I have a Sta-Rite Max-E 333 333 BUT heater and it is hooked up to a timer. When the timer comes on the heater comes on and I can't change the temperature or shut it off It also come on as Spa on rather than Pool and i can't change that either. What do I need to do to fix it. Thanks.

SOURCE: pool heater

If the heater fails to ignite after three attempts, the heater will automatically go into Lock Out. This is a safety feature on the heater.

Things for you to look at to see what is causing the problem are the display panel and diagnostic lights. When you turn on the heater, is it reading the correct water temp? If not, the Thermister has gone bad and will need to be replaced. When you try to start the heater, is there an Error Code displayed? Which of the Service Lights are coming on when the heater will not light? If it is the Serivce System, that is usually low flow of water. You may have a dirty filter, skimmer or pump basket full of debris, or a valve not completely open.

If the Service System light is the one coming on, then you will need to take off the top two halves of the heater and turn over the Display Panel. There are diagnostic lights on the back side of the panel. There may be a red light next to any of the following:

AGS, AFS, SFS, HLS, PS or THERMISTOR

If there is a red light next to one of these, then that is what has malfunctioned. If you need an Owner's Manual for the heater, you can find one online at the following link:

http://www.inyopools.com/owners_manual/sta-rite_heaters_max-e-therm.pdf

SOURCE: Temperature reads 125 degrees.

I am not sure if you have solved this issue, or not, but just in case. The problem is the Thermister, or temp sensor. That will need to be replaced since it is reading the water temp at 125.

The Thermister is located on the manifold, left hand side, between the first two bolts. It is pretty easy to change out and this will correct the problem.

SOURCE: Sta Rite Sr333na Max E Therm Pool & Spa Heater gauge stuck?

Anytime the heater is reading the water temp to be above what it actually is, especially 126, the problem is the Thermistor, or Temp Sensor, for the heater. This is a very easy part to replace. The Thermistor is located on the manifold, on the left side, between the top two bolts.

Sorry this is a late response! Hope that it helps!

SOURCE: sta rite 400na gives error code 05 after about 30 seconds

I am not sure if you have received an answer to the issue, or not, but just in case! An EO5 error code is an open stack flue sensor, or switch, There are two forms of the stack flue sensor, so you will need to know which one you have on the heater.

What this error code means is that the sensor "read" the flue temp to be over 500 degrees. Usually, it is just gone bad and reading the wrong temp.

SOURCE: sta-rite lp heater wont start

Its the top. There is a membrane that controls the circuit board....the button pad is bad

Testimonial: "Thanks, I agree. After checking power supply all the way through to control board, placing a jumper from pins 9/8 and 9/7 on J6 I get lights on LED's"