Worcester ZWBR 7-30 R 30 HE PLUS COMBI Service Booklet page 28

Rectifying faults
Error EA
EA
and flashing.
During operation: flame not detected
Check
1. Is a burner flame visible?
2. Is the gas cock turned on?
3. Is there air in the supply pipe?
4. Natural gas models:
does the building have a supply pressure
regulator?
LPG models:
is the flow rate of the gas supply to the
appliance correct?
5. Is the earth connection correct?
6. Is the condensation trap blocked?
28
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Action
↓5.
yes:
↓2.
no:
↓3.
yes:
B Open the gas cock.
no:
B Press
, restart the appliance.
EA? ↓3.
B Vent supply pipe.
yes:
B Press
, restart the appliance.
EA? ↓4.
↓4.
no:
B Check that it is fitted correctly and functioning prop-
yes:
erly and correct if necessary.
B Check supply pressure, inform gas company if outside
correct range.
B Is correct code plug fitted?
B Press
, restart the appliance.
EA? ↓5.
↓5.
no:
↓5.
yes:
B Is there enough gas in the supply cylinder?
no:
B Is there air in the supply pipe?
B Is the solenoid valve in the "meter cabinet" opening?
B Is the supply pressure OK? (if the supply pressure is
too high, check the pressure regulator in the "meter
cabinet" and on the LPG supply cylinder)
B Press
, restart the appliance.
EA? ↓5.
↓6.
yes:
B Correct the electrical connection.
no:
B Press
, restart the appliance.
EA? ↓6.
B Clean out condensation trap discharge pipe.
yes:
B Press
, restart the appliance.
EA? ↓11.
↓7.
no:
7 181 465 347 (05.01)