Published September 2, 2026Updated October 17, 2026
Content status:
Verified
Error codeE13
ApplianceMicrowave
Quick answer
E13 tells you a JennAir over-the-range microwave did not pre-heat correctly, and names the appliance control board or wiring.
Model compatibility: JennAir reuses codes across series and model years, so E13 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
E13 means the oven did not pre-heat correctly; the appliance control board or wiring may be at fault.
What E13 states
There are two statements in JennAir’s entry for E13. The event: pre-heating went wrong, in that the oven failed to do it correctly. The possible reason: the Appliance Control Board, or the wiring connected to it.
Reading the wording
The control board in question is the circuit board managing the microwave. The wording about the event comes from JennAir’s over-the-range page and goes no further: it has no temperature figure, no time limit and no deeper cause, so you will find none here.
Reset sequence
Breaker off, then wait one minute.
Breaker on.
Monitor for a minute to be sure E13 does not come back.
Check the microwave works.
Returning code
Where the code persists, JennAir’s closing line is that qualified technician help may be needed. A board and its wiring are inside the microwave, so this is not owner work.
Next to E23
Code
Description
E13
Pre-heat not done correctly; board or wiring
E23
Pre-heat temperature missed within half an hour; heater, board or wiring
These two are easy to mix up. E23 additionally lists the heater, so check the exact characters on the display.
If E13 will not stay away, ring (310) 622-9465 in Los Angeles. We need the code and the model number from the microwave. For general details, read about microwave service.
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.
