Slant/Fin VGH-299-CH, Installation And Service Manual

Page: 89 / 128

E93.1601EN032.C VGH installation manual 89
Lock
out
code Error Description Cause Solving
33 LWCO_1_
ERROR Low water cut off 1 error There is no water in
the heat exchanger
or not electrically
connected Check if there is enough
water in the heat exchanger
if not so fill up the system
34 LWCO_2_
ERROR Low water cut off 2 error There is no water in
the heat exchanger
or not electrically
connected Check if there is enough
water in the heat exchanger
if not so fill up the system
35 APS_NOT_CLO
SED_IN_POST_
PURGE
Air pressure switch not
closing during post-purge
1 no air transport to
the burner after
heat demand; flue
or air inlet is
blocked or APS is
jammed or air
signal hose not
connected to the air
intake pipe or water
in hose Check if there are any
obstructions in the flue or air
intake, replace APS if
jammed, connect air hose to
the air intake pipe, remove
any water from the hose.
36 GAS_PRESSUR
E_ERROR Gas pressure switch open
for more than
E2_GPS_Timeout wrong gas pressure
on gas supply Check if gas pressure is in
limits of the gas pressure
switch.
Table 14. 1