GE Refrigerator Error Code F80

The F80 error code on a GE refrigerator indicates that the control board is detecting an input signal from the hot water Temperature and Pressure (T&P) switch when no such signal should be present under normal operating conditions. The T&P switch is a safety component designed to monitor temperature and pressure levels in systems where hot water is involved. When the control board reads an active signal from this switch outside of expected operating parameters, it flags the F80 fault to alert the technician that something in this circuit is not behaving correctly.

The most common sources of this fault are a failed T&P switch that is stuck in a closed position, a short circuit somewhere along the wiring harness connecting the switch to the control board, or a wiring connector that has been pinched, damaged, or incorrectly seated. Because the fault is triggered by the presence of a signal rather than its absence, the issue is typically a closed circuit where an open circuit is expected. This means the switch itself may be faulty or the wiring is creating unintended continuity.

Diagnosis should begin with a physical inspection of the T&P switch and its associated wiring. Check the connector terminals for corrosion, damage, or contact bridging that could create a false signal. If the wiring appears intact, test the T&P switch directly for continuity in its resting state. A properly functioning switch should not show continuity when conditions do not warrant it. If continuity is present at rest, the switch requires replacement.