Question about Hayward H Series Induced Draft Abg 100,000 Heater
My gas pool heater is banging
Hayward, gas heater... a metal clinking noise and the hoses doing a twitch every 5 to 20 seconds. my experience says it is that diverter shield has come loose...disconnect everything. unscrew the in and outlet connections.look into the hole, you will likely see a metal, plate with two half circles, one facing the inlet hole, and if you go around to the other side you will see the other end of the plate, with a half circle. this plate comes loose, whatever they use doesn't last.
one guy used a small hose clamp to keep it from sliding up and down the post, I used that two part plumbers putty, to "weld" it in place....homedepot, comes in a small cylinder, it's two part, you cut off a piece and mold it in your hands, worktime is only 3 min. cures in an hour.... no more clinking metal or twitching hoses.
Posted on Jun 11, 2010
COULD IT BE THE PRESSURE SWITCH?
Posted on Jun 25, 2012
Banging noise could be several things. Is the pump runing water through it? If the water temperature in pool heater gets too high it will creaqte a banging noise until it cools down. The heater should turn off before your circulators shut down. If this is not the case-- you may need to rewire sequencing of heater and pump operation
Posted on Apr 27, 2010
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Posted on Jan 02, 2017
What you have is a water flow problem. The water should be going through the heater but it is by-passing it. The water inside the heater is boiling and trying to expand as steam that makes the banging sound. Their is a internal by pass in the water manifold on the side of the heater. If you take this apart you will find a disc on a spring contraption, if it is stuck open the water goes past the heater but still has pressure to kick the pressure switch and fire the heater. Either clean or replace this assembly. The other thing to check for is an external by-pass. This will be a gate valve bridging the inlet and outlet pipes. If you have one of these it should be 80-90% closed or the water goes through it and creates the same problem. This is not on all systems so don't be alarmed if you don't find it. Good luck.
Posted on Mar 29, 2010
SOURCE: i have ahayward H1001D1
If your external by-pass is closed almost all the way then it will be your internal by-pass. You find this assembly inside the water manifold at the side of the heater. Part should be about 70-80 bucks.
It is suppose to regulate the water flow so it has time to heat but not boil. Yours is probally missing the control disc and letting all the water flow past the heater so the water in the heater is boiling and that is the banging you hear. Good luck.
Posted on Sep 04, 2010
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