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If you have the extra cash and can make it work just buy a new heater!! Supposedly this was a bad design and you really never know what the E04 is coding for and that comes right from the warranty service reps mouth. He is service rep for several of the major names and recommended the Hayward H...

ok I rewired everything after getting charred. Changed the water temp sensor etc. everything started back up fine for about 2 hours then E04 again!!!! I jumped the air pressure switch and everything started again just fine. I let it run a while and when I cam back the blower was off but the...

ok I have done absolutely everything! Except change blower. According to enter Tech Service the pressure switch that actually came in my heater from factory is meant for a much higher elevation. That Aside they said to jump the switch to see if it would start. I did this and the heater started...

Ok, I've checks ohms, I've checked volts, I switched out the air pressure switch, I tested the igniter, I changed the flame sensor, I've check the gas. The fan blows hard as I said. The rubber tube seems to be in good condition and debris free. Unit did fire for a few hours then E04 again. When...

Thanks Paul! Ive looked into the heater and the blower is running and seems to be blowing air quite well. The tube is obstruction free and in pretty good shape. ( this unit is inside a pool house utility room) could anything else be trouble shot? Or should I just buy the new blower motor?

I have a Pentair Minimax NT with error code E04 and unit will turn on blower will start then you here the ignition for the igniter. It fires either for a few seconds or a minute or two then shuts down and the error message comes on.