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165 Gas spa heater ignition lockout when raining
Hi! I’ve got a Pentair MiniMax 100 natural gas spa heater. It’s new to me, but approximately 12 years old. After a lot of cleaning, I’ve got it wired up and functional, but I’m running into a very strange issue. In normal weather it works ok, but when it’s raining out (that’s my theory anyway), the heater won’t stay lit. The electric ignitor sparks, the gas ignites, but then the ignitor isn’t sensing that the flame actually lit. At that point (I think it’s 4 seconds total), the heater shuts of the gas supply and the flame goes out. However, this problem seems to only occur when it’s wet or raining out. Any ideas? A lose wire somewhere? A bad ground?
Here’s the manual that includes a wiring diagram. This is the direct spark ignition model:
Pentair MiniMax Manual for Model 100 Pool Heaters
Here’s a video of what happens:
Update:
I tested the current at on the flame sensor, and it’s peaking at .3 microamps. So I’m pretty sure the flame sensor is the issue I need to track down here. I’m thinking it could be a ground-related issue since this seems to work ok in dry weather but not in wet weather.
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4 Комментариев
Update: I'm still trying to get this reliable. It continues to work the first or second try in lower humidity, but takes many tries and is difficult to get doing in high humidity.
из Luke Soules
@luke have you tried replacing the flame sensor? If it is that old it could have formed a layer of contaminants on it that prevent it from properly sensing the flame. You may not even be able to see the layer on it but it could be enough to disrupt it. They're very sensitive.
из brandon k
Hola amigo, espero estes bien, tengo el ,mismo problema, quisiera saber si llegaste a arreglar el problema y como, gracias
из Fabrizio Gonzales
Tengo un calentador igual nuevo, no se como instalar la parte electrica. Alguien me ayuda? Gracias
из irwin C S