Desa VVDR24 - Manual (Page 16)

www.desatech.com 124183-01B 16
TROUBLEShOOTING
WARNING: Turn off log set and let cool before servicing. Only a
qualified service person should service and repair log set.
Note: All troubleshooting items are listed in order of operation.
POSSIBLE CAUSE
1. Poor fuel quality
2. Fireplace venting system
not drafting properly
3. Excessive flame impinge-
ment or blockage
4. Improper fuel/air mixture
5. Excessive gas supply/pres-
sure
1. Passage of air/gas across
irregular surfaces
1. Incorrect gas supply or
pressure
2. Blocked burner orifice or
burner manifold ports
3. Improper burner orifice
size
1. Ignitor electrode not con-
nected to ignitor cable
2. Ignitor cable pinched or
wet
3. Bad ground on piezo
ignitor
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode broken
7. Ignitor electrode positioned
wrong
REMEDY
1. Contact local natural or
propane/LP gas company
2. Adjust damper wide open
and/or have fireplace and
venting professionally
cleaned and checked
3. Separate the logs to allow
more flame passage
4. Remove any foreign items
from the flame pattern and/
or check for proper orifice
sizing
5. Preheat flue in very cold
weather
1. Relieve any tight bends or
kinks in gas supply line
1. Check for proper gas supply
pressure
2. Free burner orifice and
manifold ports of any burrs,
paint, or other blockage
3. Verify proper burner orifice
sizing (see Figure 2, page 6)
1. Reconnect ignitor cable
2. Free ignitor cable if pinched
by any metal or tubing.
Keep ignitor cable dry
3. Scrape away paint on brack-
et for better contact with
ground on piezo ignitor
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace electrode
7. Reposition electrode
OBSERVED PROBLEM
Log set is smoking/sooting
excessively
(Note: It is natural and unavoid-
able for vented gas log sets
to produce moderate levels
of carbon (soot) where flames
contact the logs. This is es-
pecially true with propane/LP
gas.)
Burner is excessively noisy
(Note: The movement and
combustion of gas will cre-
ate low, unavoidable levels
of noise.)
Burner flame is too low or
too high
When ignitor button is pressed,
there is no spark at pilot
(GA9050A-1 Only)