Potterton SIRIUS THREE FS 70 Installation Manual page 113

Display
128 128:Loss of flame in
op
130 130:Flue gas temp
too high
133 133:Safety time
exceeded
151 151:BMU internal
152 152:Parameterizatio
n
153 153:Unit locked
160 160:Fan speed
threshold
162 162:Air pressure
switch
178 178:Limit thermostat
CH1
179 179:Limit thermostat
CH2
7609493 - v11 - 18052020
Description of the er­
Probable causes
ror
Flame extinguished. The flame has gone out
Cut-off by NTC flue The flue gases are too hot. This
gas sensor for over­ may be caused by the heating body
heating. being overly clogged
The boiler has not been supplied
with gas
Ignition error (4 at­ The gas circuit has not been vented
tempts).
The power supply has been re­
versed
Internal error on heat­
The PCB is faulty
ing PCB.
General parameter
The PCB is faulty
setting error.
Appliance locked
The main PCB is faulty
manually.
The fan is not correctly connected
to the boiler
Fan operation error.
The fan is not responding correctly
(wear due to prolonged use)
The fan does not work
The flue gas differential pressure
switch has been triggered several
times over the last 24 hours
Air pressure switch
The flue gas pressure switch is not
correctly connected to the PCB
The water flow is insufficient
Safety thermostat
CC1, fault on heating There is air in the hydraulic circuit
circuit 1.
The safety thermostat is not con­
nected correctly
The water flow is insufficient
Safety thermostat
CC2, fault on heating There is air in the hydraulic circuit
circuit 2.
The safety thermostat is not con­
nected correctly
12 Troubleshooting
Check/Solution
Check that the gas inlet valve is
open and that the gas pressure is
not too low. Also check that the
combustion product discharge and
air supply pipes are not blocked
Clean the heating body
Check that the gas pipe valves are
open
Vent the gas pipe using the control
valve located on the boiler
Reverse the live-neutral polarity on
the boiler power supply terminal
block
Change the PCB
Change the PCB
Check that the rotary button on the
display is not locked in the pressed
down position
Change the main PCB
Check that fan's control and supply
outlets are correctly connected to
the fan
Switch off the boiler and let it rest
for several minutes to allow the fan
to cool down
Replace the fan
Use a pressure gauge to check
that the pressure difference be­
tween the air supply and the com­
bustion products does not exceed
600 Pa at the connections on the
concentric nozzle. If this is the
case, the pipes for the air supply
and combustion products may be
blocked or may be longer than rec­
ommended in this manual.
Check that the connectors on the
PCB (X7) and on the flue gas pres­
sure switch are correctly connec­
ted.
Check that the hydraulic circuit cir­
culating pump is correctly operat­
ing.
Manually vent the hydraulic circuit
Check that the safety thermostat is
correctly connected to the boiler
PCB
Check that the hydraulic circuit cir­
culating pump is correctly operat­
ing.
Manually vent the hydraulic circuit
Check that the safety thermostat is
correctly connected to the boiler
PCB
113