Heating And Hot Water - Bosch Worcester Greenstar Danesmoor 12/18 Installation, Commissioning And Servicing Instruction Manual
Floor standing oil-fired condensing boiler conventional flue & room sealed flue
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Check and
correct
programmer/timer
settings.
Reset
the thermostat
and
investigate
cause of ovetheat.
If
1he
thermostat
will
not
......t
replace
tile
tllermosl>tt.
Lack
of
system
water
circulation.
Chedcthe pump, valvt!S
and
system. Rectify
the fault.
Replace
high
limit
tl>ermostat.
Is
the boiler hot7
No
Yu
No
Is
the programmer/timer
ON
for hutlnglhot
water?
v ..
. .
Is
the flue
or
boiler
oveme.t
1hermostat
trippedout7
No
No
Start
No
heating/hot
water
No----~
No
Is
the
demand
light
llumlnated?
Check
external controls
and
wiring.
Rectify
fault.
v ..
Is
tile
burner lockout
light Illuminated?
No
Repair fault/replace lead.
v ..
Yes
No
v ..
MEASURE
ALL
WJV
TESTS
BETWEEN
NEUTRAL
(N)AND
THE
PIN,
WIRE OR
TERMINAL
SPECIFIED.
Follow
the control
bac
fault finding
chart
to
locate fault.
Lack
of system water
drculatlon.
Check
the
pump, valws and
system.
Rectify
the fault.
Replace
the control
thermo.stat.
Replace
the
burner
control
box.
UNDER NO CIRCUMSTANCES
MUST
AN APPLIANCE
BE LEFT
OPERAllNG
Willi ANY
CONTROL
LINKED
OUT OR
OVERRIDDEN.
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