JennAir JMV Code E03: keypad reported to the control board

What E03 means

E03 on JennAir over-the-range microwave hoods, including the JMV9196CS and the JMV8000 series, means the keypad (user interface) reported a problem to the control board. The keypad or its wiring may be the cause. Owners typically see keys that do not register, a display that freezes, or cycles that refuse to start while E03 is on the screen. Both the display and the keys may seem dead.

Common causes of E03

Keypad has failed
Wiring to the keypad is loose or damaged
Moisture or grease reached the panel

✓ One safe check you can try

1. Dry the keypad with a soft cloth. 2. Press Stop/Cancel, wait a minute. 3. Interrupt power at the breaker for sixty seconds. 4. Try one key at a time. 5. If E03 comes back, leave the panel alone and book a visit.

! Why to stop there

Keypad ribbon cables tear when the front is pried off.
A control problem can look like a keypad problem.
Testing means opening the housing near live parts.

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

F8E5JennAir JMV Code F8E5: exhaust air temperature sensor F9JennAir JMV Code F9: appliance or relay control board F9Q1JennAir JMV Code F9Q1: touch pad problem FC E1JennAir OTR Microwave Code FC E1: router connection timed out FC E2JennAir OTR Microwave Code FC E2: appliance cannot reach the router FC E3JennAir OTR Microwave Code FC E3: link to the router was lost 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

E03E03 questions

How does E03 differ from F2?

Both blame the keypad on this hood. The wording shows the keypad reported a problem to the board. Testing is the same: we check the pad, its cable and the board input.

Can I keep using the microwave?

If it starts, cooking is usually fine, but unresponsive keys make it hard to control time and power. Stop using it if the display freezes, and let us know what the panel does.

Will a breaker reset fix E03?

It may clear a one-time glitch, and trying once is safe. If E03 returns, the keypad or its connection needs repair or replacement, and repeated resets only delay that visit.