Written by
Nora Halvorsen Appliance Care EditorPublished October 26, 2026
VERIFIED
Error code21
ApplianceCooktop
What LIN means here
LIN is short for Local Interconnect Network. Code 21 describes a bus that either is silent or is shorted. Sheet 318200282 Rev B gives it for an induction cooktop of 30 inches with a ceramic glass top and an ESEC-UIB.
Order of work for a technician
On the ESEC-UIB, connector P9, confirm the LIN harness is seated properly and shows no damage.
For Electrolux cooktops in San Francisco and nearby Bay Area towns, phone (415) 449-0036. Keep the code, the model number and any earlier attempts handy; more is on Electrolux cooktop repair.
Model compatibility: Electrolux reuses codes across series and model years, so 21 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
LIN bus error: no communication or a shorted bus.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Electrolux appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Electrolux ECCI3068AS 30-inch induction cooktop repair for San Francisco and Bay Area homes: dead zones, pan detection and control errors tested before…
Code 36 is a communication error on the left-hand cooking zones of the induction housing assembly. The manual lists harness checks and three replacements.
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