E15
McAlpine
Cross-Flow / Incorrect Waste Kit Configuration
Disposal runs but water and waste are forced up into the second sink bowl connected via a McAlpine double bowl kit; LED flashes once-long, five-short.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Incorrectly installed McAlpine double bowl waste kit, Missing non-return valve in branch, Blocked main waste downstream of tee, Incorrect height of branch connections
How to Fix / Troubleshooting
Safety first: Turn off power to the disposal. Do not operate it while pipework is disconnected.
- Inspect the double bowl kit: Check the orientation of the McAlpine double bowl connector and ensure the disposal outlet is connected to the correct spigot.
- Check for non-return valve: If specified, ensure a McAlpine non-return valve is fitted on the branch to the non-disposal bowl to prevent backflow.
- Clear downstream blockage: Remove and clean the trap and horizontal waste pipe. A blockage after the tee will cause backflow into the other bowl.
- Reassemble with correct fall: Ensure all horizontal runs have a slight downward slope towards the main drain.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
McAlpine Double Bowl Waste Kit
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements