Bunn Fast Cup Series Service & Repair Manual page 64

LEFT PANEL LEFT PANEL
Step 9: Monitor the voltage and water pressure
(service screen) simultaneously.
Use the example as a reference guide.
Example: Water PSI
-29.0
10
20
30
40
50
60
70
Purge Valve Opens for .5 Sec.
80
90
100
110
120
Purge Valve Opens for .5 Sec.
No voltage change - Check wiring harness
for loose connection before replacing Water
Pressure Sensor.
PART RELATES TO THE FOLLOWING SYMPTOMS
• Active Notice - E-xxx: Currently no error or event
code for Water Inline Pressure Sensor
208VAC 2 WIRE + GND
SINGLE PHASE
56640.0000A 08/19 ©2019 BUNN-O-MATIC CORPORATION
SERVICE
Signal D/C Voltage
4.9
4.2
3.8
3.7
3.6
3.4
3.3
3.1
3.0
2.8
2.6
2.4
2.2
OPTIONAL
9
4
64
WATER
PRESSURE
TRANSDUCER