Senville EH02 error code

What it means

EH02 points to an indoor control-board electrical timing signal fault. The Senville guide identifies indoor PCB replacement as the repair path.

Urgency

Likely causes

1. Indoor PCB zero-crossing circuit failure
2. Abnormal AC waveform or electrical input to the board
3. Indoor control board component fault
4. Power event damaging the indoor PCB

Homeowner fix

Power cycle once if safe and then leave the unit off if the code returns. Do not open electrical covers.

When to call a pro

Call a licensed HVAC technician if EH02 returns after one safe reset or basic airflow checks.

Repair vs replace

Most causes are repairable, but compare repair with replacement on an older out-of-warranty system if a board, compressor, or refrigerant-circuit repair is expensive.

• 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 supply waveform and board power, inspect for PCB damage, and replace the indoor PCB when the zero-crossing fault persists. 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, 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