EZT-570S User Manual
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10.1 Alarm Codes and Troubleshooting
Some of the procedures may require access to live circuitry. Dangerous accidental
contact with line voltage is possible. Only qualified service personnel should be
allowed to perform these procedures. Potentially lethal voltages are present inside
the unit.
Alarm Monitor Description Corrective
Action
“Input”
ALARM
User alarm is on for
“input”
listed. Allow process value to return
within set point limits, change alarm set point values or disable alarm.
BOILER OVERTEMP
Boiler exceeded maximum operating temperature. Check water
supply and water level. Verify low water float operation. Reset high
temperature safety on boiler.
BOILER LOW WATER
Boiler water level low. Check water supply pressure. Check low float
operation. Check operation of fill level float and water supply
solenoid if applicable. Check and replace filters if necessary.
CHAMBER HI LIMIT
Chamber high limit safety tripped. Limit must be manually reset or
power cycled to chamber to reset. Verify proper air flow and
operation of air circulators in chamber. Reduce set point. Do not
attempt to operate above chamber design limits.
Communications read error. Check
communication cable.
Communication wiring between HMI and PLC faulty or not properly
connected. If alarm will not clear, check wiring. Exit EZT-570S
application and verify that COM1 serial port is set to RS485.
If intermittent alarm (can be cleared and returns at random intervals),
then remote PC communicating too fast with EZT-570S. Reduce rate
at which PC sends commands to the EZT-570S or reduce number of
communication connections.
Random alarms when communications are being used are
not a sign of a hardware problem. It indicates that the EZT-
570S is being loaded down with excess work. The purpose
of the EZT is to control the chamber. Maintain a reasonable
level of interface activity in order to keep your chamber
running at an optimum condition.
Intermittent alarms do not affect the operation of the
chamber or shut down the chamber. However, data logging
may be affected depending upon the logging rate selected.
No audible alert is associated with this alarm.
DEHUMID SYSTEM FAULT
Optional dehumidifier system fault. Check manufacturer’s manual
provided with the chamber for troubleshooting and diagnostic
information.
Email Error! Check cable or server
down.
Indicates that the EZT-570S was unable to send an alarm message
through the mail server. Verify that the EZT-570S is properly
connected to the network and that the email server entered is valid.
This alarm does not affect chamber operations. It is an
indication only alarm. No audible alert is associated with
this alarm.
Summary of Contents for EZT-570S
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