GE Appliances F27 error code

What it means

The compressor current sampling/block protection is abnormal, and the compressor may not run.

Urgency

Likely causes

1. Ambient temperature is too low
2. Compressor damage

Homeowner fix

Turn the system off. If outdoor temperature is extreme, wait for conditions to improve; otherwise do not keep resetting the system.

When to call a pro

Call GE Appliances ductless support or a qualified HVAC technician if F27 returns in normal conditions. Tell them the manual lists F27 as compressor current sampling or compressor block fault.

Repair vs replace

Compressor block faults can be expensive; compare compressor/inverter 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 outdoor fault table and H10 compressor-block flowchart: F27 - compressor current sampling circuit fault / compressor block fault; causes include low ambient temperature or compressor damage. 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 seven 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