Having driven a thousand miles through that espresso wasteland last summer, I just may darken your door.
While you are waiting for the part, TREBLE check all the wiring and that all the PXR3 settings are at factory.
If you have a VOM, check both A/C & DC voltages across the DISCONNECTED A1 & A2 terminals with the L1 & T1 connected and the power on. There should be no reading. If there is a high A/C reading, the output of the Fuji could be toast.
To check the output of the Fuji, AFTER the params are reset to the factory, connect a DC voltmeter across PID pins 4&5. DO NOT CONNECT THE PID TO THE SSR. The voltage should be ~12vdc until the boiler get close to the SV, when it should start to pulse on and off, then completely off [< 0.5vdc]when the boiler passes the SV. If this does not occur, the PID could be toast as well.
Good luck!