Electrolux Oven Error Code bSHt

The bSHt code indicates that the NTC thermistor on the boiler Solid State Relay heat sink has detected a temperature at or above 85°C, triggering an overtemperature warning. The oven protects itself by halting operation until the heat sink cools to 75°C. Common causes include a dirty air intake filter, a failed cooling fan, or a wiring issue at connector X42 on the control unit. In rarer cases, the SSR itself may have an internal fault.

You should not continue operating the oven while this code is active. The warning exists specifically to prevent thermal damage to the SSR and surrounding components. Continued use with restricted airflow or a malfunctioning cooling fan could lead to component failure or create a safety hazard. Allow the oven to cool and address the root cause before resuming use.

Repair costs depend on the cause. Cleaning the air filter costs nothing beyond your time. If the cooling fan needs replacement, expect to spend roughly $80 to $200 including parts and labor. An SSR replacement typically runs $150 to $350 depending on parts availability and labor rates in your area. Diagnostic service calls generally range from $75 to $150 before any parts are factored in.

Some causes of bSHt are owner-serviceable. Cleaning the inlet air filter requires no special tools and should be the first step. Checking that the cooling fan spins freely and is not obstructed is also within reach for most DIYers. However, inspecting connector X42 on the ACU, testing the SSR, or replacing components involving electrical connections to the boiler system should be handled by a qualified technician.

The bSHt fault is designed to reset automatically once the SSR heat sink temperature drops back to 75°C, so powering the oven off and allowing it to cool may temporarily clear the code. However, if the underlying cause is not corrected, such as a clogged filter or a failing fan, the error will return as soon as the oven reaches operating temperature again. A lasting fix requires identifying and resolving the root cause.