Service manual

VSX SERIES STEAMER - TROUBLESHOOTING
Form 24618 (Rev. A, March 2000) Printed in U.S.A.
GAS MODELS ONLY
SYMPTOM POSSIBLE CAUSES
Burner won’t light. 1. Gas not “on”.
2. Low incoming gas pressure.
3. HSI not operating see “HOT SURFACE IGNITOR” in
“SERVICE PROCEDURES AND ADJUSTMENTS”.
4. Unit not properly grounded and/or polarity of incoming power
is incorrect.
5. Ignition module not receiving power. Check 2T for 24VAC
output to module.
6. Ignition module malfunctioning.
Burner won’t stay lit. 1. Gas pressure low see “GAS PRESSURE ADJUSTMENT” in
“SERVICE PROCEDURES AND ADJUSTMENTS”.
2. Check position of flame sense probe see “FLAME SENSE
PROBE” in SERVICE PROCEDURES AND
ADJUSTMENTS”.
3. Flame sense probe malfunction.
4. Ignition module malfunction.
5. Check gas orifice for obstruction.
HSI heats up but gas will not light. 1. Gas supply is off.
2. Gas valve (solenoid) malfunction.
3. Ignition module not receiving power. Check 2T for 24VAC
output to module.
4. Ignition module malfunction.