Question about Hayward H Series Induced Draft Abg 100,000 Heater

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Good morning, I have a hayward agph models h100Id1, Went to turn it on yesterday and it started fine but then started banging and shaking. Cobwebs? I read something about the diverter plate might be loose. Any suggestions? Regards Virginia

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I'm assuming that you have checked the water circuit and have bleeded it correctly and thoroughly - air bubbles will cause that when they go thru the heat exchanger.
The banging and shaking are caused by the blower from the burner- it's either:
1 - the motor is dislodged from its casing and the blades of the propeller fan are hitting the case walls - the casing will have to be opened and the motor refitted properly;
2 - the bearings of the shaft of the motor of the blower are damaged and the shaft oscillates - the entire blower will have to be replaced, here's a new one - number 2
3 - the propeller is loose on the shaft - the blower will have to be dismantled and the propeller reattached .
Here is an exploded diagram to help you with the dismantling

Posted on May 29, 2011


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Model h100id banging noise when turned on shuts off

VERY low water flow!
Or... No water flow.
This heater as all heaters do, need to have sufficient water flow thru them, or else they Bang like this.
This then creates a problem, for future banging - due to lime up!
The minimal water flow gets so Overheated, that it turns to steam! The steam knocks and pushes the heater around, then the Minerals will precipitate out of the water and forcefully attach to the inside walls of the heat exchanger! Which will then drastically reduce the inner diameter of the exchanger making a much smaller passageway for water to travel thru! This is a major problem to remain this way. It will then need to be dismantled and de-limed to increase the holes once more, and allow a proper water flow.

May 30, 2015 | Hayward 100,000 BTU Pool Heater H100ID1 -...

1 Answer


is this heater is been install for above the ground pool it will be better either way to use a hard schedulle 40 pvc to prevent any checking in the hoses for future leak ,is the heater connections are correct in and out , mean from the return the filter go to inlet side the heater them the outlet side of the heter (HOT WATER) GO TO RETURNS of the pool ? also check if the pump got full prime not air,is the filter is clean? also check for any brocken parts inside the flowvalve control, after years low PH AND TA will destroy internal parts in heater include leaking heater exchangers.

Jun 09, 2013 | Hayward 100,000 BTU Pool Heater H100ID1 -...

1 Answer

I have a Hayward HD100ID natural gas heater that I purchased last year. It's been working great up until yesterday. Today, when I plug it in and turn thermostat to max, nothing happens. I don't...

Since this heater was only purchased last year, if it is faulty they should cover it under warrantee. If you call Hayward technical support they should be able to help you figure out what the next step is. I hope this helps.

Jul 23, 2011 | Hayward 100,000 BTU Pool Heater H100ID1 -...

2 Answers

I have a H100ID1 natural gas heater. For the past 2 weeks it has been heating the water but making a loud banging noise and shaking the whole heater. It stopped making the noise and won't heat the water....

Is it leaking? Has anything shaken loose inside? If you can get it to light the cause and fix for the banging and shaking is here:
Takes about 30 minute and you are done, but you have to figure out what else has gone wrong to stop it lighting

Jul 01, 2010 | Hayward 100,000 BTU Pool Heater H100ID1 -...

2 Answers

I have A hayward heater H100IDEVERYTIME the heater kicks on it makes A clunking noise and the inlet hose shakes

Check your water flow and make sure your by-passes are set to send water threw the heater. That is to say shut off. The water in the heater is over heating and the clunking is the water turning to steam.

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My nephew has a Hayward H100ID1 pool heaterThe problem is

I changed the ignition module. It has been working fine since.

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