What does EC 60 mean?
Compressor not starting or running intermittently.
Common causes
- Failed start relay
- Overload protector tripped
- Compressor windings failed
- Low refrigerant charge
- Control board not sending signal
Diagnostic & testing steps
- 1. Listen for compressor clicking (start relay issue)
- 2. Test start relay with multimeter
- 3. Test overload protector for continuity
- 4. Measure compressor winding resistance: Start 5-15 ohms, Run 2-8 ohms
- 5. Check control board output at compressor connector
- 6. If windings test OK but still no start, suspect low charge
Tools required
- Multimeter
- Clamp ammeter
- Phillips screwdriver
OEM parts & part numbers
Compressor Start Relay, Overload Protector, Start Capacitor
Part numbers: 4201460, 4201470, 4201480
Safety warning
⚠️ Sealed system repairs require EPA 608 certification. Disconnect power before testing compressor.
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