Published September 2, 2026Updated October 17, 2026
Content status:
Verified
Error codeF8E5
ApplianceMicrowave
Quick answer
F8E5 appears in two JennAir manuals with slightly different part names. Reset and next step.
Model compatibility: JennAir reuses codes across series and model years, so F8E5 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
JennAir lists F8E5 as a possible fault with the exhaust air temperature sensor (over-the-range) or exhaust fan air temperature sensor (built-in), or the wiring.
Both of JennAir’s microwave help pages carry F8E5, but they name the part differently depending on the microwave type.
Over-the-range: the exhaust air temperature sensor, or the wiring.
Built-in: the exhaust fan air temperature sensor, or the wiring.
JennAir does not say whether these are one physical part under two names.
The step both pages share
Cut power at the circuit breaker and leave it off for a minute. After switching it back on, watch the microwave for one minute and note whether F8E5 reappears.
Code still there
A technician has to test the named sensor and its wiring. There is no owner repair on either page, and neither one brings up a blocked vent for this code. The blocked upper vent door appears under F7E9 on the over-the-range page.
Useful details
Your microwave type, because the sensor is named a bit differently for each, along with the outcome of the breaker reset.
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 JennAir appliance?
Book a specialist visit for a clear estimate and approval before any repair.
