Overview of Primary Product
26
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SCANNER SIGHTING CONDITIONS
Aim scanners at the third of the flame closest to the burner noz-
zle, as shown at left. This is especially true for oil flames which
typically have less UV radiation in the outer flame. The scanner
should view the intersection of the pilot and main flames. When
sighting scanners, please consider the following:
1.Sight the scanner away from the ignition spark. Sighting the
spark or its reflections from burner internals can cause nuisance
shutdowns during burner ignition. If necessary, use a scanner
orifice to reduce spark pickup.
2.Do not allow the scanner to detect a pilot flame that is too
small to ignite the main burner.
3. Perform a minimum pilot test when installing or adjusting any pilot or main burner system; see
“Minimum Pilot Test” on page 22.
REMOTE DISPLAY DIAGNOSTIC MESSAGES (Listed Alphabetically)
MESSAGE TYPE EXPLANATION
AIR FAILURE
XX:XX:XX LOCKOUT
LOCKOUT Combustion air flow limit switch (strip J1, terminal 2) opened for more than
two seconds once initially proven.
AIR FAILURE
RECYCLING
STATUS Combustion air flow limit switch (strip J1, terminal 2) opened; control will
recycle one if “recycle” has been selected (see “Interrupted or Intermittent
Pilot” for further details.
AIR NOT PROVEN
XX:XX:XX LOCKOUT
LOCKOUT Combustion air flow limit switch (strip J1, terminal 2) did not make within ten
seconds of fan being energized.
AIR PROVEN STATUS Combustion air flow limit switch (strip J1, terminal 2) closed within ten sec-
onds of fan being energized.
AUTOMATIC MODULATION STATUS Modulating motor is sent to automatic operation. Terminal 1 is connected to
terminal 2 on terminal strip J3.
AUX.LIM.#1 FAIL
HH:MM:SS LOCKOUT
LOCKOUT Auxiliary input #1 has lost its voltage during system operation, causing a lock-
out at the indicated time.
AUX.LIM.#2 FAIL
HH:MM:SS LOCKOUT
LOCKOUT Auxiliary input #2 has lost its voltage during system operation, causing a lock-
out at the indicated time.
AUX.LIM.#3 FAIL
HH:MM:SS LOCKOUT
LOCKOUT Auxiliary input #3 has lost its voltage during system operation, causing a lock-
out at the indicated time.
AUX.LIM.#4 FAIL
HH:MM:SS LOCKOUT
LOCKOUT Auxiliary input #4 has lost its voltage during system operation, causing a lock-
out at the indicated time.
D=INTERNAL FAULT
XX:XX:XX:XX LOCKOUT
LOCKOUT Internal control failure; replace controller.
FAN ENERGIZED STATUS Blower motor (strip J2, terminal 3) is energized at the start of pre-purge.
FLAME ( )FAIL
RECYCLING
STATUS Main flame lost during automatic modulation; control will recycle once if
“recycle” has been selected.
FLAME #(X) FAILXX:XX:XX LOCK-
OUT
LOCKOUT Main flame lost during operation in the automatic modulation mode. Burner
number (X) given of failed unit.
FLAME (Y) XX.XV
TIME=XXXX:XX:XX
STATUS Main flame of burner number (Y) is proven in the automatic modulation mode;
flame strength is XX.XV (volts DC).
Elapsed time is shown in hours:minutes:seconds.
HI DAMPER FAIL
XX:XX:XX LOCKOUT
LOCKOUT High damper or high purge rate switch (terminal “D”) did not make at the end
of pre-purge to high fire.
K-INTERNAL FAIL
XX:XX:XX LOCKOUT
LOCKOUT Internal control failure; replace controller.
L-INTERNAL FAIL
XX:XX:XX LOCKOUT
LOCKOUT Internal control failure; replace controller.
MAIN
BURNER
SCANNER
SIGHT
LINE
1/3 of
FLAME
LENGTH
SCANNER
FIGURE 8.
Scanner Sighting