Vanguard Heating VS24PR - Manual (Page 24)

24
103448
REMEDY
1. Press in control knob fully
2. After ODS/pilot lights, keep control
knob pressed in 30 seconds
3. Fully open manual shut-off valve
4. A) Contact local propane gas company
B) Clean ODS/pilot (see Cleaning and
Maintenance, page 23) or replace
ODS/pilot assembly
5. Hand tighten until snug, then tighten
1/4 turn more
6. Replace thermocouple
7. Replace gas control
1. Contact local propane (LP) gas company
2. Clean burner(s) (see Cleaning and
Maintenance, page 23) or replace
burner orifice(s)
3. Contact qualified service person
4. Replace burner orifice(s)
5. Put remote selectorin ON position
6. See Wiring Diagram, page 26
1. Contact local propane (LP) gas company
2. Clean burner(s) (see Cleaning and
Maintenance, page 23) or replace
burner orifice(s)
3. Contact qualified service person
1. Clean burner (see Cleaning and
Maintenance, page 23) or replace
burner orifice
2. Replace damaged burner
3. Replace gas control
1. Check burner(s) for dirt and debris. If
found, clean burner(s) (see Cleaning
and Maintenance, page 23)
2. Replace gas control
1. Problem will stop after a few hours of
operation
1. Refer to Air for Combustion and
Ventilation requirements (page 5)
OBSERVED PROBLEM
ODS/pilot lights but
flame goes out when
control knob is released
One or both burners do
not light after ODS/pilot
is lit
Delayed ignition of one
or both burners
Burner backfiring during
combustion
Yellow flame in front
burner during burner
combustion
Slight smoke or odor
during initial operation
Moisture/condensation
noticed on windows
POSSIBLE CAUSE
1. Control knob not fully pressed in
2. Control knob not pressed in long
enough
3. Manual shutoff valve not fully
open
4. Pilot flame not touching thermo-
couple, which allows thermo-
couple to cool, causing pilot
flame to go out. This problem
could be caused by one or both
of the following:
A) Low gas pressure
B) Dirty or partially clogged
ODS/pilot
5. Thermocouple connection loose
at control valve
6. Thermocouple damaged
7. Gas control damaged
1. Inlet gas pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
4. Burner orifice(s) diameter is too
small
5. Remote selector in OFF position
6. Wire disconnected from gas
control
1. Manifold pressure is too low
2. Burner orifice(s) clogged
3. Mislocated crossover tube
1. Burner orifice is clogged or
damaged
2. Damaged burner
3. Gas control defective
1. Not enough air
2. Gas control defective
1. Residues from manufacturing
processes and logs curing
1. Not enough combustion/
ventilation air
TROUBLE-
SHOOTING
Continued