TES E- SD Operator's Manual page 26

• POWER – When the green POWER light is lighted it
indicates that the heater switch is in the ON position and
the power has been supplied to the heater. (If the green
POWER light is OFF the other lights will not light.)
• HEATING – When the second green light, the
HEATING light, is lighted it indicates that power is being
supplied to the heating elements and the unit should be
heating. If cord #2 is unplugged the heating light can still
turn ON. To assure proper heating, make sure the Dual
Circuit indicator light is ON.
• AIR FLOW – When the first red light, the AIR FLOW
light, is lighted it indicates that there is not sufficient air
flow for the heater to operate or the airflow switch is
malfunctioning and power is being shutoff to the heating
elements. When the AIR FLOW light is ON, the
HEATING light should be OFF.
• OVERTEMP – When the second red light, the
OVERTEMP light, is lighted it indicates that the either
heating element temperature, internal temperature or the
snout temperature is above the safe operating range and power being shutoff to the heating elements.
When the OVERTEMP light is ON, the HEATING light should be OFF.
If the green HEATING light is not lighted look for the following:
o If the two red lights are OFF, but the HEATING light does not come on, make sure you have power
to E-TES SD and the green POWER light is ON. Check your set points on your remote sensors. One
or more of them may be reading beyond their set point and have shut off the power to the heating
elements. Usually when this happens the display screen will flash indicating the sensor which has signaled
the unit to shutdown. Reset your activation points, disconnect or replace the sensors as needed.
o If the green HEATING light is OFF and the red AIR FLOW light is ON, the air flow through the E-
TES SD unit is not enough to allow the Air Pressure sensor to be engaged. Check the air mover
operation and check the circuit providing power to the air mover to assure proper air flow. The Air
Pressure Sensor readings can be checked or recalibrated as needed. See the Air Flow Set-up
instructions on page 13. If the AIR FLOW light does not turn off, there could be If the air mover is
operating properly, the tubing to one of the pressure ports may be restricted or disconnected. If the
tubing & barbs are clear and the tubing is in good condition, the air pressure sensor may be defective.
Contact your nearest service center for advice or assistance.
o If the green HEATING light is OFF and last red light, the OVERTEMP light is ON the heating
elements, snout temperature or internal temperature may have reached the maximum temperature and
the power to the heating elements has been cut-off to allow the unit to cool. Turn the heater switch
OFF. Make sure the air mover is ON and remove any restriction to allow more air flow to cool the E-
TES SD. When cool turn the heater switch back ON. If the unit has cooled and the OVERTEMP light
stays on, there could be a loose wire or one of the temperature sensors could be defective. Contact your
nearest service center for advice or assistance.
© Copyright Tes Drying Systems, 2014
During normal heater operation, only
the POWER light and HEATING
light will be on.
If either red light turns ON, the green
HEATING light will turn OFF.
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