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VHX SERIES STEAMER - TROUBLESHOOTING
SYMPTOM POSSIBLE CAUSES
F24700 (October 2001)
Page 65 of 68
Steam output low or slow cooking. 1. Cooking Compartment.
A. Blocked steam injector ports. (Open door, press door
switch button and verify good steam flow into
compartment).
B. Steam solenoid valve not fully opening or blocked.
C. Steam intake shut-off valve closed or out of adjustment.
See "INTAKE SHUT-OFF VALVE ADJUSTMENT (STEAM
FLOW)" in "SERVICE PROCEDURES AND
ADJUSTMENTS".
2. Boiler Base.
A. Cycling pressure switch malfunction or needs adjustment.
B. Steam header line (supply) blockage.
C. Heavy amount of condensate in the pressure controls
steam supply line.
D. Pressure relief valve leaking.
E. Steam supply lines leaking badly.
Steamer leaks water. 1. Loose water, steam or drain line connections (top or base).
2. Heat exchanger gasket not sealing.
3. Leak at gauge glass.
Boiler water level too high. 1. Fill solenoid does not shut off.
2. Lime scale build-up (moist) on High level probe (open circuit).
3. Water level control malfunction.
Boiler does not fill. 1. Water supply not on.
2. Fill solenoid not opening or plugged.
3. Water level control malfunction.
Burner won’t light. 1. Gas not on.
2. Power/reset switch assembly malfunction.
3. Boiler not filling - check fill solenoid for power, clogging or
malfunction.
4. Air pressure switch:
A. Not mounted in true vertical position.
B. Incorrect pressure setting.
C. Malfunctioning switch.
5. Ignition module not receiving power.
6. Steamer not properly grounded and/or polarity of incoming
power is incorrect on spark ignition systems.
7. Ignition module malfunction.
8. Gas valve malfunction.
9. Water too "pure" for probes to properly conduct electricity.
10. Cycling pressure switch open or set too high. Steamer is
cycling on high limit.
11. High limit pressure switch open and not re-setting
(malfunction).
12. Water level control malfunction.
13. Aux. water level control malfunction.