29
Code
Description
Example 5250 r/m
,
Fan speed
52
hundreds
>
Fan speed
50
units14
Table 11
Fan speed mode service level
6.9 Failure mode (
x00
)
To check the latest failure with the accompanying operating codes and relevant tem-
peratures.
Using the ‘
m
’ -key, press repeatedly until
1
(flashing digit) appears in the ‘
code’
-dis-
play.
Then select the required
code
2
,
3
or
4
etc. using the ‘
s
’-key and read off the
relevant value.
Code
t
Description
1
37
Display of failure code
(see Par. 10.2)
2
03
Operating mode during failure
3
53
Flow temperature during failure
4
40
Return temperature during failure
5
60
DHW temperature during failure
6
3&
n/a
Table 12
Failure mode on service level
Example as above:
Failure code
37
indicates the return temperature sensor failed during HTG operation
(
03
), at a flow temperature of 53°C, a return temperature of 40°C and DHW tem-
perature of 60°C.
