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SHT Heiztechnik,
aus Salzburg
Operating instructions
M21/HB M27/GB
Page 46
SHT Heiztechnik aus Salzburg GmbH, A-5020 Salzburg-Bergheim, Rechtes Salzachufer 40 Tel. 0662-450444-0, Fax-DW 9
Our current general terms and conditions apply.Errors, printing faults and technical changes reserved
ERROR 42
"STL interrupted! (plugged off?)"
This ERROR report displays a technical defect at STL boiler only qualified personal can fix!
Displayed if either the safety temperature limiter "STL" is disconnected from boiler electronics or the
STL is defective.
WHAT TO DO?
Delete the message (see point 8). If boiler is hot, let it cool down and push the STL button as far in as
possible (see operating manual). The boiler cannot continue operation with defective STL probe;
contact qualified person.
ERROR 43
currently not available!
ERROR 44
currently not available!
ERROR 45
"Roomdev.1 probe DISTURBED!"
This ERROR report displays a technical failure of the installation only qualified personal can fix!
Displayed if the Roomdev 1 probe signal is either far over or under the normal range (larger than
+130°C or smaller than -30°C).
Error might be caused by e.g. a wrong room device, or a failure of the room device.
WHAT TO DO?
Delete the message (see point 8). Heating circuit can continue operation because the system runs with
a default value of 15°C if probe is defective. Contact qualified person as soon as possible.
ERROR 46
"Roomdev.1 switch DISTURBED!"
This ERROR report displays a technical failure of the installation only qualified personal can fix!
Displayed if the "remote control" signal (operational mode – switch or temperature dial) at heating
circuit 1 lies either far over or far under the normal range (larger than 4900 ohm or smaller than 20
ohm).
Error can be caused by e.g. a wrong connection, or because a wrong room device has been mounted.
But it can also be caused by a room device failure.
WHAT TO DO?
Delete the message (see point 8). Heating circuit can continue operation because the system ignores
the room device operational mode switch and temperature dial if "switch" is defective. Contact
qualified person as soon as possible.
ERROR 47
"Roomdev.2 probe DISTURBED!"
This ERROR report displays a technical failure of the installation only qualified personal can fix!
Displayed if the Roomdev 2 probe signal is either far over or under the normal range (larger than
+130°C or smaller than -30°C).
Error might be caused by e.g. a wrong room device, or a failure of the room device.
WHAT TO DO?
Delete the message (see point 8). Heating circuit can continue operation because the system runs with
a default value of 15°C if probe is defective. Contact qualified person as soon as possible.
ERROR 46
"Roomdev.2 switch DISTURBED!"
This ERROR report displays a technical failure of the installation only qualified personal can fix!
Displayed if the "remote control" signal (operational mode – switch or termperaturedial) at heating
circuit 2 lies either far over or far under the normal range (larger than 4900 ohm or smaller than 20
ohm).
Error can be caused by e.g. a wrong connection, or because a wrong room device has been mounted.
But it can also be caused by a room device failure.
WHAT TO DO?
Delete the message (see point 8). Heating circuit can continue operation because the system ignores
the room device operational mode switch and temperature dial if "switch" is defective. Contact
qualified person as soon as possible.
ERROR 49
currently not available!