UK
39
EQUIPMENT
M
LME EQUIPMENT
The release pushbutton on the equipment is the main component for accessing all the dia-
gnostic functions (activation and deactivation) as well as for releasing the control and che-
cking 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
Condition
Colour sequence
Standby, other intermediate states
No light
Ignition stage
Yellow flashing
Correct operation
Green
Incorrect operation, current level of flame detector below permitted
minimum
Green flashing
Drop in voltage
Alternating yellow red
Burner lock out
Red
Fault (see table)
Red flashing
Stray light before burner ignition
Alternating green red
Rapid flashing for diagnostics
Red rapid flashing
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 flashes
rapidly). The table below describes the causes of the lock out or fault in relation to the num-
ber of flashes (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
Possible causes
2
flashes
No flame signal
- Faulty fuel valves
- Faulty flame detector
- Incorrect burner setting, no fuel
- No ignition
3
flashes
- Air pressure switch failure
- Air pressure switch loss of signal after T10
- Air pressure switch contact open
4
flashes
Stray light on ignition
5
flashes
Time out “LP”. “LP” is welded in working position
6
flashes
Free
7
flashes
No flame signal during operation
- Faulty fuel valves
- Faulty flame detector
- Incorrect burner setting, no fuel
8
flashes
Free
9
flashes
Free
10
flashes
Incorrect electrical connection or damage to equipment
14
flashes
Open thermostats switch line
Содержание EM 35-E
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