Daikin ECORICH EHU2504 - Chapter 13. TROUBLESHOOTING; 13.1 Alarm Causes and Corrective Actions


59
PIM00504
Chapter 13.  TROUBLESHOOTING
13.1 Alarm Causes and Corrective Actions
Alarm
Code
Name Cause Corrective Action
E10
Output device error
The protective function of
the output device has been
actuated.
Short circuit of the
device output
Check the connection.
Motor control error
• Adjust the relief valve setting to
the running pressure + 0.5 MPa.
• If there is a large hydraulic load
due to deterioration of the oil,
change the oil.
Controller failure Replace the controller.
Motor coil short circuit Replace the motor or motor pump.
Cooling fan system
failure
• Replace the cooling fan.
• Replace the fuse.
E11
Overcurrent
Overcurrent protection by
the software has been
actuated.
Short circuit of the
device output
Check the connection.
Motor control error Same as E10
Controller failure Replace the controller.
Motor coil short circuit Replace the motor or motor pump.
E12
Overspeed
The motor speed has
exceeded 120% of the
maximum speed.
Overshoot due to
sudden acceleration
Adjust the control gain to moderate
the acceleration/deceleration
response.
Motor control error Same as E10
E15
Insufficient voltage
The main circuit voltage
has dropped.
Controller failure Replace the controller.
Low power supply
voltage
Check the power supply voltage in
the monitor mode [n12: Main circuit
voltage], and bring the voltage
within the stipulation.
E16
Overvoltage
The main circuit voltage
became excessive.
Controller failure Replace the controller.
High power supply
voltage
Check the power supply voltage in
the monitor mode [n12: Main circuit
voltage], and bring the voltage
within the stipulation.
E17
Motor electronic thermal
relay error
Overload protection
triggered by the electronic
thermal relay has been
actuated.
The load torque is
larger than usual due to
wear of the pump, for
example.
Replace the pump or motor pump.
The motor magnets
have demagnetized and
the current has
increased.
Replace the motor or motor pump.