Recent content by mikeboyle

I fully agree that they would be better off replacing the entire unit, but it is not my choice to make. The unit is 7 years old and doesn't appear to be in that bad of shape for the amount of hours it has on it. I will give the owners the information and pricing to repair vs. replace. I'm pretty...

My unit does not have the notched plug on the manifold. The unit looks like this:https://www.a1poolparts.com/pentair-mastertemp-high-performance-low-nox-pool-heater-asme-green-friendly.html?gclid=EAIaIQobChMI2tr76POb2wIVFtlkCh0eqwHtEAYYBCABEgIwxvD_BwE I don't know if it is an HD or not. The...

I've read all the previous threads that come up on the Master Temp heaters and none seem to match the exact issue I'm having with my MT400. It will ignite and run for 25-30 seconds, then the service heater light comes on. Some times it will set the AGS LED sometimes the HLS LED. If I jump both...

Anyone know what the life expectancy of the sensors should be?

Not sure if this should go here or under hot tubs/spa. I maintain a 800gal hot tub for a members only gym that typically runs 16-18 hours a day. The sanitizer and Ph levels are maintained with a Polaris Watermatic C660. The ORP sensor is around 6 months old and the Ph sensor is pushing a year...

Figured I'd update this with what I found incase someone else has a similar issue. The problem turned out to be the temperature sensor. When operating the digital readout would always sit at 102*F (set for 103*). I noticed the heater was cycling on and off more frequently than normal so I...

A little more info if it helps to point me in the right direction. I reset the heater on Sunday night when I serviced the hot tub and it has run without shutting down since. Watching the control panel when the heater kicks on the yellow heat led will flash for a few seconds and then turn solid...

I have a MT 250 running the heat on the hot tub in the gym I work for and I keep getting a random E01 code and the heater shuts down. I have been able to determine that E01 is referring to a temp sensor error, but can not find any information on how to actually diagnose the problem. The heater...