Fault Code Causes And Possible Solutions - Greenheck DC Installation, Operation And Maintenance Manual

Fault Code Causes and Possible Solutions

Code Fault Description
0 No Fault Fan is operating as
expected
1 Modbus Inconsistent Modbus
Timeout RTU communication
between control and
drive resulting in
incorrect fan operation
2 NOT USED
3 Motor Over Internal motor
Temperature temperature exceeds
maximum value
resulting in reduced fan
speed or shutdown
4 Drive Over Internal VFD
Temperature temperature exceeds
maximum value
resulting in reduced fan
speed or shutdown
5 Bus Over Internal VFD voltage is
Voltage higher than expected
resulting in fan
shutdown
6 Bus Under Internal VFD voltage is
Voltage lower than expected
resulting in fan
shutdown
7 Phase Over Current is higher than
Current expected on at least
one phase of supply
power resulting in fan
shutdown
8 Microcontroller Microcontroller
High Temp temperature exceeds
maximum value
resulting in reduced fan
speed or shutdown
9 Overspeed Motor speed is
Fault greater than maximum
allowable speed
resulting in reduced fan
speed or shutdown
26 Overhead Ceiling Fans
Possible Cause(s)
-
1. Loose CAT-5e cable connections
2. Unshielded or damaged CAT-5e cables
and RJ45 splitters
3. Incorrect network biasing settings
4. Incorrect low voltage wiring on euro
connector
5. Incorrect supply power applied to VFD
6. Supply power phase imbalance
Ambient temperature too high at the ceiling
Ambient temperature too high at the ceiling
Incorrect supply voltage
1. Incorrect supply voltage
2. Rapid power-cycling at circuit breaker
1. Incorrect supply power
2. Supply power phase imbalance
Ambient temperature too high at the ceiling
1. Incorrect blade count and/or fan size
selected in control
2. Wind gusts in building
Solution
-
1. Verify that all CAT-5e cable connections
are fully seated and secure
2. Replace cables with the provided
networking components (green shielded
CAT-5e cables and black shielded 3-way
RJ45 splitters) or components that
comply with specifications on page 15
3. Refer to Fan Networking instructions on
pages 16-18
4. Refer to Fan Networking instructions on
pages 16-18
5. Verify that supply voltage is within +/-
10% of the VFD's rated voltage
6. Verify that current is consistent across all
phases of supply power
Allow motor to cool before increasing speed
or restarting fan
Allow VFD to cool before increasing speed
or restarting fan
Verify that supply voltage is within +/- 10%
of the VFD's rated voltage
1. Verify that supply voltage is within +/-
10% of the drive's rated voltage
2. After turning power off, wait 30-60
seconds before turning power back on
1. Verify that supply power meets all power
quality requirements on page 14 and that
supply voltage is within +/- 10% of the
drive's rated voltage
2. Verify that current is consistent across all
phases of supply power
Allow VFD to cool before increasing speed
or restarting fan
1. Set fan size and blade count to match
physical product using instructions in the
control manual
2. Close overhead doors, etc. or relocate fan
®