Error code · Freezer

Frigidaire Freezer Reading S or E8, Which Means a Shorted Thermistor

Medium · inspection needed

Code: S or E8
Appliance: Freezer
Brand: Frigidaire
Warranty: 30-day workmanship

What S or E8 means

S or E8 on Frigidaire upright freezers with electronic control, including the Deluxe half-moon, vertical, square and rectangle control boards, such as FPUH19D7LF, means the thermistor is shorted. The control reads the temperature sensor circuit as if the two wires were touching, so it cannot read the real temperature. The freezer may run too long or not enough. Plenty of these upright freezers are still in daily use, and we repair them.

Common causes of S or E8

The thermistor itself
Pinched or damaged sensor wiring
A moisture-damaged plug
The control board input

✓ One safe check you can try

1. Make sure the plug is seated and the door shuts tightly. 2. Give the freezer a minute without power, then restore it. 3. Look at how cold the inside feels after a few hours. 4. If S or E8 returns, protect the food and call us to schedule service.

! Why to stop there

A shorted reading can come from the sensor, the wiring or the board, and it cannot be told apart from outside the freezer.
We test the thermistor and its wiring before we suggest the board.
We tell you plainly if the freezer is old enough that repairing it does not make sense.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Freezer codes

Door AjarWhat the Door Ajar Alarm on a Frigidaire Freezer Means E or E1Frigidaire Upright Freezer Showing E or E1: Thermistor Error E2Frigidaire Upright Freezer Reports E2 As a Stuck Key E5Showroom Mode E5 on a Frigidaire Upright Freezer E7E7 on a Frigidaire Upright Freezer: Stuck Key or Fail-Safe Mode HIHigh Temperature Reading HI on a Frigidaire Upright Freezer High TempWhy a Frigidaire Upright Freezer High Temp Alarm Sounds O or E9Frigidaire Upright Freezer Code O or E9: Open Thermistor

S or E8S or E8 questions

Is S the same as E8?

Yes. On these freezers the letter S and the code E8 both mean a shorted thermistor. A shorted reading can come from a damaged wire or a wet plug.

Will the freezer keep my food frozen with E8?

It may, but the control cannot read the real temperature. Check that it is staying cold and move food if it warms. The sensor itself is the next check.

Do you repair this kind of freezer?

Yes. We repair older upright freezers and give a written price before we start. The board comes last. Tell us how long the code has been showing, and whether the freezer felt colder or warmer than usual around that time.

Book a visit

Still seeing S or E8?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 844-8518