Rheem Spa Heater Giving Clock/Fireman switch error

[rimmi2002]

Hi I have Rheem spa heater for my pool/spa combo. It no longer heats the water. It gives the error of "Clock/Fireman Sw" which according to the manual means "Fireman or Remote switch connected to Safety Loop is in the OFF Mode"

Can someone please guide me on how to fix this? Thanks.

 

[Richard320]

Do you have an intermatic timer? The fireman switch will be alongside the dial. Could be a bad switch, or it got knocked out of alignment or a wire came off. What it does is cut off the heater a few minutes before the filter shuts down to allow things to cool off before the water flow stops.

 

[rimmi2002]

Do you have an intermatic timer? The fireman switch will be alongside the dial. Could be a bad switch, or it got knocked out of alignment or a wire came off. What it does is cut off the heater a few minutes before the filter shuts down to allow things to cool off before the water flow stops.

Thanks. Yeah I have Intermatic Intelli system. I opened up the board and found where the wires from the heater insert into the main board's firearm switch location. The check the whole wire and no nicks on the wire that are visible. I don't know how to open the heater to see where the wire attaches in the heater. There is no off/on button for this switch on the intermatic control. Atleast not one that I can find. Should I disconnect the wires and see what happens?

 

[Richard320]

Thanks. Yeah I have Intermatic Intelli system. I opened up the board and found where the wires from the heater insert into the main board's firearm switch location. The check the whole wire and no nicks on the wire that are visible. I don't know how to open the heater to see where the wire attaches in the heater. There is no off/on button for this switch on the intermatic control. At least not one that I can find. Should I disconnect the wires and see what happens?

I don't know. I'd have to look at a schematic and study the manual to see how that all gets configured.