Frigidaire Dishwasher F3 Error: High Limit Thermostat

Quick Answer

F3 on a Frigidaire dishwasher means the high-limit thermostat has tripped. This thermostat is a one-shot thermal protection device - once it trips from an overheat event, it must be replaced even if the underlying cause was resolved. A tripped thermostat will read OL (open circuit) on a multimeter.

F3 basically means your dishwasher's safety system fired and shut everything down before it could melt anything. That thermostat's whole job is to die so your machine doesn't. What I usually find when I show up on one of these is either a heating element that's pulling way too many amps or a control board relay that got stuck closed. Just swapping the thermostat without checking both of those first is a gamble you really don't want to take.

FrigidaireDishwasherSeverity: highDifficulty: intermediate84% DIY Success

Time to Fix

30–75 min

Difficulty

intermediate

Parts Cost

$10 – $18

Tools Needed

Phillips #2 screwdriver, Flathead screwdriver (medium)

What Does the F3 Code Mean?

You're looking at a safety shutdown that's there to keep your plastic tub from warping or worse. The high-limit thermostat is basically a one-shot fuse for your heater circuit and honestly it's not an expensive part, maybe $15-20. But the real question is always why it blew in the first place. I've seen people swap this thing three times in a row without checking the heating element and just keep blowing them. It's a pretty common mid-cycle failure that leaves your dishes cold and soaking wet.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

High-limit thermostat tripped from a genuine overheat event40%

Heating element shorted (causing overheat that tripped the thermostat)24%

Control board heater relay stuck closed causing continuous heating22%

High-limit thermostat failed open circuit from age14%

Symptoms You May Notice

F3 shows up on the display mid-cycle, usually during the main wash or heated dry phase when the element's been running a while and the temps climbed too high.
You open the door and get blasted with way more steam than usual, or the dishes are scorching hot to the touch right when the code fires.
Dishwasher stops dead with standing water in the bottom. The pump quit, the heater quit, everything just died at once mid-wash.
Right before the code appeared, you might've noticed a faint hot plastic smell coming from the unit. That's not a good sign and it usually means the thermostat was already struggling.
Dishes weren't drying properly even before the F3 showed up, because the element was already running inconsistently or drawing too much current.

Can you reset a Frigidaire dishwasher to clear the F3 code?

There's no button combo or key sequence that'll clear this one. The high-limit is a one-shot thermal fuse, so the only reset is putting in a new part. Once you've got the new thermostat installed, go to your breaker panel and flip the dishwasher's breaker off for a full 60 seconds to clear the fault from control board memory. Flip it back on, run a short cycle like Quick Wash, and stay close for the first few minutes to make sure the new thermostat isn't tripping right away.

Tools Required for Diagnosis

Phillips #2 screwdriverFlathead screwdriver (medium)Torx T20 screwdriverDigital multimeter with continuity and ohms settingsNeedle-nose pliers for wire connectorsWork gloves (element edges are sharp)

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test

Expected Range0–1 ohms

ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
High-Limit Thermostat154594901 · $10–$18	154594901	$10 – $18

Frequently Asked Questions

Can the Frigidaire F3 high-limit thermostat be reset without replacing it?

Unlike some brands that use a resettable click-disk, Frigidaire uses a one-shot thermal fuse. When it detects a runaway heating situation, the internal contact literally snaps open to kill the power. I've had a ton of homeowners ask if they can just push a button to fix it, but once that internal circuit is broken, the part is electrically dead. You'll need to swap it out for a new part to get the machine heating again. There's no workaround and there shouldn't be, that thermostat is protecting your kitchen.

If I just replace the thermostat, will F3 come back?

This is the most common mistake I see in the field. If a stuck relay on the control board or a shorted heating element caused the overheat, your brand new thermostat will pop within minutes of starting the next cycle. Always check the heater for cracks or white calcium buildup, those are signs of dangerous hot spots. If the heater looks rough or tests bad on your meter, replace both the heater and the thermostat at the same time. Don't make two trips to the parts store when one will do it.

How much does it cost to fix a Frigidaire F3 error?

Honestly it's usually pretty cheap if it's just the thermostat. Part number 154594901 runs about $15-25 depending on where you order it, and you can swap it yourself in around 20 minutes. If the heating element also needs replacing, add another $30-50 for that. Where it gets expensive is if the control board's relay is stuck, because a replacement board for a mid-range Frigidaire can run $100-200. So worst case you're looking at around $250 in parts total, which still beats the price of a new machine by a lot.

How do I know if the control board caused my F3 error?

The biggest tell is whether your new thermostat blows again fast after replacement. If you install a fresh thermostat, the element tests completely fine, but F3 comes back within a few cycles, your control board relay is probably stuck in the on position and just keeps cooking the new part. You can sometimes confirm this by checking for voltage across the element leads during a cycle segment that shouldn't be heating. If you're seeing line voltage when there shouldn't be any, that relay's stuck closed and the board needs attention.

What's the part number for the Frigidaire high-limit thermostat?

The main one you want is 154594901, which fits a huge range of Frigidaire and Electrolux-built dishwashers. Some older units use 154221100 instead. Always cross-reference your specific model number before ordering because the mounting style and temperature rating can vary between production years. I'd grab it from a real parts supplier like RepairClinic or Encompass rather than a random Amazon listing, because you want the OEM part with the correct trip temp, not a generic knockoff that might blow too early or not soon enough.

Related Frigidaire Dishwasher Error Codes

Code: I20Frigidaire Dishwasher I20 Error Code: Drain Fault Code: E20Frigidaire Dishwasher E20 Error Code: Pump Fault Code: I30Frigidaire Dishwasher I30 Error Code: Leak Detected

Same Fix Works on These Brands

Frigidaire shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience F3 Errors

This repair applies to most Frigidaire dishwashers with this error code. Common model numbers include:

FFCD2413US, FFCD2418US, FGID2479SF, FGID2466QB, FFID2426TS, FPHD2491KF, FGID2474QF, FFBD2406NS

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on March 14, 2026