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
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