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Pump Master Junior


dax021
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Does anyone possibly have a wiring diagram for the above system which is one the back of a panel powering a solar pump?  The board is labelled pmpver4.pcb MicroCare.  It seems to have got rainwater into the housing and one of those little flat goodies with 2 or 3 legs and a heatsink seems to have popped (don't know what it's called).  There or 3 of these in a row, 2 have 3 legs and the popped one looks like it only has 2 legs.  Unfortunately I can't read any of the writings on the component.  Much appreciated  

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11 hours ago, dax021 said:

Does anyone possibly have a wiring diagram for the above system which is one the back of a panel powering a solar pump?  The board is labelled pmpver4.pcb MicroCare.  It seems to have got rainwater into the housing and one of those little flat goodies with 2 or 3 legs and a heatsink seems to have popped (don't know what it's called).  There or 3 of these in a row, 2 have 3 legs and the popped one looks like it only has 2 legs.  Unfortunately I can't read any of the writings on the component.  Much appreciated  

I currently have one at home which I need to repair - also got some water in. There are two FETs (3 legs) and a diode (2 legs) (all 3 TO220 package components) in a row - I will get the part numbers tonight. Those might not be the only components which need to be replaced though.

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Hey, thanks superdiy, much appreciated.  I can read the writing on the middle FET, IRF540N, IOR P2030, 4K6L - is this the same as a 45N15? Can I go to an electronics shop and ask for a BYV29 and they'll give me right part to swap out the blown one?  Everything else looks ok, as in no obvious damage, except one track burnt with the diode.  Should be easy enough to repair.  I just hope that's all that's wrong.  Allpower quoted me R700 to replace the board

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11 hours ago, dax021 said:

Hey, thanks superdiy, much appreciated.  I can read the writing on the middle FET, IRF540N, IOR P2030, 4K6L - is this the same as a 45N15? Can I go to an electronics shop and ask for a BYV29 and they'll give me right part to swap out the blown one?  Everything else looks ok, as in no obvious damage, except one track burnt with the diode.  Should be easy enough to repair.  I just hope that's all that's wrong.  Allpower quoted me R700 to replace the board

The IRF540N is similar to the 45N15, if they've used IRF540's in your unit than it is not a problem.

You local electronics supplier might or might not have the diodes, I can't tell, but otherwise you can try one of the bigger suppliers e.g.

  • Mantech R8.79 ex VAT
  • RS R9.71 ex VAT each per pack of 5
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