Question about Hayward 100kbtu Pool Or Spa Propane Gas Heater H100idp1

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I have a Hayward H100i, 100,000but spa heater. I recently had to replace the blower. Now the unit seems to get so hot that is shuts off every few minutes and stays off until it cools.

Removing the top cover seems to somewhat improve the situation and premiot longer run times.

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Unfortunately you have damage the heat ex-changer with low p.h. either is block with green suit or the baffles are been damages and all the hot air goes fast look for bend pipes inside the heater will see the damge?

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

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1 Answer

I have Hayward H400IDL2 heater I recently had #1 and #2 1.5 amp fuses blow. I replaced them and then the #4 2.5 amp blew so I replaced it. When I press the mode button to spa the heater blower comes


Good Day, missed your post for a few days. #1 & #2 fuses are on the high voltage side. This could mean a problem with incoming voltage or a bad fuse or main circuit board. Call our tech line at 908 355-7996. I have attached a link to the manual. http://www.hayward-pool.com/pdf/manuals/H-seriesLowNOx-H250IDL2-H350IDL2-H400IDL2.pdf

Aug 24, 2014 | Hayward H400idl2 400,000 Btu Low Nox...

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I have Hayward H400IDL2 heater 6 years old. I recently had #1 and #2 1.5 amp fuses blow. I replaced them and then the #4 2.5 amp blew so I replaced it. When I press the mode button to spa the heater


Hi, this is John the Hayward tech. If you are now seeing the #4 fuse go that is on the low voltage side. I would guess the main circuit board. I left a manual on your other post.

Aug 24, 2014 | Hayward Pool & Spa

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I had code AO displayed on my hayward H250IDE. I


Check your wiring again on all the safety devices - Water pressure switch and both Hi- limits in the header.

Feb 19, 2010 | Hayward H Series Pool & Spa Heater 400k...

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Hayward Heater Problem ''AO'' error. H400IDH


Thank you for posting your question here on Fixya.com.

It sounds as if the air activated switch the tube you mention attaches to is not working. Pull the two wires from it and connect them to simulate the switch closing. Start up the heater to see if you get ignition. If so, replace the switch.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Feb 14, 2010 | Hayward H Series Pool & Spa Heater 400k...

1 Answer

The power supply on my hayward h100i pool heater is definitely on, but the unit seems totally dead: no fan, nothing. was working fine as i turned it off yesterday.


Verify the pressure switch and thermostat are both closed while the pump is on. Be sure the front panel is on the heater. Access the parts with the top removed. If they are you will likely need to replace the control board, part number IDXMOD1930. If not, replace whichever part is open.

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1 Answer

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I would have to agree with you concerning the control module.

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