OEM VERIFIED BENCH

OFFICIAL FAULT CODEE21

H-Koenig // OFFICIAL DIAGNOSTIC BENCH

H-Koenig E21

Washing MachineDrainage System & Drain Pump

Washing Machine

Other Brands Sharing Code E21:BoschE21 SiemensE21 ElectroluxE21 AEGE21 HaierE21 CandyE21 NeffE21 HooverE21 ZanussiE21 Arthur MartinE21

Symptom / Description

FAULT

H-Koenig E21: Water drainage failure detected in Washing Machine; drain pump cannot evacuate water within safety time limit.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The water is draining too slowly. This is a more specific drain fault than E03, indicating a partial blockage or weak pump.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1Perform a thorough cleaning of the pump filter, sump hose (connecting drum to pump), and the drain hose. Check the pump impeller for obstructions.

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 H-Koenig 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 PROTOCOLDrainage System & Drain PumpWashing Machine

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)

160Ω–220Ω (Sync 230V) / 20Ω–45Ω (3-Phase BLDC)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:Drain Pump Motor Stator Coils

Test Pins & Connections

PROBE (+)

PROBE (-)

Across pump motor spade terminals (L-N unclipped)

Tolerance & Diagnostic Criteria±10% balance. Insulation resistance between coil and motor chassis must exceed 20MΩ.

1. Pre-Intervention Electrical Safety Protocols

!Electrical Safety Protocol: Isolate 230V mains power before accessing the lower pump housing.
!Prepare a shallow basin and absorption towels: expect 3 to 10 liters of stagnant trapped water upon filter opening.
!Beware of sharp foreign objects (broken glass, needles, screws) trapped inside the impeller cavity.

3. Preliminary Mechanical & Visual Checks

Unscrew coin trap filter and clear all foreign debris (coins, hairpins, bra underwires).
Rotate pump impeller manually: synchronous magnetic rotors should snap cleanly in 90° intervals without jamming.
Check drain hose for kinks, blockages, or unpunched sink spigots; verify drain height is between 65cm and 100cm.

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

Frequently Asked Questions: H-Koenig E21

FAQ TREE

What does error code E21 mean on a H-Koenig appliance?

H-Koenig error code E21 indicates: H-Koenig E21: Water drainage failure detected in Washing Machine; drain pump cannot evacuate water within safety time limit..

What is the root cause of H-Koenig error code E21?

The primary root cause for H-Koenig code E21 is: The water is draining too slowly. This is a more specific drain fault than E03, indicating a partial blockage or weak pump..

How do I fix or resolve H-Koenig error code E21?

To resolve error code E21: Perform a thorough cleaning of the pump filter, sump hose (connecting drum to pump), and the drain hose. Check the pump impeller for obstructions.

Is it safe to clear H-Koenig error code E21 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if H-Koenig code E21 persists, the physical component causing The water is draining too slowly. This is a more specific drain fault than E03, indicating a partial blockage or weak pump. must be inspected or replaced.

How do I test electrical resistance for H-Koenig code E21 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test Drain Pump Motor Stator Coils across Across pump motor spade terminals (L-N unclipped). Expected nominal reading is 160Ω–220Ω (Sync 230V) / 20Ω–45Ω (3-Phase BLDC). Tolerance: ±10% balance. Insulation resistance between coil and motor chassis must exceed 20MΩ..

What safety protocol must be followed before servicing H-Koenig code E21?

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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COMMUNITY

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OEM VERIFIED BENCH

OFFICIAL FAULT CODEE21

H-Koenig // OFFICIAL DIAGNOSTIC BENCH

H-Koenig E21

Washing MachineDrainage System & Drain Pump

Washing Machine

Other Brands Sharing Code E21:BoschE21 SiemensE21 ElectroluxE21 AEGE21 HaierE21 CandyE21 NeffE21 HooverE21 ZanussiE21 Arthur MartinE21

Symptom / Description

FAULT

H-Koenig E21: Water drainage failure detected in Washing Machine; drain pump cannot evacuate water within safety time limit.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The water is draining too slowly. This is a more specific drain fault than E03, indicating a partial blockage or weak pump.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1Perform a thorough cleaning of the pump filter, sump hose (connecting drum to pump), and the drain hose. Check the pump impeller for obstructions.

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide H-Koenig 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 PROTOCOLDrainage System & Drain PumpWashing Machine

2. Multimeter & Electrical Bench Tests (Ω)

MODE: OHMMETER (Ω)AUTO-RANGE

CALIBRATED METROLOGY RESISTANCE BENCH (CAT III)

Nominal Resistance (Ω)

160Ω–220Ω (Sync 230V) / 20Ω–45Ω (3-Phase BLDC)NOMINAL

0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)

▲ NOMINAL OPERATING WINDOW

Target Component:Drain Pump Motor Stator Coils

Test Pins & Connections

PROBE (+)

PROBE (-)

Across pump motor spade terminals (L-N unclipped)

Tolerance & Diagnostic Criteria±10% balance. Insulation resistance between coil and motor chassis must exceed 20MΩ.

1. Pre-Intervention Electrical Safety Protocols

!Electrical Safety Protocol: Isolate 230V mains power before accessing the lower pump housing.
!Prepare a shallow basin and absorption towels: expect 3 to 10 liters of stagnant trapped water upon filter opening.
!Beware of sharp foreign objects (broken glass, needles, screws) trapped inside the impeller cavity.

3. Preliminary Mechanical & Visual Checks

Unscrew coin trap filter and clear all foreign debris (coins, hairpins, bra underwires).
Rotate pump impeller manually: synchronous magnetic rotors should snap cleanly in 90° intervals without jamming.
Check drain hose for kinks, blockages, or unpunched sink spigots; verify drain height is between 65cm and 100cm.

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

Frequently Asked Questions: H-Koenig E21

FAQ TREE

What does error code E21 mean on a H-Koenig appliance?

H-Koenig error code E21 indicates: H-Koenig E21: Water drainage failure detected in Washing Machine; drain pump cannot evacuate water within safety time limit..

What is the root cause of H-Koenig error code E21?

The primary root cause for H-Koenig code E21 is: The water is draining too slowly. This is a more specific drain fault than E03, indicating a partial blockage or weak pump..

How do I fix or resolve H-Koenig error code E21?

To resolve error code E21: Perform a thorough cleaning of the pump filter, sump hose (connecting drum to pump), and the drain hose. Check the pump impeller for obstructions.

Is it safe to clear H-Koenig error code E21 by resetting power?

How do I test electrical resistance for H-Koenig code E21 using a multimeter?

What safety protocol must be followed before servicing H-Koenig code E21?

Community Verification

COMMUNITY

Did this solution resolve the issue?

H-Koenig E21

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: H-Koenig E21

Community Verification

Related H-Koenig Washing Machine Error Codes

H-Koenig E21

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: H-Koenig E21

Community Verification

Related H-Koenig Washing Machine Error Codes