Hearth & Home Technologies 21M-ACC Manuale Utente

Page  2

7039-131F

September 1, 2008

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With proper installation, operation, and maintenance your woodstove 

will provide years of trouble-free service. If you do experience a prob-

lem, this troubleshooting guide will assist a qualified service person in 

the diagnosis of a problem and the corrective action to be taken. 

Can’t get fire started 

Excessive smoke or spillage 

Burns too slowly 

Smolders, sizzles

Not enough kindling/paper or no 

kindling/paper

Use dry kindling, more paper. Arrange kindling & wood 

for air movement.

Not enough air for fire to ignite

Check for restricted cap/shroud
Open outside air kit (if installed).
Check for flue blockage.
Pre-warm flue before starting fire (refer to starting fire 

section).
Check for adequate vent height (refer to chimney 

assembly section).
Open window below the appliance towards the wind.

Wood condition is too wet, too large

Use dry, seasoned wood (refer to wood fuel section).

Bed of coals not established before 

adding wood

Start with paper & kindling to establish bed of coals (refer 

to starting fire section).

Flue blockage such as birds’ nests or 

leaves in termination cap

Have chimney inspected for creosote and cleaned by a 

certified chimney sweep.

Down draft or negative pressure 

Competition with exhaust devices

Do not use exhaust fans during start-up (refer to negative 

pressure section).
Open window below the appliance towards the wind.

Fire burns too fast

Extremely dry or soft wood

Mix in hardwood.
Mix in less seasoned wood after fire is established (refer 

to wood fuel section).

Overdrafting

Check for correct vent height; too much vertical height 

creates overdrafting.
Check location of vent termination (refer to chimney 

requirements section).