DeLonghi WIR1 - Manual (Page 18)

18
OBSERVED PROBLEM POSSIBLE CAUSE REMEDY
Burner does not light
after ODS/pilot is lit 1. Burner orifice is clogged
2. Inlet gas pressure is too low 1. Clean burner orifice (see clean-
ing and maintenance, pag 14)
or replace the burner
2. Contact local natural gas com-
pany
Dalayed ignition of burn-
er 1. Manifold pressure is too low
2. Burner orifice is clogged 1. Contact local natural gas com-
pany
2. Clean burner orifice (see clean-
ing and maintenance, pag 14)
or replace the burner
Burner backfiring during
combustion 1. Burner orifice is clogged or damaged
2. Burner damaged
3. Gas regulator defective 1. Clean burner orifice (see clean-
ing and maintenance, pag 14)
or replace the burner
2. Replace burner
3. Replace gas regulator
Burner plaque(s) does not
glow 1. Plaque damaged
2. Control knob set between locked
positions
3. Inlet gas pressure is too low
1. Replace burner
2. Turn control knob until it locks
at desired setting
3. Contact local natural gas com-
pany
Slight smoke or odor dur-
ing initial operation 1. Residues from manufacturing processes 1. Problem will stop after a few
hours of operation
Heater produces whistling
noise when burner is lit 1. turning control knob to HIGH position
when burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner ori-
fice
1. Turn control knob to LOW
position and let warm up for a
minute
2. Operate burner until air is
removed from line. Have gas
line checked by local natural
gas company
3. Observe minimum installation
clearances (see figure 4, page 7
4. Clean burner (see cleaning and
maintenance, page 14) or
replace the burner
White powder residue
forming with burner box
or on adjacent walls or
furniture 1. When heated, vapors from furniture
polish, wax, carpet cleaners, etc., turn
into white powder residue
1. Turn heater off when using fur-
niture polish, wax, carpet
cleaner or similar products
Note: All troubleshooting items
are listed in order of operation
WARNING: only a qualified
service person should serv-
ice and repair heater
CAUTION: never use
wire,needle, or similar object
to clean ODS/pilot. This can
damage ODS/pilot unit
WIR 2 26-06-2003 18:21 Pagina 18