E301 Samsung — Sub-cooling fault / sottoraffreddamento anomalo
At a glance
- Severity
- WARNING
- Domain
- VRV_VRF_system
- Reference standard
- EN 378-2:2016, ASHRAE Standard 15
- Product / context
- High pressure protection
What it means
The sub-cooling value measured at the condenser outlet is outside the optimal range (too high or too low). Low sub-cooling indicates insufficient charge or condenser problems. High sub-cooling indicates overcharge or restrictions in the circuit.
Probable causes
- Incorrect refrigerant charge (insufficient or excessive)
- Dirty condenser reducing heat exchange
- Condenser fans running at reduced speed
- Main expansion valve not regulating properly
- Non-condensables (air) in the refrigerant circuit
Full guided diagnosis in the app
The diagnostic tree for this fault has 4 guided steps with measurements, checks and resolutions. You'll find it in HVACIQ, one of the five IndexOS apps: free, works offline.
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