Costway
Costway Freezers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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AL
Display shows AL and an audible alarm sounds intermittently.
General Alarm (Temperature or Door)
dF
Display shows dF or DF periodically; unit may pause cooling briefly.
Defrost Mode Indication (Not a Fault in Many Models)
E1
Digital Costway freezer displays E1 and interior temperature is not accurate or fluctuates wildly.
Cabinet Temperature Sensor (NTC) Failure
E2
Freezer display shows E2 and unit does not defrost properly, frost builds up on the evaporator cover.
Defrost Sensor / Evaporator NTC Failure
E3
Costway upright freezer shows E3 and the compressor cycles erratically or not at all.
Ambient Temperature Sensor Failure
E4
Freezer display shows E4 and unit may not defrost, or defrost heater never energizes.
Defrost Circuit / Defrost Heater Fault
E5
Freezer shows E5 and may shut down or fail to maintain set temperature, often after a power event.
EEPROM / Control Board Memory Error
E6
Display shows E6 and buttons may not respond or temperature cannot be adjusted.
User Interface / Display Panel Communication Error
E7
Freezer shows E7 and interior fan may not run or runs erratically, causing uneven cooling.
Evaporator Fan Motor or Fan Feedback Error
E8
Freezer displays E8 and may not cool properly; compressor may not start or may short-cycle.
Compressor Overload / Start Circuit Error
E9
Freezer shows E9 and interior light or auxiliary circuits may not function correctly.
Low Voltage / Power Supply Error
H1
Display shows H1 or HI and an alarm sounds; interior temperature is too high.
High Temperature Alarm Condition
L1
Display shows L1 or LO and temperature appears too cold or below setpoint.
Low Temperature Alarm Condition
Symptom
Buttons on the freezer control panel do not respond or respond intermittently.
Keypad / Touch Control Failure
Symptom
Condensation or moisture droplets forming on the exterior cabinet or around the door gasket.
Cabinet Condensation
Symptom
Excessive frost buildup on interior walls, baskets, and food packages.
Excessive Frost – Air Infiltration
Symptom
Freezer condenser fan (rear) does not run; compressor is hot and cabinet sides are very warm.
Condenser Fan Not Operating
Symptom
Freezer display is blank or unreadable, but the unit still cools.
Display Module Failure
Symptom
Freezer door does not close or stay closed; it pops open slightly after being shut.
Door Alignment / Seal Failure
Symptom
Freezer door is difficult to open immediately after closing; a vacuum effect is felt.
Door Vacuum / Pressure Equalization
Symptom
Freezer emits a strong chemical, burning, or plastic smell when running.
Overheating Electrical Component or Contaminant
Symptom
Freezer has a strong musty or moldy odor inside.
Interior Odor Contamination
Symptom
Freezer interior fan does not run; cold air is not circulating, leading to uneven temperatures.
Evaporator Fan Not Operating
Symptom
Freezer interior is too cold; food is excessively hard or ice cream is rock solid even at higher settings.
Overcooling – Thermostat or Sensor Out of Calibration
Symptom
Freezer interior light does not turn on when door is opened, but cooling is normal.
Interior Light Circuit Failure
Symptom
Freezer makes a high-pitched squealing or chirping noise from inside the cabinet.
Evaporator Fan Motor Bearing Wear
Symptom
Freezer makes loud humming or buzzing noise from the back, especially when starting.
Compressor or Condenser Fan Noise
Symptom
Freezer makes loud knocking or banging noises when the compressor starts or stops.
Refrigerant Line or Compressor Mount Vibration
Symptom
Freezer not cooling at all; interior is warm and compressor is not running.
No Cooling – Compressor Not Starting
Symptom
Freezer not running at all; no lights, no display, completely dead.
No Power – Input Power or Main Fuse Failure
Symptom
Freezer runs but does not get cold enough; compressor and fan operate continuously but temperature stays above freezing.
Weak Cooling – Possible Sealed System Issue
Symptom
Freezer runs constantly and never shuts off, but temperature is acceptable.
Continuous Run – Control or Air Leak Issue
Symptom
Freezer temperature fluctuates widely; some days too warm, other days too cold.
Inconsistent Temperature Control
Symptom
Freezer trips the household circuit breaker or GFCI outlet when it starts.
Electrical Overload or Ground Fault
Symptom
Freezer vibrates excessively or rattles against the floor or nearby cabinets.
Cabinet Vibration / Leveling Issue
Symptom
Thick sheet of ice forming on the evaporator cover or behind the rear interior panel.
Defrost System Failure
Symptom
Water or ice buildup on the bottom inside of the freezer compartment.
Internal Leak – Blocked Defrost Drain
Symptom
Water pooling on the floor under or around the freezer.
External Water Leak / Drain Pan Overflow
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| AL |
Display shows AL and an audible alarm sounds intermittently.
|
General Alarm (Temperature or Door) | View Details |
| dF |
Display shows dF or DF periodically; unit may pause cooling briefly.
|
Defrost Mode Indication (Not a Fault in Many Models) | View Details |
| E1 |
Digital Costway freezer displays E1 and interior temperature is not accurate or fluctuates wildly.
|
Cabinet Temperature Sensor (NTC) Failure | View Details |
| E2 |
Freezer display shows E2 and unit does not defrost properly, frost builds up on the evaporator cover.
|
Defrost Sensor / Evaporator NTC Failure | View Details |
| E3 |
Costway upright freezer shows E3 and the compressor cycles erratically or not at all.
|
Ambient Temperature Sensor Failure | View Details |
| E4 |
Freezer display shows E4 and unit may not defrost, or defrost heater never energizes.
|
Defrost Circuit / Defrost Heater Fault | View Details |
| E5 |
Freezer shows E5 and may shut down or fail to maintain set temperature, often after a power event.
|
EEPROM / Control Board Memory Error | View Details |
| E6 |
Display shows E6 and buttons may not respond or temperature cannot be adjusted.
|
User Interface / Display Panel Communication Error | View Details |
| E7 |
Freezer shows E7 and interior fan may not run or runs erratically, causing uneven cooling.
|
Evaporator Fan Motor or Fan Feedback Error | View Details |
| E8 |
Freezer displays E8 and may not cool properly; compressor may not start or may short-cycle.
|
Compressor Overload / Start Circuit Error | View Details |
| E9 |
Freezer shows E9 and interior light or auxiliary circuits may not function correctly.
|
Low Voltage / Power Supply Error | View Details |
| H1 |
Display shows H1 or HI and an alarm sounds; interior temperature is too high.
|
High Temperature Alarm Condition | View Details |
| L1 |
Display shows L1 or LO and temperature appears too cold or below setpoint.
|
Low Temperature Alarm Condition | View Details |
| – |
Buttons on the freezer control panel do not respond or respond intermittently.
|
Keypad / Touch Control Failure | View Details |
| – |
Condensation or moisture droplets forming on the exterior cabinet or around the door gasket.
|
Cabinet Condensation | View Details |
| – |
Excessive frost buildup on interior walls, baskets, and food packages.
|
Excessive Frost – Air Infiltration | View Details |
| – |
Freezer condenser fan (rear) does not run; compressor is hot and cabinet sides are very warm.
|
Condenser Fan Not Operating | View Details |
| – |
Freezer display is blank or unreadable, but the unit still cools.
|
Display Module Failure | View Details |
| – |
Freezer door does not close or stay closed; it pops open slightly after being shut.
|
Door Alignment / Seal Failure | View Details |
| – |
Freezer door is difficult to open immediately after closing; a vacuum effect is felt.
|
Door Vacuum / Pressure Equalization | View Details |
| – |
Freezer emits a strong chemical, burning, or plastic smell when running.
|
Overheating Electrical Component or Contaminant | View Details |
| – |
Freezer has a strong musty or moldy odor inside.
|
Interior Odor Contamination | View Details |
| – |
Freezer interior fan does not run; cold air is not circulating, leading to uneven temperatures.
|
Evaporator Fan Not Operating | View Details |
| – |
Freezer interior is too cold; food is excessively hard or ice cream is rock solid even at higher settings.
|
Overcooling – Thermostat or Sensor Out of Calibration | View Details |
| – |
Freezer interior light does not turn on when door is opened, but cooling is normal.
|
Interior Light Circuit Failure | View Details |
| – |
Freezer makes a high-pitched squealing or chirping noise from inside the cabinet.
|
Evaporator Fan Motor Bearing Wear | View Details |
| – |
Freezer makes loud humming or buzzing noise from the back, especially when starting.
|
Compressor or Condenser Fan Noise | View Details |
| – |
Freezer makes loud knocking or banging noises when the compressor starts or stops.
|
Refrigerant Line or Compressor Mount Vibration | View Details |
| – |
Freezer not cooling at all; interior is warm and compressor is not running.
|
No Cooling – Compressor Not Starting | View Details |
| – |
Freezer not running at all; no lights, no display, completely dead.
|
No Power – Input Power or Main Fuse Failure | View Details |
| – |
Freezer runs but does not get cold enough; compressor and fan operate continuously but temperature stays above freezing.
|
Weak Cooling – Possible Sealed System Issue | View Details |
| – |
Freezer runs constantly and never shuts off, but temperature is acceptable.
|
Continuous Run – Control or Air Leak Issue | View Details |
| – |
Freezer temperature fluctuates widely; some days too warm, other days too cold.
|
Inconsistent Temperature Control | View Details |
| – |
Freezer trips the household circuit breaker or GFCI outlet when it starts.
|
Electrical Overload or Ground Fault | View Details |
| – |
Freezer vibrates excessively or rattles against the floor or nearby cabinets.
|
Cabinet Vibration / Leveling Issue | View Details |
| – |
Thick sheet of ice forming on the evaporator cover or behind the rear interior panel.
|
Defrost System Failure | View Details |
| – |
Water or ice buildup on the bottom inside of the freezer compartment.
|
Internal Leak – Blocked Defrost Drain | View Details |
| – |
Water pooling on the floor under or around the freezer.
|
External Water Leak / Drain Pan Overflow | View Details |
No matching codes found
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