Worcester ZSBR 7-30 RD 430i system, Service Booklet

Page: 28 / 56

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28
Rectifying faults
Error EA
EA
and flashing.
During operation: flame not detected
Check Action
1. Is a burner flame visible? yes:
↓
5.
no:
↓
2.
2. Is the gas cock turned on? yes:
↓
3.
no:
B
Open the gas cock.
B
Press , restart the appliance.
EA?
↓
3.
3. Is there air in the supply pipe? yes:
B
Vent supply pipe.
B
Press , restart the appliance.
EA?
↓
4.
no:
↓
4.
4. Natural gas models:
does the building have a supply pressure
regulator? yes:
B
Check that it is fitted correctly and functioning prop-
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.
no:
↓
5.
LPG models:
is the flow rate of the gas supply to the
appliance correct? yes:
↓
5.
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” 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.
5. Is the earth connection correct? yes:
↓
6.
no:
B
Correct the electrical connection.
B
Press , restart the appliance.
EA?
↓
6.
6. Is the condensation trap blocked? yes:
B
Clean out condensation trap discharge pipe.
B
Press , restart the appliance.
EA?
↓
11.
no:
↓
7.