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Thread: Sta-Rite SR400na - Now what? No codes, brief ignition

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    Join Date
    Jun 2014
    Queen Creek/AZ

    Sta-Rite SR400na - Now what? No codes, brief ignition

    I have a 20yr old Sta-Rite SR400NA heater that had last worked about 15 years ago. I won't go into why its been so long...long story with electrical power availability. At any rate, the heater has been in place (plumbing/gas) it's entire life (manufactured in 1997 and presumable installed shortly there after). Once I resolved the power issue and attempted to fire it up, I had to replace the control board, the control panel and the stack flue sensor to get to this point. So now when I turn the heater on and adjust the temp to 95, the air blower comes on and I hear the flame kick on for just a second. During the brief flame up, the service heater light just flashes on and the AFS diag light also flashes, but just for that brief second. This cycle continues over and over. There are no permanent error codes nor any diagnostic lights stuck on. Any ideas on where to go next to get this heater in service?
    Thanks all.
    25K gallon in ground pool with attached heated spa (~600 gallons). Separately plumbed dual Caretaker 99 5 port valves and waterfall feature.
    3 X 1.5 HP MaxEglass II, (one for main filter(4.9 sq ft sand), one for Caretaker/waterfall, and one for Spa).
    Currently using Goldline Salt Chlorine Generater (T-Cell 15).

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    In the Industry

    ps0303's Avatar
    Join Date
    Jul 2011

    Re: Sta-Rite SR400na - Now what? No codes, brief ignition

    Could be the blower motor is weak. Could have water in the tank because of a leaking heat exchanger. When a unit sits idle for long periods of time, they are usually to the point that they should be replaced.

    First check for water in the can, Remove the last bolt on the manifold and see if water comes out. It there is water in it, scrap the unit and get a new one. If no water then the blower is possibly too weak to run correctly thus you need a new one. Not cheap.
    Gastek Pool & Gas Services If you would like to provide a review of the help I provided, please use the following link to leave a review. Gastek Google review,
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