TECHNICAL GUIDE
STN Steam Generators
www.sawo.com | [email protected]
25
Temperature sensor 1 not
connected.
Temperature sensor 1
short circuit.
Temperature sensor 2 not
connected.
Temperature sensor 2
short circuit.
Temperature fuse defect.
Water level too high and
operation not permitted.
Water level too low and
operation not permitted.
Illogical combination of
water level measurements.
Fill failure.
Drain failure.
Communication failure.
Temperature is greater
than the maximum
temperature.
No master steam
generator connected.
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
Check the wire between the sensor and the control unit.
If there is no problem with the wires and they are correctly
installed, check the sensor.
If no problem can be found, contact the retailer.
Check the wire between the fuse and the control unit. Fuse
has probably overheated. The reason for it needs to be
discovered before using the steam generator again. A new
fuse is needed.
If no problem can be found, contact the retailer.
Check that the drain valve is not blocked. Clean the level
probes.
If no problem can be found, contact the retailer.
Check that water supply is open and there is enough
pressure. Check solenoid valve. Clean level probes.
If no problem can be found, contact the retailer.
Clean level probes. If no problem can be found, contact
the retailer.
Check that water supply is open and there is enough
pressure. Check solenoid valve. Clean level probes.
If no problem can be found, contact the retailer.
Check that the drain valve is connected and not blocked.
Clean the level probes.
If no problem can be found, contact the retailer.
Check the RJ12 cable. If the area where cable is located
has many other cables, it can cause EMC problems.
If no problem can be found, contact the retailer.
Contact qualified electrician or maintenance personnel
before using the steam generator again.
Dip switch setting is incorrect. Check dip switch settings.
Check RJ12 for loose contact. Replace RJ12.
If no problem can be found, contact the retailer.
Code
Problem
Solution
Troubleshooting
If an error occurs, the steam generator will be switched off. There will be a warning beep to alarm the user every 2 seconds.
The code for the error will be displayed blinking in the control panel, see the table below.
Please note, only a qualified electrician or maintenance personnel are allowed to make the service operations and repairs!
If an error occurs in one of the slave units, error message is followed by slave number. For example: E1 -> S2 -> E1 ->S2...
Pressing ON/OFF button disables the slave and rest of the generators can operate normally.
Possible errors are: