sfs

Found a SFS (Stack Flue Sensor) error on my control board. Being an electrician I checked the resistance (Fluke 1187) on the sensor with an outside air temp of 70 degrees F and found 2.8 kOhms. Through this forum I found out 2.8 kOhms didn't seem right as someone previously posted it should be...

Hello All, I know there are many threads re this issue but here goes... I have a Mastertemp 400 natural gas heater that was winterized in perfect working order at the end of last pool season. Attempts to start it up this year has resulted in the heater starting as usual and shutting down...

Hi all, I've read a copious amount of threads about the E05 error however thought to ask one last time before spending the $300 for the control board. I get the SFS light and the "push ON" reading just stays at 80 then comes the E05. This is after the heater ignites and seems to run just fine -...