68
MYDENS
COSMOGAS
7 - USE
7.17.2 - Diagnostics: errors “Err”
Error
Error description
Checks
Solutions
Err 100 Software error on the control board
Replace the control board.
Err 101 Software error on the control board
Replace the control board.
Err 102 Software error on the control board
Replace the control board.
Err 103 Software error on the control board
Replace the control board.
Err 104 Software error on the control board
Replace the control board.
Err 105 The supply temperature exceeds 95°C with
the gas valve closed
Check that the electrical resistance of the
two supply sensors (detail "35" of Figure 2)
matches the graph in section 8.24.
If one of the two sensors does not match,
the double supply sensor must be replaced.
Check that the gas valve closes the gas
correctly when the burner switches off.
The gas valve must be replaced if it does
not close correctly.
Err 106 Software error on the control board
Replace the control board.
Err 107 Software error on the control board
Replace the control board.
Err 108 Software error on the control board
Replace the control board.
Err 109 Software error on the control board
Replace the control board.
Err 110 Software error on the control board
Replace the control board.
Err 111 0-10 V input polarity reversed
Check the polarity input 0-10 V
Restore correct polarity.
Software error on the control board
Replace the control board.
Err 112 Software error on the control board
Replace the control board.
Err 113 0-10 V input polarity reversed
Check the polarity input 0-10 V
Restore correct polarity.
Software error on the control board
Replace the control board.
Err 114 Flame detected in a moment when it should
not be
Replace the gas valve or the control board.
Err 115 Low central heating water pressure
Check the pressure switch calibration
pressure
- when the pressure drops below 0.6 bar
must appear FILL;
- when the pressure rises above 1.5 bar
must disappear FILL.
If the pressure switch is not calibrated
correctly, it must be replaced.
Check that there are no water leaks from
the central heating system.
If the system has a leak, it must be repaired.
Err 116 Low central heating water pressure
Check the pressure switch calibration
pressure
- when the pressure drops below 0.6 bar
must appear FILL;
- when the pressure rises above 1.5 bar
must disappear FILL.
If the pressure switch is not calibrated
correctly, it must be replaced.
Check that there are no water leaks from
the central heating system.
If the system has a leak, it must be repaired.