Daikin MD5 - Fault Resetting; Flashing Red Led; Red LED; History

Fault Resetting
The MD5 can be congured to automatically reset certain faults.
Refer to parameter Group 31: Automatic Reset on page 33.
WARNING
If an external source for start command is selected and it is
active, the MD5 may start immediately after fault reset.
Flashing Red Led
To reset the drive for faults indicated by a ashing red LED:
• Turn off the power for 5 minutes.
Red LED
To reset the drive for faults indicated by a red LED (on, not
ashing), correct the problem and do one of the following:
• From the control panel, press RESET
• Turn off the power for 5 minutes.
Depending on the value of 1604, FAULT RESET SELECT, the
following could also be used to reset the drive:
• Digital input
• Serial communication
When the fault has been corrected, the motor can be started.
History
For reference, the last three fault codes are stored into
parameters 0401, 0412, 0413. For the most recent fault
(identied by parameter 0401), the drive stores additional
data (in parameters 0402…0411) to aid in troubleshooting a
problem. For example, parameter 0404 stores the motor speed
at the time of the fault.
To clear the fault history (all of the Group 04, Fault History
parameters):
1. Using the control panel in Parameters mode, select
parameter 0401.
2. Press EDIT.
3. Press UP and Down simultaneously.
4. Press SAVE.
Correcting alarms
The recommended corrective action for alarms is:
• Determine if the Alarm requires any corrective action
(action is not always required).
• Use Alarm listing below to nd and address the root
cause of the problem.
Alarm Listing
The following table lists the alarms by code number and describes each.
Table 56: Alarms by Code Numbers
Alarm Code Display Description
2001 OVERCURRENT
Current limiting controller is active. Check for and correct:
• Excessive motor load.
• Insufcient acceleration time (parameters 2202 ACCELER TIME 1).
• Faulty motor, motor cables or connections.
2002 OVERVOLTAGE
Over voltage controller is active. Check for and correct:
• Static or transient overvoltages in the input power supply.
• Insufcient deceleration time (parameters 2203 DECELER TIME 1).
2003 UNDERVOLTAGE
Under voltage controller is active. Check for and correct:
• Undervoltage on mains.
2004 DIR LOCK
The change in direction being attempted is not allowed. Either:
• Do not attempt to change the direction of motor rotation, or
2008 PANEL LOSS
Panel communication is lost and either:
• Drive is in local control mode (the control panel displays HAND or OFF), or
• Drive is in remote control mode (AUTO) and is parameterized to accept start/stop, direction or reference from the
control panel.
To correct check:
• Communication lines and connections
• Parameters in Groups 10 START/STOP/DIR and 11: REFERENCE SELECT (if drive operation is AUTO).
2009 DEVICE OVERTEMP
Drive heatsink is hot. This alarm warns that a DEVICE OVERTEMP fault may be near.
R1…R4 & R7/R8: 100 °C (212 °F) R5/R6: 110 °C (230 °F)
Check for and correct:
• Fan failure.
• Obstructions in the air ow.
• Dirt or dust coating on the heat sink.
• Excessive ambient temperature.
• Excessive motor load.
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