Blower Testing & Replacement - Bradford White RG1PV40SN19 Service Manual

PV Series
Blower Testing
Step 1.
Step 2.
With power in the
Y
"ON" position does
blower energize
within 2 minutes?
N
Pressure tap
Does blower
Y
energize after 2
minutes, run for 30
seconds and shut
down?
N
Remove the head screws
(1/4" driver) as shown in
Y
photo 9. Then disconnect the
cord shown in photo 10, Is
there 115VAC across the
terminal shown in photo 11?
N
N
Is there 115VAC at
wall outlet?
Y
Check power
Y
cord for damage
N
22
Replace blower
22
Position gas control
power switch to "ON"
position and adjust control
to call for heat.
Remove the three screws
(T20 Torx driver) from
control access cover on blower assembly and
remove cover (see photo 7).
Disconnect pressure switch
tubing from blower.
(see photo 8)
8
Pressure switch tubing
See pressure
switch testing
page 20
10
Is there 115VAC
Y
across terminals
shown in photo 12?
Determine power
source problem and
correct.
Repair or replace
power cord
WARNING
115-volt potential exposure. Use
caution to avoid personal injury.
Connect manometer to
pressure tap of blower
(see photo 8)
9
Blower Mounting Screws
Determine voltage
problem and correct
11
Reconnect cord shown in
photo 10, is there 115VAC
between blue harness wire
and green harness wire
(see photo 13)
N
Does cord have
N
electrical
Replace cord
continuity?
Y
Replace gas control
22
7
Disconnect vent system from
top of blower (see photo 10)
With blower running,
and exhaust adapter
Y
removed from top of
blower, is there a
negative pressure of -
2.15: to -3.15" W.C?
N
N Y
Is there 115VAC across
blue and green wires
(see photo 13)
12
Y
Replace blower
13
Blower OK
Replace
blower