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OEM VERIFIED BENCH
OFFICIAL FAULT CODEER21
Candy
Candy // OFFICIAL DIAGNOSTIC BENCH

Candy ER21

HobDoor Lock Mechanism & Safety Interlock
Integrated luxury convection oven and induction cooktop with illuminated touch controls
Hob
Select Appliance Type
0ms Instant Telemetry Switch
Other Brands Sharing Code ER21:HaierER21HooverER21RosieresER21AlaskaER21AtlanticER-21GEER21IbernaER21ZerowattER21

Symptom / Description

FAULT

Candy Moderna / Idea / Smart Touch Induction Cooktop: Ambient electronics housing temperature exceeded ER21; internal temperature inside cooktop enclosure exceeds 85°C.

TELEMETRY // LIVESIG: FAULT_DETECTED

Root Cause

ROOT CAUSE

On Candy cooktops powered by Moderna & Idea high-frequency induction power generator, electromagnetic pan detection, and capacitive touch interface: Blocked cabinetry ventilation intake/exhaust, pyrolytic oven installed underneath running a self-clean cycle, or failed cooling fan.

CIRCUIT // SUBSYSTEMLOGIC: ROOT_ISOLATED

Repair Instructions

UNLOCKED
1Turn off all cooking zones and allow 20 minutes to cool. Verify cabinetry ventilation slots are unobstructed. Check cooling fan rotation. Wipe glass surface completely dry, power down circuit breaker for 60 seconds, restore supply and touch Key Lock for 5 seconds.
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 Candy 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 PROTOCOLDoor Lock Mechanism & Safety InterlockHob / Cooktop
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)
800Ω–1.5kΩ (PTC terminals L-N) / 60Ω–120Ω (Pulse Solenoid)NOMINAL
0 Ω (SHORT)CALIBRATED BAND∞ OL (OPEN)
▲ NOMINAL OPERATING WINDOW
Target Component:PTC Heater Pellet / Pulse Solenoid / Microswitch Contacts
Test Pins & Connections
PROBE (+)
PROBE (-)
Across PTC heater terminals on lock bezel; switch contact reads <0.2Ω when locked
Tolerance & Diagnostic Criteria±15%. Switch contacts must read open (OL) when unlocked and 0.0Ω–0.2Ω when fully latched.
1. Pre-Intervention Electrical Safety Protocols
  • !Electrical Safety Protocol: Disconnect 230V mains power before releasing door gasket clamp or lock retaining screws.
  • !Never short-circuit or bypass the safety door lock contacts: severe hazard of rotating drum exposure or fire.
  • !Keep fingers away from spring-loaded latch mechanisms during closure cycling.
3. Preliminary Mechanical & Visual Checks
  • Inspect door strike pin and handle latch hook for plastic deformation, breakage, or misalignment.
  • Check door hinge alignment: a sagging door prevents the latch tongue from engaging the safety microswitch.
  • Locate and verify emergency manual pull cord inside the lower drain pump hatch.
Perform these diagnostic steps before triggering AI Deep Search or replacing boards.Certified Workshop Routine

Frequently Asked Questions: Candy ER21

FAQ TREE
What does error code ER21 mean on a Candy appliance?

Candy error code ER21 indicates: Candy Moderna / Idea / Smart Touch Induction Cooktop: Ambient electronics housing temperature exceeded ER21; internal temperature inside cooktop enclosure exceeds 85°C..

What is the root cause of Candy error code ER21?

The primary root cause for Candy code ER21 is: On Candy cooktops powered by Moderna & Idea high-frequency induction power generator, electromagnetic pan detection, and capacitive touch interface: Blocked cabinetry ventilation intake/exhaust, pyrolytic oven installed underneath running a self-clean cycle, or failed cooling fan..

How do I fix or resolve Candy error code ER21?

To resolve error code ER21: Turn off all cooking zones and allow 20 minutes to cool. Verify cabinetry ventilation slots are unobstructed. Check cooling fan rotation. Wipe glass surface completely dry, power down circuit breaker for 60 seconds, restore supply and touch Key Lock for 5 seconds.

Is it safe to clear Candy error code ER21 by resetting power?

Resetting power (unplugging for 5–10 minutes) clears temporary memory errors. However, if Candy code ER21 persists, the physical component causing On Candy cooktops powered by Moderna & Idea high-frequency induction power generator, electromagnetic pan detection, and capacitive touch interface: Blocked cabinetry ventilation intake/exhaust, pyrolytic oven installed underneath running a self-clean cycle, or failed cooling fan. must be inspected or replaced.

How do I test electrical resistance for Candy code ER21 using a multimeter?

Set a digital multimeter to ohms (Ω). Disconnect power and test PTC Heater Pellet / Pulse Solenoid / Microswitch Contacts across Across PTC heater terminals on lock bezel; switch contact reads <0.2Ω when locked. Expected nominal reading is 800Ω–1.5kΩ (PTC terminals L-N) / 60Ω–120Ω (Pulse Solenoid). Tolerance: ±15%. Switch contacts must read open (OL) when unlocked and 0.0Ω–0.2Ω when fully latched..

What safety protocol must be followed before servicing Candy code ER21?

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 // CANDY

Related Candy Hob / Cooktop Error Codes

Diagnostic Link Mesh14 OEM Cross-References

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

ER22Door Lock Mechanism & Safety Interlock
Candy Moderna / Idea / Smart Touch Induction Cooktop: Touch control evaluation hardware faul...
Inspect Protocol
ER31Door Lock Mechanism & Safety Interlock
Candy Moderna / Idea / Smart Touch Induction Cooktop: Power board configuration data corrupt...
Inspect Protocol
ER36NTC Temperature Sensor & Thermistor
Candy Moderna / Idea / Smart Touch Induction Cooktop: Touch board ambient NTC sensor shorted...
Inspect Protocol
ER47Drive Motor, Inverter & Tachometer Sensor
Candy Moderna / Idea / Smart Touch Induction Cooktop: LIN-Bus communication between touch co...
Inspect Protocol
F0NTC Temperature Sensor & Thermistor
Candy Moderna / Idea / Smart Touch Induction Cooktop: Cooking coil temperature sensor discon...
Inspect Protocol
F1NTC Temperature Sensor & Thermistor
Candy Moderna / Idea / Smart Touch Induction Cooktop: Cooking coil temperature sensor short ...
Inspect Protocol
F2Drive Motor, Inverter & Tachometer Sensor
Candy Moderna / Idea / Smart Touch Induction Cooktop: Communication loss to induction genera...
Inspect Protocol
F7Drive Motor, Inverter & Tachometer Sensor
Candy Moderna / Idea / Smart Touch Induction Cooktop: Mains supply frequency out of limits F...
Inspect Protocol
F8Door Lock Mechanism & Safety Interlock
Candy Moderna / Idea / Smart Touch Induction Cooktop: Continuous heating safety timer shutof...
Inspect Protocol
F9Heating Element, Thermostat & Safety Fuse
Candy Moderna / Idea / Smart Touch Induction Cooktop: Induction coil current sensor calibrat...
Inspect Protocol
LDoor Lock Mechanism & Safety Interlock
Candy Induction Hob touch panel shows 'L' on all zone displays and control keys do not respo...
Inspect Protocol
UDoor Lock Mechanism & Safety Interlock
Candy Moderna / Idea / Smart Touch Induction Cooktop: Mains supply undervoltage / phase miss...
Inspect Protocol
E0Door Lock Mechanism & Safety Interlock
Candy Moderna / Idea / Smart Touch Induction Cooktop: Touch control module initialization er...
Inspect Protocol
E1Water Level Pressure Switch & Air Dome
Candy Moderna / Idea / Smart Touch Induction Cooktop: Touch sensor zone covered by object or...
Inspect Protocol
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