62
Continues to
spark and pilot
lights, but main
burner will not
Short or loose
connection in sensor
rod.
-
Verify all connections. Verify the connections from the pilot
assembly are tight; also verify these connections are not
grounding out to any metal.
-
Verify the TH wires are connected to the valve.
light.
THTP
-
Verify the THTP wires are connected to the valve.
Poor flame
rectification or
contaminated sensor
rod.
-
Verify
the flame is engulfing the sensor rod. This will
increase the flame rectification. Verify correct pilot
orifice is installed and inlet gas specifications to manual.
(Remember, the flame carries the rectification current, not
the gas. If the flame lifts from the pilot hood, the circuit is
broken. A wrong orifice or too high of an inlet pressure
can cause the pilot flame to lift). The sensor rod may need
cleaning.
Pilot light stops
sparking / pilot
remains lit but
burner will not
turn on.
Exhaust
fumes smelled
in room,
headaches.
Flames
Pilot has been painted
-
Using a piece of sandpaper or emery cloth remove the paint
from the pilot hood, ignitor and flame sensor.
Wiring / connection.
-
Inspect all wires, ensure good tight connections. Verify that
all wiring is installed exactly as specified.
Wiring harness.
-
Inspect the wiring harness and verify the harness is tightly
connected to the module. Verify that you have all wires
connected and in the right order.
Module or valve.
-
Conduct the following test to verify if the problem is the
module or valve. To measure voltages, turn the multimeter
to “DC”, place the red lead from the multimeter to the screw
on the terminal block for the wire you are checking, touch
black lead to ground (valve body). Importantly, a “zero”
volts reading does not automatically indicate a bad module,
there may be too little resistance in the valve solenoid.
Check if the green wires is disconnected from the valve.
The voltage output from the module should be between 1.5
and 3 volts.
Pilot has been painted
-
Using a piece of sandpaper or emery cloth remove the paint
from the pilot hood, ignitor and flame sensor.
Appliance is spilling.
-
Check all seals.
Door is ajar.
-
Ensure door is secured properly.
are very
aggressive.
Venting action is too
great.
-
Check to ensure venting is properly sealed or restrict vent
exit with restrictor plate. Restrictor plate not available in
some models.
Main burner
flame is a
blue, lazy,
transparent
flame.
Blockage in vent.
-
Remove blockage. In really cold conditions, ice buildup
may occur on the terminal and should be removed as
required. To minimize this from happening again, it is
recommended that the vent lengths that pass through
unheated spaces (attics, garages, crawl spaces) be
wrapped with an insulated mylar sleeve. Prevent sleeve
from sagging. Contact your local authorized dealer for
more information.
White / grey
film forms.
Sulphur from fuel
is being deposited
on glass, logs or
combustion chamber
surfaces.
-
Clean the glass with a recommended appliance glass
cleaner.
DO NOT CLEAN GLASS WHEN HOT!
If deposits
are not cleaned off regularly, the glass may become
permanently marked.
42.13_2C
W415-1283 / E / 12.21.16
SYMPTOM
PROBLEM
TEST SOLUTION
EN
Summary of Contents for CBHD4N
Page 22: ...22 W415 1283 E 12 21 16 ound the pipe 21 1B COLLAR VENT PIPE SHIELD...
Page 23: ......
Page 66: ......
Page 67: ...65 W415 1283 E 12 21 16...