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START
Make sure the gas
supply is turned ON
and check if other
gas appliances are
operating (e.g. fire,
cooker). If the
property has a
prepayment meter
ensure it has
sufficient credit.
NO
If no gas, consult
your supplier.
Is there electricity to the
boiler ? Is the display lit ?
Check electrical supply to
boiler is switched on.
NO
YES
Is the Burner Flame
showing.
Burner Flame
(Indicates burner
is on)
Boiler operating
satisfactorily.
NO
YES
YES
YES
Is the E and R symbol
illuminated or flashing ?
YES
Press the Reset Button
(e.g. press and hold for 5 seconds)
If it does
not reset
CONTACT YOUR
INSTALLER OR
SERVICE ENGINEER.
Reset
Symbol
Is the Spanner symbol
illuminated or flashing ?
YES
Spanner
Symbol
Error
Code
Flame
Failure
OR
PN-0000638
R
R
R
R
Boiler
Temperature
Error
Symbol
Central
Heating
Reset
Button
R
Reset
bar
0
1
2
3
4
Min
M
ax
M
a
x
Min
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