910 / 1904
HVAC
857
HVAC
(d)
Manifold gauge will show following readings if moisture enters in the cycle:
Troubleshooting chart for above condition:
Symptom
Problem
Cause / Reason
Remedy
AC system periodically Air conditioner operates Freezing of expansion Check and clean or replace
cools and then fails to normally at the beginning valve due to presence receiver dryer & expansion
cool.
but over time vacuum is of moisture.
valve which may possibly
created on low pressure
clog. Be sure to evacuate
side.
the air after finishing the
remedy so as to remove
moisture.
(e) Manifold gauge will
show following readings under compression failure of compressor:
Troubleshooting chart for above condition:
Symptom
Problem
Cause / Reason
Remedy
No cooling
Pressure on low pressure Compressor defective Check and repair or replace
side is high and pressure
compressor
on high pressure side is
low