What do common FENWALNET 6000 trouble codes such as Ground Fault, Open Circuit, and Device Failure indicate?

Common trouble codes on the FENWALNET 6000 indicate specific wiring or hardware issues. Ground Faults signify a low impedance path between a field conductor and earth ground, with a normal offset voltage of 6.6 Vdc (Page 1) [1].

Open Circuits indicate a break in field wiring or a missing 10k Ohm end-of-line resistor on SLC, Release (AR), or NAC (SG) circuits (Page 6, 170) [1].

Device Failures range from communication losses ("Addr Trouble Open") to internal hardware issues like DC-to-DC converter failures ("Addr Line Volt Fault") or software errors ("Addr RAM Fault") (Page 175, 177) [1].