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simply the failure of the system to sense the establishment of the flame. Should this situation exist for a
period of time longer than the ignition control’s stated lockout timing, the control will shut down or go into
permanent lockout. The only way to get the burner to recycle is to break, and then reinstate power to the
burner.
The following situations can lead to flame sensing problems and can be checked without
disassembling the burner:
The burner is not properly gr
ounded to “earth ground” of the supply voltage.
The ignition control is not properly grounded to the burner itself. Using an ohm meter, check the wire
attached to both parts for good contact and continuity.
The burner ignition control is polarity sensitive. The polarity of the incoming line voltage may be
reversed. Verify that black and white wires are hot and neutral respectively, and that they are
connected to the corresponding black and white wires on the burner.
The remaining checks and/or adjustments require removal of the gas train:
The connections from the “SENSE” terminal of the ignition control to the end of the flame sensor may
be broken at some point. Check all quick connect terminations and connections. Check the continuity
with an ohmmeter while flexing wires to assure no hidden conductor breakage exists. If replaced,
wiring must be of equal or heavier gauge and equal or better temperature rating.
The flame sensor probe may be grounded out. Assure that the flame sensor probe is not touching the
burner head. The flame sensor should be positioned in the center of the clearance groove on the outer
edge of the burner head with approximately 1/16” (1.5875mm) clearance from the head. The flame
sensor must not be positioned too far away from the head as this may result in grounding out of the
flame sensor against the inside surface of the air tube.
The flame sensor probe should be free of soot and creosote. Deposits may insulate the probe, leading
it not to pass the electrical charge to the flame. The probe can be cleaned with steel wool, emery
paper or extra fine sandpaper.
Deposits on the flame sensor probe are the leading cause of nuisance
lockouts in dual-fuel wood/gas fired appliances.
The flame sensor probe may be burned away. Check it against dimensions on the IGNITER AND
FLAME SENSOR PROBE SETTINGS drawing (Figure 21).
The dimensional location of the flame sensor probe may be incorrect, or the probe may be bent out of
shape. Check it against dimensions on the IGNITER AND FLAME SENSOR PROBE SETTINGS
drawing and adjust if necessary.
The spark electrode gap may be incorrect, resulting in no spark or an inadequate spark that will not
ignite the gas properly. Check the electrode gap against the IGNITER AND FLAME SENSOR PROBE
SETTINGS drawing and adjust if necessary.
The high tension lead conductor from the ignition transformer to the tip of the spark electrode may be
broken, preventing the high voltage current from getting to the electrode tip. Check all connections
thoroughly and/or check to continuity of the lead wire assembly with an ohmmeter.
Once all of the items listed previously have been carefully checked and corrected as necessary, re-insert
the gas train assembly into the burner. NOTE: be careful not to bend the air proving switch sail arm (if so
equipped) or accidentally reposition with the flame sensor probe or igniter electrode during reinstallation of
the gas train assembly.
If, after all of the above listed items have been carefully checked, the burner still fails to work, it is due one
of or more of the following problems:
1. Unit sparks and fires but will not stay lit. Ignition control module is malfunctioning and must be
replaced.
2. Unit does not spark. Ignition transformer is bad and must be replaced.
Содержание HSG200
Страница 30: ...30 Figure 20 Flame Current Measurement Top Wayne control Bottom Honeywell control...
Страница 48: ...48 Figure 29 continued Junction Box Assemblies Exploded Figure 30 Motor Assembly Exploded...
Страница 49: ...49 Figure 31 Gun Assembly Exploded Figure 32 HSG Series Burner Exploded...
Страница 50: ...50 Figure 33 Outer Dimensions of HSG Series Burner 13 2 335 mm REF 7 7 in 195mm 7 in 178 mm 15 25 in 377 mm...
Страница 52: ...52 NOTES...