Published September 2, 2026Updated October 17, 2026
Content status:
Verified
Error codeE23
ApplianceMicrowave
Quick answer
E23 on a JennAir over-the-range microwave means pre-heat temperature was not reached within 30 minutes; the heater, control board or wiring are listed.
Model compatibility: JennAir reuses codes across series and model years, so E23 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
E23 means the oven did not reach pre-heat temperature within 30 minutes; heater, control board or wiring may be at fault.
What marks out E23 on a JennAir over-the-range microwave is a time: according to the help page, 30 (thirty) minutes passed without the oven arriving at pre-heat temperature. The page points to the Heater, the Appliance Control Board and the wiring tied to them.
Reset sequence
Flip this microwave’s breaker to off.
Leave it for one minute.
Flip the breaker to on.
Observe for a minute to see that the code stays gone.
Make sure the microwave operates.
The parts named
Heater: the source of heat for the oven function.
Control board: decides when to power the heater and monitors what happens.
Wiring: the connection between the two.
Which of these causes the 30-minute outcome is not stated. No target temperature is given either, so a normal pre-heat cannot be described here.
If E23 comes back
Both the heater and its control are inside the unit. For a code that comes back, the manufacturer’s guidance is a qualified technician, with the cabinet left closed.
Your questions
What is the 30 minutes? JennAir’s own figure for how long the oven went without reaching pre-heat temperature.
Is it E13 under another number? No. The two have separate entries, and E23 brings in the 30-minute limit together with the heater.
Related codes
E13: a briefer pre-heat statement, with no heater in the list
E24: heat in the other direction, an overheat condition
Heater and pre-heat service, Los Angeles
Call (310) 622-9465 with E23 and the pre-heat message in mind, along with a model number. See our microwave repair page for more on what we can look at.
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.
