A built-in microwave in a kitchen cabinet stopped halfway through a cycle, a covered glass dish of vegetables inside behind the mesh window and a faint wisp of steam on the glass.

JennAir F8E5: the exhaust air temperature sensor

JennAir hood combinations read the temperature of the exhaust air to manage the fan and protect the unit from heat below.

(844) 393-5858

Mon–Sat, 8am–8pm

  • Sensors and temperature
  • Microwave control board and touchpad repair
  • Source: JennAir

Book a visit

Three short steps, about a minute.

or call (844) 393-5858

What F8E5
actually means.

JennAir hood combinations read the temperature of the exhaust air to manage the fan and protect the unit from heat below. F8E5 appears when that exhaust air temperature sensor, or its wiring, returns a reading the control rejects, and the function that was running stops.

JennAir microwave display · also shown as F8 E5

What to do when F8E5 shows on the microwave

Before you book,
in this order.

Each step comes from JennAir's own guidance for F8E5 on its microwaves. Follow it to the end: the last card says whether this is a visit.

01

Turn the microwave off at the circuit breaker, count a full minute, then restore power.

02

Give it a minute on standby; a code that does not reappear was likely a one-time glitch, so run a short cycle to confirm.

03

Make sure the grease filters are in place and clean, since they change the airflow over the sensor.

04

Book a visit if F8E5 returns.

Still there?

It usually turns into microwave control board and touchpad repair. Book with the code and the model number.

What not to do

F8E5 is a sensor code, while a blocked vent door is F7 E9. The code does not mean the burners or elements below are overheating on their own.

What you may
notice with it.

The microwave problems F8E5 tends to arrive with. Answer these at the microwave before anyone is booked.

All problems

Where F8E5 usually leads

Microwave control board and touchpad repair.

Control board, keypad membrane or display · moderate to highest.

In JennAir's own words

There may a problem with the Exhaust Air Temperature Sensor, or the associated wiring.
JennAir Product Help, over-the-range microwave: F8E5 JennAir Product Help, over-the-range microwave: F8E5

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. From JennAir's help pages for its microwave hood combinations (Euro-style, including the convection models). The code set varies with the control generation, so a code missing from your model's manual may not apply to it.

JennAir F8E5 microwave repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas
A family warming plates of food at a built-in microwave in a bright kitchen
For the heart of your home.

Questions
about F8E5.

Can I clear F8E5 myself?
Turn the microwave off at the circuit breaker, count a full minute, then restore power. If it comes back, it needs a visit.
Why does my JennAir fan act oddly with F8E5?
The fan responds partly to the exhaust temperature reading, which F8E5 says is not usable.
Could greasy filters cause F8E5 on a JennAir?
They affect airflow past the sensor, so clean them first, though the code itself names the sensor and wiring.
Is F8E5 on JennAir urgent?
It is not a hazard by itself, but the unit loses a heat check on its exhaust. Get it looked at rather than resetting repeatedly.

Back to your everyday

Still showing F8E5?

Three details make the booking useful: the characters or beeps just as they appeared, every character of the model number, and whether a cup of water still warms up. With those, the technician arrives already halfway to the answer.

(844) 393-5858 Schedule a repair