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29733 R2 06/01/2003
35
Table C-3: R7184 Troubleshooting
continued from previous page
Procedure Status Corrective Action
Burner locks out. Go to step 10. 9. Check cad cell sighting
for view of flame.
· Disconnect line
voltage power and
open line switch.
· Unplug cad cell and
clean cad cell face
with soft cloth. Check
sighting for clear view
of flame. Replace cad
cell in socket.
· Reconnect line
voltage power and
close line switch.
· Start burner.
Burner keeps running. System is OK.
Indicator light is on. Remount control onto burner housing. Go to step 6. 10. Check cad cell.
· Disconnect line
voltage power and
open line switch.
· Remove existing cad
cell and replace with
new cad cell.
· Disconnect all wires
from thermostat
terminals to ensure
that there is no call
for heat.
· Reconnect line
voltage power and
close line switch.
· Expose new cad cell
to bright light such as
a flashlight.
Indicator light is off. Go to step 11.
Continued on next page.