No electric arc for ignition
Condition
Possible cause
Action
Fan motor starts, control voltage
from burner control to ignition
transformer is switched on, no
electric arc is formed, and after a
short time lockout occurs.
Dirty or damaged ignition
electrodes.
Clean or change.
Ignition electrodes too far apart.
Adjust electrodes according to
instructions in section
Adjusting
combustion head
.
Damaged or disconnected ignition
cable.
Change.
Faulty ignition transformer.
Change.
Flame does not form
Condition
Possible cause
Action
Fan motor starts, the electric arc
used for ignition is in order. After
a short period of time lockout
occurs.
Fuel valves do not open or open
too slowly:
Break in control circuit.
Faulty actuator.
Find out cause of the break.
Replace faulty part.
Faulty fuel pressure.
Check components (filter, throttle
plug, regulator, pressure switch)
and adjust.
Faulty fuel/air ratio.
Adjust.
Faulty combustion head
adjustment.
Check and adjust.
Nozzle dirty or blocked.
Clean or change.
Too low ignition load.
Check.
Burners with ignition pilot gas valve, ignition flame does not form
Condition
Possible cause
Action
Fan motor starts, ignition is in
order. After a short time lockout
occurs.
Gas valve 1 or ignition gas
valve(s) do not open or open too
slowly.
Incorrect ignition gas valve setting Adjust ignition gas valve.
Faulty actuator.
Change faulty part.
Cable damaged.
Change.
Break in valve control circuit.
Find out cause of the break.
Lockout occurs after flame establishment
Condition
Possible cause
Action
Flame forms. Lockout occurs.
Gas pressure unstable.
Check and repair.
Incorrect burner adjustment
Adjust.
When burner runs to full load,
flame extinguishes, shutdown
occurs and then re-start.
Gas pressure too low because
min. gas pressure switch released.
Check operation and regulations.
Blocked filter
Clean or replace filter.
M4219 2305EN
107 (111)
Summary of Contents for GP-600 M
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