Our pool was installed around 2007 and still has the original Hayward H400 heater. We had the original Jandy board recently replaced with the Zodiac iAqualink. The iAqualink system is great, and the heater does a good job at heating water, but the issue is the communication and/or relay between the two. The iAqualink temperature controls and on/off switch don't do anything at all. Regardless of whether the "heater" button on the iAqualink is on or off, the heater just stays on. This is an issue because the control panel on the heater is totally spent from years of sun exposure, so just to turn it on or off I have to mash the buttons for 15-30 minutes.
A few months ago, I had the technician who installed the iAqualink come back out, thinking he did something wrong, but to my surprise the relay worked exactly as intended. The heater toggled on and off with the push of the "Heater" button on the iAqualink, confirming that he wired the relay correctly. It stayed that way for a few months, but now the issue is back. I have no idea what the problem is or how to fix it. Does anyone have any thoughts? Could it be the control panel on the heater itself? Thanks, any help is appreciated.
A few months ago, I had the technician who installed the iAqualink come back out, thinking he did something wrong, but to my surprise the relay worked exactly as intended. The heater toggled on and off with the push of the "Heater" button on the iAqualink, confirming that he wired the relay correctly. It stayed that way for a few months, but now the issue is back. I have no idea what the problem is or how to fix it. Does anyone have any thoughts? Could it be the control panel on the heater itself? Thanks, any help is appreciated.