I just installed an Intermnatic Multipurpose Control (IMC) model P1353ME, which has the Fire Switch Relay for cool down before shutting off the pump. After looking at the schematic for the Jandy LRZ Heater, I used the wire going from the ignition control to the flame sensor as my Fire Switch controller (it is labeled IGN/FS), I clipped this wire and routed it through the Fire Switch Relay on the IMC. This does work - the heater shuts down for cooldown - but it gives me an Ignition Fault error on the heater. The fault only appears if the heater was shut off by opening the IGN/FS wire. If the heater was not running, then I have no errors.
Is this normal, or the correct way to use a Fire Switch? Or have I tapped into the wrong wire to control the heater shut down?
Any help would be appreciated.