Notes On Using The Fault Code Tables - Worcester CDi Combi N.G Service Booklet

RECTIFYING FAULTS
7.3

NOTES ON USING THE FAULT CODE TABLES

The procedure is best described with the aid of an
example:
• Work through the table from top to bottom and from
left to right.
• First make a note of the present settings and restore
them before leaving the appliance.
• Read question 1. (Check column) and depending on
the answer (yes or no) read the action required from
the relevant box and carry out the instruction given;
ignore the other answer. For example: if the burner
flame is visible, follow the instructions for yes, i.e. go
to 5.!
• "go to 5" means go to number 5., ignoring the steps
in between.
EA
and
Flame not detected
Check
1. Is a burner flame visible?
2. Is the gas cock turned on?
3. Has the thermal cut-out on the gas
cock tripped?
4. ... ...
5. ... Problem with flue?
B Check CO
level in combustion
2
air.
Is CO level above 0,2 % ?
2
Fig. 15 Example of fault code table
28
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flashing.
yes:
no:
yes:
no:
yes:
no:
yes:
no:
In this example: check the flue is clear by testing the
CO level.
2
• If the appliance is locked (reset button and the fault
indicator LED are flashing), press the reset button.
• If the fault has been rectified, the appliance will then
start up without indicating a fault and the fault
isolation procedure is complete.
• If the fault is still present after performing the reset
action and, if necessary, restarting the appliance,
move on to the next step in the fault isolation
procedure.
• If another fault code is displayed, work through the
fault code table for that code
Action
↓ 5.
↓ 2.
Ø 5.
B Open the gas cock.
B Press button
.
EA? ↓3.
...
↓ ...
Check flue.
↓ ...
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