PRESSURE TROUBLESHOOTING
PRESSURE READING
POSSIBLE CAUSES
POSSIBLE SOLUTIONS
−6.7 psig
No output signal received from transducer by
the PSIO1 Module
1. Transducer plug is not plugged in.
2. Pull-down resistor shorted.*
3. Wiring error
4. Power not supplied to transducer
5. Transducer failure
0.0 psig
Transducer is not sensing any pressure
1. Service valve is not opened.
2. Valve core is not being depressed.
205 psig
Open circuit at PSIO1
PSIO1, J7 plug is not properly connected.
.
400 psig
PSIO1 is receiving a high-voltage signal
1. Wiring error
2. Transducer failure
*See Fig. 17 for terminal locations. The replacement part number is 30GT511210.
Fig. 17 — Pull-Down Resistor Terminal Locations
15
