Fault Finding - Vent-Axia HR205 User, Installation & Servicing Instructions

Before starting FAULT FINDING
carry out preliminary electrical systems checks
i.e. Earth Continuity, Polarity, Short Circuit
and Resistance to Earth.
START
Ensure the Cooker
Hood is closed.
YES
Is there
mains voltage
across terminals
A1/A2?
NO
Ensure continuity
between terminals
D5 & A1
and between
D6 & A2.
Check mains
supply.
WARNING
If the Overheat sensor or Fan
thermal trip has operated,
check the entire system and
unit for correct installation.
Check all ducting outside &
terminals for blockages.
IMPORTANT
When investigating
overheating allow the unit to
run long enough for any fault
to become apparent.
Note 1
Electricity supply must be
isolated and Fan Motor
temperature must be less than
100˚ to allow thermal trip to
reset.
Note 2
Electricity supply must be
isolated and Overheat
temperature must be less
than 80˚ to allow Overheat
Thermostat to reset.
30
Ensure all external controls are operating
and are set to normal running. Ensure that
a mains electrical supply is available to the
unit.
Is the YES
voltage across
fuse on the
terminals B1 &
controller
B2 between 80v
O.K.
NO
NO
Disconnect wires
Investigate cause
from terminals
and
F1, F2 & F3.
rectify fault
Ensure voltage
selector wire is
correctly engaged.
Replace fuse
3.15AT
Is the voltage
across F1 & B2
between 80v
NO
Replace controller
cooker hood
Fan
Plug
3
G
2
1

11.0 Fault Finding

HR205 - Main Unit Fault Finding Chart
Is the
YES
& 160v?
Check external
control wiring.
YES
Refer to 205 wiring
diagram (section 7)
Reconnect wires
& 160v?
to terminals
F1, F2 & F3.
Disconnect 4 pin
cooker hood plug.
Is the
voltage across
YES
the blue & white
Replace
wires on the cooker hood
plug between
80v and
160v.
NO
Rectify fault on
cooker hood
plug and lead.
C.Hood Connector
Plug Block
1
2
3
E D
4
5
6
Refer to diagrams below to
identify terminals on components
(e.g. A1, D3 etc).
Are both fans
operating?
NO
See Fan Fault
Finding Chart
Controller
Voltage Selector Wire
1
O
F
B 2
160
C 3
140
120
C
100
80
1 L
A
Fuse
2 N
L 1 (3.15AT)
B
N
2
YES