OEM VERIFIED BENCH

OFFICIAL FAULT CODEAL02

Rosieres // OFFICIAL DIAGNOSTIC BENCH

Rosieres AL02

Q: What does error code AL02 mean on a Rosieres appliance?

Rosieres error code AL02 indicates: Rosieres AL02: Cooling circuit or defrost system anomaly in Refrigerator / Freezer; compartment temperature deviation..

Q: What is the root cause of Rosieres error code AL02?

The primary root cause for Rosieres code AL02 is: The sensor attached to the evaporator coil (part of the cooling system) is faulty..

Q: How do I fix or resolve Rosieres error code AL02?

To resolve error code AL02: This sensor is involved in the defrost cycle. It will need to be accessed and replaced by a service technician.

Q: Is it safe to clear Rosieres error code AL02 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Rosieres code AL02 persists, the physical component causing The sensor attached to the evaporator coil (part of the cooling system) is faulty. must be inspected or replaced.

Q: How do I test electrical resistance for Rosieres code AL02 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test Compressor Motor Windings (Run/Start) & Defrost Heater across Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).. Expected nominal reading is 15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.. Tolerance: ±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero..

Q: What safety protocol must be followed before servicing Rosieres code AL02?

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.

RefrigeratorRefrigeration Compressor, Defrost Heater & PTC Relay

Refrigerator

Other Brands Sharing Code AL02:MieleAL02 BauknechtAL02 V-ZugAL02 De DietrichAL02 LiebherrAL02 GaggenauAL02 SchulthessAL02 FAGORAL02 SauterAL02 AtlanticAL02

Symptom / Description

FAULT

Rosieres AL02: Cooling circuit or defrost system anomaly in Refrigerator / Freezer; compartment temperature deviation.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The sensor attached to the evaporator coil (part of the cooling system) is faulty.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1This sensor is involved in the defrost cycle. It will need to be accessed and replaced by a service technician.

AI diagnostic workshop engine analyzing appliance circuit schematics and error telemetry in real time

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Rosieres Parts Finder

Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLRefrigeration Compressor, Defrost Heater & PTC RelayRefrigerator / Freezer

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

Precision digital multimeter probes measuring electrical resistance in Ohms on an appliance control board

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:Compressor Motor Windings (Run/Start) & Defrost Heater

Test Pins & Connections

PROBE (+)

PROBE (-)

Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).

Tolerance & Diagnostic Criteria±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero.

1. Pre-Intervention Electrical Safety Protocols

!Refrigeration Safety Protocol: Disconnect mains power before unclipping compressor terminal covers.
!Flammable Refrigerant Warning: R600a (isobutane) is flammable. Never puncture cooling tubes or use open flame.
!High Surface Temperature: Compressor shell can exceed 80°C during normal operation. Allow to cool before inspection.

3. Preliminary Mechanical & Visual Checks

Listen for compressor startup attempts: repetitive clicking every 60 seconds indicates locked rotor or failed PTC relay.
Inspect evaporator coil for thick solid frost buildup, signaling defrost heater, sensor, or timer failure.
Clean condenser coils and check cooling fan motor for free rotation and dust accumulation.

Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Rosieres AL02

FAQ TREE

What does error code AL02 mean on a Rosieres appliance?

Rosieres error code AL02 indicates: Rosieres AL02: Cooling circuit or defrost system anomaly in Refrigerator / Freezer; compartment temperature deviation..

What is the root cause of Rosieres error code AL02?

The primary root cause for Rosieres code AL02 is: The sensor attached to the evaporator coil (part of the cooling system) is faulty..

How do I fix or resolve Rosieres error code AL02?

To resolve error code AL02: This sensor is involved in the defrost cycle. It will need to be accessed and replaced by a service technician.

Is it safe to clear Rosieres error code AL02 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Rosieres code AL02 persists, the physical component causing The sensor attached to the evaporator coil (part of the cooling system) is faulty. must be inspected or replaced.

How do I test electrical resistance for Rosieres code AL02 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test Compressor Motor Windings (Run/Start) & Defrost Heater across Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).. Expected nominal reading is 15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.. Tolerance: ±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero..

What safety protocol must be followed before servicing Rosieres code AL02?

Standard electrical safety protocol: 1. Disconnect 230V mains power before opening panels. 2. Verify zero voltage at test points. 3. Allow hot water or heating elements to cool below 30°C before handling.

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OEM VERIFIED BENCH

OFFICIAL FAULT CODEAL02

Rosieres // OFFICIAL DIAGNOSTIC BENCH

Rosieres AL02

RefrigeratorRefrigeration Compressor, Defrost Heater & PTC Relay

Refrigerator

Other Brands Sharing Code AL02:MieleAL02 BauknechtAL02 V-ZugAL02 De DietrichAL02 LiebherrAL02 GaggenauAL02 SchulthessAL02 FAGORAL02 SauterAL02 AtlanticAL02

Symptom / Description

FAULT

Rosieres AL02: Cooling circuit or defrost system anomaly in Refrigerator / Freezer; compartment temperature deviation.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The sensor attached to the evaporator coil (part of the cooling system) is faulty.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1This sensor is involved in the defrost cycle. It will need to be accessed and replaced by a service technician.

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Rosieres Parts Finder

Electrical & Safety Protocol

Always disconnect appliance from 230V/400V mains before opening panels. Use CAT III multimeter for circuit testing.

CALIBRATED BENCH PROTOCOL // CAT III 600V

Workshop Verification & Safety Checklist

WORKSHOP VERIFICATION PROTOCOLRefrigeration Compressor, Defrost Heater & PTC RelayRefrigerator / Freezer

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

15Ω–25Ω (Run C-R), 20Ω–35Ω (Start C-S), 200Ω–400Ω (Defrost Heater). PTC Relay: 10Ω–30Ω at 25°C.NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:Compressor Motor Windings (Run/Start) & Defrost Heater

Test Pins & Connections

PROBE (+)

PROBE (-)

Across 3 compressor pins (Common, Run, Start): R(C-S) + R(C-R) = R(S-R). Winding to earth: >20MΩ (OL).

Tolerance & Diagnostic Criteria±10%. Any low insulation resistance to casing (<2MΩ) trips the breaker. Defrost bimetal reads <0.5Ω when sub-zero.

1. Pre-Intervention Electrical Safety Protocols

!Refrigeration Safety Protocol: Disconnect mains power before unclipping compressor terminal covers.
!Flammable Refrigerant Warning: R600a (isobutane) is flammable. Never puncture cooling tubes or use open flame.
!High Surface Temperature: Compressor shell can exceed 80°C during normal operation. Allow to cool before inspection.

3. Preliminary Mechanical & Visual Checks

Listen for compressor startup attempts: repetitive clicking every 60 seconds indicates locked rotor or failed PTC relay.
Inspect evaporator coil for thick solid frost buildup, signaling defrost heater, sensor, or timer failure.
Clean condenser coils and check cooling fan motor for free rotation and dust accumulation.

Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Rosieres AL02

FAQ TREE

What does error code AL02 mean on a Rosieres appliance?

Rosieres error code AL02 indicates: Rosieres AL02: Cooling circuit or defrost system anomaly in Refrigerator / Freezer; compartment temperature deviation..

What is the root cause of Rosieres error code AL02?

The primary root cause for Rosieres code AL02 is: The sensor attached to the evaporator coil (part of the cooling system) is faulty..

How do I fix or resolve Rosieres error code AL02?

To resolve error code AL02: This sensor is involved in the defrost cycle. It will need to be accessed and replaced by a service technician.

Is it safe to clear Rosieres error code AL02 by resetting power?

How do I test electrical resistance for Rosieres code AL02 using a multimeter?

What safety protocol must be followed before servicing Rosieres code AL02?

Community Verification

COMMUNITY

Did this solution resolve the issue?

Rosieres AL02

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Rosieres AL02

Community Verification

Related Rosieres Refrigerator / Freezer Error Codes

Rosieres AL02

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Rosieres AL02

Community Verification

Related Rosieres Refrigerator / Freezer Error Codes