Fault Finding And Troubleshooting - Lamtec GFI 48 Operating Instructions Manual

7 Correcting Faults
7.2

Fault Finding and Troubleshooting

Fault
No ignition flame forms.
Causes
There is no combustion air present or the combustion air is insufficient.
Possible cause
- Fan not running.
- An actuator is closed (air
flap, ball valve, valve).
- An actuator is faulty (air
flap, ball valve, valve).
- Air line clogged.
- Air line or fan incorrectly
dimensioned.
- Combustion air is
contaminated.
- Gas does not comply with
the specifications.
- Gas/air ratio does no
comply with the
specifications.
No fuel gas reaches the ignition burner.
Possible cause
- An actuator is closed (ai
flap, ball valve, valve).
- An actuator is faulty (air
flap, ball valve, valve).
- Gas pressure not
sufficient.
- In the tubing there is
residual inert gas (N ).
2
58
Fault rectification
Check fan.
Ensure that the fan is
being activated correctly by the system control.
Open actuator.
Check/replace actuator.
Check line air line.
Correct the dimensioning of the tube length,
tube diameter, fan power.
Clean or replace air filter.
If air filter is missing, retrofit this.
Gas must comply with the specifications of the
ignition burner (see type plate and technical
specifications).
Set the gas and air operating pressures cor-
rectly (see chapter 5.3 Commissioning ).
Open actuator.
Check/replace actuator.
Correct the dimensioning of the tube length,
tube diameter, fan power.
Flush the gas line by repeating ignition attempt
until flame ignites.