Senville EHC2 error code

What it means

EHC2 combines a refrigerant leak alarm with a refrigerant sensor operating out of range. Senville identifies both sensor replacement and refrigerant-line repair as possible work.

Urgency

Likely causes

1. Refrigerant leak detected by the sensor
2. Sensor operating outside its allowed range
3. Damaged refrigerant line or fitting leak
4. Failed refrigerant sensor module

Homeowner fix

Turn the system off if safe and ventilate. Do not bypass the alarm, open the unit, or restart repeatedly.

When to call a pro

Call a licensed HVAC technician promptly if EHC2 appears.

Repair vs replace

A leak-sensor replacement or minor leak repair may be reasonable, especially under warranty. If the repair involves a coil, buried line set, or repeated refrigerant loss, compare the quote with replacement.

• Senville LETO 9,000 BTU R-454B 115V (SENL-09CD-ILL / SENL-09CD-OL)

  LETO Series

• Senville LETO 9,000 BTU R-454B 208/230V (SENL-09CD220-ILL / SENL-09CD220-OL)

  LETO Series

• Senville LETO 12,000 BTU R-454B 115V (SENL-12CD-ILL / SENL-12CD-OL)

  LETO Series

• Senville LETO 12,000 BTU R-454B 208/230V (SENL-12CD220-ILL / SENL-12CD220-OL)

  LETO Series

Parts for this line

The parts catalog for Senville LETO Series lists 10 sourced replacement parts for this product line.

For your technician

Technician note: verify leak alarm, test sensor operating condition, repair refrigerant-line leakage, replace the sensor if out of range, then recharge and verify operation. Page context: Senville maps this display to the LETO Series line; source: Senville LETO Series Error Code Reference Guide plus official EL 0C and PC 0L support articles; display convention: match the letter E, letter H, letter C, and two marker exactly before comparing neighboring codes.

Which systems show it

LETO 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

Next step