13
P/N 1010678 Rev. K 08/12
Problem
Possible Cause
Corrective Action
Steam Generator’s surface becomes
flooded (fills with excess water).
Insufficient pre-heat time.
Remove excess water from the Generator surface
and allow the unit 30 minutes of pre-heat time.
The Green Momementary Switch is pressed for lon-
ger than 1 second.
Follow the “one in twenty” rule. Refer to the
Operation section of this manual.
Water Pressure Regulator is not installed (DFW/
DFWT/DFWF-200/250).
Verify that a Water Pressure Regulator is installed
and set to 20–25 psi. Adjust accordingly.
Water pressure is too high (DFW/DFWT/DFWF-
200/250).
Verify that a Water Pressure Regulator is installed
and set to 20–25 psi. Adjust accordingly.
Programming and/or SHO and H2O values were
adjusted or changed improperly
(Timer Models
only)
.
Reprogram the Control Board to the recommended
settings. Refer to the Programing section of this
manual.
Solenoid Valve is leaking due to debris trapped inside
the plunger (DFW/DFWT/DFWF-200/250).
Attempt to flush the debris out of the valve by
rapidly operating the unit on a number of single
shot cycles and then letting it rest. If the unit still
leaks, disassemble the Solenoid Valve and clean out
the plunger. Reassemble the unit and test again. If
a leak is still present, replace the Solenoid Valve.
Contact your maintenance person or Authorized
Service Agency.
The Water Pump and/or its Check Valves are clogged
or damaged.
Verify that the filter is present in the water tank.
Disassemble and clean pump. Replace Check valves
if damaged.
Improper Daily/Monthly cleaning.
Follow the Daily/Monthly cleaning procedures
carefully.
The Generator surface temperature is too low.
Verify that the Generator surface temperature is
between 380°F–420°F (193°C–215° C).
Insufficient or excessive calcium/mineral deposits on
the Generator surface.
Verify that a thin layer of calcium/mineral deposits
is present on the Generator surface. Refer to the
Maintenance section of this manual.
There is no pre-strainer or filter on the water line
(DFW/DFWT/DFWF-200/250).
The unit was supplied with a strainer. If missing,
install strainer.
Solenoid Valve is installed incorrectly (DFW/DFWT/
DFWF-200/250).
If the Solenoid Valve was replaced, verify that the
:”IN” and “OUT” labels on the valve correspond to
the water flow.
TROUBLESHOOTING (continued)
