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digital controller,
nothing happens.
Digital display shows
relay and particular
zone is overheating.
Beeper not
functioning or
intermittent beeper
sound.
Press does not close
when pressing the
two, green, start
buttons
If setpoint is reached
but slightly off in
temperature.
Heater platens
overheating
Same goes if the buttons are already
pressed by overlay without
depressing button.
1. The relay on the switched side is
not opening to regulate temperature.
1. Beeper on digital control board
failed.
Did not simultaneously press the
start buttons exactly at the same
time.
Offset may need to be calibrated and
adjusted.
If the relay (depending on the year of
the model) on the coil side are
receiving 12vdc indicates the
controller is functioning properly. On
the switching side of the relay, is
there 120 vac going to the heater in
question. If there is no voltage on
the to the switching side of the relay
to the heaters, the relay is not
working properly.
traces on the controller) tighten
the nuts on the back of the
controller until button activate.
Same goes in reverse if buttons
are held down by the overlay.
1. Replace the relay.
1. Replace digital controller
board
Try pressing both buttons exactly
at the same time. This is a
anti-tiedown safety feature.
Call (800) 624-6717 ext. 129 for
instructions.
Replace relay If the controller's
heat-on LED is not lit indicating
the controller is working
properly.
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