40
UK
EQUIPMENT
M
LME EQUIPMENT
The release pushbutton on the equipment is the main component for accessing all the diagno-
stic functions (activation and deactivation) as well as for releasing the control and checking
device. The release pushbutton has a multicoloured led which indicates the state of the control
and checking device during operation and when the diagnostic function is in use.
EQUIPMENT STATE INDICATORS
Description
Condition Colour sequence
Stand by, other intermediate states No light
Ignition stage Yellow, ashing
Correct operation Green
Incorrect operation, current level of ame detector below permitted
minimum
Green, ashing
Drop in voltage Alternating yellow red
Burner lock out Red
Fault (see table) Red, ashing
Stray light before burner ignition Alternating green red
Rapid ashing for diagnostics Red, rapid ashing
If the burner is locked out, there will be a steady red light on the lock out pushbutton. By pressing the
transparent pushbutton, the control and checking device will be released. By pressing it for more than
3 seconds, the diagnosis stage will be activated (red light ashes rapidly). The table below describes the
causes of the lock out or fault in relation to the number of ashes (always red).
The diagnosis function is interrupted by pressing the release button for at least 3 seconds.
DIAGNOSIS OF LME EQUIPMENT FAULTS AND LOCK OUT
Visual indication Possibili cause
2 ashes
No ame signal
- Faulty fuel valves
- Faulty ame detector
- Incorrect burner setting, no fuel
- No ignition
3 ashes
- Air pressure switch failure
- Air pressure switch loss of signal after T10
- Air pressure switch contact open
4 ashes
Stray light on ignition
5 ashes
Time out “LP”. “LP” is welded in working position
6 ashes
Free
7 ashes
No ame signal during operation
- Faulty fuel valves
- Faulty ame detector
- Incorrect burner setting, no fuel
8 ashes
Free
9 lashes
Free
10 ashes
Incorrect electrical connection or damage to equipment
14 ashes
Open thermostats switch line
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