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 CODESY EF
Bompani
Bompani // OFFICIAL DIAGNOSTIC BENCH

Bompani SY EF

RefrigeratorRefrigeration Compressor, Defrost Heater & PTC Relay
Other Brands Sharing Code SY EF:ElectroluxSY-EFFrigidaireSY-EFSeverinSY-EF

Symptom / Description

FAULT

Freezer is warm but the compressor is running. You may not hear air circulating.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

The evaporator fan motor has failed or is blocked by ice.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED
1Check if the fan blade is obstructed by ice buildup. If clear, test the fan motor to see if it receives voltage. If voltage is present but the fan doesn't run, the motor needs replacement.
Direct extraction from OEM factory manuals & wiring schematics

Field Actions

DISPATCH
Need Help? Call a Certified TechnicianWorldwide Bompani 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
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: Bompani SY EF

FAQ TREE
What does error code SY EF mean on a Bompani appliance?

Bompani SY EF: Freezer is warm but the compressor is running. You may not hear air circulating.

What is the root cause of Bompani error code SY EF?

The evaporator fan motor has failed or is blocked by ice.

How do I fix or resolve Bompani error code SY EF?

Check if the fan blade is obstructed by ice buildup. If clear, test the fan motor to see if it receives voltage. If voltage is present but the fan doesn't run, the motor needs replacement.

Community Verification

COMMUNITY

Did this solution resolve the issue?

SEMANTIC KNOWLEDGE GRAPH // BOMPANI

Related Bompani Refrigerator / Freezer Error Codes

Diagnostic Link Mesh14 OEM Cross-References

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

E01Door Lock Mechanism & Safety Interlock
Door will not lock or machine will not start.
Inspect Protocol
E02Water Inlet Valve, Aquastop & Flowmeter
Washing machine is not filling with water or filling very slowly.
Inspect Protocol
E03Drainage System & Drain Pump
Water is not draining from the drum at the end of a cycle.
Inspect Protocol
E04Water Level Pressure Switch & Air Dome
Machine overfills with water or stops with water inside.
Inspect Protocol
E05NTC Temperature Sensor & Thermistor
The machine is not heating the water.
Inspect Protocol
E07Drive Motor, Inverter & Tachometer Sensor
The drum does not spin or spins erratically/violently.
Inspect Protocol
E1Water Inlet Valve, Aquastop & Flowmeter
Dishwasher will not start and may be beeping; anti-flood system activated.
Inspect Protocol
E3NTC Temperature Sensor & Thermistor
Water is not heating up, resulting in poor wash performance and wet dishes.
Inspect Protocol
E4Water Level Pressure Switch & Air Dome
Dishwasher is overfilling with water.
Inspect Protocol
E5Drainage System & Drain Pump
Dirty water remains in the bottom of the dishwasher after a cycle.
Inspect Protocol
F1Refrigeration Compressor, Defrost Heater & PTC Relay
Freezer is not cooling properly or is icing up.
Inspect Protocol
F2Refrigeration Compressor, Defrost Heater & PTC Relay
The fresh food (refrigerator) section is too warm or too cold.
Inspect Protocol
F3Refrigeration Compressor, Defrost Heater & PTC Relay
Excessive frost or ice buildup on the back wall of the freezer or on the evaporator coils.
Inspect Protocol
F4Refrigeration Compressor, Defrost Heater & PTC Relay
Refrigerator is not cooling well and the evaporator coils in the freezer are completely cove...
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