55
Response SE Combi -
Installation
88 FAULT FINDING - continued
*
FAULT FINDING
If a fault condition develops, the first digit and the last 2 digits of the
display flash alternately the following codes, according to the fault.
internal failure - electronic
Code
Fault
Code
Fault
0
False flame
00
1
Short circuit 24V
01
2
No flame detection
03
*
4
Controller
04
Non-volatile lockout
4
05
*
4
06
*
4
4
07
*
4
10
*
4
11
*
4
13
*
4
14
*
4
15
*
4
16
*
4
17
*
4
24
Flow and return sensors
NTC
1
and
NTC
2
reversed
4
26
Minimum gas pressure
4
30
Maximum difference between
T
1
and
T
2
exceeded
4
31
NTC
1
short circuit
4
32
NTC
2
short circuit
4
36
NTC
1
open
4
37
NTC
2
open
4
41
*
4
42
*
4
60
*
5
Air flow
28
Fan not running / no tacho signal
5
29
Fan keeps turning / no tacho signal
9
12
Water pressure switch or flue thermostat
failure
9
Maximum temperature
18
Flow temperature T
1
too high
9
19
Return temperature T
2
too high
9
25
Flow temperature T
1
increase too fast
F
AUL
T FINDING