Hey guys long time reader, but just getting frustrated trying to find the right steps/diagnostics for my issue.
I have an 11year old Hayward (H400FDN) heater, 2 years ago I replaced all the boards. The heater has worked like a champ since. This past week we were using the heater quit and started throwing the IF code.
The heater worked fine at first, and warmed the pool to the correct temp, however the IF code started while it was maintaining the temp of the pool, I'm not sure if it's relevant or not, however it was raining on and off while we were using the heater.
What I've tested so far -- The ignitor is getting glowing red, the fan is kicking on and off properly, the gas tubes don't appear to be clogged (cleared them with a pick)
I think the issue is related to the power signal to the gas valve. The gas valve makes a hollow sound like it's operating, but I don't smell gas. In testing the gas valve, I see 19 Vac being sent to the valve briefly, like a second or less then kicks back to very low to no voltage.
What should I be looking at next? The Power control board again? The transformer? How do I test these to narrow down the solution?
Thank you,
Chris
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EDIT and FINAL UPDATE:
The voltage was actually 24 volts, my multi meter was giving me bad readings (it's now been replaced with a fluke) the issue was actually the gas valve failed.
Thank you all for your help!
________________________________________________________________________________________________________________________________________
I have an 11year old Hayward (H400FDN) heater, 2 years ago I replaced all the boards. The heater has worked like a champ since. This past week we were using the heater quit and started throwing the IF code.
The heater worked fine at first, and warmed the pool to the correct temp, however the IF code started while it was maintaining the temp of the pool, I'm not sure if it's relevant or not, however it was raining on and off while we were using the heater.
What I've tested so far -- The ignitor is getting glowing red, the fan is kicking on and off properly, the gas tubes don't appear to be clogged (cleared them with a pick)
I think the issue is related to the power signal to the gas valve. The gas valve makes a hollow sound like it's operating, but I don't smell gas. In testing the gas valve, I see 19 Vac being sent to the valve briefly, like a second or less then kicks back to very low to no voltage.
What should I be looking at next? The Power control board again? The transformer? How do I test these to narrow down the solution?
Thank you,
Chris
________________________________________________________________________________________________________________________________________
EDIT and FINAL UPDATE:
The voltage was actually 24 volts, my multi meter was giving me bad readings (it's now been replaced with a fluke) the issue was actually the gas valve failed.
Thank you all for your help!
________________________________________________________________________________________________________________________________________
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