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