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n14
PWM pump speed
percentage
n15
Fan speed (RPM/100)
n20
(not used)
n21
Last error code
n22
Second-to-last error code
n26
Calculated heating set
point (with climatic curve or
configured set)
3.8 Flue thermal fuse
Tripping of the flue gas thermal
fuse involves a safety lockout,
and requires resetting by an Au-
thorised Service Centre.
The flue thermal fuse 20, indicated in Figure
3.9, is a safety device that protects the flue
gas outlet duct, sending the boiler into safe-
ty lockout mode and switching it off.
To restore the normal operation of the boil-
er, contact the Authorised Service Centre.
Figure 3.9
USEFUL TIPS
20
- 17 -
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