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Chapter 3. Operation
z
When an error occurs
The 7-segment display shows a alarm code and the sequence code for which the
alarm was issued alternately.
Every time the DISP switch is pressed, the display is changed between a alarm code
and the sequence code for which the alarm was issued alternately as well as the
flame voltage.
• Alarm codes
Alarm codes Sub-code Description
E 1
None Interlock error
E6
Ignition failure
E7
Flame failure
E9 02
Switch input
E9 03
Internal relay feedback (K1)
E9 05
Abnormal voltage on terminal 7 (PV)
E9 06
Abnormal voltage on terminal 8 (MV)
E9 07
Abnormal voltage on terminal 6 (IG)
E9 08
Alarm at power ON
E9 50
or more
Device error
Examples of sequence codes and alarm codes (Alarm code: When there is not a
sub-code)
Examples of sequence codes and alarm codes (Alarm code: When there is a sub-
code)
Switches every 0.8 s
Switches every 0.8 s
(Sub-code)
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