Recent content by T Man

  1. T Man

    Brand-new Pentair Mastertemp 400 won't ignite

    btw, the old heater issue last summer turned out to be the board. I'm installing the check valve that you suggested between the chlorinator and the heater. thanks again, your help is truly appreciated!
  2. T Man

    Brand-new Pentair Mastertemp 400 won't ignite

    Perfect! I feel like a complete idiot! thank you James, it fired right up! I cannot believe I overlooked that thank you very much! :smile:
  3. T Man

    Brand-new Pentair Mastertemp 400 won't ignite

    Installed brand new replacement Mastertemp 400 but it won't ignite powered up, pad reads 62* water temp. heat is set to highest at 104* as well on easy touch and phone(automation). removed jumper & installed easy touch leads as blower winds up, I get service heater light that goes out after...
  4. T Man

    Mastertemp 400 NG Bad Board?

    I'm with you on the tabs... the chlorinator is off, I just use it when we are gone. I run the pump 24/7 1950rpm. Pentair rep told me that was "best" for whatever that's worth. I will let you know what I find out with the resistor & multimeter. your help is very appreciated! thank you very much
  5. T Man

    Mastertemp 400 NG Bad Board?

    It certainly did not pass the hot water test. didn't move at all. I will get a new one installed tomorrow. Did not see the internal bypass, not able to get 100% in line with the hole (sand filter in the way). fired it up again without the thermal regulator and it did the same thing, but this...
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  9. T Man

    Mastertemp 400 NG Bad Board?

    no luck with a short video when I click the heater breaker to on, I get all 5 of the LEDs on the back of board on for 3 seconds - few seconds later the blower kicks on at the same time as blower winding up, I get the AFS LED for 1 second... about 3 min later, the boiler will kick on run a...
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  12. T Man

    Mastertemp 400 NG Bad Board?

    well now I'm really confused. started to shoot video as I clicked the breaker back on. temp on membrane pad is set to 104. LED on membrane reads 99 (actual water temp is 86*) blower comes up for about 1 minute then the boiler fired up it ran for about 2 minutes but shut down, blower still...
  13. T Man

    Mastertemp 400 NG Bad Board?

    Replaced the thermistor today with no luck. now the blower will run for a few minutes then shut down... no ignition. kicks back on then off . when the blower does kick off I get a 1 second or so AFS led on back of board. water temp is set to 104* but showing 105* on membrane LED - so the...
  14. T Man

    Mastertemp 400 NG Bad Board?

    Fantastic! if this is the culprit, which it seems, you just saved me serious $$$! thank you! mine is looking a bit worn. New one on the way, I will post an update when replaced. Thank you!
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