Ntc Flow Probe Anomaly; Reset Selector Switch Fault; Storage Tank Probe Anomaly - Immergas Victrix Zeus 26 1 I Manual

Technical Documentation
The pump functions correctly.
N.B.: make sure that the pump functions at maximum speed.
Any CH system zone valve or cut-off cocks are open.
The NTC flow probe is OK (10 kΩ at 25°C).
02
The safety thermostat functions regularly (intervention temperature
b
higher than 100°C).
There are no combustion products in the air intake pipe.
N.B.: check the absence of CO
intake pipe.
Check/clean/replace the main heat exchanger (condensation module).
N.B.: it is recommended to check the correct pressure of the inlet gas and check any obstructions of the gas piping upstream from the boiler. Error 02 intervenes
also if the board detects a loss of the flame signal 6 times in 8.5 minutes.
ERROR 05
The wiring between the flow probe and the board (connector X11 ter-
minals 3-4) is OK.
Replace the NTC flow probe. If the anomaly persists, replace the P.C.B.
ERROR 08
The main selector is blocked on Reset.
Replace the P.C.B.
ERROR 10
The boiler manometer displays a pressure exceeding 0.8 bar.
The wiring between the system pressure switch (connector X8 terminals
1-2) is OK.
Check/replace the system pressure switch. If the anomaly persists, replace the P.C.B.
ERROR 12
The wiring between the DHW probe and the board (connector X8
terminals 5-6) is OK.
Replace DHW NTC probe. If the anomaly persists, replace the P.C.B.
STVZ1I ed 10/09
Yes
Yes
Yes
Yes
or other combustion products in the
2
Yes
Yes
Yes
Yes
Yes
Yes
No See section B
Restore circulation in the CH system by acting on the closed devices
and also check:
- the correct functioning of the boiler by-pass;
No
- the opening times of any zone valves;
- the correct functioning of any thermostatic valves.
Replace NTC probe.
No
Replace the over-heating safety thermostat.
No
Check the correct positioning of the terminals, of all joints and
gaskets, to prevent the recirculation of the combustion products inside
No
the pipes.
N.B.: Error 02 could be preceded by the disply of error 38.

NTC flow probe anomaly

No Restore the electric connection/replace the wiring.

Reset selector switch fault

No Check that there is no interference between the knob and P.C.B.
Insufficient system pressure
Restore the correct pressure by acting on the system filling valve.
N.B.: in this case it is always advisable to ensure that there are no leaks
No
in the central heating plant and check the correct factory-set value of the
expansion vessel.
Restore the electric connection/replace the wiring.
No
Storage tank NTC probe anomaly
The boiler prevents functioning in DHW mode but can function in CH mode
No Restore the electric connection/replace the wiring.
41
Technical Documentation
VICTRIX Zeus 1 I