Troubleshooting - Wolf TGB-40 Installation Instructions Manual

Troubleshooting
If afault occurs,the BIASoperating,information and displaysystemdisplaysafauIt code,to which causeand
remedyfrom the following table maybeallocated.Thistable isdesignedto allowyour local heatingcontractor
to trace the fault more easily.
E
= press the reset button after a fau It has been removed
E
STB
- High-limit
safety
cut-out
The flow temperaturehas exceeded 110 °C.
The maintenance valves were closed during maintenance,
no fault.
No flow through the heat exchanger due to
- an inadequately vented system
-
a faulty overflow valve
-
a faulty pump + a faulty flow switch
- a blocked water pipe + a faulty flow switch
The control unit records an incorrect flow temperature due to
- a faulty flow sensor
5 E
Flame failure during operation
Flamefailure within 15 s after
the flame has beensuccessfully recognised.
Lack of gas because
- the gas supply pressure is too low.
The gas mixture is difficult to ignite because
- the CO,value is outside the permissible range
- flue gas is getting into the combustion air supply - flue pipe is not gas-tight
- the gas restrictors or their gasket not OK, if required for this boiler
-
of wind influence, the wind protection is missing
Faulty components must be replaced with original spare parts.