Pentair Master Temp 400 (yes another thread)


Old style board …

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New style board for connected heater with RS-485 connector on lower right..

Pentair_MasterTemp_New_Connected_Control_Board.png

Both have SA in circle in middle of board.

Your board has no Pentair labels or part numbers…

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Also look at the capacitors on the upper right. Pentair uses black capacitors, yours are silver.
 
How much were you charged for that board? A new Pentair board costs round $450 + installation.
 
Look at other side of board and see if it has Pentair markings like here…

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You still have the old board? It was probably good.

Your pool tech was a hack if the first thing he did was replace the PCB.
 
I do not, it was replaced as part of the closing agreement for the house
Given the history and 8 years old I would replace the heater and start new.

If you want to assess the condition of the heater and decide if it is worthwhile putting money into it you need to remove the manifold and examine the bypass valve and heat exchanger. Repairs would only be economical as DIY. Makes no sense to pay a tech to do a lot of labor.
 
Given the history and 8 years old I would replace the heater and start new.

If you want to assess the condition of the heater and decide if it is worthwhile putting money into it you need to remove the manifold and examine the bypass valve and heat exchanger. Repairs would only be economical as DIY. Makes no sense to pay a tech to do a lot of labor.
If I go the replacement route:

1) what would be a reasonable cost in your opinion to do like for like?
2) is there a different heater I should look in to?

Appreciate all your feedback!
 
New MasterTemp 400 is around $4,000 for a DIY install. 6 is not outrageous for a Pool Styore price with installation and warranty.

MasterTemp 400 is a workhorse and 8 years is a good run for a heater.
 
That's the work of of the chlorinator working overtime. Don't put another cent in it and move on with new. Please re-pipe to eliminate the tablet chlorinator so it can never happen again that way.
 

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