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47
W415-0680 / 04.10.08
BCDV36CFG TROUBLE SHOOTING GUIDE
B
EFORE
ATTEMPTING
TO
TROUBLESHOOT
,
PURGE
YOUR
UNIT
AND
INITIALLY
LIGHT
THE
PILOT
AND
THE
MAIN
BURNER
WITH
THE
GLASS
DOOR
REMOVED
.
SYMPTOM
PROBLEM
TEST SOLUTION
Pilot will not light
Wiring
- Verify the "S" wire for the sensor and the "I" wire for the ignitor are connected
to the correct terminals (not reverse) on the module and pilot assembly.
Makes noise with
no spark at
pilot burner
Loose Connection
- Verify no loose connections, electrical shorts in the wiring or ground out to any
metal object.
Module
- Turn the ON/OFF switch to the "OFF" position. Remove the igniter wire
"I" from the module. Place the ON/OFF switch to the "ON" position. Hold a
grounded wire about 3/16" away from the "I" terminal on the module. If no spark
the "I" terminal module must be replaced. If there is a spark the "I" terminal is
fi ne. Inspect pilot assembly for a shorted wire or cracked insulator around the
electrode.
Ignitor spark gap is incorrect
- Spark gap of the ignitor to the pilot should be .17" tor 1/8"
Pilot will not light.
Transformer
- Verify the transformer is installed and plugged into the module. Check voltage
of the transformer under load at the spade connections on the module with the
ON/OFF switch in the "ON" position. Acceptable readings of a good transformer
are between 3.2 and 2.8 volts A.C.
Makes no noise with no spark at
pilot burner
A shorted or loose connection
- Remove and reinstall the wiring harness that plugs into the module. Remove
and verify continuity of each wire in wiring harness.
Improper switch wiring
- Troubleshoot the system with the simplest ON/OFF switch
Module is not grounded
- Verify the value and pilot assemblies are properly grounded to the metal chas-
sis of the fi replace or log set.
Faulty module
- Turn the ON/OFF switch to the "OFF" position. Remove the igniter wire
"I" from the module. Place the ON/OFF switch to the "ON" position. Hold a
grounded wire about 3/16" away from the "I" terminal on the module. If no spark
the "I" terminal module must be replaced. If there is a spark the "I" terminal is
fi ne. Inspect pilot assembly for a shorted wire or cracked insulator around the
electrode.
Pilot sparks but will not light
Gas supply
- Verify that the incoming gas line ball valve is "Open". Verify that the inlet
pressure reading is within acceptable limits, inlet pressures must not exceed
14" W.C.
Module is not grounded
- Verify the value and pilot assemblies are properly grounded to the metal chas-
sis of the fi replace or log set.
Out of propane gas.
- Fill the tank.
Continues to sparks and pilot
lights, but main burner will not
light
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.
Poor fl ame rectifi cation or
contaminated sensor rod
- Verify the fl ame is engulfi ng the sensor rod. This will increase the fl ame
rectifi cation. Verify correct pilot orifi ce is installed and inlet gas specifi cations to
manual. (Remember, the fl ame carries the rectifi cation current, not the gas. If
the fl ame lifts from pilot hood, the circuit is broken. A wrong orifi ce or too high
of an inlet pressure can cause the pilot fl ame to lift.) The sensor rod may need
cleaning.
Poor grounding between pilot
assembly and gas valve
- Verify that the wire harness is fi rmly connected to module.
- Verify that the ceramic insulator around the sensor rod is not cracked, dam-
aged, or loose. Verify the connection from the sensor rod to the sensor wire.
Damaged pilot or dirty sensor
rod
- Clean sensor rod with an emery cloth to remove any contamination that may
have accumulated on the sensor rod. Verify continuity with multimeter with
ohms set at the lowest range.
Pilot lights Stops sparking / pilot
remains lit but burner will not
turn on
Wiring / Connection
- Inspect all wires, ensure good tight connections. Verify that all wiring is
installed exactly as specifi ed.
Wiring harness
- Inspect the wiring harness, and verify the harness is tightly connected to
the module. Verify that you have 7 wires and they are connected 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 multimeter to "DC" place the red lead from mul-
timeter on 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
the Green wire disconnected from valve that the voltage output from the
module should be between 2 and 3 volts
Exhaust fumes smelled in room,
headaches.
Fireplace is spilling.
- Check all seals.
Summary of Contents for BCDV2CFN
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Page 7: ...7 W415 0680 04 10 08 FIGURE 8...
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Page 51: ...51 W415 0680 04 10 08 NOTES...
Page 52: ...52 W415 0680 04 10 08 NOTES...