H28 - Abnormal solar sensor

What does H28 mean?

This error indicates a problem with the solar temperature sensor, which might be defective or disconnected. This affects the system's ability to integrate with solar heating components.

• Solar temperature sensor is defective
• Solar temperature sensor is disconnected

Click steps to track your progress.

1. 1

   Note the H28 error code displayed on the control panel.

2. 2

   Turn off the power supply to the Panasonic Aquarea Heat Pump at the main circuit breaker. Wait for at least 5 minutes, then restore power.

3. 3

   If the H28 error code reappears, contact an authorized Panasonic service technician for diagnosis and repair of the solar sensor.