Questions & Answers for: Raypak what does sensing mean

...is working, and your heater is igniting, the ILO code is telling us that the flame sensor is not sensing that it is lit. This is when it shuts down and gives the ILO code. If you lost your manual ...

...can i do this myself at home to get it to heat the hot tub again. PRS means that the heater is not sensing pressure in the plumbing. Make sure that the pump basket is clean. Make sure pump is

ffl on board This means false flam sensed. As in the controller thinks there is a flame even though the gas valves are closed. I would suspect bad igniter/flame sense. If you have the manual, it tells

...flame sensor on the assy and the wire is dual purpose, sending the voltage to ignite fuel, and then sensing the burning flame and sending that reading to system, confirming that its ok to open main ...