Question about Sta Rite SR400NA Max E Therm Pool Spa Heater Dual Electronic Ignition LoNox 400000 BTU Natural Gas ASME
Check fusible link and gas pressure it overheated if gas ok check burner tubes for deris
Posted on Oct 11, 2017
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Posted on Jan 02, 2017
SOURCE: sta-rite gas heater won't ignite
I am not sure if either of these issues have been solved, but with the AGS light on, you will need to check the flow of water first. If it is below what is needed for the heater, this will light up. If the water flow is fine, then check the water temp on the display panel. If it is readin higher than that of the ACTUAL pool water temp, you need to replace the Thermister.
If the water temp displayed is about that of the pool water, then the Automatic Gas Shutoff will be the next thing to check and replace.
You can tell IF a Sta-Rite heater has been converted by the model number. The Convesion Kit is supposed to come with a sticker stating that the heater has been converted, but there are two options for the kit and the one without the sticker is cheaper.
If you take off the top two halves of the heater, on the Junction Box there should be a Tri-fold card there. Unfold it, if the model number ends with NA it is a Natural Gas Heater, LP would be Propane.
Posted on Jul 10, 2009
Between the two water pipes on the left side of the manifold is a two inch plug. When you take this plug out the thermal regulator assembly will come with it.It consists of "O" rings, a spring and what looks like a thermostat in a car. This is the probal bad part although it could be the spring also. You can get these parts seperatly or in a kit. If this is an older heater the kit is the way to go so you get all the nessary "O" rings and you will be covered on everything you need.
Posted on Dec 08, 2009
Thank you for posting your question here on Fixya.com.
Overall heater life is often dictated more by the pool maintenance history and chemical usage than location. Generally speaking up here in the Midwest you can expect 12 - 15 years of service life from a heater. More if it gets pampered with such treatment as proper winter covering and regular cleaning and maintenance. Far less if chemical issues arise in a pool and are not dealt with properly. A heater can fail in a matter of weeks if water conditions are that poor.
So, to answer your question; with proper installation, maintenance and water treatment I’d put it at 15 – 18 years before the heater will have spent itself from wear.
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Posted on Mar 23, 2010
Your temp sensor has gone bad and will need to be replaced. It's a small tube that slides into the water manifold and you can follow the wires back to the board. Just unplug and set a new one in place.
Posted on May 13, 2010
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