Ariston Freezers Error Codes

A1

Freezer displays error code A1 and internal temperature is too high; food feels soft or partially thawed.

High Temperature Alarm / Prolonged Door Open Detection

A2

Freezer shows error code A2 and temperature continues to rise despite the compressor attempting to run.

Prolonged High Temperature / Cooling Failure

A3

Freezer displays error code A3 and may intermittently stop cooling or show erratic temperature readings.

Evaporator Temperature Sensor (NTC) Fault

A4

Freezer shows error code A4 and may not maintain the set temperature; display may flash.

Cabinet / Ambient Temperature Sensor Fault

A5

Freezer displays error code A5 and may run continuously or not start defrost cycles correctly.

Defrost Sensor / Heater Circuit Fault

A6

Freezer shows error code A6 and may not respond correctly to temperature adjustments on the control panel.

User Interface / Keypad Communication Error

E1

Freezer displays error code E1 and the temperature reading on the display is clearly incorrect (e.g., shows -18°C but food is soft).

Freezer Compartment Temperature Sensor Error

E2

Freezer shows error code E2 and may not defrost properly, leading to ice buildup on the back wall.

Defrost Sensor / Evaporator Sensor Error

E3

Freezer displays error code E3 and may not start the compressor or may run erratically.

Compressor Start / Relay Circuit Error

E4

Freezer shows error code E4 and may not enter or exit defrost cycles correctly, causing either heavy ice or excessive warming during defrost.

Defrost Circuit Error

E5

Freezer displays error code E5 and the compressor may not run or may shut off quickly after starting.

Compressor Overload / Overtemperature Error

E6

Freezer shows error code E6 and the display or internal lights may flicker or reset intermittently.

Power Supply / Voltage Error

E7

Freezer displays error code E7 and the internal fan may not operate, leading to uneven temperatures.

Evaporator Fan Motor Error

E8

Freezer shows error code E8 and may not respond to temperature setting changes; display may freeze or show dashes.

Main Control Board Communication / Internal Fault

E9

Freezer displays error code E9 and the door alarm may sound even when the door is closed.

Door Switch / Door Sensor Error

F1

Freezer shows error code F1 and may not cool properly; compressor may not start.

Compressor Circuit Fault

F2

Freezer displays error code F2 and the internal temperature may fluctuate widely.

Thermostat / Temperature Regulation Fault

F3

Freezer shows error code F3 and the fast-freeze (super freeze) function does not work correctly.

Fast-Freeze Circuit / Sensor Fault

F4

Freezer displays error code F4 and may show signs of excessive frost or ice on the evaporator.

Defrost System Failure

F5

Freezer shows error code F5 and the internal fan may run at incorrect speeds or not at all.

Fan Speed / Fan Control Error

F6

Freezer displays error code F6 and may not maintain stable temperature; compressor may short-cycle.

Sensor Calibration / Multiple Sensor Error

H1

Freezer shows error code H1 and the high-temperature alarm is active even though the interior feels cold.

High Temperature Sensor Misread

H2

Freezer displays error code H2 and may not enter fast-freeze mode or may overcool.

Low Temperature / Sensor Fault

Symptom

Excessive frost buildup on the back wall or around drawers; frost returns quickly after manual defrost.

Chronic Frost Accumulation

Symptom

Freezer alarm beeping intermittently with no visible error code; temperature appears normal.

Nuisance Alarm / Door or Temperature Alarm

Symptom

Freezer door difficult to open immediately after closing; feels like a vacuum.

Door Vacuum / Pressure Equalization

Symptom

Freezer emits a high-pitched squealing or chirping noise, especially when the door is closed.

Fan Bearing Wear / Motor Noise

Symptom

Freezer has a musty or moldy odor inside.

Internal Odor / Contamination

Symptom

Freezer has a strong chemical, burning, or plastic smell during operation.

Overheating Component / Insulation Odor

Symptom

Freezer interior light not working, but cooling is normal.

Interior Light Failure

Symptom

Freezer interior warm at top but cold at bottom; uneven cooling between shelves or drawers.

Air Circulation / Evaporator Fan Problem

Symptom

Freezer makes loud humming, buzzing, or rattling noises during operation.

Excessive Operational Noise

Symptom

Freezer not cooling at all; interior at room temperature, light may work but no cold air.

Complete Loss of Cooling

Symptom

Freezer overcooling; temperature much lower than set, excessive frost on food.

Thermostat Stuck Closed / Sensor Misreading

Symptom

Freezer produces a knocking or banging sound when the compressor starts or stops.

Compressor Mounting / Refrigerant Line Noise

Symptom

Freezer runs but does not reach set temperature; food is soft or slowly thawing.

Insufficient Cooling / Poor Performance

Symptom

Freezer runs continuously without stopping; compressor always on.

Continuous Run / No Thermostat Cut-Out

Symptom

Freezer short-cycles; compressor starts and stops frequently within a few minutes.

Compressor Short Cycling

Symptom

Freezer trips the circuit breaker or blows fuses when plugged in or when compressor starts.

Electrical Short / Overcurrent

Symptom

Freezer vibrates excessively or moves slightly when the compressor runs.

Excessive Vibration

Symptom

Freezer will not start at all; no lights, no display, no sound.

No Power / Dead Appliance

Symptom

Ice forming around the door frame or on the front edges of the freezer compartment.

Door Seal / Warm Air Ingress

Symptom

Water pooling at the bottom of the freezer compartment or on the floor in front of the unit.

Defrost Drain Blockage / Water Leak