Carel gaSteam-UG, User Manual, Page: 111 / 128

111
ENG
alarm table
g0300122EN rel. 1.0 - 01.12.2021
P/N Alarm Cause Possible solution Reset Action
ALA15 Main unit offl ine Main unit offl ine -
ALA16 Frost protection
force pre-
heating Frost protection Temperature below
10°C, preheating activated to protect
the humidifi er • check the temperature inside and outside of the hu-
midifi er. Increase the temperature inside the humidi-
fi er by fi tting heaters where necessary
ALA17 Frost protection
Secondary unit
force preheating Frost protection on Secondary unit.
Temperature below 10°C, preheating
activated to protect the humidifi er • check the temperature inside and outside of the hu-
midifi er. Increase the temperature inside the humidi-
fi er by fi tting additional heaters where necessary.
ALP21 SV offl ine Supervisor offl ine
ALW07 Warning
Autotest
Secondary Autotest warning on Secondary unit.
Probable problems with: Feedwater,
level control, fi ll solenoid valve
Notice:
check the alarm log for
any warnings relating to the
events that generated the alarm
(autotest warning, level sensor
warning, low production warning)
• Make sure that the unit receives water
• Switch the unit off and clean the level control and
the fi ll valve
Signal
only
ALW09 Warning
Autotest
cancelled Autotest stopped manually Signal
only
ALW10 Level
sensor
warning
on Secondary Level sensor warning on Secondary
unit.
The level sensor may not be working
correctly • Switch the unit off and clean the boiler, the level sen-
sor and the fi ll solenoid valve
• Check correct water supply to the boiler;
Signal
only
ALW11 Low production
warning
on Secondary Low production warning on Secondary
unit.
Input power not available;
With the unit on, there is no steam
production or water preheating;
fl ue gas outlet or air intake blocked;
gas shut-off valve closed, burner and/
or controller malfunction • check the gas pressure and that the gas shut-off
valve is open;
• make sure that the air intake is not blocked;
• check the fan power connection;
• check operation of the brushless fan, the fl ue gas
outlet and air intake;
• burner fl ame malfunction;
• check the connections between the fl ame control
board and the burner, and between the electrical
panel and the fl ame control;
• check the connections between the unit controller
and the intermediate terminal block in the electrical
panel
Signal
only
Tab. 16.a