What E87 Means
E87 indicates the exhaust slide valve or its motor is jammed — a mechanical or electrical issue in the system that vents steam from the cavity.
Common Causes of E87
- Mechanically jammed exhaust slide valve, often from mineral buildup
- Failed valve motor
- Wiring fault to the valve motor
🔧 One Safe Check You Can Try
There isn't a safe at-home check for this — the exhaust valve assembly requires technician access and testing.
⚠ Why You Shouldn't Go Further Than That
- The exhaust valve sits in the steam pathway, an area exposed to heat and moisture not present in standard oven components.
- Forcing a jammed valve mechanically can break the slide track, turning a motor repair into a full assembly replacement.
- Motor wiring for this component runs near other high-heat wiring, where a nicked wire creates a harder-to-trace intermittent fault.
- Mineral buildup causing the jam often indicates a broader descaling need across the steam system, which a technician should assess comprehensively.
- This repair category typically voids the remaining warranty if attempted outside factory-certified service.