User Guide Revision 1.12
71
Fault Code No. OLED Message
Description
Corrective Action
20 User Parameter Default User Parameter Defaults
User Parameter default has been loaded. Press the Stop key. Three button
default – see section 5.9
21 Motor PTC over heat
Motor PTC Over Temperature The connected motor PTC device has caused the drive to trip (analog input 2
configured for PTC device).
22 Cooling Fan Fault
Cooling Fan Fault
Check and if necessary, replace the drive internal cooling fan
23 Ambient Temperature
High
Ambient Temperature too
High
The measured temperature around the drive is above the operating limit.
Ensure the drive internal cooling fan is operating
Ensure that the required space around the drive as shown in sections 3.8
thru 3.10 has been observed, and that the cooling airflow path to and from
the drive is not restricted
Increase the cooling airflow to the drive
Reduce the effective switching frequency setting in parameter P2-24
Reduce the load on the motor / drive
24 Exceed max torque
Over-Current Error
Current Monitoring Function has detected current levels above the normal
operating condition for the application.
Check mechanical load has not changed and that the load is not jammed or
stalling.
For pump application check for potential pump blockage
For fan applications check airstream to and from the fan is not restricted
25 Output torque too low
Under-Current Error
Current Monitoring Function has detected current levels below the normal
operating condition for the application.
Check for mechanical breakages causing loss of load (e.g belt break).
Check motor has not become disconnected from the drive.
26 Drive Output Fault
Drive output fault
Drive output fault, refer to your Authorised Distributor
29 STO Error Input 2
Hardware Enable Circuit Error
(Buffer Output)
Hardware Enable Circuit Fault
40 Autotune fail 1
Autotune Failed
Measured motor stator resistance varies between phases. Ensure the motor
is correctly connected and free from faults. Check the windings for correct
resistance and balance.
41 Autotune fail 2
Measured motor stator resistance is too large. Ensure the motor is correctly
connected and free from faults. Check that the power rating corresponds to
the power rating of the connected drive.
42 Autotune fail 3
Measured motor inductance is too low. Ensure the motor is correctly
connected and free from faults.
43 Autotune fail 4
Measured motor inductance is too large. Ensure the motor is correctly
connected and free from faults. Check that the power rating corresponds to
the power rating of the connected drive.
44 Autotune fail 5
Measured motor parameters are not convergent. Ensure the motor is
correctly connected and free from faults. Check that the power rating
corresponds to the power rating of the connected drive.
48 Feedback Pressure Low Low Pressure Detected by Pipe
Fill Function
Check the pump system for leaks for burst pipes.
Check the Pipe fill function has been commissioned correctly (P3-16 & P3-
17)
49 Output Phase Loss
Output (Motor) Phase Loss
One of the motor output phases is not connected to the drive.
50 Modbus Comms fault
Modbus communication error
detected
52 Option Module Fault
Fitted communication Module
Fault
Internal communication to the inserted Communications Option Module has
been lost. Check the module is correctly inserted
53 IO Card Comms fault
IO card comms trip
Internal communication to the inserted I/O Option Module has been lost.
Check the module is correctly inserted
54 BACnet Comms fault
BACnet comms loss trip
A valid BACnet telegram has not been received within the watchdog time
limit set in P5-05
Check the network master / PLC is still operating
Check the connection cables
Increase the value of P5-05 to a suitable level
Summary of Contents for HVAC H2
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