35
STV50 ed 09/08
VICTRIX 50 Rev. 002
Code
Description
Remedy
b 18
System flow temperature higher than 92°C
Check the circulation of water in the
system
b 19
System return temperature higher than 87 °C
Check the circulation of water in the
system
b 24
Flow and return probes inverted
Check probes position
b 25
System flow temperature increases too quickly
Check the circulation of water in the
system
b 26
No water
Check the correct pressure of the water
inside the system
Bring the water pressure in the system to
value between 1 and 1.2 bar
Check for leakage in the circuit
b 28
Fan failure
(no Hall signal)
Check the fan
Check "F3" fuse
Check circuit board
b 29
Fan failure
Check the fan
Check "F3" fuse
Check circuit board
b 30
Difference between system flow and return temperature higher
than 40 °C
Check the circulation of water in the
system
b 33
Domestic hot water probe failure
(short circuited)
Check / replace DHW probe
b 38
Domestic hot water probe failure
(open)
Check / replace DHW probe
b 65
Waiting for the fan to start
(insufficient air flow)
Check fan function
b 118
Loss of ionising current during burner ignition
(after 3 attempts,
fault becomes error "02" ignition inhibition)
Check gas and electricity supplies
Check gas supply pressure
Indications and malfunctions with electrical rearming.
The board features a display that shows malfunctions or shu-
tdowns by means of error codes.
The error codes preceded by the letter “b” are temporary shut-
downs
(volatile)
so, if the conditions that caused the shutdown
stop, the boiler rearms itself automatically and starts working
normally again.
19
System return temperature too high
(over 87 °C)
Check the circulation of water in the
System
25
System flow temperature increase too rapid
Check water flow in system
Check primary heat exchanger
30
Difference between flow and return temperatures too high
Check water flow in system
31
System flow probe failure
(short circuited)
Change the system flow probe
32
System return probe failure
(short circuited)
Change the system return probe
36
System flow probe failure
(open)
Change the system flow probe
37
System return probe failure
(open)
Change the system return probe
114
Invalid cascade address
Check address set on board
(See cascade
and zone adjuster helper board)
Technical Documentation
Technical Documentation
