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Hello, I have pentair minimax 250 pool heater. When turning on the temperature, ddtc cycle to off. Nothing happen, no clicking noise, blower doesn't turn on , no error code on LCD. No led light in the back of ddtc. 1 flash on ignition module . Please help

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  • 305 Answers

Check main power supply for proper voltage, check primary and secondary sides or transformer, 24 vac getting to display screen???? 120 vac getting to blower???

Posted on Dec 05, 2013

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Posted on Jan 02, 2017

  • 22 Answers

SOURCE: i have a Pentair MiniMax NT 250,000 btu pool heater that fails to

Two reasons.

1. There is air in the gas line. Power down the heater and allow it to try igniting until lockout. If it locks out, repeat the process. Most lines will clear within 4-5 attempts to ignite.

2. A plugged burner orifice. Run a small pipe cleaner in the brass fittings on the burner tray. They may have small webs in them restricting gas flow.

If the unit is a Standard (STD on the plate inside) it has a flame sensor that may also be bad. That sensor is on the end of the single wire that is cloase to the ignitor wire near the burners. Also check for a losse ground wire on the heater.

Posted on Dec 21, 2008

  • 61 Answers

SOURCE: Pool heater will not heat

Im no pro, but I know there is an air sensor behind the main board. If the fan is running you probably have a problem with that sensor. If your lucky the air hose could have just popped off.

Posted on Apr 04, 2009

  • 128 Answers

SOURCE: minimax pool heater cuts out at 91 degrees when remotely set for

Check the temp reading on the heater. It is probably set at 91...heater control should be set to 104

Posted on Aug 30, 2009

  • 246 Answers

SOURCE: Pentair Minimax 250M

how many times it blink will tell you what is wrong check at the codes. unplug thermostat check fo homs 10 k around is fine at 80 degrees pressure switch require a by pass but DO NOT RUN THE HEATER WITH A BY PASS ANY CONTROL!!!!

Posted on Sep 19, 2009

  • 2 Answers

SOURCE: Pentair minimax pool heater (1 year old)

Board problem? Did you fix the problem?

Posted on Oct 19, 2009

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Sounds as If it is electrically heated if so you have a heating element out. The board senses it and shuts it down. It could be a programing problem i have provided the manual for it below is the link.Remember to rate my solution and leave testimonial it is how i earn my accomplishments Thanks

http://www.pentairpool.com/pdfs/MiniMaxNTHeater-DDTC-IG.pdf

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DDTC reads off at all times even when pool is circulating. It usually reads the pool temperature. Also, i don't have a green pressure LED. Can't start the gas heater either.


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