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7703301 - 01 - 16072018
Burner does not start:
No voltage at the control and regulating centre
No "burner ON" signal from the heating circuit control (see
table )
Gas tap closed
No ignition
Burner goes into fault mode:
Without flame formation:
No ignition
Ionization electrode has ground connection
Ionization electrode is not connected
No gas
Gas pressure too low
In spite of flame formation the burner goes into fault mode after expiration
of the safety time:
Ionization electrode defective or soiled
Ionization electrode does not penetrate the flame
Ionization electrode is not connected
Gas pressure not stable
11 Troubleshooting
Fault code
149
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