WRDB - GB
Maintenance
15
Maintenance*
If the probe malfunctions, proceed in the following man-
ner:
B Unscrew the probe fixing screw.
B Detach the ignition unit terminal.
B Replace the damaged part and proceed with its
assembly using the steps indicated in the previous
table, in reverse order.
Operating check*
To check the correct operation of the combustion gas
probe, proceed in the following manner:
B Remove the combustion gases evacuation pipe.
B Replace it with a pipe (approximately 50 cm long)
blocked at one end.
B The pipe must be routed vertically.
B Turn on the heater at nominal power and with the
temperature selector adjusted to maximum tempera-
ture.
In these conditions, the heater must turn off two
minutes afterwards, at most. Remove the pipe and
replace the evacuation pipe.
* These procedures must be performed by a qualified
installer.
Danger: The user must never touch the
device.
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