7 181 465 347 (01.07)
16
Rectifying faults
4.3
How to use the fault tables
The procedure is explained using the fault code
EA as an example:
The table heading shows the fault code and a general
description of the fault.
In the example shown, you are instructed to note the
current settings before going any further. If you can see
the flame (answer to question is “yes”) you move on to
Step 5. (
↓
5.). The question asked in Step 5 is “Is there
a problem with the flue”. The flue must then be checked.
If the answer to the first question (“Is burner flame visi-
ble?”) was“no””, then you go to and answer Question 2,
“Is the gas cock turned on?”. If the gas cock is turned
off, it must be turned on and the appliance reset. To do
so, you press the
button.
Restart the appliance
and
run through a complete heat-demand cycle until the
appliance switches off.
If the fault is now cured, the appliance will revert to nor-
mal operation and the fault-finding process is complete.
Now simply re-check the setting of the two temperature
controls.
If the fault EA recurs
during
the heat-demand cycle, it
will be shown on the display again. In that case continue
the fault finding procedure from Step 3 (thermal cut-out
in gas cock) as described above.
If a different fault code is displayed after the heat-
demand cycle, find the appropriate section of the fault
finding table and work through the procedure described
step by step.
E A
and
flashing.
Flame not detected
Check
Action
1.
Is burner flame visible?
yes:
↓
5.
no:
↓
2.
2.
Is the gas cock turned on?
yes:
↓
3.
no:
B
Turn on the gas cock.
B
Press
, does appliance restart???
EA?
↓
3.
3.
Did the thermal security of the gas
cock lock out?
yes:
B
...
no:
↓
...
4.
...
5.
Is there a problem with the flue?
B
Check CO
2
level in combustion
air.
> 0,2 % CO
2
?
yes:
B
Check the flue.
no:
↓
....
...
...
Summary of Contents for ZBR 8-35 ICS1
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