~2013 Hayward H400FDN with Hayward/Prologic system.
Turned on the hot tub tonight, but when I got in I noticed it was running but wasn't heating at all. Went to pad to check the equipment... I have a full Hayward system, so everything is automated. Valves were switched, speed was right, but heater hadn't ignited. The display has "h0" on it, which I think may be "b0", which AFAIK just means its being remotely controlled.
I took a closer look at the heater but there was no apparent problem; the toggle was on standby, the service light wasn't on, no smell of gas, and I don't see any error codes anywhere. It just wouldn't turn on. I went over and manually turned the heater on and off (it's set to automatically come on with the spa) but no joy. Toggled the system spa/pool setting hoping that would reinitialize things, but no joy. When the heater "comes on" it makes a faint clicking noise about three times and then nothing.
In the past I've had a starting problem when visitors manually turn the heater off, but like I said it's on standby and settings looks fine.
Figured someone here might have an idea what the problem might be. I do a lot of my own maintenance, but I've never dug into the heater itself (though I have repaired my furnace, which seems similar). What could cause the heater to just not turn on but not throw an error code anywhere?
Thanks,
Rt
Turned on the hot tub tonight, but when I got in I noticed it was running but wasn't heating at all. Went to pad to check the equipment... I have a full Hayward system, so everything is automated. Valves were switched, speed was right, but heater hadn't ignited. The display has "h0" on it, which I think may be "b0", which AFAIK just means its being remotely controlled.
I took a closer look at the heater but there was no apparent problem; the toggle was on standby, the service light wasn't on, no smell of gas, and I don't see any error codes anywhere. It just wouldn't turn on. I went over and manually turned the heater on and off (it's set to automatically come on with the spa) but no joy. Toggled the system spa/pool setting hoping that would reinitialize things, but no joy. When the heater "comes on" it makes a faint clicking noise about three times and then nothing.
In the past I've had a starting problem when visitors manually turn the heater off, but like I said it's on standby and settings looks fine.
Figured someone here might have an idea what the problem might be. I do a lot of my own maintenance, but I've never dug into the heater itself (though I have repaired my furnace, which seems similar). What could cause the heater to just not turn on but not throw an error code anywhere?
Thanks,
Rt
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