33740-9-1015
Page 53
33740-9-1015
Page 52
CONTROL SYSTEM TROUBLESHOOTING
2
Main burner lights
when the pilot only
should light.
Pilot holds the flame?
Main burner ignites?
Main burner remains
ON?
1.
Replace IFC board.
2.
Replace the gas valve.
1.
Verify the pilot flame fully engulfs the tip of the sense electrode. If not, replace the pilot
assembly.
2.
Replace the pilot assembly.
3.
Carefully clean the electrical connections of the sense cable and the IFC board sense cable
connection.
4.
Replace the sense cable, the cable-sense electrode assembly, or the pilot assembly.
5.
Verify the pilot is properly grounded.
6.
Replace the pilot orifice with a new orifice of correct size and type or replace the pilot
assembly.
7.
If pilot flow adjuster screw is not sealed, correct it.
1.
Verify the electrical connections’ integrity and make sure they are in accordance with the
relevant system wiring diagram. If necessary, replace the wire harness.
2.
Check if the optional remote transmitter is in “thermostat” or “on” mode and verify there is a
call for heat (if using a thermostat remote). Adjust the setting for heat.
3.
Verify that the pilot hood is properly fitted and a pilot flame is directed to properly ignite the
main appliance burner.
4.
Replace the main burner orifice with a new orifice of correct size and type or replace the
pilot assembly. Under all circumstances, follow the service instructions.
5.
Remove the provided wiring harnesses from EV2 of gas valve (red base) and verify voltage
at ignition between the EV1 terminal and the ground connection on the valve body.
5.1
If the voltage is greater than 0, then replace valve.
5.2
Or Replace IFC.
6.
Check the pressure at the outlet pressure test point out according to the manufacturer’s
instruction. If not in accordance, replace the gas valve.
1.
Verify the electrical connections’ integrity and make sure they are in accordance with the
relevant system wiring diagram. If necessary, replace the wire harness.
2.
Check the pressure at the outlet pressure test point out according the manufacturer’s
instruction. If not in accordance, replace the gas valve.
3.
With the system in the OFF position, connect the voltmeter between the EV2 terminal
(green base) on the valve and the ground on the valve body.
Turn the system ON, let pilot light, and observe the following voltage sequence: once the pilot
flame is proved, the voltage on EV2 should spike to approx. 5 VdC for approx. 2 sec and then
drop to approx. 0.6 VdC continuously.
3.1
If the sequence is followed, replace the gas valve.
3.2
If the sequence is not followed, replace the IFC board.
YES
YES
YES
NO
NO
NO
NO
Main burner
modulates
properly?
1.
Replace the main burner orifice with a new orifice of correct size (partial blockage possible).
Verify that the main burner flame modulates. If it does not modulate, replace the gas valve.
2.
Verify that the gas valve outlet pressure limits are in accordance with the manufacturer
specifications. If not, replace the gas valve.
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR
EXpLOSION MAY RESULT CAUSING pROpERTY DAMAGE, pERSONAL INjURY, OR
LOSS OF LIFE.
A. This appliance must be lighted with the remote control.
When lighting the pilot, follow these instructions exactly.
B. BEFORE LIGHTING, smell around the appliance area for
gas. Be sure to smell next to the floor because some gas
in heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch.
• Do not use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions. If you can not reach your gas
supplier, call the fire department.
C. Use only the remote control to operate the valve. Never
use tools. If valve does not operate, don't try to repair it,
call a qualified service technician. Force or attempted
repair may result in a fire or explosion.
D. Do not use this appliance if any part has been underwater.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been underwater.
LIGHTING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
1. Turn off all electric power to the appliance if service is to
be performed (if applicable).
2. Locate On/Off gas cock and turn clockwise to
"OFF." Do not force.
LIGHTING INSTRUCTIONS
1. STOp! Read the safety information above.
2. Turn OFF electric power to the appliance.
3. Turn gas cock counterclockwise
to "ON"
position.
4. Wait ten minutes to clear out any gas. Then smell for gas,
including near the floor. If you smell gas, STOP! Follow
"B" in the safety information above on this label. If you
do not smell gas, go to the next step.
5. Turn ON electric power to the appliance.
6. Using the remote control, turn main flame to "ON." Refer
to the Multifunction Remote Operating Instructions for
more information. If the pilot does not light within 60
seconds, stop and go back to Step 4.
7. Refer to remote control instructions for detailed
information, control features, and operation. Note:
Refer to Multifunction Remote operating instructions
for selection of continuous standing pilot mode or
intermittent pilot mode. If the pilot or burner does not stay
lit (in the standing pilot mode), stop and immediately call
a qualified service technician or gas supplier.
8. If the burner or pilot does not operate properly after
several tries, turn the gas control knob clockwise
to "OFF" and call your service technician or
gas supplier.
9. Operation of the gas valve, blower, and/or optional light
must be controlled by using the hand held remote control.
Refer to remote instructions for detailed operation
information.
IGNITOR
