R-Pro › Field cases › Refrigeration systems
Refrigerant shortage (low suction pressure)
Likely causes
Leak (flare joints, valve packing, weld points)
Check: Measure low-side pressure — confirm normal range for refrigerant type
What to do: Measure low-side pressure — confirm normal range for refrigerant type → Inspect all piping for leaks (electronic detector or soapy water) → Repair leak (re-flare or weld) → Evacuate system and recharge to specified amount → After charging, confirm bubbles disappear from sight glass
Natural reduction from long-term lack of inspection
Check: Inspect all piping for leaks (electronic detector or soapy water)
What to do: Inspect all piping for leaks (electronic detector or soapy water) → Repair leak (re-flare or weld) → Evacuate system and recharge to specified amount → After charging, confirm bubbles disappear from sight glass
Insufficient charge after service work
Check: Repair leak (re-flare or weld)
What to do: Repair leak (re-flare or weld) → Evacuate system and recharge to specified amount → After charging, confirm bubbles disappear from sight glass
Never add refrigerant without first repairing the leak
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
Open R-Pro →Related cases
- Aging Room Humidity Control Failure (Unable to Maintain 85~95%RH)
- Ethylene Buildup in Meal Kit/Produce Warehouse — Over-Ripening Due to Ventilation Failure
- End-Zone Temperature Rise (Uneven Cooling)
- Air Curtain Weakening
- Excessive Temperature Rise After Defrost
- Excessive Heat Load from Direct Sunlight or Lighting