12
8. Check cad cell sighting
for view of flame.
-
Disconnect line
voltage power and
open line switch.
-
Unplug cad cell and
clean face with soft
cloth. Check
sighting for view of
flame. Place cad
cell back in socket.
-
Reconnect line
voltage and close
line switch.
-
Start burner,
Burner locks out.
Go to step 9
Burner keeps running
, until “call
for heat” is satisfied.
System is okay.
9. Check Control & Cad
cell.
-
Remove cad cell
wires from
connectors on
primary and leave
lead wires open.
-
Apply power to
device
-
Place jumper
across cad cell
terminals after
burner motor turns
on.
Burner doesn’t run.
Replace primary control.
Burner runs.
Control is okay, replace cad cell.
