www.desatech.com
115043-01C
13
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 impingement
or blockage
4. Improper fuel/air mixture
5. Excessive gas supply/pres-
sure
1. Passage of air/gas across ir-
regular 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
OBSERVED PROBLEM
Log set is smoking/sooting ex-
cessively (
Note:
It is natural and
unavoidable for vented gas log
sets to produce moderate levels
of carbon (soot) where flames
contact the logs.
Burner is excessively noisy
(
Note:
The movement and com-
bustion of gas will create 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 Only)
REMEDY
1. Contact local natural or pro-
pane/LP gas company
2. Adjust damper wide open and/or
have fireplace and venting pro-
fessionally 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 mani-
fold 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 bracket
for better contact with ground
on piezo ignitor
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace electrode
7. Reposition electrode
