Daikin E103~E105

Alarm Logic	E103 Compressor operating current is high (Electronic type OC) E105 Compressor operating current is high (Micro computer type OC)
Possible Causes	E103 Single phase operation due to faulty contact Compressor magnetic contactor / Compressor wires / Compressor terminal Compressor locked / Compressor thermal protector CTP activated Faulty / PT/CT board (EC5) / Faulty controller (CPU and I/O board) Wrong initial set up of PT/CT board (Jumper wire)(Single or Dual power supply, 10HP or 5HP) E105 Single phase operation due to faulty contact Compressor magnetic contactor / Compressor wires / Compressor terminal Compressor locked / Faulty PT/CT board / CPU board failure Incorrect initial setting of controller (Single or Dual power supply, 10HP or 5HP)
Trouble Shooting	If PT/CT board is replaced. Check power setting Single or Dual Check horsepower setting 10HP or 5HP (refer to jumper check table) Remove possible cause (listed below) of overload or starting error of the compressor. High differential pressure when unit is starting up / Liquid refrigerant / Excessive oil / Overcharge refrigerant / Compressor motor coil failure / Compressor motor shaft failure
Controller Action	E103 Restart after 3 minutes (continuous restart) E105 Restart after 3 minutes (continuous restart)