6
5
60T - 280T
COSMOGAS
16 - USE
Err 67
Grounding error
Make sure the appliance is correctly grounded.
Restore correct appliance grounding.
Err 68
Watchdog communica-
tion error
Replace the command and control board
Err 72
Supply sensor open
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 73
Return sensor open
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 76
D.H.W. sensor open
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 80
Supply sensor in short
circuit
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 81
Return sensor in short
circuit
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 84
D.H.W. sensor in short
circuit
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 86
Flue exhaust sensor in
short circuit
Make sure the sensor electrical resistance matches
with the graphic in section 17.14.
If the sensor does not match, it must be replaced.
Err 87
RESET key error
RESET key pressed too many times in 60 seconds
Err 93
Appliance selection error Check the 3000 parameters list (section 19)
Err 107 Software error inside
command board
Replace the command and control board
Err 108 Software error inside
command board
Replace the command and control board
Err 109 Error burner 2,3 or 4
When burner 1 (MASTER) goes in a general error,
will stops all others burner generating an Err 109
Resolve the error to burner 1 (MASTER)
Err 110 Flapper valve not open
error
A - Check for and, if necessary, remove any obstruc-
tions in the air intake and flue exhaust ducts;
B - Check the flapper valve (part 31 fig 3-2)
Err 111
Flapper valve not closed
error
Check the flapper valve (part 31 fig 3-2)
Err 112 Flapper inlet error
Make sure parameter 3005 is set to 0 or 4
If parameter 3005 is 0 or 4, replace the command
board.
Err 113 Software error inside
command board
Replace the command and control board
Err 114
Water flow rate too low
Check the flow rate to the burner (parameter 1062),
it must be greater than parameter 3035.
A - Increase the water flow rate to the system;
B - Check for and, if necessary, remove any obstruc-
tions from the system.
Err 115 Master board error
Reset via parameter 3013.
Err 116 (*) Multiple burner commu-
nication failure
A - BUS communication interrupted
B - A burner is not powered
A - Check the BUS connection.
B - Restore power to all the burners
NO CONN
Microprocessor locked
up
A - Make sure that the pressure measuring device
wires are not short circuiting
B - Make sure that the supply measuring device
wires are not short circuiting
C - Check display wires are connected to the burner
1 (MASTER)
A - If it is not short circuiting, replace the pressure
measuring device (or disconnect it via menu 3000).
B - If it is not short circuiting, replace the supply
measuring device (or disconnect it via menu 3000).
C - If the display is not connected to burner 1 (MAS-
TER) shows “NO CONN”.
D - If it is none of the above cases, replace the
control board and/or the display.
* This error stops all the burners