Download Baxi 80 HE Technical data

Lights
On Off On
IGNITION LOCKOUT
15.0
Fault Finding
ON
I
NO
Is there gas at gas valve inlet
?
Check isolation valve and
gas supply.
J
5-way Connector
YES
Remove
5-way connector
from gas valve. Is there 240
Vdc between I & J
during ignition ?
NO
Reset Lockout.
Is there gas flow
(check at meter) ?
YES
Replace Gas Valve.
NO
YES
Is
there at least
18mbar dynamic at gas valve
inlet ?
NO
Remove
the larger or the
two 6-way PCB connectors.
Is there continuity from I to L
& from J to K ?
Remove Gas Valve & check
inlet filter for blockage.
Otherwise incorrect gas supply
to boiler.
NO
YES
Replace PCB.
YES
Is
Condensate Trap
blocked or water on
terminals ?
YES
Clear blockage and dry
sensors.
K
L
NO
Is
spark or flame detection
probe damaged ?
6-way Connector
YES
Replace spark or flame
detection probe and
gaskets.
NO
Is
spark gap between 3 and
4mm ?
NO
Set spark gap to 3.5mm.
YES
Is
wiring from PCB
to spark probe & flame
detection probe OK ?
NO
Rectify wiring.
46
© Baxi Heating UK Ltd 2006
YES
Is the
burner blocked or
damaged ?
YES
Clean burner or replace as
necessary.
NO
Replace PCB.
Lead from PCB to Gas
Valve faulty.