Bosch HIS8655U 800 Series 36 in Induction Cooktop Er2 Error Fix: Power Electronics Overheated

Error code Er2 on the Bosch HIS8655U 800 Series 36 in Induction Cooktop means: Power Electronics Overheated. The power electronics (IGBT modules/inverter board) that drive the induction coils have overheated. The cooktop will shut down until the electronics cool. Check the cooling fan — it should run whenever the cooktop is in use. Ensure ventilation openings are clear and not blocked by cabinetry or debris. Ambient temperatures above 95°F can contribute to overheating. If the fan runs but overheating persists, the IGBT heat sink compound may need renewal (professional service).

The most successful fix is "Renew IGBT Heat Sink Compound and Inspect Electronics" (hard difficulty, ~90 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Yes — the top-ranked community fix ("Renew IGBT Heat Sink Compound and Inspect Electronics") is rated hard difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Isopropyl alcohol, Lint-free cloth, Thermal compound applicator.

DIY cost: $15-$25. Professional repair typically costs $200-$350. Many homeowners save money by trying the top-ranked community fix first.

The Bosch HIS8655U 800 Series 36 in Induction Cooktop has 5 other known error codes, including: Er1 (Induction Coil Overheated), Er3 (Voltage Supply Error — Induction), Er4 (Incompatible Cookware Detected), Er5 (Induction Coil / Zone Fault), Flashing H (Residual Heat Warning).

Error code Er2 also appears on 2 other Bosch models: HDI8056U 800 Series 30 in Induction Slide-In Range, HII8056U 800 Series 30 in Induction Range with Home Connect. The fix may vary by model, so check each model's specific page for tailored repair steps.