Worcester GREENSTAR HE combi Series, Installation And Servicing Instructions

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7 181 465 347 (01.07)
28
Rectifying faults
EA
and flashing.
During operation: flame not detected
Check Action
1. Is the flame present? yes:
↓
6.
no:
↓
2.
2. Is the gas cock open? yes:
↓
3.
no:
B
Open the gas cock
B Press , does appliance restart???
EA?
↓
3.
3. Is there air in the supply pipe? yes: B Vent supply pipe.
B
Press , does appliance restart???
EA?
↓
4.
no:
↓
4.
4. Did the thermical security of the gas
cock lock out? yes:
B
Reset security.
B Press , does appliance restart???
EA?
↓
5.
no:
↓
5.
5. Natural gas models :
does the building have a supply pres-
sure regulator?
yes: B Check that it is fitted correctly and functioning
properly and correct if necessary.
B
Check supply pressure, inform gas company if
outside correct range.
B Press , does appliance restart???
EA?
↓
6.
no:
↓
6.
LPG models :
is the flow rate of the gas supply to
the appliance correct?
yes:
↓
6.
no:
B Is there enough gas in the supply cylinder?
B
Is there air in the supply pipe?
B Is the solenoid valve in the “meter cabinet” open-
ing?
B
Is the supply pressure OK? (if the supply pres-
sure is too high, check the pressure regulator in
the “meter cabinet” and on the LPG supply cylin-
der).
B Press , does appliance restart???
EA?
↓
6.