Lamtec CMS, Manual

Page: 262 / 284

261
9 Faults
No. Description D1 D2 Extra
245 Fuel valves are OPEN in spite of malfunction.
The fuel valves are open although a fault is pending.
– Reset fault
– If the fault still exists:
Send fault number and diagnostic code to the
technical support.
– Replace the device
Internal
information 0 R = 0
Power ON Reset
246 No fault shut-down of the FAT although a fault is
pending.
– Reset fault
– If the fault still exists:
Send fault number and diagnostic code to the
technical support.
– Replace the device
Internal
information 0 R = 0
Power ON Reset
247 Pilot air pressure is missing.
No air pressure for the pilot burner.
– Check air pressure switch
– Check fan
Internal
Information 0 R = 0, 0, 0, 0
Reset
248 Valve leakage test: Gas pressure is still present.
Main valve 1 is leaking
– Check gas pressure switch for function
– Is main valve 2 opened during the test?
No: check the valve, replace if necessary
check wiring
– Check output pressure at the main valves during
the venting of the test line.
If the outlet pressure is higher than the adjusted gas
pressure at the pressure switch, take the following
measures:
– Re-adjust the pressure switch and recalculate the
detected leakage rate (observe local standards
and guidelines).
– Reduce the aperture of the air damper for venting
– If the fault still exist: change main valve 1
Internal
Information Fuel train R = 0, 0, 0, 0
Reset
249 Valve leakage check: Gas pressure is still present.
Main valve 2 is leaking
– Check gas pressure switch for function
– Is main valve 1 opened during the test?
No: check the valve, replace if necessary
check wiring
– Check output pressure at the main valves
during the venting of the test line.
If the outlet pressure is higher than the
adjusted gas pressure at the pressure switch,
take the following measures:
– Re-adjust the pressure switch and recalculate
the detected leakage rate (observe local
standards and guidelines).
– Reduce the aperture of the air damper for
venting
– If the fault still exist: change main valve 2
Internal
information Fuel train R = 0, 0, 0, 0
Reset