E19 — Pool Mixing Valve Water Outlet/Pool Water Temperature sensor Abnormality

What does E19 mean?

This error indicates a problem with the temperature sensor connected to the pool mixing valve water outlet or the pool water. The sensor might be disconnected or have an electrical fault (open or short circuit).

• Loose or damaged wiring to the pool water temperature sensor.
• A faulty pool water temperature sensor.
• An intermittent electrical issue affecting sensor readings.

Click steps to track your progress.

1. 1

   Turn off the main power to the Haier unit at the circuit breaker.

2. 2

   Wait for at least 30 seconds.

3. 3

   Restore power to the unit and check if the error code clears.

4. 4

   If the error persists, contact a qualified service technician to inspect the sensor and its connections.