71
9 Faults rectification
9.3 Operating problems
The following faults must be rectified only by qualified personnel:
Observation
Cause
Rectification
Poor start behaviour of the burner
Mixing pressure too high
u
Decrease mixing pressure at
ignition position.
Ignition electrodes set incorrectly
u
Set the ignition electrodes.
Mixing head set incorrectly
u
Set the mixing head.
Flame pulsating or burner booming
Mixing head set incorrectly
u
Set the mixing head.
Incorrect combustion air quantity
u
Adjust the burner.]
Stability problems
Mixing pressure too high
u
Decrease mixing pressure at
ignition position.
No display at the operating interface
Plug connection to the operating panel
u
Plug the connector correctly
incorrect
Operating interface defective
u
Replace the operating interface.
83055116 • 1/2016-05
Installation and Operating Instructions
Gas burner WG20.../1-C ZM-LN (W-FM 25)
