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good call, I saw a small leak coming from the 2" cap above that. I was able to clean it out, it had a broken metal strainer with a lot of DE and small pieces of broken plastic from the mesh filter. Fortunately, the pool jet's pressure was able to build back up but only for a short while until it...

Do you think my torn mesh filter in the pool filter can be related as well since it's blowing back the DE? I will continue to troubleshoot and follow the steps provided.

This is before the heater lights, when it does heat which was the other day I just remember seeing and feeling the burning water coming out of the jets. Almost like a haze, I immediately turned it off and heard a banging noise. It seems like this heater is all sorts of issues at this point...

thank you for this information, I'm having trouble getting the heater to ignite right now without the service light coming on. Before the service light comes on the heating light blinks and blinks, the digital temp goes from 80 to 180 to 0 and 80 flickerings constantly. I will check the rest...

I switched the system back on again after turning it off, it looks like the DE is shooting back out again. The spa jets seem to be more aggressive than before, and the water level is also higher than before.

I have a whisper flo 2.0hp - I also started noticing a sound like a water slapping noise at the elbow of the pipe that goes into the heater. The motor is not more than 3 years old either.

Hello all, just a bit of an update here. The pool heater has not been fixed yet, but recently I just saw some DE blowback in random areas of my pool. I removed the pool filter, and cleaned it again (it was cleaned a month ago by a pool company) I looked at it and saw some broken plastic pieces...

another update, fired up the heater this morning with the pool. It turned on when I hit the head pool mode, worked like normal for 5 minutes, and when I went back to check it looks like the burner stopped but fans were on as well as the "heating" light was flashing again. I hit the "spa" button...

sorry the unit is about 7-8 years old, no other lights on from the back board while the issue occurs

It would be this one attached, I just installed this new membrane as well since the old one seemed to be falling apart. I was playing with the heater after, and the heating light on the membrane flashed and doesn't heat. After a restart turning it back on the heating light goes solid and I hear...

duplicate response by me.

Hey guys, first time posting here, and really actually enjoy browsing through the forum. My pool heat a Pentair Max E seems to be kicking on and off when switched to Pool mode but has a blinking "Heating" light and a solid "service" light. A local service guy recently replaced the thermal...