The display shows H1; the unit may run the fan only or limit compressor operation.

Note: H1 on many Hotpoint units is informational, indicating that the room is too cold for cooling mode.

Steps:

• Check room temperature: If the room is already cool (e.g., below 18°C / 64°F), the unit may intentionally prevent compressor operation.
• Change mode: Try switching to FAN or HEAT (if heat pump model) as appropriate.
• Sensor check: If the room is warm but H1 appears, inspect the ambient thermistor for proper placement and operation as described for E1/F1.

Technician help: If H1 appears incorrectly and the sensor is good, the main control PCB may require replacement.