Nature's Comfort NCB-120 Installation and operation instructions manual - page 23
Page 23 of 25
VI. Trouble Shooting
Problem
Cause
Solution
Boiler dose not come up to temperature.
Green or soft wood is being used,
Boiler is in the open were the wind
blows under boiler
Use dry, hard wood
Take one or two inches of hard board
insulation and place under boiler between legs
then add 1x10 between legs to hold up
insulation
The boiler is 180 degrees or lower and
the boiler is steaming
Poor water circulation
Change to a larger pump, ensure return line
comes in on the opposite lower end
Poor burn time
Green or soft wood is being used,
Damper is open to far
Use dry, seasoned hard wood
Adjust damper to be ¼” open at widest point
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 add a y-strainer – be sure to use
treatment!
Reduce number of 90’s & T’s used
Add insulation to structure
Boiler over heats
Air leak
Damper open to far
Water is low in boiler
Aqua-stat malfunction
Make sure loading door is sealed & adjust if
necessary, make sure ash pan is shut
Adjust damper to ¼” open @ widest point
Add water to keep full
Replace Aqua-stat
Boiler fire does not stay lit
Not leaving some coals in burn area
Ash in ash pan not clean
Leave some coals in burn area
Check the area behind the ash pan to make
sure there is no ash build up that would block
blower air way.
Good wood but does not burn. Only
smolders
Blower air way plugged
Remove blower and clean air way
Boiler up to temperature but no heat in
house
Circulation pump failed
See maintenance section on pump
Boiler water getting rusty
Not enough or no boiler treatment
Have your dealer or Nature’s Comfort test
your water. Boiler treatment is required for
warranty to be valid! See warranty.
Solenoid opens damper but blower
won’t come on
Loose wire connection
Blower burned out
Turn power off and check all wire
connections
Replace blower
Blower turns on but solenoid does not
open
Loose electrical connection
Solenoid burned out
Turn power off and check all wire
connections
Replace solenoid