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I was troubleshooting my Mastertemp 300 and changing all the usual sensors and the control board. I checked the thermal limiter and found the thermostat and the spring were gone. I’m thinking the spring must have rusted and the thermostat must be in the manifold. My question is, how far can that...

What’s up guys? I have a master temp 300 that’s around 10 ½ years old and it giving me some problems. At first it was starting and then would cycle off with an AGS l.e.d light. So I changed the cheap stuff that I haven’t changed in years, high flow, glue and the mister and I’m waiting for the...

My 10 year old Master temp 300 will go thru its start up, I smell gas, it will start and the exhaust is warm then it stops and try’s to start two more times. I pulled the tap off and found what looks to be the U11 LED light on. I already changed the AGS, high limit and flue sensors. I bypassed...

I have control panel, part #73357. The heater would not work, so I pulled the panel out and found one of the relays was burned out. I tried to replace trh one of the relays that had burned out, but when I soldered the new one and put everything back together, it sparked when i turned the power...

Anyone try replacing your DE filter drain plug with a valve? I want to do this so I can use a sock to catch all the DE and to hook up a hose to drain the filter so I can clean the grids. When I just drain the tank now it just makes a big mess with the DE and water going everywhere. Please let me...

I have a 15 year old 18x36, 36000gl pool. Last year I noticed one of 4 returns was not putting out any water. This year I have 2 of the 4 not working. They are off the same line as they are right arcross from each other. The pressure seems to be high also, its at 25psi and will slowly creep up...