- “Runs a full cycle, nothing gets warm”
- “The plate turns and the light works”
- “An F code on the display”
Symptom
GE microwave runs but does not heat
GE's own list starts with two checks that cost nothing: whether the timer was set instead of a cook function, and whether the door is closing fully onto its safety interlocks. After those, it is the high-voltage side — and that is licensed work, because a microwave capacitor holds a dangerous charge after the appliance is unplugged.
- From $95 diagnostic, credited to the repair
- 59 cities and neighborhoods covered
- OEM parts available on order
- In writing the price, before anything is opened
Four ordinary causes
What this usually turns out to be
Cheapest and commonest first, which is also the order we check them in. They sit hundreds of dollars apart, and only the unit settles which one is yours.
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The timer used instead of a cook function
GE's own first check. The appliance is behaving correctly and doing nothing.
Diagnostic visit from $95 -
A door not engaging its interlocks
Open it and close it firmly. A worn latch or a dropped door produces this and is a small repair.
Microwave repair from $155 -
The high-voltage side
Magnetron, diode or capacitor. Licensed work, and the reason this symptom gets a visit rather than advice.
Microwave repair from $155 -
The touch panel or a sensor
GE's F3 is a shorted touch pad here — note that on a range the same code means the oven sensor.
Microwave repair from $155
In five minutes
Before you call anybody
None of it needs tools, and all of it makes the visit shorter.
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01
Confirm you selected a cook function
Not the timer. It is the first thing GE asks and it is right often enough to ask.
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02
Open the door and close it firmly
Then try again. If it heats, the latch is your repair.
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03
Photograph any code
And check it against the microwave table rather than the range one.
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04
On an over-the-range unit, test the fan and lights separately
They are a different circuit, and a unit where only the fan has died is a much smaller repair.
How it shows up
What people describe when they call
A shortcut
Narrow it down before anybody arrives
A description of the behaviour leaves a few possible causes. A code names the subsystem before anybody opens anything, which is why it is worth photographing before it clears.
If there is no code at all
The data plate is inside the cabinet, upper left wall or behind the grille. All models
In more detail
About GE microwave runs but does not heat
Check the door closes firmly, and that you used a cook function
GE names both first. The door has to engage its safety interlocks before the magnetron will run at all, and a door that looks shut but sits a fraction proud will tumble the plate and heat nothing. The other one is more embarrassing and just as common: the timer counts down without cooking anything.
The part we would rather nobody opened
A microwave capacitor holds a dangerous charge after the appliance is unplugged, and it does not care how confident anybody is. This is the one category where we would rather a customer called somebody competent than took the case off.
When it is not worth repairing
A countertop microwave, once the high-voltage side has gone, rarely is. A built-in, a drawer or an over-the-range unit usually is, because replacing it is joinery as well as shopping. We will tell you which you have before quoting.
A GE microwave not heating, with the plate turning and the light on, is usually the high-voltage side — and that is licensed work, because the capacitor holds a charge after the appliance is unplugged.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards
Before you book
Questions about GE microwave runs but does not heat
There are sparks inside.
Stop and unplug it. GE calls that arcing, and running it damages the cavity further every time. A scorched cavity often ends the appliance.
It shows PF or 888.
That is a power failure notice rather than a problem. Cancel/Off clears it and the appliance works normally.
Where we do it
Across Miami-Dade, Broward, and Palm Beach
Same terms everywhere we go: an on-site diagnostic first, the price agreed in writing, and the exact figure confirmed once we have seen the unit.
Neighborhoods people ask for by name