CONTROL ELECTRONICS, INC.

P.O. BOX 330, BRANDAMORE, PA 19316 (610) 942-3190 Fax: (610) 942-3672

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Symptom	Cause	Check or Try
#1 No Display and/or Backlighting No Power Light	No Power Defective Display	Check Power Circuit Breaker and Wiring ON/OFF Switch On Main Circuit Board Ribbon Cable Not Secure
#2 Keypad Does Not Respond	Ribbon Cable Lightning or Power Surge	Check Ribbon Cable RESET meter
#3 4-20 mA. Output Not Functioning, Reads Max all the time Output Not Same As Display	Defective Wiring Defective Output Lightning Damage   Not Scaled Correctly	Check Wiring and Polarity Disconnect Output wires and Check 4-20 Output With Current Meter - If OK Receiver Or Wiring Is Problem Replace Q1 (2N3904) and U6 (LM324IC) On Main Circuit Board - PC533 or Q1/Q2 (2N3904) and U1 (LM324) on PC570 Go To Programming, 'SCALE ANALOG/4-20ma OUTPUT' and 'TEST ANALOG OUTPUT'
#4 Display Does Not Change Or Update	Processor Crash Lightning or Power Surge	RESET Meter
#5 Display Says 'HELLO... Meter Reset ...'	Processor Crash Lightning or Power Surge	RESET Meter
#6 Pass Code Lockout	Forgot Pass Code Wrong Code Code Corrupted	Call Factory For Alternate Code (610) 942-3190