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If the light-receiving surface(sensing surface)
gets darkened with soot, the bad sensitivity
cause the wrong automatic operation.
Cleaning the flame detector
You can pull out the ame detector(black)
which is attached in the lower part of the
burner.
Wipe the glassy surface of the ame detector
with a scrap and x it in its opposition.
At least once a year, check for any loose joints
in the discharge(piping and ue), clogging in
ue, corrosion or leak. If any abnormality is
found, contact out sales agency for checking
up.(blocking pipes or holes, and so on)
Checking the exhaust pipe