GE Appliances F20 error code

What it means

The compressor overload protection is operating and the manual points to EEV, terminal, or low refrigerant causes.

Urgency

Likely causes

1. Electronic expansion valve is bad
2. Electronic expansion valve terminal is bad
3. Lack of refrigerant

Homeowner fix

Turn the system off. Do not add refrigerant, open panels, or keep resetting the system.

When to call a pro

Call GE Appliances ductless support or a qualified HVAC technician if F20 returns. Tell them the manual lists F20 as module operated overload/compressor overload protection.

Repair vs replace

Overload faults may involve EEV or refrigerant diagnosis; compare sealed-system repair with replacement on older systems.

• GE Appliances Altitude 9,000 BTU R-454B 208/230V (GS09WB2BEA / 1G09AD2BEA)

  GE Altitude

• GE Appliances Altitude 11,800 BTU R-454B 208/230V (GS12WB2BEA / 1G12AD2BEA)

  GE Altitude

• GE Appliances Altitude 13,500 BTU R-454B 208/230V (GS15WB2BEA / 1G15AD2BEA)

  GE Altitude

• GE Appliances Altitude 17,000 BTU R-454B 208/230V (GS18WB2BEA / 1G18AD2BEA)

  GE Altitude

For your technician

Official GE Altitude service manual, H2 highwall F1-F45 note and H6 module-overload flowchart: F20 - module operated overload; causes are bad EEV, bad EEV terminal, or lack of refrigerant. Page context: GE Appliances maps this display to the GE Altitude line; source: GE Appliances Single-Zone Service Manual, Ductless Multi-Split Heat Pumps, Altitude models 1G09AD2BEA through 1G3036AD2BEA and GSxxWB2BEA highwalls; display convention: match the letter F and twenty marker exactly before comparing neighboring codes.

Which systems show it

GE Altitude

Related troubleshooting

Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.

Related codes

Source

Next step