35
Group II Warning Messages (Can be suppressed, see Note 1)
Notes
1. Group II Warning messages are suppressed whenever “Do NOT Display” is selected under the FS Squelch Msgs
parameter in the CONFIG menu. This is the default setting. Although the
message
will be suppressed, if the Group II
Warning
condition
exists, the appropriate flame signal will still be driven to zero. To display the Warning messages,
select “Display” under the FS Squelch Msgs parameter.
2. An “FEG” Warning condition could only exist if the user had manually changed the MIN or MAX value for the
FEG range in the IR and UV Settings Menus. The default settings for these parameters are 5 and 255 respectively.
3. This message is only active if the affected sensor, IR or UV, has been selected.
4. Excess signal for a specific sensor (IR or UV) will be reduced by setting the Sensor’s (IR or UV) Gain Range to a
lower Setting. See Figure 25 on page 38. Additionally, installing a sight pipe orifice will simultaneously lower BOTH
IR and UV measurable flame signals and so is a preferential solution than using the individual sensor Gain Range
settings.
Warning Message
Condition
Effect
FRx IR FEG LESS THAN MINIMUM
The IR FEG (Front-End-Gain) has dropped
below the MIN value selected by the user in
the IR Settings Menu (see Note 2).
The IR flame signal is driven to zero.
FRx IR FEG GREATER THAN
MAXIMUM
The IR FEG (Front-End-Gain) has risen above
the MAX value selected by the user in the IR
Settings Menu (see Note 2).
The IR flame signal is driven to zero.
FRx UV FEG LESS THAN MINIMUM
The UV FEG (Front-End-Gain) has dropped
below the MIN value selected by the user in
the UV Settings Menu (see Note 2).
The UV flame signal is driven to zero.
FRx UV FEG GREATER THAN
MAXIMUM
The UV FEG (Front-End-Gain) has risen
above the MAX value selected by the user in
the UV Settings Menu (see Note 2).
The UV flame signal is driven to zero.
FRx FAILED THE IR LIGHT CHECK
The IR source is likely not a real flame. The
scanner uses a “single-source” light check to
reject incandescent or fluorescent light
sources.
The IR flame signal is driven to zero.
FRx FAILED THE UV LIGHT CHECK
The UV source is likely not a real flame. The
scanner uses a “single-source” light check to
reject incandescent or fluorescent light
sources.
The UV flame signal is driven to zero.
TOO MUCH IR SIGNAL
The flickering (AC) component of the IR
source is too strong. The scanner cannot
properly detect the flame flicker. (See notes
3,4).
The IR flame signal will become
erratic or go to zero.
TOO MUCH UV SIGNAL
The flickering (AC) component of the UV
source is too strong. The scanner cannot
properly detect the flame flicker. (See notes
3,4).
The UV flame signal will become
erratic or go to zero.
