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F9
Reason
Flame detected during normal operation, but was lost while running.
Display message
F10
Reason
Flame signal is detected when it cannot be expected.
Display message
F11
Reason
The controller does not detect a correct fan speed.
Display message
F12
Reason
Software parameters have been programmed.
Display message
F13
Reason
Fault during programming of the water heater software parameters.
Display message
F15
Reason
Rear wall thermostat (clixon) detects a too high temperature.
Display message
F16
Reason
Temperature difference between flow and return exceeds limitation value, or 'dT block or delta direct
block 'has occurred 3 times
Display message
F17
Reason
Maximum thermostat (clixon) measured a too high flow temperature.
Display message
F19
Reason
The pressure switch detects a high pressure in the flue/siphon system.
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76
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