Lamtec GFI 48 - 7.2 Troubleshooting Guide

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