ignition lockout

  1. T

    Pentair Mastertemp Ignition Lockout

    Hi, my heater is firing up, heats for 5 seconds and after several tries it stops and get the 3 blinks indicating “Ignition Lockout” I just replaced the thermal Regulator, Main Control Board, the ignitor, stack flue sensor and manifold bypass...was getting ready to replace ignition module but I...
  2. J

    MasterTemp 250 not heating - Ignition Lockout

    Hello, I am getting the ignition lockout signal on our pool heater. No other error code no led on the mother board. I have already replaced the igniter but that didn't help. Could you please suggest what else to check and how? I didn't find anywhere how to check if the gas is flowing in? Thanks...