41
4.5.3 - ERROR CODES RELATED TO GAS PRESSURE, MBD, AM-4 and AM-5
Note: In the case that one of the terminal strip “X 11” to “X17” controlling the fans is not connected, the fan runs at max speed and
the thermal element is not switched on.
Error code Description Alarm
L1 2 Local Flow Temperature of Component 1 > 98°C no
L2 2 Temperatura locale di mandata dell’elemento 2 > 98°C no
L3 2 Temperatura locale di mandata dell’elemento 3 > 98°C no
L4 2 Temperatura locale di mandata dell’elemento 4 > 98°C no
L5 2 Temperatura locale di mandata dell’elemento 5 > 98°C no
L6 2 Temperatura locale di mandata dell’elemento 6 > 98°C no
L7 2 Temperatura locale di mandata dell’elemento 7 > 98°C no
L8 2 Temperatura locale di mandata dell’elemento 8 > 98°C no
L1 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 1 is too high no
L2 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 2 is too high no
L3 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 3 is too high no
L4 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 4 is too high no
L5 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 5 is too high no
L6 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 6 is too high no
L7 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 7 is too high no
L8 1 The difference between the Global Return Temperature and the Local Flow Temp. of thermal elements 8 is too high no
Possible Causes and Solutions
As for the above mentioned conditions, they can be due to wiring break, short circuit or failure of the NTC involved, or
over temperature of the heat module involved due to insufficient water circulation.
Error code Description Alarm
E26 The Min. Gas Pressure Switch is open (or the low water pressure optional is open) no
E90 The module AM-4 has not been detected (see par. 2.4.3) no
E91 The module AM-5 has not been detected (or the number of modules AM-5
is wrong (see par. 4.2.2) no
Error inside the MBD no
Error of Communication no
The Global Flow Temperature is too high no
To verify position dipswitches E90 page 24.
For E91,see page 25 position dipswitches
Check the water pressure into the boiler ( it must be higher than 1 bar). If necessary, reset at 3 bar.
Error code Description Alarm
E18 Global Flow Temperature > 95°C no
E19 Global Return Temperature > 95°C no
E92 All modules in error Si
Possible causes and solutions
The NTC and/or wiring of the global temperature involved is defective
Insufficient or even no circulation of water due to the obstruction of the sections or the pump stop.
4.5.4 - ERROR CODES RELATED TO GLOBAL TEMPERATURES
To Next Page
Loading...
Need help?
General