Grant Spira Series - Air Pressure Error Diagnosis

93
12.9 Air Pressure Error
Primary fault
Secondary follow on checks
AIR PRESSURE ERROR
Reset error
by pressing the
‘RESET’ button
on burner control
panel
No
No No Yes No No
Restart the
boiler does the
fault occur during
the lighting
sequence?
Is the burner fan
operational?
Is the fan
blocked?
Is air
pressure switch
operational?
Is the burner
fan pressure
correct?
Check plug
connections
between the
burner fan and
control PCB
Remove any
blockage or replace
fan if necessary
Check operation
of pressure
switch
Is fan air pressure
tube OK?
Replace burner
fan.
Is burner
fan pressure
now correct?
Yes Yes
Note 1 Note 2 Note 3 Note 4 Note 5
No Yes
Replace
control PCB
No
Yes
H2o 60˚C
SET 75˚C
AIR PRESS