49
AGUADENS
COSMOGAS
7 - USE
7.11.2 - Diagnostics “E” error fault codes
and potential solutions
Error
Error Description
Checks
Solutions
Err 30
Software error inside the
command board
Replace the command and control board.
Err 31
Software error inside the
command board
Replace the command and control board.
Err 32
Software error inside the
command board
Replace the command and control board.
Err 33
Software error inside the
command board
Replace the command and control board.
Err 34
Software error inside the
command board
Replace the command and control board.
Err 35
The supply temperature
exceeds 110°C with the
gas valve closed
Check that the electrical resistance of the two supply
sensors match the graphics in chapter 8.15.
Check that the gas valve closes the gas correctly
when the burner switches off.
If one of the two sensors does not match, the double
supply sensor must be replaced.
The gas valve must be replaced if it does not close
correctly.
Err 36
Software error inside the
command board
Replace the command and control board.
Err 37
Software error inside the
command board
Replace the command and control board.
Err 38
Software error inside the
command board
Replace the command and control board.
Err 39
Software error inside the
command board
Replace the command and control board.
Err 40
Software error inside the
command board
Replace the command and control board.
Err 41
Software error inside the
command board
Replace the command and control board.
Err 42
Software error inside the
command board
Replace the command and control board.
Err 43
Software error inside the
command board
Replace the command and control board.
Err 44
Flame detected in a
moment when it should
not be present
Replace the gas valve.
Err 45
Not applicable
Err 46
Not applicable
Err 47
Not applicable
Err 48
Software error inside the
command board
Replace the command and control board.
Err 49
Cold water inlet sensor
circuit(1007) open
Check that the electric resistance of the sensor
matches the graphics in chapter 8.15. Check the
electric cables for connection between the sensor
and the command board.
If the electric resistance does not match, replace it.
The electric circuit must be repaired if it is damaged.
Without either of the two previous cases, replace the
command and control board.
Err 50
Domestic hot water inlet
sensor 1 circuit (1001)
open
Check that the electric resistance of the sensor
matches the graphics in chapter 8.15. Check the
electric cables for connection between the sensor
and the command board.
If the electric resistance does not match, replace it.
The electric circuit must be repaired if it is damaged.
Without either of the two previous cases, replace the
command and control board.
Err 51
Domestic hot water inlet
sensor 2 circuit (1005)
open
Check that the electric resistance of the sensor
matches the graphics in chapter 8.15. Check the
electric cables for connection between the sensor
and the command board.
If the electric resistance does not match, replace it.
The electric circuit must be repaired if it is damaged.
Without either of the two previous cases, replace the
command and control board.
Err 52
Domestic hot water inlet
sensor 2 circuit (1002)
open
Check that the electric resistance of the sensor
matches the graphics in chapter 8.15. Check the
electric cables for connection between the sensor
and the command board.
If the electric resistance does not match, replace it.
The electric circuit must be repaired if it is damaged.
Without either of the two previous cases, replace the
command and control board.
