GE Refrigerator Error Code H1: Refrigerant Leak... | appliancefaults.com

Technical Background:

The H1 error code on a GE refrigerator typically indicates a problem within the sealed refrigeration system. The main control board (MCU) monitors the temperature using thermistors. If the temperature rises above a set threshold due to a suspected refrigerant leak or other issues, the H1 error code is triggered. Voltage paths to the compressor and fan motors are also monitored by the MCU.

Symptoms:

The homeowner may notice the refrigerator is not cooling properly, food is spoiling faster than usual, and an H1 error code is displayed on the control panel.

Possible Causes:

Refrigerant leak in the sealed system.
Faulty thermistor reading an incorrect temperature.
Defective main control board (MCU).
Blocked condenser coil reducing cooling capacity.
Compressor failure.
Internal short in the compressor windings.

Solution:

1

Visually inspect the evaporator and condenser coils for signs of oil residue, indicating a potential leak.
2

Use an electronic leak detector around all brazed joints and connections in the sealed system.
3

Check the thermistor resistance using a multimeter. Compare the reading to the temperature/resistance chart in the service manual. Replace if out of spec.
4

Verify the compressor is running by listening for its operation. Check voltage at the compressor using a multimeter (120V AC).
5

Inspect the condenser fan motor for proper operation. Replace if not spinning or running slowly.
6

If a leak is suspected, recover the remaining refrigerant using a refrigerant recovery machine. Repair the leak, evacuate the system, and recharge with the correct amount of refrigerant as specified on the unit's data plate.
7

If no leak is found, replace the main control board (MCU).

Safety Warning:

Disconnect power to the refrigerator at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. Refrigerant can cause frostbite. Be aware of high voltage (120V AC) when testing electrical components.

Prevention:

Regularly clean the condenser coils with a vacuum cleaner to ensure proper airflow. Check door seals for proper sealing to prevent warm air from entering the refrigerator. Avoid overloading the refrigerator, which can strain the cooling system.

Expert Tip:

Some GE refrigerators have a service mode. To enter service mode, simultaneously press and hold the 'Freezer Temperature Up' and 'Refrigerator Temperature Down' buttons for 3-5 seconds. Consult the service manual for specific diagnostics and tests available in service mode.

Frequently Asked Questions

•Where is the thermistor located in my GE refrigerator?

The thermistor is usually located near the evaporator coil inside the refrigerator compartment. Refer to the service manual for the exact location on your specific model.

•What type of refrigerant does my GE refrigerator use?

The type of refrigerant used in your GE refrigerator is listed on the data plate, typically located on the back of the unit near the compressor. Common refrigerants include R134a and R600a.

•How do I access the condenser coils to clean them?

The condenser coils are usually located at the back of the refrigerator, either exposed or behind a cardboard panel. Unplug the refrigerator and remove the panel to access the coils for cleaning with a vacuum cleaner brush attachment.

GE Refrigerator Error Code H1: Refrigerant Leak Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where is the thermistor located in my GE refrigerator?

•What type of refrigerant does my GE refrigerator use?

•How do I access the condenser coils to clean them?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: