Carel HeaterSteam 4 UR002, Руководство пользователя

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“heaterSteam” +0300087EN - rel. rel. 1.4 - 22.01.2021
13. ALARM TABLE
The following table shows the alarms that can be displayed by the controller, with the corresponding description, causes and possible solutions.
Code Alarm Cause Possible solution Reset Alarm relay Action
ALC01 Autotest failed
alarm
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)
Make sure that the unit receives water
Switch the unit off and clean the level control and
the fi ll valve Restart required Closed Total
shutdown
ALC02 High conductivity
warning
High water conductivity warning Check feedwater conductivity
If necessary, feature a suitable water treatment
system
The problem cannot be solved by softening the
feedwater Manually reset the
warning Open Signal only
ALW03 High conductivity
alarm
High feedwater conductivity alarm Switch the unit off and clean the electrodes that
measure the water conductivity
If the problem persists, change the origin of the
feedwater or feature a suitable treatment system
(demineralisation, even partial)
The problem cannot be solved by softening the
feedwater Restart
required Closed
ALC03 Level sensor
malfunction alarm
The level sensor may not be working
correctly Switch the unit off and clean the cylinder, the level
sensor and the fi ll solenoid valve
Check correct water supply to the cylinder Restart required Closed Total
shutdown
ALC04 High heater
temperature
The PTC probes in the heaters have
measured an excess temperature
Klixon activated Manually reset the Klixon
The problem depends on operation without water or
excessive scale on the surface of the heaters
Switch the unit off and, when it has cooled down,
clean the cylinder, the heaters and the level control,
making sure the components are intact
Check that the electrical and water connections are
in order and that the unit is powered correctly
It may be necessary to replace the PTC sensors Stop - restart
required Closed Total
shutdown
ALB01 No water alarm No feedwater Check that the supply pipe to the humidifi er and the
internal tubing are not blocked or choked and that
there is enough pressure (0.1-0.8 MPa, 1-8 bars)
Check operation of the fi ll solenoid valve
Check that there is not excessive back-pressure in
the steam outlet, preventing water from entering the
cylinder due to gravity
Check that the steam outlet pipe is not choked or
that there are no pockets of condensate
Check that the level sensor is working correctly, clean
if necessary Manual/ Auto-
matic Closed Stop
production
ALB02 Low production
alarm
Input power not available; with the unit
on, there is no steam production or
water preheating;
Float blocked in high level position. With the unit off and disconnected from the mains
power supply, check that there are no defective or
faulty electrical connections
Check electrical continuity of the heaters
Clean the level sensor Manual Closed Stop
production
ALA01 Main probe broken
or disconnected
alarm
Main room probe not connected or
damaged Check probe connection and the type of control
selected Manual Closed Stop
production
ALA02 Limit probe broken
or disconnected
alarm
Limit probe or second probe not con-
nected or damaged Check probe connection and the type of control
selected the type of control choice Manual Closed Stop
production
ALA03 Pre-heating probe
broken or discon-
nected alarm
NTC water temperature probe not
connected or damaged Check preheating operation and the settings of the
parameters on screen eb02; Automatic Closed Stop
production
ALH01 High humidity/
temperature
warning
High humidity in the room (high tempera-
ture with temperature control) Check operation of the probe and the limits set on
screen c01 Automatic Open Signal only
ALH02 Low humidity
warning
Low humidity in the room Check operation of the probe and the limits set on
screen c01 Automatic Open Signal only
ALH03 High limit humidity
warning
High humidity at outlet Check the operation of the outlet limit probe Automatic Open Signal only
ALW01 Foam warning Entrainment of foam in the cylinder
during boiling The entrainment of foam is generally due to the pre-
sence of surfactants in the water (lubricants, solvents,
detergents, water treatment or softening agents) or
an excessive concentration of dissolved salts.
Purge the feedwater lines
Clean the cylinder Automatic Open Signal only