Buderus Logamax plus GB142-24 Servicing Instructions page 94

8 Actions
 Test the supply cord of the hot surface ignitor to make sure that
there is no short circuit in it and that it is not broken (fig. 23,
fig. 22 and fig. 110 on page 126).
 Fit the plug to the hot surface ignitor.
 Re-assemble the UBA 3 in reverse order of disassembly.
 Switch on the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "1" (On).
 Fit the casing.
8.1.14 Replacing the hot surface ignitor
 Switch off the power supply of the heating system on the circuit
breaker.
 Set the main switch on the BC10 to "0" (Off).
 Remove the casing.
 Disconnect the plug and socket connection of the cable of the
hot surface ignitor.
 Loosen the fastening screws (fig. 24, pos. 1).
 Remove the earth cable (fig. 24, pos. 2).
 Remove the mounting plate (fig. 24, pos. 3).
 Remove the hot surface ignitor (fig. 24, pos. 4).
 Install the new hot surface ignitor with a new gasket and attach
the mounting plate with fastening screws (see fig. 24, pos. 1).
 Restore the plug and socket connection of the hot surface
ignitor.
 Fit the casing.
94 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
fig. 22 UBA 3 installation base
fig. 23 Testing the supply cord of the hot surface ignitor
fig. 24 Replacing the hot surface ignitor