Hayward H250FDN heater IF code (and remedy)

KT_

New member
Jun 12, 2021
4
Toronto
Pool Size
21000
Surface
Vinyl
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-15)
We had a (pretty much) all-Hayward system installed several years ago. (This will be the fifth summer.) We've had issues with a number of components in that time, requiring repair/replacement.

Recently we've been having an issue with our heater, a Hayward H250FDN. It will occasionally try to start, fire for a second or so, then turn off again. After failing a couple times in a row it will go to an IF error until that times out. Sometimes, however, it fires up fine. But some of those times it fires up fine, it will then shut off at some undetermined point, maybe ten or fifteen minutes later, then fire back up again on the next cycle (the target temperature not yet having been reached).

We did have a larger gas meter installed previously to make sure that we're able to deliver the required gas for our pool heater plus the furnace, gas fireplace(s), gas stove, etc. (none of which are running when the pool heater acts up).

We've had a service call where he checked for spiders and investigated the basic operation (although at the time, of course, the heater was working so he couldn't observe it failing to light up).

He did notice some corrosion around the heater exchanger/pipes, and suggested that could be the cause our intermittent IF code. He recommended we either replace the heat changer or just replace the whole heater because of the high (%-wise) cost of doing just the heat exchanger.

Before I go ahead and pull the trigger on replacing a 4-year-old heater, is there anything else that comes to mind?

Also, we've been given quotes for a H250FDN replacement as well as a Jandy JXI 260 with Versaflo. The pricing is similar. The Hayward has a standard three-year warranty, but the Jandy has a one-year heater/five-year heat exchanger warranty. Are there any issue with connecting the Jandy to an Omnilogic board? The longer warranty on the Jandy heat exchanger sounds nice, but I'm nervous about a one-year (only) warranty on the rest given our experience with pool equipment so far.
 
Slight corrosion around the heat exchanger pipes with no water leaking from the heat exchanger would not cause an IF code nor be a reason to replace the heat exchanger on a 4 yr. old heater. Sounds like he is just pushing for an unneeded sale. Your heater may just need to be cleaned and checked by a "qualified" technician as my hayward heater can be a bit picky about firing up if not cleaned regularly.
 
We had a (pretty much) all-Hayward system installed several years ago. (This will be the fifth summer.) We've had issues with a number of components in that time, requiring repair/replacement.

Recently we've been having an issue with our heater, a Hayward H250FDN. It will occasionally try to start, fire for a second or so, then turn off again. After failing a couple times in a row it will go to an IF error until that times out. Sometimes, however, it fires up fine. But some of those times it fires up fine, it will then shut off at some undetermined point, maybe ten or fifteen minutes later, then fire back up again on the next cycle (the target temperature not yet having been reached).

We did have a larger gas meter installed previously to make sure that we're able to deliver the required gas for our pool heater plus the furnace, gas fireplace(s), gas stove, etc. (none of which are running when the pool heater acts up).

We've had a service call where he checked for spiders and investigated the basic operation (although at the time, of course, the heater was working so he couldn't observe it failing to light up).

He did notice some corrosion around the heater exchanger/pipes, and suggested that could be the cause our intermittent IF code. He recommended we either replace the heat changer or just replace the whole heater because of the high (%-wise) cost of doing just the heat exchanger.

Before I go ahead and pull the trigger on replacing a 4-year-old heater, is there anything else that comes to mind?

Also, we've been given quotes for a H250FDN replacement as well as a Jandy JXI 260 with Versaflo. The pricing is similar. The Hayward has a standard three-year warranty, but the Jandy has a one-year heater/five-year heat exchanger warranty. Are there any issue with connecting the Jandy to an Omnilogic board? The longer warranty on the Jandy heat exchanger sounds nice, but I'm nervous about a one-year (only) warranty on the rest given our experience with pool equipment so far.
Has anyone thought to clean the flame-sense rod? It will look like this. All that will be seen is the white wire and the 3-screws that hold the flange in place. It can be cleaned with a very light abrasive cleaner (not sandpaper) or a newer dollar bill (yes, really). Your automation will control any brand heater if you go that route.
1718641082404.png
 
Thank you both of you. I did (previously at least) have faith in this company/technician. After he had given it a look and checked for spiders, etc., I went ahead and double-checked the manifold and orifices. It seemed to be working, but the next morning it failed to stay lit and went into IF. (It had rained heavily; could water permeation from the outside ever be an issue?)

Then as suggested I also pulled out the flame-sense rod (which was dirty and caked) and carefully cleaned it. I then started it up and...it failed. The first time, anyway; then it tried to light again and that time it held, and since then (a day and a half) it has seemingly been working. Fingers-crossed, knock on wood, etc.

I'll have to see how long it holds up, or maybe then getting in a different service person for a second opinion before replacing the whole thing.
 
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