H0120300779 Genuine Wash Pump to Diverter Pipe for Haier, Fisher & Paykel Dishwashers, Internal Water Pipe, Haier 0120300779

H0120300779 is the genuine Haier pipe that links the wash pump (motor pump) to the diverter in Haier and Fisher & Paykel dishwashers. The diverter switches water between the spray arms, so this pipe carries the full flow from the pump on its way to the arms. A split pipe or perished end is a common source of water under the machine. Match the number on your old pipe before you buy.

Dishwasher leaking underneath? Check the pump to diverter pipe

When the wash pump runs, it pushes water at pressure through this pipe to the diverter, which then sends it to the lower, middle or upper sprayers. Because it carries pressurised hot water every cycle, the pipe and its joints can harden, crack or loosen with age. Leaks here usually show as water on the floor, a damp base tray, or a leak protection error that stops the cycle and runs the drain pump. A pipe that is kinked or blocked can also starve the spray arms and leave dishes dirty.

Part details

• Genuine Haier part number H0120300779
• Haier number 0120300779
• Internal pipe from the wash pump to the diverter
• Carries the pumped wash water to the spray arm diverter

Replacing the internal pipe

Switch off at the wall, turn off the water and remove the base or side panel to reach the sump area. Soak up any water in the base tray before you start. Note the pipe routing and clamp positions, fit the new pipe with its clamps tight and in the same places, then dry the base tray fully so old water does not trip the leak sensor.

Questions about this part

Why is my dishwasher showing a leak error?

Many dishwashers have a float switch in the base tray. Water from a leaking internal pipe collects there, lifts the float and stops the program. Fixing the leak and drying the tray clears the fault on most machines.