Cooper & Hunter FHCC error code

What it means

FHCC means the refrigerant sensor has malfunctioned. The manual says the sensor cannot be repaired and must be replaced only with the manufacturer-specified sensor.

Urgency

Likely causes

1. Cooper & Hunter Astoria R454B owner manual states FHCC displays when the refrigerant sensor malfunctions.
2. The manual states the refrigerant sensor cannot be repaired.
3. The manual states replacement must use the sensor specified by the manufacturer.

Homeowner fix

Do not restart cooling or heating until the refrigerant sensor is serviced. Do not bypass the sensor. Keep the safety system powered unless service or emergency personnel tell you otherwise, and call a licensed HVAC technician.

When to call a pro

Call a licensed HVAC technician. Tell them Cooper & Hunter identifies FHCC as refrigerant sensor malfunction and says the sensor is replace-only with the manufacturer-specified sensor.

Repair vs replace

R-454B leak-detection and refrigerant-sensor faults are normally repairable by a qualified technician. Compare replacement only if the system is older, out of warranty, or the diagnosis includes multiple major components.

• Cooper & Hunter Astoria Pro 6,000 BTU R-454B 208/230V (CH-PRO06MASTWM-230VI / CH-RHP06F9-230VO)

  Astoria Pro Series

• Cooper & Hunter Astoria Pro 9,000 BTU R-454B 208/230V (CH-PRO09MASTWM-230VI / CH-RES09-230VO)

  Astoria Pro Series

• Cooper & Hunter Astoria Pro 9,000 BTU R-454B 208/230V (CH-PRO09MASTWM-230VI / CH-RHP09-230VO)

  Astoria Pro Series

• Cooper & Hunter Astoria Pro 12,000 BTU R-454B 208/230V (CH-PRO12MASTWM-230VI / CH-RES12-230VO)

  Astoria Pro Series

Parts for this line

The parts catalog for Cooper & Hunter Astoria Pro Series lists 5 sourced replacement parts for this product line.

For your technician

Technician note: verify refrigerant sensor wiring/connection and controller input; replace a failed sensor only with the manufacturer-specified part and confirm leak-detection operation before returning system to service. Page context: Cooper & Hunter maps this display to the Astoria Pro Series line; source: manufacturer documentation; display convention: match the letter F, letter H, letter C, and letter C marker exactly before comparing neighboring codes.

Which systems show it

Astoria Pro Series

Related troubleshooting

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

Related codes

Source

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