Page 27 of 51
8.3 Run and fault Information and Display Meanings
Display
Two kinds of information may be displayed:
a.
Display codes Steady and not Flashing on and off.
When a code is displayed, it means that there is a heat demand (except the code 0), but the boiler is
not working, example, because the temperature is higher than the set temperature.
After cooling down, in most cases the appliance will automatically start to function again.
Codes not flashing on and off (A2 to O are not faults)
Status
Code on display
Action
Flow temperature achieved
A2
Flow temperature achieved
A3
DHW Calling Boiler off on Temperature
A4
Wait until temperature
decreases
Check cylinder control
Anti constant recycle ( hunting on & off )
A5
Wait for cooling down
Speed of the fan is too high
A6
Speed of the fan is too low
A7
Wait until the speed is OK
No call for Heat ( external control
contacts are open & not calling for heat )
O
Switch the external control to
call for heat
High limit thermostat is in a short term
(10 Sec) limit condition
C3
The condition may clear on
cooling down (else F2
condition)
Not used
C5
Wait for cooling down
b.
Codes flashing on and off
A code which is flashing on and off will show that the boiler is in a lock out position, and will not
restart automatically.
The RESET button needs to be pressed, until the flashing lock out code disappears.
Without any adjustments or repairs to the appliance, it is likely that the same lock out will happen
again: so please look at pages 33 to 39 of this booklet, on how to prevent this particular lock out.
Faults with codes flashing indication.
Status Code
on
display
Action. Read page 37
& information below
Short circuit on ionisation probe
F0
Check Probe etc
Press Reset Button
High limit thermostat condition
F2
Press Reset Button
Fan speed not correct
F4
Press Reset Button
No flame after 5 attempts
F5
Press Reset Button
Flame lift off during heat demand
F6
Press Reset Button
Flow temperature too high
E0
Press Reset Button
DHW temperature too high
E1
Press Reset Button
Return temperature too high
E2
Press Reset Button
Boiler not operational
F1
Program Fault
Not used
E5
Press Reset Button
New Parameter programmed correctly
PP
Press Reset Button
Parameter incorrectly programmed
PE
Program again
Burner control out of order
nc
Switch the mains off,
wait 5 seconds then on
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Страница 49: ...Page 49 of 51 14 4 Pipes pump S CB 150 180 Figure 6 S CB 150 S CB 180 ...