What you came for
In plain terms, E23 means preheat ran past the documented time limit without the cavity arriving at temperature. The control abandons the program rather than run on a cavity that never arrived. A cold kitchen, a very large load put in at the start, or a door opened during the climb explains more of these than any component failure does.
What this code is documented as meaning
Reference| Code | Documented meaning |
|---|---|
| E23 | The oven did not reach Pre-Heat Temperature within 30 (thirty) minutes. There may a problem with the Heater, the Appliance Control Board, or the associated wiring. |
What an owner observes
- Preheat runs on and on and then the code appears — The tone you were waiting for never comes.
- The oven is warm but well short of the set temperature — Warm and not hot is exactly a half-powered heating circuit.
- NEAR MISS - the cavity stays completely cold — Cold means no heat at all rather than slow heat, and that is the page for a dead heating circuit.
What triggers this code, most likely first
- One element out of a pair no longer heating — Ranked first because half the heat is the commonest way to miss a time window: the oven climbs, just at half the rate the window assumes.
- Heat escaping through a tired door seal or a dropped door — Second: a cavity losing heat as fast as it makes it never reaches temperature, and the seal is owner-visible.
Where to start, and what follows
- Preheat from cold, empty, with the door left shut — Free, and it removes every environmental cause in one attempt.
- Watch which elements glow through the climb — One out of two is visible without a meter.
What an owner can safely do
- Try one preheat from cold with an empty cavity — Success here means the oven was being asked to climb under load.
About 30 min
- Inspect the door seal all the way round — Gaps, hardened rubber and a door that no longer pulls tight all cost climb rate.
About 10 min
- STOP HERE before any panel comes off — Unplug the appliance or switch off its breaker first; a capacitor can hold a charge after the power is off.
Safety first, and it is not optional
Safety
Before any panel comes off: unplug the appliance or switch off its breaker, because a capacitor can hold a charge after the power is off. Nothing on this page asks you to work on a live circuit, and nothing on it asks you to alter a switch or an interlock - those are what keep the appliance safe when it is running.
When this is a service call
Where an owner stops: call when an empty oven with a shut door still misses the window: that is an element, a sensing circuit or a relay, and a technician separates them in one visit. And where nobody should wait at all: no emergency in this code alone.
Neighbouring codes on this appliance
Which model lines this reading applies to
This is generalized information about one code across the model lines that time the preheat climb against a documented limit. It does not carry the numbers that belong to a specific unit: wiring colours, resistances and part numbers are family-specific, and they are the reason a service manual exists. If your family or model has its own page, read that one first - it is the more specific answer - and the code index below is where to look for it.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
