Desa (V)DVF36 - Manual (Page 32)

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REMEDY
1. Replace ignitor if wire is prop-
erly connected and you have
no spark
2. Using a match, light pilot. If pi-
lot lights turn off pilot and push
piezo again. If pilot lights, an
improper gas/air mixture cause
improper lighting and a longer
purge period is recommended. If
pilot will not light, check gap at
electrode and pilot. Gap should
be 1/8" for strong spark. If elec-
trode is okay, replace pilot
3.
LP only:
Check fuel supply
and contact local propane/LP
supplier if low.
LP and Natural:
Check for
kinked or bent hoses. Consult
pipe fitter or plumber.
POSSIBLE CAUSE
1. Defective ignitor
2. Defective pilot or misaligned
electrode at pilot
3. No or low gas pressure
PROBLEM
When ignitor button is pressed,
there is no spark at pilot
TROUbLESHOOTING
Continued
REMEDY
1.
LP only:
Check fuel supply
and contact local propane/LP
supplier if low.
LP and Natural:
Check for
kinked or bent hoses. Consult
pipe fitter or plumber.
2. Repeat lighting procedure
several times to purge air from
lines. If unit will still not light,
contact a qualified service and
repair technician
3. Remove debris and dirt, in-
spect and clean other possible
obstructions
4. Replace control valve
5. Contact a qualified technician
to replace pilot line
6. Check that main power is on
and all wire connections are
made correctly to ignition
module
1. Check ignition wire connec-
tion - see Wiring Diagrams,
page 33
2. Check ground wire connection
- see Wiring Diagrams, page 33
3. Clean and adjust main burner;
check gas supply and inlet
pressure; replace ignition as-
sembly if necessary
POSSIBLE CAUSE
1. No or low gas pressure
2. Air in gas line
3. Construction debris clogging
main orifice
4. Control valve knob not
opening
5. Kinked pilot line
6. No power to unit or ignition
module/power transformer is
bad
1. Loose wiring on ignition
module
2. Poor ground to ignition
module
3. Main burner flame too low
to sense
PROBLEM
Ignitor will not spark or burner
will not light
Burner will not stay lit
ELECTRONIC IGNITION SYSTEM