Potterton Sirius WH 50-60-70 Installation, Operation & Maintenance Manual page 11

Fault Fault description
code
E10 Outdoor temperature sensor failure
E20 NTC output sensor failure
E50 Hot water NTC sensor failure
E110 Safety or flue gas thermostat tripped
E128 Loss of flame during operation (the
ionization current has fallen below
the limit)
E129 Minimum fan speed limit is not met
E132 lack of gas pressure / external
thermostat
E133 No gas
E151 Boiler circuit board error
E153 The reset key has been pressed
inappropriately
E154 Internal error on boiler circuit module
E160 Fan speed threshold not reached
E164 No hydraulic differential pressure
switch enabling signal
All the faults are displayed in order of importance; if several faults occur simultaneously, the first to be displayed
is the one with highest priority. After the cause of the first fault has been removed, the second one will be
displayed, and so on.
If any given fault occurs frequently, contact the authorised Service Centre.
InstructIons pErtaInInG to thE usEr
3.9 fault Warnings table
Action required
Call the authorised service centre to check the wiring and/or replace the sensor.
Call the authorised service centre to replace the sensor.
Call the authorised service centre to replace the sensor.
Press the reset key (for about 2 seconds: if this device is triggered repeatedly, call
the authorised service centre)
Call the authorised service centre to check the flame.
Call the authorised service centre.
Call the gas supplier. Call the authorised service centre.
Press the reset key (for about 2 seconds); if the fault persists, call the authorised
service centre)
Press the reset button if the display presents the (
boiler at the mains and switch it on again after 10 seconds. If the fault persists, call an
authorised service centre. Check the position of the ignition electrodes (section 18).
Press the key again (about 2 seconds)
Press and hold reset button (2 seconds approx.) then press again when warning
E153 appears
Call the authorised service centre to check the fan.
Check that the system is at the rated pressure. (Refer to the section on filling the
system). If the fault persists, call the authorised service centre.
11
) symbol, otherwise switch off the
91.7.1 - GB/IE