

Miele 12:00 on the display: the microwave was without power for days
Miele's appliances can hold the time through a short outage, but not a long one.
Mon–Sat, 8am–8pm
- Power and supply
- Microwave diagnostic visit
- Source: Miele
Book a visit
Three short steps, about a minute.
or call (844) 393-5858
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What 12:00
actually means.
Miele's appliances can hold the time through a short outage, but not a long one. After more than 150 hours without power, the M 7240 TC and the speed ovens start again at 12:00 and need the time, and on the speed ovens the date, set again.
Miele microwave display
What to do when 12:00 shows on the microwaveKind of codePower and supply
The microwave has noticed trouble with the power reaching it: an outage or a brownout that interrupted a cycle, a voltage too low for the magnetron to start, or a supply that dipped when something else on the circuit switched on. As often as not the cause is the circuit, the outlet in the cabinet above or the breaker rather than the unit; a main fuse that blows again after a reset points inside, where only a technician goes.
Usually leads toMicrowave diagnostic visit
A visit that times a cup of water against the clock, checks the door and its switches, then tests the high-voltage section, the controls and the moving parts one at a time until a single part is named.
Shows up asWhat a Microwave Error Code Is Telling You
A microwave error code may be a letter and a number on the display, a lock or demo word, a row of dashes, or a beep with a blinking clock, and it can show while the microwave still heats or block every key until it is cleared.
MakeMiele
Miele microwaves and speed units checked at eye level in your kitchen, starting from the message on the display and the mode in use.
SourceMiele M 7240 TC microwave oven operating and installation instructions
Miele M 7240 TC built-in microwave and H 7840 BM, H 7770 BM, H 7870 BM speed ovens.
Before you book,
in this order.
Each step comes from Miele's own guidance for 12:00 on its microwaves. Follow it to the end: the last card says whether this is a visit.
Set the time of day, and on a speed oven the date as well.
Check that your preferred settings, such as the clock display, are still as you like them.
If 12:00 returns without a long outage, book a visit, because the appliance is losing its supply or its memory.
Still there?
It usually turns into microwave diagnostic visit. Book with the code and the model number.
What not to do
12:00 is not the Power Failure message, which follows a brief interruption during cooking. It is also not a sign of damage to the microwave from the outage.
What you may
notice with it.
The microwave problems 12:00 tends to arrive with. Answer these at the microwave before anyone is booked.
All problemsMiele
microwaves.
Miele microwaves and speed units checked at eye level in your kitchen, starting from the message on the display and the mode in use.
Miele microwave repairMore Miele codes
Power and supply on other makes
In Miele's own words
There was a power failure for more than 150 hours.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Miele M 7240 TC built-in microwave and H 7840 BM, H 7770 BM, H 7870 BM speed ovens.
Miele 12:00 microwave repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about 12:00.
Can I clear 12:00 myself?
We were away for two weeks and our Miele microwave shows 12:00. Is it broken?
Why does my Miele speed oven show 12:00 after a short outage?
Can my Miele microwave be used before I set the time?
Back to your everyday
Still showing 12:00?
Three details make the booking useful: the characters or beeps just as they appeared, every character of the model number, and whether a cup of water still warms up. With those, the technician arrives already halfway to the answer.