The EOL code means End Of Line. It means the heater has given up trying to run. There are a number of problems that could cause this issue. There could be no gas pressure, a defective gas valve, or something wrong with the control board, etc. To determine exactly what is wrong a person qualified to diagnose the problem will need to follow a diagnostics document from Paypak or call Paypak's technical support line. If you have a volt/ohm meter and have some debugging experience you might convince a tech support person to help you diagnose what the problem is. If you are not successful with that idea then you will need to find a pool equipment professional to do the job. I hope this helps.
The only way possible to see if the touch pads are working is to test the voltage of the control pads when it contacts. The input of the Microprocessor should be checked for the pad control impulse to come in. If there is no trigger voltage to the mP this can be the control pad problem.Some dirt can accumulate and cause the tracks to short resulting in this display. Try to use heater to warm off any moisture.
The mP must be checked for the working voltage and also the frequency oscillation at the crystal leads. If so the mP is working with a suspected control pads which are not able to set the program or timing.
There is no way but to remove the sticker pad and replace, One difficult way to have a chance is to remove the carbon sticker pads and check continuity , You can use a carbon pen to line the tracks so that the multi-meter reads a continuity. With this you can have a temporary fix
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