LAARS NeoTherm NTV (Sizes 399-850 MBTU/h) - Service Manual - Manual (Page 74)

64 Service Manual - NeoTherm 500
Troubleshooting Combustion Problems
During adjiustment,
can reach target
figures in Table?
Cannot reach
Gas inlet
pressure OK?
Yes
No
Gas supply problem.
Check with gas company.
Interior of burner
is clean?
No Clean burner and heat exchanger.
See Section C5.
Can reach
Combustion
is OK.
Replace gas valve.
Any gas leaks
inside the unit?
No
Check all hoses,
tighten all connections.
Yes
C4