Code overview
Content status: Verified
- Error code
- 4D21
- Appliance
- Wall Oven
Maytag wall oven code 4D21: what the display means and the power reset steps to try.
Model compatibility: Maytag reuses codes across series and model years, so 4D21 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
What this code means
4D21
Cooling fan speed too low. There may be a problem with an airflow restriction, the oven cooling fan, or the associated wiring.
In a nutshell
Reading 4D21 off a Maytag wall oven: it concerns the cooling fan, its wiring or airflow being suspect. Maytag notes: Cooling fan speed too low.
First move
- Open with the breaker(s) that feed the oven, switched off.
- A one-minute pause comes next.
- Re-energize the oven and read the display for 4D21.
- Then verify the oven operates.
Also see
Still showing 4D21? Time to call for service.
Maytag service for wall ovens
Located in one of our metro areas (Miami, New York, Houston, Los Angeles, San Diego)? Phone (844) 415-0954. Tell the dispatcher the oven shows 4D21, give the model number, and mention the reset. Oven repair info is online.
Source: 4D21 Wall Oven – Product Help
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.
Sources & references
Tell us what’s wrong — we’ll take it from there
Share a few details and we’ll confirm an appointment. Prefer to talk? Call us and we’ll help right away.