JennAir JMV Code E13: oven did not pre-heat correctly

What E13 means

E13 on JennAir over-the-range microwave hoods such as the JMV9196CS or JMV8000 series means the oven did not pre-heat correctly. The guidance says the appliance control board or its wiring may be the problem. You will see E13 during heated or convection cooking, when the preheat step ends early or never starts. The microwave may start the cycle and then quit, or it may not begin heating at all, and a restart gives the same result.

Common causes of E13

Appliance control board is not handling the preheat
Wiring to the board or heater is loose
Heating system is not responding to the control

✓ One safe check you can try

1. Cancel the cycle and let the oven cool. 2. Confirm the circuit breaker is on. 3. Check the vents are free of grease and blockage. 4. Try one more preheat with an empty cavity. 5. If E13 returns, stop using heated modes and call us.

! Why to stop there

The board and heater wiring need measurements to separate.
A board swap could be wasted if the wiring is the cause.
Repeated preheats overheat the housing.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Microwave codes

FC E7JennAir OTR Microwave Code FC E7: no connection to your router FC E8JennAir OTR Microwave Code FC E8: registration rejected, check the SAID number FCE8JennAir OTR Microwave Code FCE8: wrong appliance type or model chosen Flashing 0:00JennAir Countertop Microwave Message Flashing 0:00: Reset the Clock Flashing ":" or PF in displayJennAir OTR Microwave Message Flashing ":" or PF: Power Failure or Clock Off LOC or "L" or Padlock IconJennAir Microwave Message LOC, L or Padlock Icon: Control Lock Enabled Locked, Lock or LocJennAir Built-In Microwave Message "Locked, Lock or Loc": Control Lock On ":" or "." in displayJennAir Built-In Message ":" or "." in display: clock needs setting

E13E13 questions

What sets E13 apart from E23?

E13 says the oven did not pre-heat correctly and blames the control board or wiring. E23 says the oven did not reach pre-heat temperature in thirty minutes, and adds the heater.

Will microwave power still work with E13?

Often yes, since the code is about preheating, not about microwave energy. Use microwave power carefully, keep an eye on the display, and watch for any other error messages.

Should I try E13 again after it cools?

One more try after cooling is fine. If E13 shows again, more attempts only heat the unit above your cooktop and wear it further, so book a service visit.