OEM VERIFIED BENCH

OFFICIAL FAULT CODEE6900

Bosch // OFFICIAL DIAGNOSTIC BENCH

Bosch E6900

DishwasherDrainage System & Drain Pump

Dishwasher

Other Brands Sharing Code E6900:SiemensE6900 NeffE6900 GaggenauE6900

Symptom / Description

FAULT

Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Main inverter power module hardware fault E6900; internal DC bus voltage regulator or gate driver IC failure.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

On Bosch dishwashers: Blown switch-mode power supply (SMPS) controller chip, failed DC bus filter capacitors, or shorted inverter IGBT bridge.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

1Disconnect mains power. Remove and inspect power module located in lower base. Check for scorched components or ruptured ICs. Replace power module. Hold Start/Reset key for 3 seconds until '0:01' appears, close door, allow 60s for drain completion, then power off.

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 Bosch 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 PumpDishwasher

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: Bosch E6900

FAQ TREE

What does error code E6900 mean on a Bosch appliance?

Bosch error code E6900 indicates: Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Main inverter power module hardware fault E6900; internal DC bus voltage regulator or gate driver IC failure..

What is the root cause of Bosch error code E6900?

The primary root cause for Bosch code E6900 is: On Bosch dishwashers: Blown switch-mode power supply (SMPS) controller chip, failed DC bus filter capacitors, or shorted inverter IGBT bridge..

How do I fix or resolve Bosch error code E6900?

To resolve error code E6900: Disconnect mains power. Remove and inspect power module located in lower base. Check for scorched components or ruptured ICs. Replace power module. Hold Start/Reset key for 3 seconds until '0:01' appears, close door, allow 60s for drain completion, then power off.

Is it safe to clear Bosch error code E6900 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Bosch code E6900 persists, the physical component causing On Bosch dishwashers: Blown switch-mode power supply (SMPS) controller chip, failed DC bus filter capacitors, or shorted inverter IGBT bridge. must be inspected or replaced.

How do I test electrical resistance for Bosch code E6900 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 Bosch code E6900?

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.

Community Verification

COMMUNITY

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OEM VERIFIED BENCH

OFFICIAL FAULT CODEE6900

Bosch // OFFICIAL DIAGNOSTIC BENCH

Bosch E6900

DishwasherDrainage System & Drain Pump

Dishwasher

Other Brands Sharing Code E6900:SiemensE6900 NeffE6900 GaggenauE6900

Symptom / Description

FAULT

Bosch Serie 4 / Serie 6 / Serie 8 ActiveWater & PerfectDry Zeolith: Main inverter power module hardware fault E6900; internal DC bus voltage regulator or gate driver IC failure.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

On Bosch dishwashers: Blown switch-mode power supply (SMPS) controller chip, failed DC bus filter capacitors, or shorted inverter IGBT bridge.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED

AI WORKSHOP PROTOCOL ENGINE

Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH

Need Help? Call a Certified Technician Worldwide Bosch 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 PumpDishwasher

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: Bosch E6900

FAQ TREE

What does error code E6900 mean on a Bosch appliance?

What is the root cause of Bosch error code E6900?

The primary root cause for Bosch code E6900 is: On Bosch dishwashers: Blown switch-mode power supply (SMPS) controller chip, failed DC bus filter capacitors, or shorted inverter IGBT bridge..

How do I fix or resolve Bosch error code E6900?

Is it safe to clear Bosch error code E6900 by resetting power?

How do I test electrical resistance for Bosch code E6900 using a multimeter?

What safety protocol must be followed before servicing Bosch code E6900?

Community Verification

COMMUNITY

Did this solution resolve the issue?

Bosch E6900

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Bosch E6900

Community Verification

Related Bosch Dishwasher Error Codes

Bosch E6900

Symptom / Description

Root Cause

Repair Instructions

Field Actions

Workshop Verification & Safety Checklist

Frequently Asked Questions: Bosch E6900

Community Verification

Related Bosch Dishwasher Error Codes