Electrolux Oven Error Code CSHt

CSHt is a warning code indicating that the Solid State Relay (SSR) heat sink temperature has reached 85°C, which exceeds the safe operating threshold monitored by an NTC thermistor. The oven's Appliance Control Unit triggers this warning to protect the SSR from heat damage. The code will reset automatically once the heat sink cools back down to 75°C. Common causes include a dirty air intake filter, a failing cooling fan, or an internal SSR issue.

The CSHt code is a warning rather than a hard fault, meaning the oven detected an overtemperature condition but may still be operational. Continuing to use the oven without addressing the root cause risks damage to the SSR, which is a critical power control component. It is best to stop using the oven until the cause is identified and corrected to avoid a more serious and costly failure.

Repair costs vary depending on the root cause. Cleaning the inlet air filter costs nothing beyond time, while a professional diagnostic visit typically runs between $75 and $150. Replacing a cooling fan generally falls in the $150 to $300 range including parts and labor, and SSR replacement can range from $200 to $400 or more depending on the model and local labor rates.

Some causes of CSHt are straightforward to address without professional help, particularly cleaning a blocked inlet air filter or improving ventilation around the oven. However, diagnosing a failed cooling fan, inspecting the X41 connector on the ACU, or replacing the SSR requires comfort working with appliance electronics and should be approached carefully. If you are not experienced with appliance repair, a qualified technician is the safer choice for anything beyond basic filter cleaning.

The CSHt warning will reset automatically once the SSR heat sink temperature drops back below 75°C, so a power cycle may temporarily clear the display. However, if the underlying cause such as a clogged filter or faulty cooling fan is not resolved, the code will return during the next use. A reset without repair is not a solution and could allow heat damage to occur over repeated cycles.