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72
Chapter 4 Troubleshooting
Error code
Meaning
Cause
Ignition failure
(manual reset)
During ignition trials, if unit failed
to ignite 10 times continuously,
error code 11 will appear.
Failure event
If the unit failed to detect flame during ignition sequence pre-purge time will exceed 10 sec, and error code
Er 11 will appear.
Check point
① Check separation distance
after removing the flame rod.
(separation distance: 1/8”)
② Check ignition
transformer and
electrical wires for
proper connection.
1/8”
③ Check Gas Inlet
Pressure Range:
NG:
3.5” WC ~ 14” WC
LP:
3.5” WC ~ 14”WC
④ Please check
flame detector sensor’s
connecting line and
ensure correct position
as shown.
■ From more than DC 2.5V after ignition safety, cut-off will appear
① When setting before ignition is less than DC 2.5V: Replace flame sensor.
② When setting after ignition is more than DC 2.5V: Replace
flame sensor.
Flame detector sensor setting
(Please check after closing front cover)
ITEM
Normal operating settings
Before ignition
More than DC 2.5V
After ignition
Less than DC 2.5V
⑤ If the flame sensing viewing port is excessively discolored, loss of fame will occur. To correct this
problem, replace the flame viewing glass.
⑥ If all things are normal, please replace main controller.
WARNING
Failure to turn the power off to the appliance before repair could result in serious injury or death.
LP-528 REV. 8.01.14