What does E2 mean?
Discharge pressure exceeded operational limit — heat rejection problem.
Common causes
- Dirty condenser coil
- Fan motor failure
- Refrigerant overcharge
- Restricted condenser airflow
Diagnostic & testing steps
- 1. Measure discharge pressure
- 2. Clean condenser coil
- 3. Check condenser fan operation
- 4. Verify adequate clearance around outdoor unit (18 inches minimum)
Tools required
- Manifold gauges
- Multimeter
OEM parts & part numbers
Condenser Fan Motor, Fan Capacitor
Part numbers: 51-102686-08, 61-103108-04
Safety warning
⚠️ System may be at very high pressure. Do not loosen fittings.
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