Watlow Series SD31 PID with Optional Countdown Timer - Manual (Page 64)

Wa t l o w S e r i e s S D 3 1
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6 2
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C h a p t e r 1 0 F e a t u r e s
Indication Probable Cause(s) Corrective Action
[Er;In] Input error The sensor may be improperly wired.
Sensor wiring may be reversed, shorted or
open.
The input may be set to the wrong sensor
or the controller may not be calibrated.
Calibration may have been corrupted.
Check sensor connections.
Check sensor connections and sensor
wiring.
Change Sensor Type [`Sen] (Setup Page) to
match the sensor hardware.
Restore factory calibration.
Press the Infinity Key ˆ to reset latched
input errors.
[Er;Ab] Ambient temperature error Ambient temperature may be too hot or
too cold.
Calibration may be corrupted.
Verify that the temperature surrounding
the controller is -18 to 65°C (0 to 149°F).
Restore factory calibration.
Cycle power.
[Er;CS] Checksum error Settings may have changed unexpectedly. Press the Infinity Key ˆ to clear the er-
ror.
Cycle power.
Verify settings. If error message persists,
contact the factory.
Error Messages