A Frigidaire refrigerator is built to run quietly and hold a steady temperature. So when the display suddenly shows “Er” followed by more letters or numbers, it’s more than a minor inconvenience. It’s the refrigerator telling you that its control has detected a fault it can’t fix on its own.
The good news: you can narrow down what’s going on quickly, and some of what you see on the display isn’t an error at all.
In this article, we’ll show you:
- Which Frigidaire refrigerators show Er codes, and what Frigidaire says about them
- The two you’re most likely to see: Er CE and the Er T codes (such as Er T1)
- What usually causes them
- What you can safely try at home (without risking damage to the control boards)
- Which other display messages are simple alarms you can clear yourself
Seeing an Er code on your Frigidaire? Our Frigidaire refrigerator repair technicians can read the code, test the boards and sensors, and fix the actual cause.
What Is Frigidaire Error Code ER?
On Frigidaire, “Er” isn’t one universal code. It shows up on specific models — most notably Frigidaire’s four-door refrigerators. Frigidaire’s support guide for those models lists Er CE and the Er T codes (Er T1 to Er T6) among the error codes that may need a service visit.
Other Frigidaire refrigerators use different messages. Frigidaire’s guide for some French door models lists codes such as SY CF, SY CE, SY EF, OP, and SH as ones that may need service, and many models simply flash the temperature display. That’s why the first step is always the same: write down exactly what the display shows and find your model number on the label inside the refrigerator. Frigidaire itself notes that meanings can vary by model and points owners to their own manual.
The two Er codes you’re most likely to see:
Er CE — usually a communication problem
Frigidaire lists Er CE as a code that may require service but doesn’t spell out its meaning in the support guide. In service work, a “CE” code is generally read as a communication error between the main control board and the user interface board (the display and buttons). That can come from a wiring harness problem, a loose connection, or a failed control component.
Er T codes — usually a temperature sensor reading
The Er T codes (Er T1 to Er T6) are also listed as codes that may require service. Technicians generally read the “T” codes as temperature sensor faults — a sensor sending an abnormal reading, or the control board not reading it correctly. That can come from a failed sensor (thermistor), damaged wiring, or a control board problem.
Because Frigidaire doesn’t publish the exact meaning of each code in its support guide, a technician confirms it with testing before any part is replaced.
Why These Errors Matter
Modern Frigidaire refrigerators rely on a steady flow of information between their boards and sensors. When that’s interrupted, performance can slip in ways that aren’t obvious right away.
The refrigerator might keep running, but you may notice:
- uneven cooling
- temperature swings, especially in the freezer
- the compressor cycling oddly
- alarms that keep coming back
- frost building up because defrost isn’t working right
Treat an Er code as an early warning, not a display glitch.
Not sure what your code means? Our EPA 608 certified technicians can test the boards and sensors and fix what’s actually wrong, with same- or next-day appointments available most days.
Er CE: What Usually Causes It
When you see Er CE, the refrigerator is essentially saying: “My control board and my display aren’t talking correctly.”
That communication runs through a wiring harness that connects the display board to the main board. If that path is disrupted, even briefly, the code can appear.
Most common causes of Er CE
- A power surge or outage. Even a brief interruption can throw the boards out of sync. Frigidaire’s own guide notes that a power outage or surge can also trigger other alarms.
- A loose or corroded harness connection. Vibration over time can loosen connectors.
- A failing user interface board. Often comes with a flickering display or buttons that don’t respond.
- A failing main control board. Usually comes with unstable cooling or the code returning after a reset.
How to Handle Er CE
Because control boards are expensive and easy to misdiagnose, the smart order is:
reset first, then let a technician check the connections, then test before replacing any board
Step 1: Do a Proper Power Reset
A real reset isn’t just pressing buttons. Frigidaire’s general reset steps:
- Unplug the refrigerator for 30 seconds and plug it back in, or switch off the breaker and turn it back on
- On models with a Clear Alerts button, you can also press it to reset active alarms
- Watch whether Er CE comes back
This can clear a temporary communication problem caused by a power hiccup.
Step 2: If Er CE Comes Back, Don’t Replace a Board Yet
If the error returns quickly, the next step isn’t “order a control board.” A technician will check:
- the wiring harness
- whether the connectors are fully seated
- the pins for corrosion
- the power supply to the boards
- the communication signal itself
A wiring repair costs far less than a board — and it’s often the real fix. Don’t open panels yourself: the boards and harnesses carry line voltage, and some Frigidaire models use a flammable refrigerant that their manuals say should be serviced only by trained personnel.
Er T Codes: Why They Happen
When an Er T code (such as Er T1) appears, the control is usually reporting that a temperature sensor is:
- open (a broken circuit)
- shorted
- reading outside its expected range
- unreadable because of wiring damage
Most common causes of Er T codes
- A failed temperature sensor (thermistor)
- Damaged sensor wiring
- Frost or ice interfering with airflow and the sensor’s reading
- The control board misreading the sensor
How to Handle Er T Codes
Step 1: Power Reset
Start with the same 30-second reset as above.
If the code clears and doesn’t come back, it may have been a temporary bad reading.
Step 2: Check for Frost or Blocked Airflow
Look for:
- heavy frost
- vents blocked by food
- anything obstructing a fan
These can throw off sensor readings and bring temperature errors back. Frigidaire’s recommended settings are 37°F for the refrigerator and 0°F for the freezer, and its manuals ask you not to block the air vents.
Step 3: Professional Sensor Testing
At this point, a diagnosis is the smart move. A technician will test:
- the sensor’s resistance against the expected value for its temperature
- the wiring harness
- the connections at the control board
- whether the board is reading the sensor correctly
That prevents replacing parts blindly — especially when the problem is wiring, not the sensor.
What About Other Codes Like E1, E2, PF, or HI?
Not every Frigidaire uses “Er” codes. Here’s what Frigidaire’s documents show for other common messages:
- E1 and E2: on the Frigidaire models that use them, E1 is a temperature sensor failure in the fresh food compartment and E2 is a temperature sensor failure in the freezer. Both are call-for-service codes.
- PF (Power Failure): shows after a power outage. Frigidaire says to acknowledge it by pressing Alarm Reset once power is back.
- H or HI (High Temperature): the refrigerator or freezer has been too warm. Frigidaire’s guides tie it to the freezer reaching 26°F or the refrigerator reaching 55°F, usually because a door was left open. Make sure the doors are closed and sealing.
- Door Ajar: a door has been open for more than 5 minutes. Close it to stop the alarm.
- SB or Sb: Sabbath Mode is on — not a fault. Your manual explains how to turn it off.
- DI SP: ice jammed in the dispenser chute. Clear the blockage.
If your display shows a code that isn’t on this list, write it down along with your model number. That’s exactly what a technician needs.
When to Call a Professional
Call for service when:
- the error comes back right after a reset
- cooling becomes unstable
- the freezer temperature rises or swings
- the display stops responding or flickers
- you see Er CE, an Er T code, SY codes, or another code your manual says needs service
The goal isn’t just to make the code disappear. It’s to get the refrigerator holding temperature reliably again — without replacing boards it doesn’t need.
Want an expert to look at it? Request Frigidaire repair and get your kitchen back to normal.
Final Thoughts
A Frigidaire Er code isn’t a random glitch. On the models that show it, Er CE usually points to communication between the boards, and the Er T codes (Er T1 to Er T6) usually point to temperature sensing. Frigidaire lists them as codes that may require service.
A proper 30-second reset may clear a one-time hiccup, but if the code returns, the cause is usually one of these:
- communication between the control boards
- the wiring harness
- a temperature sensor
- the control board reading its inputs
Finding the cause early is the best way to protect your food and avoid an expensive part replacement. Our Frigidaire refrigerator repair technicians are background-checked, we use genuine OEM parts, and our repairs come with a warranty of up to six months on parts and labor.
FAQ
Can I keep using my refrigerator with an Er code showing?
You can, but it isn’t recommended for long. If a sensor or the board communication is compromised, temperatures can drift — especially in the freezer. Keep the doors closed, put a thermometer inside, and schedule service.
Will a reset fix Er CE for good?
Sometimes, especially after a power surge or outage. Frigidaire’s reset is simple: unplug for 30 seconds, or use the breaker. If Er CE comes back quickly, it usually means a wiring or board problem that needs testing.
Does an Er T code always mean a bad temperature sensor?
Not always. It can also be wiring damage, frost around the sensor, or a control board problem. That’s why a technician measures the sensor’s resistance and checks the wiring before replacing anything.
Which Frigidaire models show Er codes?
Frigidaire’s support guide lists Er CE and the Er T codes (Er T1 to Er T6) for its four-door refrigerators. Other models use different messages — for example SY codes on some French door models, or E1/E2 on some bottom-freezer models. Your model number and manual tell you which list applies.
What does HI mean on my Frigidaire?
It’s a high-temperature alarm, not an error code. Frigidaire’s guides say it comes on when the freezer reaches 26°F or the refrigerator reaches 55°F, usually because a door was left open. Close the doors, check the seals, and give it time to recover.
Which is more expensive to fix: Er CE or an Er T code?
It depends on what testing finds. Er CE can get expensive if a board is replaced when the real problem was a loose connector. An Er T code is often a sensor or its wiring. A proper diagnosis keeps you from paying for parts you don’t need.
Frigidaire is a registered trademark of its owner. We are an independent appliance repair company and are not affiliated with or endorsed by Frigidaire.
