Zeta SmartConnect fault codes

Battery internal resistance too high

The panel has measured the battery internal resistance and determined it is too high. The batteries will need to be replaced.

Standby batteries missing or disconnected

Check the battery fuse, check that battery connections are secure, check battery voltage (should be around 26-27V for well-charged batteries), check that the two batteries are connected in series, and check the charger fuse.

Power supply is not charging the batteries

The panel has determined that the power supply is not charging the batteries. This is likely to be a problem with the Charger PCB — contact the supplier to arrange a replacement.

Negative-side earth fault

Something is shorting to earth on the negative side. Located using the same method as an Earth Positive Fault, but looking for shorts to loop negative rather than positive.

Positive-side earth fault

Something is shorting to earth on the positive side (usually through a cable screen). Most earth faults occur on the addressable loop — disconnect all loop connections and reset the panel; if no earth fault is reported the fault is on the loop, and can be located by splitting the loop in half and sub-dividing the bad section. Note that connecting other mains-powered equipment (e.g. a laptop) to the panel can itself give an earth fault.

Open circuit on a panel local input

Check the local input has an end-of-line resistor fitted, check it is the correct value (4.7 kΩ), and check for cable breaks or loose connections.

Short circuit on a panel local input

Check for cable short circuits on the circuit, check the end-of-line resistor is the correct value (4.7 kΩ), and check there are no normally-closed switches connected to the circuit.

Open circuit on a panel local output (sounder circuit)

Check the local output (sounder circuit) has an end-of-line resistor fitted, check it is the correct value (4.7 kΩ), and check for cable breaks or loose connections.

Short circuit on a panel local output (sounder circuit)

Check for cable short circuits on the circuit, check the end-of-line resistor is the correct value (4.7 kΩ), and check there are no non-polarised devices connected to the circuit.

Loss of mains power to the panel

Check if mains power is present, and check for 29.5V DC at the PSU cage output.

Abnormal microprocessor running condition

A system fault is an abnormal microprocessor running condition caused by various unexpected phenomena. The panel attempts to correct itself; while the fault is present the System Fault LED, General Fault LED, General Fault relay and internal fault buzzer are constantly active. Clear via the system fault reset button underneath the PCB. If the fault does not clear, consult the distributor.