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17.0 Fault Finding
55
© Baxi Heating UK Ltd 2011
FAN LOCKOUT
Rectify wiring.
NO
YES
Unplug
3-way PCB connector
& unplug fan. Is there
continuity from N to O &
from P to Q ?
NO
Unplug
the smaller of the
6-way PCB connector. Is there
continuity from R to S & from T
to U & from
V to W ?
Replace fan.
Rectify wiring.
YES
N
P
R
V
T
Q
O
U
Viewed from
Wire Entry end
S
W
Fan
Connection
PCB
Connection
Fan
Connection
PCB
Connection
NOTE: The fan is supplied with 325 Vdc.
Fan Fault Finding should only be carried out after the
boiler has been electrically isolated.
Lights
On on on
*
*