49
06/2011 - Art. Nr. 13 018 118C
In the event of faults, first check the
basic requirements for normal
operation:
•
Is there any current?
•
Is there any gas pressure? Do the
valves open?
•
Are all control devices set correctly?
•
Are the control panel switches set
correctly?
If the fault persists, check the
programme position on the control and
safety unit.
Do not repair safety components, they
must be replaced with identical compo-
nents.Use
Only Original spare parts
.
Note: After each intervention
•
Check the exhaust gas values.
•
Enter the measurement values in
the appropriate records.
Troubleshooting
Gas
Symbol
Fault
Cause
Corrective action
w
Burner idle with programme symbol,
no start
Gas pressure normal
Insufficient gas pressure
Gas pressure switch: defective or adjusted
with incorrect min. value Air pressure
switch blocked in operating position
Adjust the gas connection pressure
Clean the gas filter
Check, adjust or replace the gas pressure switch
Replace air pressure switch
w
Burner in fault mode,
Programme symbol
Parasitic flame on control system
shut-down
Check gas valves for leaks
Add reventilation to programme
P
Programme symbol “P”
Motor does not start. Switch in
“Off” position
Motor does not start. Switch in
“On” position
Motor starts
Air pressure switch defective
Protection switch triggered
Switch defective
Wiring problem between switch and motor
Motor defective
Air pressure switch defective or wrongly set
Replace air pressure switch
Unlock, reset or replace protection
devices
Replace switch
Check the wiring
Replace the motor
Reset or replace air pressure
switch
z
Programme symbol
Fault in flame monitoring system
Clean flame monitor
Replace control and safety unit
1
1
x
or
v
Programme symbol “1"
No ignition
Valves do not open
Flame head
Flame appears but pulsates and goes out
(flame monitor signal too low)
Burner stays on initial blower operation with
no flame
Programme symbol
Programme symbol
Other faults
Fault shut-down at any
time with no programme symbol
Restart attempt by control and safety
unit without fault shut-down
Ignition electrodes short-circuited
Ignition cable defective
Ignition transformer defective
Control and safety unit defective
Break in electrical connection
Solenoid(s) short-circuited
Valve jammed
or proportional regulator jammed
Flame head wrongly set
Too much air or gas
Servomotor defective
Air flap jammed
Mechanical coupling defective
Parasitic flame at start-up
Gas pressure switch wrongly set or defective
Set or replace electrodes
Replace ignition cable
Replace ignition transformer
Replace control and safety unit
Check wiring between
Combustion control unit,Check servomotor
and prop-regulator
Replace solenoid(s)
Replace valve or regulator
Set flame head correctly
Adjust air flap and gas flow rate correctly
Set or replace servomotor
Free air flap
Inspect or replace coupling
Replace control and safety unit
Reset or replace gas pressure switch.
EN
Summary of Contents for VGL 06.1200 DP
Page 26: ......
