Below you will find information on the most common fault codes we see on our current direct drive fans. Click on any of the links in the VFD Readout column to take you to the full article for that fault code.
| Alarm Code |
Definition
|
Description
|
Symptoms
|
Possible Causes
|
Solutions
|
|
| VFD Readout |
Touchscreen | |||||
|
COMM ERROR
|
Drive Freewheel Stopping
|
Communication Has Not Been Established With The Drive
|
The Fan Shuts Down And/Or Will Not Start
|
CAT5 Cable Is Not To Spec (CAT5e Shielded Stranded Minimum) |
Verify Cable, Replace Out Of Spec Cable | |
| CAT5e Cable Is Damaged | Replace Damaged CAT5e | |||||
| CAT5e Cable Is Too Long (200' Maximum On Touchpad) |
Shorten CAT5e Run To Appropriate Length | |||||
| (Network Only) Cat5e Is Not Daisy Chained | Rewire Network To Have One Beginning (Controller) And One End (Last Control Panel) |
|||||
| CAT5e Cable Ran Next To High Voltage | Run CAT5 Away From High Voltage | |||||
| The Control Source Was Unplugged | Plug Control Source In | |||||
| The Drive Is Not Properly Grounded | Properly Ground The Drive | |||||
| CAT5e Is Coiled | Ensure There Are No Coils In The CAT5 Run | |||||
|
1003
|
No Line Power
|
The Drive Is Detecting No Power On The Output
|
The Fan Shuts Down And/Or Will Not Start
|
Breaker Is Off | Turn The Breaker On | |
| Loose/Missing Wire On Drive Input | Correct Drive Input Wiring Issues | |||||
| Internal Plugs Dislodged (Likely Due To Customer Dismantling Drive) |
Pull Front Half Of Drive Off, Reattach Plugs, Reassemble |
|||||
| Blown Fuse In Control Panel | Replace Fuse | |||||
| Incoming Voltage Is Too Low (Ex. 208V On A 480V Drive) |
Provide Appropriate Voltage To Drive | |||||
| Bad Drive | Replace Drive | |||||
|
1018
|
STO Active
|
The STO Terminal Is Open (Used For Fire Alarm)
|
The Fan Shuts Down And/Or Will Not Start
|
Orange/Orange White In CAT5e Not Shorted Together |
Short Orange/Orange White Wires In CAT5e Together |
|
| Fire Alarm Has Been Activated | Rectify Fire Alarm Issues | |||||
| CAT5 cable Is Not To Spec (CAT5e Shielded Stranded Minimum) |
Verify Cable, Replace Out Of Spec Cable | |||||
| CAT5e Cable Is Damaged | Replace Damaged CAT5e | |||||
| Wires Are Not Present On STO And P24 Terminals |
Land Orange and Orange White Wires On STO and P24 Terminals |
|||||
| Orange/Orange White Tied Into Other Drive Types |
Separate Orange CAT5 Pair By Drive Type | |||||
| Other Wiring Issue | Contact MacroAir Technical Support | |||||
|
3
|
Configuration Fault
|
The VFD Has Detected A Configuration Error
|
The Fan Shuts Down And/Or Will Not Start
|
VFD Parameters Not Set Correctly | Contact MacroAir Technical Support | |
| Wrong Touchscreen Being Used | Use Correct Touchscreen | |||||
| VFD Is Damaged | Replace VFD | |||||
|
5
|
Modbus Coms Fault
|
The VFD Lost Communication With The Control Source (Touchpad, Controller 30, Etc.)
|
The Fan Shuts Down And/Or Will Not Start
|
CAT5 Cable Is Not To Spec (CAT5e Shielded Stranded Minimum) |
Verify Cable, Replace Out Of Spec Cable |
|
| CAT5e Cable Is Damaged | Replace Damaged CAT5e | |||||
| CAT5e Cable Is Too Long (200' Maximum On Touchpad) |
Shorten CAT5e Run To Appropriate Length | |||||
| (Network Only) Cat5e Is Not Daisy Chained | Rewire Network To Have One Beginning (Controller) And One End (Last Control Panel) |
|||||
| CAT5e Cable Ran Next To High Voltage | Run CAT5 Away From High Voltage | |||||
| The Control Source Was Unplugged | Plug Control Source In | |||||
| The Drive Is Not Properly Grounded | Properly Ground The Drive | |||||
| CAT5e Is Coiled | Ensure There Are No Coils In The CAT5 Run | |||||
|
7
|
Current Limit
|
The Drive Has Reached The Output Current Limit
|
The Fan Will Stop Accelerating
|
Blade Size Is Not Correctly Programmed | Ensure Blade Size Is Programmed Correctly | |
| Autotune Was Not Performed, Or Autotune Was Performed On Warm Motor | Perform Autotune After Fan Has Not Run For At Least An Hour | |||||
| Motor Is Miswired (Likely High/Low Voltage Mixup) |
Correct Motor Wiring | |||||
| Incorrect Blades Installed On Fan | Install The Correct Blades On The Fan | |||||
| Motor Cable Is Not To Spec | Replace With Proper Motor Cable | |||||
| Motor Cable Is Too Long | Shorten Motor Cable To Acceptable Length | |||||
|
The Fan Will Shut Down
|
Motor Cable Is Damaged/Shorted | Replace Motor Cable | ||||
| Motor Is Damaged/Shorted | Replace Motor | |||||
| VFD Parameters Not Set Correctly | Contact MacroAir Technical Support | |||||
|
9
|
Overcurrent
|
The Output Current (A) Is Too High
|
The Fan Shuts Down And/Or Will Not Start
|
Motor Is Miswired (Likely High/Low Voltage Mixup) |
Correct Motor Wiring | |
| Incorrect Blades Installed On Fan | Install The Correct Blades On The Fan | |||||
| Motor Cable Is Not To Spec | Replace With Proper Motor Cable | |||||
| Motor Cable Is Too Long | Shorten Motor Cable To Acceptable Length | |||||
| Motor Cable Is Damaged/Shorted | Replace Motor Cable | |||||
| Motor Is Damaged/Shorted | Replace Motor | |||||
| VFD Parameters Not Set Correctly | Contact MacroAir Technical Support | |||||
|
16
|
Drive Overheating
|
The VFD Has Exceeded The Rated Temperature
|
The Fan Shuts Down And/Or Will Not Start
|
High Ambient Temperature | Only Operate VFD Below Rated Temperature (40 C) | |
| VFD Control Panel Mounted Next To Heat Source |
Relocate VFD Control Panel | |||||
| Motor Is Overloading | Refer To OLF (17) Section | |||||
|
17
|
Motor Overload
|
The Motor Current(A) Exceeded The Programmed Max Output Current Of The VFD
|
The Fan Will Shut Off At High Speed
|
Blade Size Is Not Correctly Programmed | Ensure Blade Size Is Programmed Correctly | |
| Autotune Was Not Performed, Or Autotune Was Performed On Warm Motor | Perform Autotune After Fan Has Not Run For At Least An Hour | |||||
| Motor Is Miswired (Likely High/Low Voltage Mixup) |
Correct Motor Wiring | |||||
| Incorrect Blades Installed On Fan | Install The Correct Blades On The Fan | |||||
|
The Fan Shakes Or Vibrates
|
Motor Cable Is Not To Spec | Replace With Proper Motor Cable | ||||
| Motor Cable Is Too Long | Shorten Motor Cable To Acceptable Length | |||||
| Motor Cable Is Damaged/Shorted | Replace Motor Cable | |||||
| Motor Is Damaged/Shorted | Replace Motor | |||||
| VFD Parameters Not Set Correctly | Contact MacroAir Technical Support | |||||
| OSF | 19 | Mains Overvoltage | The VFD Input Voltage Exceeded The Drive's Rating | The Fan Shuts Down And/Or Will Not Start | Input Voltage Is Too High | Ensure Input Voltage Is Below VFD Max Rating |
|
20
|
1 Motor Output Phase Loss
|
The VFD Detected At Least One Wire Missing From The Drive Output
|
The Fan Shuts Down And/Or Will Not Start
|
A Wire Is Loose/Missing On Drive Output
|
Ensure That All 3 Motor Leads Are Present On The Drive Output | |
| Ensure That All 3 Motor Leads On The Drive Output Are Secure | ||||||
| Damaged/Incorrect Motor Cable | Replace Motor Cable | |||||
| Motor Is Not Wired Correctly | Correct Motor Wiring | |||||
|
22
|
Supply Undervoltage
|
The VFD Input Voltage Is Too Low
|
The Fan Shuts Down And/Or Will Not Start
|
Momentary Input Power Loss | Reset Fault/Cycle Power To Drive |
|
| A Wire Is Loose/Missing On Drive Input | Ensure All Incoming Power Legs Are Secure On The Drive | |||||
| Input Voltage Is Too Low | Ensure Input Voltage Is Sufficient For VFD Model |
|||||
|
23
|
Motor Short Circuit
|
The VFD Detected A Short On The Output Side
|
The Fan Shuts Down And/Or Will Not Start
|
Incorrect Motor Wiring | Correct Motor Wiring | |
| Damaged/Incorrect Motor Cable | Replace Motor Cable | |||||
| Incorrect Wiring On VFD Output | Correct VFD Wiring | |||||
|
The Fan Runs Erratically
|
Motor/Drive System Not Properly Grounded |
Correct Grounding Issues | ||||
| VFD Is Damaged | Replace VFD | |||||
| SCF3 | 32 | Ground Short Circuit | The VFD Detected A Ground Fault | The Fan Shuts Down And/Or Will Not Start | Motor/Drive System Not Properly Grounded | Correct Grounding Issues |
|
44
|
Torque/Current Limit
|
The Motor Current(A) Exceeded The Programmed Max Output Current Of The VFD
|
The Fan Will Shut Off At High Speed
|
VFD Parameters Not Set Correctly | Contact MacroAir Technical Support | |
| Blade Size Is Not Correctly Programmed | Ensure Blade Size Is Programmed Correctly | |||||
| Autotune Was Not Performed, Or Autotune Was Performed On Warm Motor | Perform Autotune After Fan Has Not Run For At Least An Hour | |||||
| Motor Is Miswired (Likely High/Low Voltage Mixup) |
Correct Motor Wiring | |||||
|
The Fan Shakes Or Vibrates
|
Incorrect Blades Installed On Fan | Install The Correct Blades On The Fan | ||||
| Motor Cable Is Not To Spec | Replace With Proper Motor Cable | |||||
| Motor Cable Is Too Long | Shorten Motor Cable To Acceptable Length | |||||
| Motor Cable Is Damaged/Shorted | Replace Motor Cable | |||||
| Motor Is Damaged/Shorted | Replace Motor | |||||
|
54
|
IGBT Overheating
|
The VFD Detected The IGBT Temperature Exceeding The Drive Specifications
|
The Fan Shuts Down And/Or Will Not Start
|
Incorrect Motor Wiring | Correct Motor Wiring | |
| Damaged/Incorrect Motor Cable | Replace Motor Cable | |||||
| Incorrect Wiring On VFD Output | Correct VFD Wiring | |||||
|
The Fan Runs Erratically
|
Motor/Drive System Not Properly Grounded |
Correct Grounding Issues | ||||
| VFD Is Damaged | Replace VFD | |||||
| Incorrect VFD Motor Information Parameter Settings |
Contact MacroAir Technical Support | |||||
|
69
|
Internal CPU
|
The VFD Internal Microprocessor Detected A Fault
|
The Fan Shuts Down And/Or Will Not Start
|
Incorrect CAT5 | Replace CAT5 With CAT5e Shielded Stranded Or Greater | |
| Incorrect Motor Wiring | Correct Motor Wiring | |||||
| Damaged/Incorrect Motor Cable | Replace Motor Cable | |||||
|
The Fan Runs Erratically
|
Incorrect Wiring On VFD Output | Correct VFD Wiring | ||||
| Motor/Drive System Not Properly Grounded |
Correct Grounding Issues | |||||
| VFD Is Damaged | Replace VFD | |||||
| Incorrect VFD Motor Information Parameter Settings |
Contact MacroAir Technical Support | |||||
|
105
|
Angle Error
|
The VFD Detected An Error During Phase-Shift Angle Measurement
|
The Fan Will Not Complete An Autotune
|
Incorrect Motor Wiring | Correct Motor Wiring | |
| Damaged/Incorrect Motor Cable | Replace Motor Cable | |||||
| Incorrect Wiring On VFD Output | Correct VFD Wiring | |||||
| Motor/Drive System Not Properly Grounded | Correct Grounding Issues | |||||
| Incorrect VFD Motor Information Parameter Settings | Correct VFD Settings | |||||
|
107
|
Safety Fault
|
The VFD Detected A Configuration Or Timeout Error
|
The Fan Shuts Down And/Or Will Not Start
|
Orange/Orange White In CAT5e Not Shorted Together |
Short Orange/Orange White Wires In CAT5e Together |
|
| Fire Alarm Has Been Activated | Rectify Fire Alarm Issues | |||||
| CAT5 Cable Is Not To Spec (CAT5e Shielded Stranded Minimum) |
Verify Cable, Replace Out Of Spec Cable | |||||
| CAT5e Cable Is Damaged | Replace damaged CAT5e | |||||
| Wires Are Not Present On STO and P24 Terminals |
Land Orange And Orange White Wires On STO And P24 Terminals |
|||||
| Orange/Orange White Tied Into Other Drive Types |
Separate Orange CAT5 Pair By Drive Type | |||||
| Other Wiring Issue | Contact MacroAir Technical Support | |||||
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