Where can I get a1hp 220 volt pentax water pump &smart head to buy

Sounds like a faulty pressure switch. Contact the maker.

https://www.google.com/search?q=pentax+smart+head

Videos and earlier Fixya help

https://www.google.com/search?q=pentax+smart+head+pressure+switch

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new pump perhaps

To modify the pressure:

· Start the pump.

· If the SET LED blinks, hold key + down until the SET LED

remains on.
· Then press keys + or - to modify the pressure value

This is not a camera

Check the pressure switch. Be sure you have enough water available. Check for a leak. What are you pumping. Is it pumping. I am not familiar with this pump so I am just listing some points to check. If it is a submersible well pump it can develop a lot of pressure.

There's not enough water running into the pump this is why its cutting out , hope this helps

yes, buy a better pump that is not smart

hi i have a pentax water pump the smart head, it works very good .one day the pump did not come on when i turn the pipe on so i take off the switch i put it back on the pump came on water was flowing as normal when time to turn the pipe off the pump will not cut off so i switch it back off and call an electrician he check it and he said i need to change the circuit board in the pump so he did now the started to work only on the lower pipe but it takeing long to come on and cut off.the upper pipe when turn on the pump not coming on i open all the union to bleed make sure on air in the line but still having the same problem can this be the head it self need changing?

Look on the pump itself for wiring instructions. Usually if a pump can be wired to multiple voltages there is a diagram either on the side of the pump or under the wiring cover. I tried to locate a manual online with no success. If it can be wired 110 volts, you will get the same performance but your amperage will be double the 220 volt amperage.