Tucson Equinox fault 4D
Air trapped in the system (pump fails to stop)
Shower pumpWhat it means
Pump fails to stop because air is trapped in the line or pump.
Likely causes
- Air trapped in the system
- Air trapped in the line/pump
Where to start
- Purge the system with the pump unpowered
- Remove the shower head and hose and hang into the shower tray
- Operate at full power for five minutes on both Hot and Cold outlets
The full answer, free
- 3 more checks in order
- The readings and component tests from the manual
- How to put it right, step by step
- The manual page for this fault (page 15), right under the answer
Safety: Isolate power and water, and prove dead before you open or test the pump.
From the Tucson manual for the Equinox. Check the model on the data plate before you order parts.
Other Tucson Equinox fault codes
- 2.AAir in the system (noise)
- 2.CFlow rate too high (water's velocity)
- 2AAir in the system (noise)
- 3.AAir trapped in pump (noise in pump)
- 3.CVibration from pump mounting surface (noise in pump)
- 3AAir trapped in pump (noise in pump)
- 3CVibration from pump mounting surface (noise in pump)
- 4.AOutlet open, tap or leak (pump fails to stop)
- 4.DAir trapped in the system (pump fails to stop)
- 4AOutlet open, tap or leak causing pump to fail to stop
- 5.AWater temperature too high (unstable temperature)
- 5AWater temperature too high (unstable water temperature)
- 6.AStrainer filters are blocked (no water delivered)
- 6.CAir locked (no water delivered)
- 6AStrainer filters are blocked (pump runs but delivers no water)
- 6CAir locked (pump runs but delivers no water)
- 7.AIncorrect pipework sizing (insufficient flow rate)
- 7.FStrainer filters are blocked/debris (insufficient flow rate)
- 7AIncorrect pipework sizing (insufficient flow rate)
- 7FStrainer filters blocked/debris (insufficient flow rate)
- 9.AHose connection loose/damaged O-rings or not fitted correctly (flexible hose leak)
- 9AHose connection loose/damaged O-rings or not fitted correctly (flexible hose...