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6 Troubleshooting
6.1 Type plate
Before informing the fitter of a fault, make a note of the following
information:
Type of gas used
Boiler type
Manufacturing date
Year (01 = 2001, 02 = 2002, ...)
Week
Serial no. of the appliance
This information can be found on the rating plate stuck to the
front plate of the boiler.
6.2 Error messages
6.2.1
B3 control panel
Message
AL 50
Boiler sensor
AL 52
Domestic hot water sensor
AL td
Titanium anode
AL tc
09/03/2016 - 300011506-02
Faults
Probable causes
The sensor circuit has been broken or
short circuited.
The sensor is cut
The titanium anode is in open circuit or
the tank is empty.
A short circuit has occurred on the
titanium anode or connection
reversed.
The installation is stopped.
Advise the installer.
The installation continues to operate but domestic hot
water heating is no longer covered.
Advise the installer.
Production of domestic hot water is stopped. This may be
reactivated for 24 hours by disconnecting and
reconnecting the power supply to the boiler.
Advise the installer.
DTG 230
6. Troubleshooting
XX-XX
Action
11
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