Carel gaSteam UG045 05 Serie Manual De Servicio página 42

ENG
Code Alarm
ALW06 Warning: Low
production
ALA14 Secondary unit
offl ine
ALA15 Main unit offl ine Main unit offl ine
ALA16 Frost protection
force pre-heat-
ing
ALA17 Frost protection
secondary unit
force preheating
ALP21 SV offl ine
ALW07 Secondary auto-
test warning
ALW09 Warning
Autotest can-
celled
ALW10 Warning
secondary level
sensor
ALW11 Warning
secondary unit
low production
22
Cause
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
Secondary unit offl ine
Frost protection Temperature below
10°C, preheating activated to protect
the humidifi er
Frost protection on Secondary unit.
Temperature below 10°C, preheating
activated to protect the humidifi er
Supervisor offl ine
Autotest warning on Secondary unit.
Probable problems with: Feedwater,
level control, fi ll solenoid valve
Note: check the alarm log for any
warnings relating to the events
that generated the alarm (autotest
warning, level sensor warning, low
production warning)
Autotest stopped manually
Level sensor warning on Secondary
unit.
The level sensor may not be working
correctly
Low production warning on Second-
ary 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
Possible solution
• 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
check the temperature inside and outside of the
humidifi er. Increase the temperature inside the
humidifi er by fi tting heaters where necessary
check the temperature inside and outside of the
humidifi er. Increase the temperature inside the
humidifi er by fi tting additional heaters where
necessary.
• Make sure that the unit receives water
• Switch the unit off and clean the level control
and the fi ll valve
• Switch the unit off and clean the boiler, the
level sensor and the fi ll solenoid valve
• Check correct water supply to the boiler;
• 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
Reset Action
Signal
only
Signal
only
Signal
only
Signal
only
Signal
only
Tab. 4.a
gaSteam +0300123ML rel. 1.0 - 03.12.2021