Check the wiring and circuit
breakers
Replace fuse – not covered
by warranty
Live wire conduit damaged
Temperature sensor
damaged
Thermal protection engages
Investigate reasons for boiler
overheating
Call service – fan
replacement
Inspect and clean the fan
Call service – fan
replacement
Call service – fan
replacement
Check, turn the clips tight
Blower fan working poorly
Creosote on the fan cover
Explosion or puffing in the
firebox
Chimney draft too low (below
0.40”wc)
Rebuild chimney. Consider
use of WKO exhaust fan
Chimney draft too intensive
(over .080”wc)
Wood too small or too dry
Mix with larger humidity fuel
as to increase humidity level
(should be about 15-35%)
Clogged heat exchanger
tubes
Clean the exchanger or call
service – not covered by
warranty