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4.6
Testing The Sensing Element (Continued)
Relay and LED Output Status
Relay #2 = Alarm
Tank Condition
AutoVerify = disabled
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
High Level FailSafe
On
Off
Off
Tank Empty
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
High Level FailSafe
On
On
Tank Full
On
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
Low Level FailSafe
On
On
On
Tank Empty
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
On
Off
Off
Low Level FailSafe
Tank Full
Relay and LED Output Status
Relay #2 = Fault and AutoVerify = enabled
3
4
5
6
7
8
Fault Condition
Detected
NO
C
NC
NO
C
NC
High Level FailSafe
Tank Empty
c. If the sensing element still shows resistance between
terminals of less than 10K ohms, it is possible that
moisture is present internal to the sensing element. It
may be possible to dry the sensing element until the
resistance increases to a value in excess of 10K ohms.
However this is an indication the integrity of the sensing
element has been compromised. Contact the factory for
recommendations.
A digital ohmmeter will often produce a resistance measurement
1
that is higher than the actual value.
Relay #2 = Fault
AutoVerify = disabled
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
On
Off
Off
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
On
On
Off
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
On
On
Off
3
4
5
6
7
8
NO
C
NC
NO
C
NC
Power
Relay 1
Relay 2
GREEN
RED
RED
LED
LED
LED
On
Off
Off
High Level
Failsafe only
Relay 2
Relay 1
Power
RED
RED
GREEN
LED
LED
LED
On
Flashes
Flashes
Checking the Sensing Element
Figure 4-2
25
Troubleshooting
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