Section 7 - Troubleshooting Guide
Problem Solution
1. Unit will not turn on.
a. Check all electrical connections.
b. Check rear panel fuses.
c. Unit requires service, contact our
customer service department.
2. Unit turns on but the target
a. Check that you have entered a
plate will not get hot.
will setpoint above the ambient
temperature.
b. Verify that the controller is set to its
factory default settings.
c. Unit requires service, contact our
customer service department.
d. Unit has been operated outside of
operating range. Safety cutoff switch
has disabled heater. Unit should be
sent back to factory for reset and safety
check.
3. Controller display shows “Error” a. Unit requires service, contact our
and the target plate will not get customer service department.
hot or cold.
4. Target plate temperature will
a. Verify that the controller is set to its
not stabilize to within ±0.5°F of factory default settings.
the setpoint temperature.
b. Unit requires service, contact our
customer service department.
5. Controller has no output.
a. Controller may be in STANDBY mode.
Pressing buttons has No effect.
Hold down the
key continuously
TUNE blinks on the display.
until “TUNE”
stops blinking.
6. Controller has no output.
a. Controller may be in LOCK mode.
Controller does not Respond
Hold down the
key continuously
to any keypresses.
until “Ac.Cd”
is displayed. Change to a menu level
other than level 1 and exit the menu
selection mode by pressing the
key
once.
Troubleshooting Guide
7
7-1