Operating instructions

DELUXE FOOD WARMER
20
P/N 1010678 Rev. G 08/08
TROUBLESHOOTING (continued)
Problem Possible Cause Corrective Action
“ERR” appears on the
Control Display

Programming and or SHO and H2O values
were adjusted/changed improperly
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Reset the Control Board as described in
the Programming section of this manual.
See Fault Codes.
Unit heats but there is
little or no steam
produced
and/or
The product requires
more steaming than
usual.
Water Line Valve is closed
(DFW/DFWT/DFWF-200/250).
Check that the Water Line Valve is open.
Filter Strainer and/or Spray Tube is
restricted.
Check and clean the Filter Strainer
and Spray Tube as described in the
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Quick Disconnect is not fully engaged at the
rear of the unit or is damaged
(DFW/DFWT/DFWF-200/250).
Remove and re-engage the Quick
Disconnect firmly until it clicks into place.
Replace if damaged.
Low or no water pressure in the water line
(DFW/DFWT/DFWF-200/250).
Remove the Quick Disconnect Insert
from the rear of the unit. While hold-
ing over an empty cup, press the white
plastic tip. Strong, steady water flow
should be noted. If so, re-engage firmly
into unit. If not present or pressure is
low, contact your maintenance person or
plumber.
Improper water pressure to unit
(DFW/DFWT/DFWF-200/250).
Verify that a Water Pressure Regulator is
installed and set to 20–25 psi.
Unit is not being cleaned properly (daily/
monthly).
Clean the unit daily and monthly as
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this manual.
Programming and/or SHO, H2O values were
adjusted/changed improperly

Reprogram the SHO and H2O values as
described in the Programming section of
this manual.
Insufficient or excessive calcium/mineral
deposits on the Generator surface.
Verify that a thin layer of calcium/mineral
deposits is present on the Generator
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section of this manual.
Generator surface is bare. The Generator surface must have a
thin coating of calcium/mineral depos-
its for proper steaming. Refer to the
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The Water Pump’s rubber hoses are pinched
or kinked (DFW/DFWT-100/150).
Straighten and reposition the rubber
hoses.
Top Cover Gasket is worn and/or cover is out
of adjustment.
If noticeable steam escapes around the
Cover, replace the gasket and/or adjust

section of this manual.
Generator Diffuser is missing. Install Generator Diffuser or replace if
missing.
Generator surface temperature is too low. Verify that the Generator surface
temperature is 380°F–420°F
(193°C–215°C).