Skip to content

Welcome to the bigboi Help Centre

Your Source for Expert Advice, Troubleshooting, and Product Information

WashR DUO | The pump is running but does not reach the working pressure

If your WashR DUO is powered on and the motor is running but you're not achieving the expected spray pressure, there are several potential causes. Use the table below to diagnose and fix the issue:

Probable Cause Solution
Pump sucking air Check all hose fittings are secure and sealed tightly.
Valves worn or dirty Inspect and clean the valves. Replace if damaged or worn.
Unloader valve packing worn Check and replace the unloader valve packing if necessary.
Nozzle incorrect or worn Ensure the nozzle matches the pressure spec and is not blocked or worn. Replace if needed.
Water supply pressure low Verify that the tap is fully open and water flow meets the required minimum (5GPM at 20PSI).
Filter dirty Check, clean, or replace the inlet filter to ensure proper water flow.

Still Need Help?

If you've worked through these solutions and your WashR DUO still isn’t performing, reach out to our support team here — we’re here to help.

Let me know if you'd like this adapted for another WashR model.

 
 
 

Updated on 17 Jun 2025

WashR DUO | The pump is noisy
WashR DUO | The unit has an oil leak

Fast Delivery

Free EU Delivery for Orders Over €300

30 Day Guarantee

Up to 30 days to return your items if faulty

Payment 100% secured

We accept PayPal, ShopPay and most major Credit Cards

Customer service

Chat Support
Mon - Thu: 10:30 PM - 8:00AM CET
Fri: 8:00 PM - 4:00 AM
Sat-Sun: Closed

*Christmas in July Sale starts July 6th 9:00am AEDTSpend & Save promotion valid on orders placed during the Christmas in July sale period only. Minimum spend thresholds of $1,500 AUD and $2,500 AUD (excluding shipping) must be reached to qualify for 10% and 20% discounts respectively. Discounts are applied to the total order value at checkout. The Spend & Save discount excludes products already marked down or on sale. Offer valid while stocks last and cannot be combined with any other promotion or discount code. bigboi reserves the right to modify or withdraw this offer at any time. Additional terms, conditions, and exclusions may apply.