

JennAir PF or a blinking colon: the microwave clock after a power cut
After any interruption in supply, a JennAir hood combination comes back with PF or a blinking colon instead of the time.
Mon–Sat, 8am–8pm
- Power and supply
- Microwave diagnostic visit
- Source: JennAir
Book a visit
Three short steps, about a minute.
or call (844) 393-5858
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What PF
actually means.
After any interruption in supply, a JennAir hood combination comes back with PF or a blinking colon instead of the time. It is a notice that the clock and any cycle in progress were lost, not a diagnosis of a failed part.
JennAir microwave display · also shown as :
What to do when PF 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.
MakeJennAir
JennAir microwaves looked at in place, with the breaker, the door switches and a one-minute heat test covered before any part is priced.
SourceJennAir Product Help, over-the-range microwave: Flashing ":" or PF in display
From JennAir's help pages for its microwave hood combinations (Euro-style, including the convection models). The code set varies with the control generation, so a code missing from your model's manual may not apply to it.
Before you book,
in this order.
Each step comes from JennAir's own guidance for PF on its microwaves. Follow it to the end: the last card says whether this is a visit.
Press Cancel/Off (or Cancel) to stop the flashing.
Enter the time of day again.
If the flashing keeps returning with no outage in the house, have an electrician check the circuit; JennAir points to a qualified electrician for this one.
Still there?
It usually turns into microwave diagnostic visit. Book with the code and the model number.
What not to do
PF does not mean the control board is failing. It is also different from a breaker that trips every time the microwave starts, which is urgent and calls for a technician.
What you may
notice with it.
The microwave problems PF tends to arrive with. Answer these at the microwave before anyone is booked.
All problemsJennAir
microwaves.
JennAir microwaves looked at in place, with the breaker, the door switches and a one-minute heat test covered before any part is priced.
JennAir microwave repairMore JennAir codes
All 21 JennAir codesPower and supply on other makes
Microwave hood combination
The microwave that hangs from the wall cabinets above the burners, heating food in its cavity while its own fan, light and filters handle the steam and grease rising from the pans beneath it.
Built-in microwave
A microwave set into a tall cabinet or a wall of cabinetry at eye level, either a countertop body wrapped in a trim kit or a true built-in model, including speed and convection microwaves that brown as well as heat.
Microwave drawer
A microwave built under a counter or into a kitchen island that opens like a drawer at the touch of a key, with a motor and gears sliding its cavity out toward you.
In JennAir's own words
If the colon " : " blinks in the display a power failure has occurred.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. From JennAir's help pages for its microwave hood combinations (Euro-style, including the convection models). The code set varies with the control generation, so a code missing from your model's manual may not apply to it.
JennAir PF 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 PF.
Can I clear PF myself?
Why does my JennAir microwave flash PF after a storm?
My JennAir flashes PF with no outage. Who should I call?
Does PF erase my JennAir favorites?
Back to your everyday
Still showing PF?
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.