172-65627M-09 (SQ10) 18 Oct 2021
35
Troubleshooting
In case of an abnormality, install a safety fence or restrict access to the
room with a sign stating “Authorized personnel only.” etc. to prevent
personnel unauthorized for the unit (including those who have not
received the relevant safety education) touching the components. When
doing so, stop the supply or steam, electrical power, water and air.
Failure to prevent the access of unauthorized personnel may result in burns,
electric shock, injury, or falls.
If the unit fails to operate properly, use the following table to locate the cause and
remedy.
If it is not possible to resolve the problem even after carrying out the remedy below,
contact TLV.
Problem
Cause
Diagnosis
Remedy
The display
does not light
up
Power is not
supplied.
Check the power supply
indicator.
Supply power to the
control panel at the
specified voltage of 100V
AC or 200 V AC.
Operation
does not
start after
touching the
START
button
5 seconds have
not passed after
starting operation.
Wait for 5 seconds.
The water
supply system
valve is closed.
The flow rate is
below the
required amount.
Operation check of the
flow sensor:
Check the water flow on
the touch panel
Open the valve.
Increase the water
amount.
5 seconds have
not passed after
AL1 triggered.
Check the high
temperature alarm on the
touch panel.
Wait until AL1 is resolved.
Investigate the cause for
AL1 to be triggered.
Temperature
sensor is broken.
Check that the outlet
temperature on the touch
panel is displayed as "0".
Replace with a new
temperature sensor.
Air is not
supplied to the
control valve.
Check the pressure of
the regulator.
Supply the required air
pressure.
The sequencer
is faulty.
An error message
appears on the touch
panel.
Replace the internal
sequencer.
Temperature
does not
rise as
prescribed
Steam supply
pressure is
reduced or
insufficient
steam amount.
Check the settings for the
pressure reducing valve
(not included with the unit).
Set to the maximum
steam pressure possible
to be supplied below 0.4
MPaG.
Check the steam main
valve.
Open the main valve.
Check for clogging in
piping.
Remove the clog.
Check the pressure loss
of the piping.
Make sure a steam supply
pressure of 0.4 MPaG is
obtainable up until the
unit.
Air supply
pressure to the
control valve is
low.
Check the air supply
pressure to the control
valve.
Supply the required air
pressure.
CAUTION
