Operating instructions

Gas restrictor allocation
Rated output kW 13 26
Gas restrictor, int ernal 7
Gas
&
Natural gas E mm 4.8 5.95
&
Natural gas LL mm 5.3 6.73
&
LPG P mm — 4.4
Function sequence and possible faults
Display screen Measures
Control unit is-
sues heat de-
mand
No
Increase set
value and ensure
heat is draw n off
Yes
Fan starts
No
after approx. 51 s
fault F5/F9
Check fan cables
and plugs
Yes
Differential pres -
sure sensor en-
ables start
(0.75 V ac ross
terminals "X8.5
"and "X8.6")
No
after approx. 51 s
fault E6/F5
Check fan cables
and plugs, ch eck
fan
Yes
Ignition
No
Fault F4 Check igni tion
module (control
voltage 230 V
across plug s
"X2.1" and
"X2.2")
Further details regarding the individual steps (cont.)
12
Initial start-up, inspection, maintenance
5692 619 GB