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7.0 Troubleshooting FAQs
Q The Relay Driver does not appear to be working. No LEDs are lit. What's
wrong?
A Check the Relay Driver power connection. The Relay Driver requires at least
8V to operate.
Q After the Relay Driver is programmed, all the LEDs flash red. Is something
wrong?
A No. The red flashing LEDs indicate that the program memory has been
updated. The Relay Driver must be reset by removing power for a few seconds.
Reconnect power and verify correct start-up.
Q Are there any fuses or user-serviceable parts inside the Relay Driver?
A No. The Relay Driver has electronic protections and there are no adjustments
or serviceable parts inside.
Q The Relay Driver and PC are not communicating over the serial port. What's
wrong?
A Make sure that the Relay Driver is powered with a battery or power supply.
The Relay Driver cannot communicate without power. Verify that no other
programs or managers are using the same serial port. Check the serial cable. If
possible, try another cable. Verify that the serial cable is not a Null Modem or
cross-over cable.(if using a cable other than the one supplied). Shut down and
restart the PC. Reattempt connection. Try another PC
Q The channel(s) are not turning on/off when they should.
A Check the control variable value with an external meter if possible (voltage
and current values). Check the Meter Bus cables and connections. If no Time
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