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PW Series Installation Guide
LED Blink Codes
Commissioning
(PWxxxBP only)
Maintenance
(PWxxxBP only)
Z202882-0X
Page 4 of 4
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LED Color
Solid Green
Normal operation.
Flashing Green
Low > High; use port swap jumper or bidirectional mode.
Solid Red
Differential pressure is too high; select a higher pressure range.
Flashing Red
Gauge pressure over sensor range; reduce line pressure or replace with a higher range device.
Alternating Green/Red Flash
Sensor input is below sensor range. Verify that the sensor is connected correctly.
1. Close C and D.
2. Open B (null).
3. Open D (bleed or purge).
4. Slowly open A to bleed air from line.
5. Close B, then fully open A.
6. Slowly open C to bleed air from line.
7. Close D, then fully open C.
1. Bleed or purge: see Commissioning step.
2. Equalize pressure: open B.
3. Isolate sensors: close A and C.
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Status
Valve positions: All closed
B
D
A
C
Valve positions: All open
A
D
C
B
Valve positions: Normal operation
B
D
C
A
TM
1219
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