Skip to content
CodesErreur.comSWISS PRO ENGINE
Core Diagnostics
DiagnosticsBrandsOEM ManualsSpecialistsAI EngineerPRO
Workshop Tools
Diagnostic ToolsNEW
Hardware interfaces & test probes
Find Rating Plate
Locate exact E-Nr, PNC & serial codes
Parts Locator
Global OEM spare parts suppliers
Community & Career
Academy & Courses
Masterclasses by senior technicians
Certification ExamsPRO
Verify your B2B technical credentials
Elite Forum
Peer-to-peer field troubleshooting
Tech Jobs
B2B recruitment & field opportunities
Leaderboard
Global ranking of verified specialists
Certified Appliance Engineering EcosystemApply for Certification →
Language Selector
Account & Access
Upgrade PRO
Back to Search
OEM VERIFIED BENCH
OFFICIAL FAULT CODEF3
De-Longhi
De-Longhi // OFFICIAL DIAGNOSTIC BENCH

De-Longhi F3

DishwasherNTC Temperature Sensor & Thermistor
Premium built-in dishwasher with open illuminated stainless steel interior and precision spray arms
Dishwasher
Other Brands Sharing Code F3:BoschF3MieleF3SiemensF3SamsungF-3LGF3WhirlpoolF3ElectroluxF3AEGF3BekoF3IndesitF3

Symptom / Description

FAULT

De-Longhi F3: NTC temperature sensor signal out of range (open or short circuit) in Dishwasher.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The dishwasher is unable to heat the water to the required temperature in the specified time. This could be due to a faulty heating element, a faulty temperature sensor (NTC), or wiring issues.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED
1Test the heating element for continuity. Check the NTC sensor for correct resistance values. Inspect wiring to the heater and sensor.
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 TechnicianWorldwide De-Longhi 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 PROTOCOLNTC Temperature Sensor & ThermistorDishwasher
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)
4.8kΩ–12kΩ (at 20°C–25°C)NOMINAL
0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)
▲ NOMINAL OPERATING WINDOW
Target Component:NTC Temperature Sensor Probe (Thermistor)
Test Pins & Connections
PROBE (+)
PROBE (-)
Across sensor pins 1-2 (unplugged harness)
Tolerance & Diagnostic CriteriaNegative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit.
1. Pre-Intervention Electrical Safety Protocols
  • !Electrical Safety Protocol: Disconnect 230V electrical mains power before removing appliance side or rear panels.
  • !Ensure tub water or heating chamber has cooled below 30°C before unclipping thermistor probe.
  • !Use CAT III 600V/1000V insulated test probes when tng at PCB edge connectors.
3. Preliminary Mechanical & Visual Checks
  • Inspect sensor immersion sleeve for calcification, limescale scale, or thermal paste degradation.
  • Check wiring harness for pinch points, chafing against chassis metal, and terminal pin oxidation.
  • Verify probe is firmly seated in its rubber grommet or bracket inside the water/air circuit.
Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: De-Longhi F3

FAQ TREE
What does error code F3 mean on a De-Longhi appliance?

De-Longhi error code F3 indicates: De-Longhi F3: NTC temperature sensor signal out of range (open or short circuit) in Dishwasher..

What is the root cause of De-Longhi error code F3?

The primary root cause for De-Longhi code F3 is: The dishwasher is unable to heat the water to the required temperature in the specified time. This could be due to a faulty heating element, a faulty temperature sensor (NTC), or wiring issues..

How do I fix or resolve De-Longhi error code F3?

To resolve error code F3: Test the heating element for continuity. Check the NTC sensor for correct resistance values. Inspect wiring to the heater and sensor.

Is it safe to clear De-Longhi error code F3 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if De-Longhi code F3 persists, the physical component causing The dishwasher is unable to heat the water to the required temperature in the specified time. This could be due to a faulty heating element, a faulty temperature sensor (NTC), or wiring issues. must be inspected or replaced.

How do I test electrical resistance for De-Longhi code F3 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test NTC Temperature Sensor Probe (Thermistor) across Across sensor pins 1-2 (unplugged harness). Expected nominal reading is 4.8kΩ–12kΩ (at 20°C–25°C). Tolerance: Negative temperature coefficient: resistance drops smoothly when warmed with fingers. OL = open circuit..

What safety protocol must be followed before servicing De-Longhi code F3?

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

Did this solution resolve the issue?

SEMANTIC KNOWLEDGE GRAPH // DE-LONGHI

Related De-Longhi Dishwasher Error Codes

Diagnostic Link Mesh14 OEM Cross-References

Cross-referenced diagnostic codes for technicians inspecting similar component subsystems.

F3E0NTC Temperature Sensor & Thermistor
Oven temperature sensor open circuit
Inspect Protocol
F4E0NTC Temperature Sensor & Thermistor
Oven temperature sensor short circuit
Inspect Protocol
F5Water Level Pressure Switch & Air Dome
De-Longhi F5: Water inlet / filling timeout in Dishwasher; appliance fails to fill to minimu...
Inspect Protocol
F6NTC Temperature Sensor & Thermistor
Temperature sensor (NTC) error
Inspect Protocol
F8Heating Element, Thermostat & Safety Fuse
De-Longhi F8: Water/air heating failure in Dishwasher; heating circuit does not reach set te...
Inspect Protocol
F8E0NTC Temperature Sensor & Thermistor
De-Longhi F8E0: NTC temperature sensor signal out of range (open or short circuit) in Oven /...
Inspect Protocol
F9Drive Motor, Inverter & Tachometer Sensor
Diverter valve position error
Inspect Protocol
E01Door Lock Mechanism & Safety Interlock
De-Longhi E01: Door lock safety interlock fault in Washing Machine; door switch contact fail...
Inspect Protocol
E02Water Level Pressure Switch & Air Dome
De-Longhi E02: Water level pressure sensor/switch frequency anomaly detected in Washing Mach...
Inspect Protocol
E03Drainage System & Drain Pump
De-Longhi E03: Water drainage failure detected in Washing Machine; drain pump cannot evacuat...
Inspect Protocol
E04Water Level Pressure Switch & Air Dome
Anti-flood / Overfill detected
Inspect Protocol
E05NTC Temperature Sensor & Thermistor
Temperature sensor (NTC) fault
Inspect Protocol
E06Drive Motor, Inverter & Tachometer Sensor
De-Longhi E06: Motor drive or inverter rotation anomaly in Washing Machine; drum/motor fails...
Inspect Protocol
Err09Drive Motor, Inverter & Tachometer Sensor
Door lock mechanism failure
Inspect Protocol
CodesErreur.com

Premium appliance diagnostics & repair database.
Powered by AI to help certified technicians worldwide.

Trusted by professionals in CH & FR

Platform

Search DatabasePRO Diagnostic AIPRODiagnostic ToolsBrands

Workshop Tools

Brands (87)OEM ManualsFind Rating PlateParts Locator

For Technicians

SpecialistsTechnician ForumTech JobsPremium

Corporate

Terms of ServicePrivacy PolicyOfficial Swiss Repair Partner: Electroassistance
OPERATIONAL SAFETY SPECIFICATION

SAFETY DISCLAIMER

The technical information, diagnostic guides, error codes, and AI-generated suggestions provided on this website are intended exclusively for certified and qualified professionals. Appliance repair involves severe electrical hazards, high voltages, and mechanical risks that can result in fatal injury or severe property damage. If you are not a trained technician, do not attempt to repair any appliances. CodesErreur assumes no responsibility or liability for any damage, injury, or consequential losses resulting from the use of the information provided on this platform. You use all information entirely at your own risk.

© 2026 CodesErreur. All rights reserved.

Official Swiss Repair Partner: Electroassistance Terms of Service Privacy Policy