Vanguard Heating VN6B - Manual (Page 21)

21
100845
TROUBLE-
SHOOTING
POSSIBLE
CAUSE
1. Ignitor electrode posi-
tioned wrong
2. Ignitor electrode broken
3. Ignitor electrode not
connected to ignitor
cable
4. Ignitor cable pinched or
wet
5. Piezo ignitor nut is loose
6. Broken ignitor cable
7. Bad piezo ignitor
1. Gas supply turned off or
manual shutoff valve
closed
2. Control knob not in
PILOT position
3. Control knob not pressed
in while in PILOT
position
4. Air in gas lines when
installed
5. ODS/pilot is clogged
6. Gas regulator setting is
not correct
REMEDY
1. Replace ignitor
2. Replace ignitor
3. Reconnect ignitor cable
4. Free ignitor cable if
pinched by any metal or
tubing. Keep ignitor
cable dry
5. Tighten nut holding
piezo ignitor to heater
cabinet. Nut is located
inside heater cabinet at
top.
6. Replace ignitor cable
7. Replace control valve
(piezo is part of control
valve)
1. Turn on gas supply or
open manual shutoff
valve
2. Turn control knob to
PILOT position
3. Press in control knob
while in PILOT position
4. Continue holding down
control knob. Repeat
igniting operation until
air is removed
5. Clean ODS/pilot (see
Cleaning and Mainte-
nance, page 20) or
replace ODS/pilot
assembly
6. Replace gas regulator
OBSERVED
PROBLEM
When ignitor button
is pressed and control
knob is pressed in
and turned to the
PILOT position,
there is no spark at
ODS/pilot
When ignitor button
is pressed and control
knob is pressed in
and turned to the
PILOT position,
there is spark at
ODS/pilot but no
ignition
Note: All troubleshooting
items are listed in order of
operation.
WARNING ICON G 001
WARNING
Turn off heater and let cool before servicing. Only a qualified
service person should service and repair heater.
WARNING ICON G 001
CAUTION
Never use a wire, needle, or similar object to clean ODS/pilot. This
can damage ODS/pilot unit.
Continued