Watlow CPC400 - Manual (Page 154)

Chapter 6: Troubleshooting and Reconfiguring CPC400 Series User’s Guide
140 Watlow Anafaze Doc. 0600-2900-2000
CAUTION! Before trying to troubleshoot a problem by replac-
ing your controller with another one, first check
the installation. If you have shorted sensor inputs
to high voltage lines or a transformer is shorted
out, and you replace the controller, you will risk
damage to the new controller.
If you are certain the installation is correct, you can try re-
placing the controller. If the second unit works correctly,
then the problem is specific to the controller you replaced.
Returning a Unit
Before returning a controller, contact your supplier or call
Watlow Anafaze at (831) 724-3800 for technical support.
Controllers purchased as part of a piece of equipment must
be serviced or returned through the equipment manufac-
turer. Equipment manufacturers and authorized distribu-
tors should call customer service at Watlow Anafaze to
obtain a return materials authorization (RMA) number.
Shipments without an RMA will not be accepted. Other us-
ers should contact their suppliers for instructions on re-
turning products for repair.
Troubleshooting the Controller
A problem may be indicated by one or more of several types
of symptoms:
• A process alarm
• A failed sensor alarm
• A system alarm
• Unexpected or undesired behavior
The following sections list symptoms in each of these cate-
gories and suggest possible causes and corrective actions.