Troubleshooting Guide - Ariston 3318628 Mode D'emploi

GB
preparing the boiler for operation

Troubleshooting guide

The Zone Manager Kit is protected against the risk of breakdown by internal checks carried out by the PCB
which, if necessary, will activate a safety shutdown.
The table below shows the possible error codes, their descriptions and the recommended action to be
taken in each case:
Error
code
7 0 1 Zone 1 heating flow temperature
sensor fault
7 0 2 Zone 2 heating flow temperature
sensor fault
7 0 3 Zone 3 heating flow temperature
sensor fault
7 1 1 Zone 1 heating return tempera-
ture sensor fault
7 1 2 Zone 2 heating return tempera-
ture sensor fault
7 1 3 Zone 3 heating return tempera-
ture sensor fault
7 2 2 Zone 2 overheating
7 2 3 Zone 3 overheating
BUS BridgeNet® supply overload A "BUS supply overload" error may appear when three or more devices
4 2 0
7 5 0 Control unit not configured
50
Description
Check the connection of the sensor concerned.
Check the continuity of the sensor.
Replace the sensor if necessary.
Check for the shunt and its connection to the "ST2" terminal block on the
control unit
OR Check the maximum heating temperature setting for Zone 2 (parame-
ter 525).
Check the connection of the safety thermostat to the "ST2" terminal block
on the control unit.
Check for the shunt and its connection to the "ST3" terminal block on the
control unit
OR Check the maximum heating temperature setting for Zone 2 (parame-
ter 625).
Check the connection of the safety thermostat to the "ST3" terminal block
on the control unit.
supplying power to the BUS are connected to the system. Example:
boiler + hydraulic module + solar pump unit, etc. To avoid this risk, the
microswitch (1) on the electronic PCB of one of the connected devices
(not the boiler) must be switched from ON to OFF.
Refer to the paragraph entitled "Programming the control unit".
Recommended action
O N O N
1 2 1 2