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TM 9-4120-367-14
TM 07592B-14/1
4.17 LOW SUCTION PRESSURE.
a.
c.
e.
Other indications:
1. Unit stops on low pressure cutout.
2. Frosted evaporator coil.
Outside air temperature below 0°F (-18°C) jumper LPCO.
Is pressure normal?
Unit is operational.
Check evaporator airflow (paragraph 4.3).
1. Check air filter.
2. Check mist eliminator.
Repair or replace.
Unit is operational.
Solenoid valve L2 not closing.
Repair or replace.
b.
Low refrigerant charge.
Leak test, repair, and add refrigerant.
Is pressure normal?
Unit is operational.
d.
4-49/(4-50 blank)
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