60
STV2I ed 11/09
VICTRIX 2 I Export
Technical Documentation
Technical Documentation
C
CENTRAL HEATING MODE:
230 VAC are present to the clamps 1-2 of connector X5 on the
P.C.B.
DOMESTIC HOT WATER MODE:
230 VAC are present to the clamps 1-3 of connector X5 on the
P.C.B.
No
Replace the P.C.B.
Yes
The wiring between the 3-way motor and the board is OK.
No
Restore the electric connection/replace the wiring.
Yes
The 3-way cartridge functions regularly
(it is not blocked).
No
Release/replace the 3-way cartridge.
Yes
Replace 3-way valve motor.
D
The gas valve is calibrated correctly.
No
Adjust the CO
2
values to Minimum and Maximum
(see air gas adjustment
paragraph).
Yes
The NTC flow probe is OK (10 kΩ at 25°C).
In DHW functioning mode, also check the DHW NTC probe.
No
Replace NTC probe.
Yes
Replace the P.C.B.
E
The operations stated below are indispensable for checking the quality of the relay electric contacts positioned on the board.
Replace the fuses checking that there are no short circuited components (
pump, fan, gas valve, etc...
).
Check safety device times and the complete power removal from the gas valve, operating as follows:
- close the gas supply and make a functioning request;
- check that, after 2 ignition attempts, the display shows error "01";
- with the help of the single wire wiring diagram, use a tester to check that there is no voltage (230 VAC) on the gas valve power supply cables.
F
The withdrawal (flow rate) of the DHW is at least 1.5 l/min.
No
On the DHW system, check the correct opening of any cocks, cleanliness
of the pipes, filters, flow rate limiters etc.
Yes
The flow switch functions correctly.
No
Check/clean/replace the flow switch.
Yes
The wiring between the flow switch and the board is OK.
No
Restore the electric connection/replace the wiring.
Yes
Replace the P.C.B.
Summary of Contents for VICTRIX 26 2 I
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