mypros+
Error code reference

GE Refrigerator Error Code F-1- (segment f)

Ice Room Sensor Error

GE codesGE refrigerator codes

Ice Room Sensor Error – sensor housing separation, contact error, disconnection, short circuit, or detected temperature more than 149°F or less than -58°F.

First step from the service manual

Check voltage of MAIN PCB CN32 #3 to CN75 #1; should be between 4.5V to 1.0V.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for F-1- (segment f).

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F-1- (segment f) means on a GE refrigerator

The F-1- (segment f) error code on a GE refrigerator indicates an Ice Room Sensor Error. This fault is triggered when the main control board detects a problem with the ice room temperature sensor, which monitors the temperature inside the ice maker compartment. The error activates under several conditions: physical separation of the sensor from its housing, poor or broken contact at the connector, a disconnected wiring harness, a short circuit in the sensor circuit, or a temperature reading that falls outside the acceptable operating range (above 149°F or below -58°F). Any of these conditions cause the PCB to flag the sensor circuit as failed.

The ice room sensor is a thermistor-based component that sends a variable voltage signal back to the main PCB. The primary diagnostic check involves measuring the voltage between MAIN PCB connector CN32 pin 3 and connector CN75 pin 1. Under normal operating conditions, this voltage should read between 1.0V and 4.5V. A reading outside this range confirms either a wiring fault, a failed sensor, or a problem at the board itself. Voltage near 0V or at the supply rail typically points to a short circuit or open circuit, respectively.

Common root causes include a sensor that has physically dislodged from its mounting housing in the ice compartment, corroded or loose connector pins at CN32 or CN75, damaged wiring in the harness running to the sensor, or a thermistor that has drifted out of specification due to age or moisture exposure. In rare cases, the main PCB itself may misread the signal due to a board-level fault. Proper diagnosis requires a multimeter and access to the main control board connector locations.

Source: manufacturer service documentation.

Common causes of F-1- (segment f)

  1. 01

    Sensor Dislodged from Housing

    Wiring / connection

    The ice room sensor can physically separate from its mounting housing due to vibration or ice buildup, breaking the thermal contact needed for accurate readings. Visually inspect the sensor in the ice compartment to confirm it is seated securely.

  2. 02

    Loose or Corroded Connector Pins

    Wiring / connection

    Poor contact at MAIN PCB connectors CN32 or CN75 can cause intermittent or absent signal, triggering the fault. Inspect both connectors for bent pins, corrosion, or a connector that is not fully seated.

  3. 03

    Damaged Wiring Harness

    Part replacement

    The wiring running from the ice room sensor to the main PCB can be pinched, chafed, or broken, causing a short circuit or open circuit in the sensor signal line. Use a multimeter to check continuity along the harness.

  4. 04

    Failed Ice Room Thermistor

    Part replacement

    The thermistor itself can fail due to age, moisture intrusion, or a manufacturing defect, causing it to report temperatures outside the valid range of -58°F to 149°F. Confirm by measuring the voltage at CN32 pin 3 to CN75 pin 1 and checking whether it falls outside the 1.0V to 4.5V window.

  5. 05

    Main PCB Fault

    Part replacement

    If all wiring and the sensor check out correctly but the voltage reading at CN32 and CN75 remains out of range, the main control board itself may be misinterpreting or corrupting the sensor signal. Board replacement is required if this is confirmed.

See the test procedure for each cause

Frequently asked questions about F-1- (segment f)

What does F-1- (segment f) mean on a GE refrigerator?
The F-1- (segment f) code is an Ice Room Sensor Error. It means the main control board has detected a problem with the temperature sensor in the ice maker compartment, such as a disconnected sensor, a short circuit, loose connector contact, or a temperature reading above 149°F or below -58°F. The ice maker may stop functioning while this error is active.
Can I fix the F-1- (segment f) error myself?
Some causes of this error are DIY-friendly. You can check whether the ice room sensor has separated from its housing and reseat it, and you can inspect the wiring connectors at the main PCB for looseness or corrosion. If those steps do not resolve the fault, diagnosing the sensor thermistor or the control board requires a multimeter and comfort working near live appliance components, which may be better suited to a technician.
Is it safe to keep using my refrigerator while this error is showing?
The refrigerator's cooling system will generally continue to operate with this error present, so food safety is not immediately at risk. However, the ice maker may stop working correctly, and the underlying fault could indicate a short circuit in the sensor wiring. It is best to diagnose and repair the issue promptly rather than leaving it unaddressed.
How much does it cost to repair the F-1- (segment f) error on a GE refrigerator?
Repair costs depend on the root cause. If the fix is simply reseating a loose sensor or connector, there may be no parts cost, though a service call can run anywhere from $75 to $150. Replacing a failed thermistor sensor is typically in the $20 to $80 range for the part. If the main control board needs replacement, parts alone can range from $100 to $350 or more, plus labor.
Will resetting the refrigerator clear the F-1- (segment f) error code?
A power reset may temporarily clear the error code from the display, but the fault will return if the underlying problem has not been fixed. The main control board continuously monitors the ice room sensor voltage, so any persistent wiring fault, sensor failure, or connector issue will cause the code to reappear after the reset.

Related GE refrigerator codes

All GE refrigerator codes
View all 540 GE refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass