Oilon GKP-50 MH, Operation And Maintenance Manual

Page: 91 / 100

Start failure
Condition Possible cause Action
Burner does not start. Burner
control remains in stand-by
position.
Break in control circuit. Required
start-up signal from burner control
terminal X10-L does not transfer to
terminal X10- ↑.
Find out the cause of the break.
Burner control is damaged.
Fault code 999
Check the code. Change.
Boiler actual value has not
reached required capacity
controller start limit.
Wait for boiler to cool down.
Safety loop open (burner). Display
0006.
Find out cause of break from
burner control terminals X6-L and
X6- ↑.
Safety loop open (burner). Display
0009.
Find out cause of break from
burner control terminals X7-L and
X7-↑.
Faulty differential air pressure
switch.
Display 10, 15
Change.
Fuel selector switch S2 in position
0.
Choose fuel.
Fan motor starts, lockout during
pre-purge.
Jammed servomotor. Servomotors
do not reach desired position.
Fault code 241, 251, 261, 271,
281
Check and adjust.
Faulty differential air pressure
switch
Fault code 613
Change.
Lack of air pressure , fault code 613
Condition Possible cause Action
Fan motor starts, but during pre-
purge period lockout occurs.
Faulty differential air pressure
switch setting
Check setting, adjust if necessary.
Dirty differential air pressure
switch impulse hoses or pipe
Clean hoses or pipe.
Faulty differential air pressure
switch
Change.
Dirty fan Clean.
Incorrect motor rotation direction Reconnect motor.
Ignition failure, fault code 3, 4
Condition Possible cause Action
Fan motor starts, control voltage
from burner control to ignition
transformer is switched on, no
ignition, and after a short time
lockout occurs.
Dirty or worn-out ignition
electrodes, damaged insulator
Clean or change.
Ignition electrodes too far apart Adjust electrodes according to
instructions.
Damaged ignition cable Change.
Faulty ignition transformer Change.
M5164 1640EN 89 (95)