Potterton SIRIUS FS Installation & Servicing Instructions Manual page 70

7.7 FAULT CODE TABLE
Code Display Description
10
Outside temperature sensor error
20
Boiler temperature 1 sensor error
22 Water pressure 3 too low
26 Common flow temperature, sensor error
40 Return temperature 1, sensor error
47 Common return temperature, sensor
error
50 DHW temperature 1, sensor error
60 Room temperature 1, sensor error
81 LPB short-circuit or no power supply
83
LPB collision
84
BSB address collision
98
Extension module 1, error
99 Extension module 2, error
100 2 Clock time masters
110 SLT Lockout
111 Shutdown limit thermostat
119 Shutd water pressure swi
125 Maximum boiler temperature exceeded
126 DHW Charging temperature not reached
127 DHW legionella temperature not
reached
128 Loss of flame during operation
129 Wrong air supply
130 Flue gas temperature too high
132 Safety Shutdown
133
Safety time exceeded
Sirius FS
Causes / Rectification
Check connections or replace faulty outside sensor (B9). If no
outside sensor fitted save sensors (function 6200) to remove error
after 24 hours
Check connections or replace faulty heat exchanger flow tempera-
ture sensor (B2)
Water pressure is near critical level, re pressurise system to a mini-
mum of 1 bar
Check connections or replace faulty sensor located in flow pipe
work up stand section (B10)
Check connections or replace faulty heat exchanger return tempera-
ture sensor (B7)
Check connections or replace faulty sensor located in return pipe
work up stand section (B73)
Check connections or replace faulty DHW tank sensor (B3)
Check connections or replace faulty room unit (R1)
Check operation of LPB bus units and cables
Duplicate LPB address - Check all LMS14s function Para 6600
Two room units have the same allocation address - see function 40
AGU2.5 configuration error - Check parameters
AGU2.5 configuration error - Check parameters
Only PCB1 should be set as time master, check all LMS14s - see
Function 6640
Overheat protection has been activated. Allow appliance to cool
down before resetting. If problem persists, establish causes of over-
heating before resetting appliance or replacing thermal fuses and
rectify overheat devices. Also check connector X18a and all flow &
return sensors.
Heat exchanger temperatures have been exceeded. Investigate
flow speeds and controls to determine causes of temporary fault
code.
Check pressure switch operation or refill system with water
Flow temperatures have been exceeded. Boiler will continue once
temperatures have dropped below maximum allowed limits.
Check operation and heat up times for DHW
Check operation and heat up times for DHW
Ionisation current lost after successful ignition. Check gas supply
pressure, ionisation electrode and CO
The air control valve has opened when the burner is not in opera-
tion. Check the operation of the air control valve and the flue
draught does not exceed 0.2 mbar (see section 5.5.2)
Check causes of high temperatures before operating boiler. Inspect
inside of heat exchanger for dirt build up. Check CO
and max output.
Gas pressure too low or front door overheat thermostat activated.
Check incoming gas pressure and operation of overheat stat on the
screwed into the burner door.
Ignition unsuccessful after 5 ignition attempts. Check gas supply,
gas valve operation, ignition generator, lead and electrodes.
68
levels at min and max output.
2
levels at min
2
GB/IE