We now have Two Girard water heaters... A Gen-1 and a Gen-2. Our Gen-1 we purchased used from another member of JOF and we now use it to heat our Pool.
The Sail Switch (on the exhaust port) that detects the fan is running - IS a VERY fussy switch. Not that it does not turn on / off, but the tension it requires to open / close.
We find that the sail switch will engage the burner correctly, and then when the exhaust air is much warmer - it is not able to keep the sail switch engaged. Banging the heater will solve the issue for a little while, but it could be in the sensitivity of the switch as air density changes with temperature.
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Steve & Stacy with Jasper (Australian Cattle dog)
2015 Seneca 36FK
Custom 27' flatbed trailer hauling:
07 Toyota FJC & Yamaha Kodiak 400 ATV
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