GE Profile Cooking Probe "Probe Too Hot" Error:... | appliancefaults.com

Technical Background:

The oven's Main Control Unit (MCU) monitors the voltage signal from the temperature probe. This signal corresponds to the probe's resistance, which changes with temperature. If the MCU detects a voltage outside the expected range (indicating excessive temperature), it triggers the "Probe Too Hot" error. This safety feature prevents overheating. The voltage path runs from the probe through the wiring harness to the MCU.

Symptoms:

Homeowners report the oven displays a "Probe Too Hot" error even when the probe is not in use or the oven is cold. The oven may become inoperable, preventing baking or broiling.

Possible Causes:

Faulty temperature probe
Shorted probe wiring
Defective oven control board (MCU)
Loose probe receptacle connection
Excessive oven temperature exceeding probe limits

Solution:

1

Disconnect power to the range at the breaker panel.
2

Locate the temperature probe receptacle on the oven wall.
3

Inspect the probe and wiring for visible damage or charring.
4

Use a multimeter to test the probe resistance (typically 1000-2000 ohms at room temperature). Replace the probe if resistance is outside this range or reads open/shorted.
5

Check the wiring connections at the receptacle for looseness or corrosion. Clean or tighten as needed.
6

Test voltage at the receptacle with the probe disconnected, should read approximately 5V DC. If significantly higher or lower, the MCU is likely at fault.
7

If the probe and wiring appear good, suspect a faulty oven control board (MCU). Replace the MCU as the error likely originates here.

Safety Warning:

Always disconnect power to the appliance at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed. High voltage components are present; exercise extreme caution.

Prevention:

Avoid bending or crimping the probe cable. Ensure proper storage when not in use. Regularly inspect the probe and receptacle for damage.

Expert Tip:

On some GE Profile models, you can enter service mode by pressing and holding the 'Bake' and 'Broil' buttons simultaneously for 5 seconds. This may allow you to clear the error code temporarily or run diagnostic tests.

Frequently Asked Questions

•What is the typical resistance range for a functioning GE temperature probe at room temperature?

A functioning GE temperature probe typically exhibits a resistance between 1000 and 2000 ohms at room temperature (approximately 70-75 degrees Fahrenheit).

•How do I access the oven control board (MCU) on a GE Profile range?

Accessing the oven control board typically involves removing the back panel of the range. Be sure to disconnect power first. The control board is usually mounted within a metal housing.

•If the probe resistance is within range, what other tests can I perform to diagnose the MCU?

With the probe disconnected, test the voltage at the probe receptacle. You should see approximately 5V DC. If that voltage is significantly off (much higher or lower), it points to a faulty MCU. Also inspect the MCU board for burnt components.

GE Profile Cooking Probe "Probe Too Hot" Error: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical resistance range for a functioning GE temperature probe at room temperature?

•How do I access the oven control board (MCU) on a GE Profile range?

•If the probe resistance is within range, what other tests can I perform to diagnose the MCU?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: