Nature's Comfort NCB-80 Installation And Operating Manual - page 28
Page 28 of 34
Trouble Shooting
Problem
Cause
Solution
Boiler does not come up to
temperature.
Green or soft wood is being used,
Wind blowing under boiler
Use properly seasoned hard wood
Take one or two inches of hard board
insulation and place under boiler between
legs then add non-combustible spacers
between ground to hold up insulation
The boiler is at temperature and is
steaming
Poor water circulation (excess fittings,
too small of pipe, improper installation)
Change to a larger pump, use sweeping
bends instead of 90’s, use minimum 1” pipe.
Poor burn time
Green or soft wood is being used,
Damper is open too far, too much
demand on unit
Use dry, seasoned hard wood
Adjust damper to highest position, lower
temperature set points
Boiler is up to temperature but little
to no heat in house
Poor circulation (A simple test can be
done to determine if this is so: touch
the pex line leaving and returning to
boiler. There should be little or no
temperature difference)
Heat exchanger plugged
Improperly designed installation
Not enough insulation in building
Change to a larger pump
Clean and be sure to use boiler treatment!
Reduce number of 90’s & T’s used
Add insulation to structure
Boiler over heats
Air leak
Damper open to far
Poor circulation
Water is low in boiler
Aqua-stat malfunction
Make sure loading door is sealed & adjust if
necessary, make sure all openings are shut.
Adjust damper
Larger pump, reduce # of fittings
Add water to keep full
Replace Aqua-stat
Fire does not stay lit
Not leaving enough coals in burn area
No air flow
Blower failed
Leave more coals in burn area, load sooner.
Check the area behind the ash pan to make
sure there is no ash build up that would block
blower air way, replace blower
Good wood but does not burn. Only
smolders
Blower air way or chimney is plugged
clean air way or chimney
Boiler up to temperature but no heat
in house
Circulation pump failed
Remove screw on top of pump to see if shaft
is spinning. If not, see maintenance section
for servicing pump
Boiler water getting rusty
Not enough or no boiler treatment
Have your water tested. Boiler treatment is
required for warranty to be valid! See
warranty.
Solenoid opens damper but blower
won’t come on
Blower failed
Replace blower
Blower turns on but solenoid does
not open
Loose electrical connection
Solenoid failed
Turn power off and check all wire
connections
Replace solenoid
Water leaking from boiler
Condensation from first start-up of
boiler
Condensation from wet wood
Condensation from running below 150F
Wait 24 hours to dry out
Burn properly seasoned hard wood
Adjust aquastat to 165-180 with a 15 degree
differential