Haier · Hydro Split & All-in-One Systems
This error indicates that the low pressure switch (LP) has disconnected for 5 seconds, typically due to a very low flow rate in the system.
Click steps to track your progress.
Turn off the main power to the Haier unit at the circuit breaker.
Check the water supply pressure and ensure there are no closed valves in the water circuit.
Wait for at least 30 seconds, then restore power to the unit.
If the error persists, contact a qualified service technician to inspect the water flow and pressure switch.