How to Guide

Burner Starts, Flame Is Established; Then Burner Locks Out On Safety
PROCEDURE
1. a. Reset safety switch by
pushing red reset button.
b. Disconnect cad cell
leadwires at oil primary.
c. Jumper thermostat
terminals to start burner:
l Jumper low volt
thermostats at oil
primary.
l Jumper line volt
thermostats at
thermostat.
d. After flame is established,
but before safety switch
locks out, short cad cell
by jumpering F-F
terminals.
2. a.
b.
C.
Disconnect line voltage
power and reconnect cad
cell F-F terminals.
Unplug cad cell and clean
face with soft cloth. Check
sighting for clear view of
flame. Replace cell in
socket.
Reconnect line voltage
power. Reset safety switch
by pushing red reset
button, and jumper
thermostat terminals
to start burner:
l Jumper low volt
thermostats at
oil primary.
l Jumper line volt
thermostats at
thermostat.
3. Reset safety switch and
restart burner.
T CORRECTIVE ACTION
BURNER LOCKS OUT
Oil primary control is
defective-replace. If there
is any doubt that F-F terminals
were jumpered within safety
switch timing, wait 5 minutes,
then repeat procedure
(steps 1 a-l d).
Replace cad cell with Part No.
130367, go to step 3.
Check cad cell view of flame,
flame shape, and oil nozzle.
If flame is normal and cad cell
has good view of flame, check
for open circuits in socket
assembly wiring. Replace
assembly, if necessary.a
BURNER KEEPS RUNNING
Check cad cell with ohmmeter,
see Cad Cell Troubleshooting
table on page 9. If ohmmeter is
not available, go to step 2.
Cad cell is okay.
Cad cell and socket assembly
are okay.
“If cad cell is okay and oil primary appears okay but system continues to lockout on safety, repeat steps 1 a-l d using a2700
ohm resistor to jumper F-F terminals. Burner will lock out if oil primary is defective; replace oil primary, if necessary.