manuall internal: Appliance Repair Common Error Codes, Appliance Repair Refrigerator Not Cooling, Appliance Repair Refrigerator Noise Diagnostic.