20 Most Recent Pentair MasterTemp high Performance Gas Heater 200 BTU () - Page 6 Questions & Answers

this heater will display 2 red light related problem 1-service the system mean you need to clean you filter, and service the heater mean it may be a problem with the heater this 2 you will be able to see it in key pad control the heater ,now reset the board and see what happens (CUT THE POWER ON/OFF UNCE )

This can mean many things, and just a heads up the minimax nt heater is notorious for having issues....so you are on borrowed time!

With system on and heater on open the front small panel door.
Turn off he black toggle switch located on the lower part of he inside of this panel.

Unplug the two pin white temp sensor from the back of the circuit board.

Wet your finger with spit, out your finger on the two pins on the board that you just unplugged from.

Leave your finger on the pins and toggle the heater switch back to “on”

If the heater Tries to fire the issue is the temp probe.

If it doesn’t then it’s probably the circuit board.

Don’t worry this is a real field test!