7 181 465 347 (01.07)36
Rectifying faults
4.5 Faults that are not displayed
4.5.1 Appliance faults
Boiler indicates P1, P2, P3 at start-up and then restarts with P1..
Check Action
1. Fuse T 1.6 A (312) defective. yes: B Turn ON the appliance.
B Change the fuse.
B Power OFF the appliance.
Start sequence not completed? ↓2.
no: ↓2.
2. The PCB control board is damaged. B Change PCB control board.
Excessive burner noise, rumbling noises
Check Action
1. Does the gas supply type match the
specifications on the appliance iden-
tification plate?
yes: ↓2.
no: B Convert appliance to correct gas type
1)
.
2. B Test gas supply pressure - OK?
1)
? yes: ↓3.
no: B Decommission appliance.
B Notify gas company.
3. Problem with flue?
B Check CO
2
level in combustion
air.
> 0,2 % CO
2
?
yes: B Check flue and repair or replace if necessary.
no: ↓4.
4. B Remove silencer, flue pipe and
mixer unit.
Is internal flue pipe/silencer dirty or
clogged or are seals defective or
incorrectly fitted?
yes: B Repair or replace components.
B Grease seal before fitting,
B Make sure it is fitted in correct position.
no: ↓5.
5. Flue gas CO
2
levels measured at
min. and max. load do not match
specified levels
1)
.
B Measure CO
2
levels.
yes: B Adjust CO
2
levels.
no: B Power OFF the appliance.
B Change the gas valve.
B Turn ON the appliance.
1) See installation instructions
To Next Page
Loading...
Need help?
General