Grant Spira Series - Pellet Tube Thermostat

Fault Finding
65
12.5 Pellet Tube Thermostat
Primary Fault
Secondary follow on checks
BLANK DISPLAY SCREEN
When pellet
tube has cooled -
does pressing
RESET button
on stat correct
the fault?
Yes
No No No No No No No
Is the pellet
delivery hose
damaged?
Is the pellet
delivery hose
air tight at both
ends?
Is the ash pan
overflowing?
Is there a build
up of ash on the
combustion
chamber baffle?
Is the
combustion
chamber
draught
correct?
Is the condensate
trap and/or
discharge pipe
blocked or
frozen?
Is the flue used
the correct type?
Is it correctly
installed & not
blocked?
Is the flue fan
(in flue fan box)
operational &
clean?
Is the room
ventilation
adequate?
Is the mains water
supply to boiler
connected &
switched on?
Is the boiler wash
system operating
correctly when
tested (using the
test switch)?
Is the shaker
cleaning system
operating correctly
when tested (using
the test switch)?
Is the boiler
cleaning interval
correctly set?
Is the duration
of the boiler
cleaning period
correctly set?
Replace pellet
delivery hose
Correctly fit
pellet delivery
hose or replace
if necessary
Clean out the ash
pan & boiler.
Clean all ash from
the combustion
chamber baffle
Check the
switched live
supply to hopper/
boiler and rectify
as necessary
Clean condensate
trap & pipe to
clear blockage
Rectify or replace
flue if necessary.
Remove any flue
blockage
PELLET TUBE STAT TRIPPED
No Yes
No
No
Note 1 Note 3Note 3 Note 4 Note 5 Note 6 Note 7 Note 8
No No No Yes
Yes Yes Yes Yes Yes
Is the lead correctly
connected?
Is there continiuty
between the
terminals?
Replace pellet
tube stat
No
Note 2
Check that
manifold jets are
clear & correctly
set?
Yes
No No No No No No
Unblock or
increase
ventilation as
required
Connect the
mains water
supply &
switch on
Is solenoid
valve operating
correctly?
Check operation
of cleaning motor
& shaker
mechanism
In burner menu
reset ‘TIME
CLEAN BRAZIER’
& ‘TIME CLEAN
BOILER’ settings
In burner menu
reset ‘TIME CLEAN
PERIOD’ setting
Note 9 Note 10 Note 10 Note 6 Note 11 Note 11
Rectify fan fault
or replace if
necessary.
Clean fan if
required