38 LT5052 (ISS 5)
SECTION TWELVE Wiring Diagram (maintenance instructions)
B - Blue
Br - Brown
Bk - Black
G/Y - Green/Yellow
Or - Orange
R - Red
Y - Yellow
SECTION THIRTEEN Fault Finding Instructions (maintenance instructions)
Note: The correct operation of the
pressure switch is dependant on the
venturi and its tubes being clean and
clear of any debris or obstructions.
Prior to carrying out the following
tests clean the venturi with a pipe
cleaner or similar article and recheck
appliance operation.
It is advisable that the following
test be carried out in the
sequence listed to ensure a
logical elimination of faults.
The following checks can be carried out on the Fan Control Unit once the cover has been removed.
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