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111245-01A
For more information, visit www.desatech.com
For more information, visit www.desatech.com
28
TROUBLESHOOTING
OBSERVED PROBLEM
Heater produces a whistling noise when
burner is lit
When ignitor button is pressed, there is no
spark at ODS/pilot (manual ignition mode)
When ignitor button is pressed, there is
spark at ODS/pilot but no ignition (manual
ignition mode)
ODS/pilot lights but flame goes out when
control knob is released (manual ignition
mode)
REMEDY
1. Turn control knob to LO position and
let warm up for a minute
2. Operate burner until air is removed from
line. Have gas line checked by local
natural or propane/LP gas company
3. Observe minimum installation clear-
ances (see page 8)
4. Clean burner (see Cleaning and Mainte-
nance, page 26) or replace burner orifice
1. Reconnect ignitor cable
2. Free ignitor cable if pinched by any
metal or tubing. Keep ignitor cable dry
3. Tighten nut holding piezo ignitor to base
panel of log set. Nut is located behind
base panel
4. Replace ignitor cable
5. Replace piezo ignitor
6. Replace pilot assembly
7. Replace pilot assembly
1. Turn on gas supply or open equipment
shutoff valve
2. Turn control knob to PILOT position full
counterclockwise
3. Continue holding control knob in full
counterclockwise position. Repeat
igniting operation until air is removed
4. Contact local propane/LP gas company
5. Clean ODS/pilot (see Cleaning and
Maintenance, page 26) or replace ODS/
pilot assembly
6. Replace gas regulator
1. Turn control knob fully counterclock-
wise
2. After ODS/pilot lights, hold control
knob for 30 seconds
3. Fully open equipment shutoff valve
4. A) Contact local natural or propane/LP
gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 26) or replace ODS/
pilot assembly
5. Hand tighten until snug, then tighten
1/4 turn more
6. Replace pilot assembly
7. Replace control valve
TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Turning control knob to HI position
when burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice
1. Ignitor electrode not connected to igni-
tor cable
2. Ignitor cable pinched or wet
3. Piezo ignitor nut is loose
4. Broken ignitor cable
5. Bad piezo ignitor
6. Ignitor electrode broken
7. Ignitor electrode positioned wrong
1. Gas supply turned off or equipment
shutoff valve closed
2. Control knob not in PILOT position
3. Air in gas lines when installed
4. Depleted gas supply (propane/LP only)
5. ODS/pilot is clogged
6. Gas regulator setting is not correct
1. Control knob not fully turned counter-
clockwise
2. Control knob not held long enough
3. Equipment shutoff valve not fully open
4. Pilot flame not touching thermocouple,
which allows thermocouple to cool,
causing pilot flame to go out. This prob-
lem could be caused by one or both of
the following:
A) Low gas pressure
B)
Dirty or partially clogged OD S/pilot
5. Thermocouple connection loose at con-
trol valve
6. Thermocouple damaged
7. Control valve damaged