The Control Techniques Commander SE Microdrive series is an AC open loop vector that provides great flexibility as well as a small footprint. Although this series is reliable you may encounter one of the HF Trip codes listed below. These codes are a result of an internal error in the drive. Most often these trip codes can be resolved by powering down and allowing the drive sit for 5 minutes before powering up again.
If the HF Fault code does not clear then your drive will likely require a repair.
Here is a list of possible Control Techniques Commander SE HF Trip Codes:
- HF01 – SOFTSTARTFAIL: Soft start relay failure detected by DSP (not applicable to SE size 5).
- If the inrush/softstart relay opens u while the drive is running or does not close correctly, the drive will trip on HF01.
- HF02 – OIFAILURE: OI trip detected at power up.
- If the drive detects an OI.AC (over-current trip on power up), then the drive will trip on HF02 and not OI.AC.
- HF03 – FANFAILED: Cooling fan not running (if fitted). No PWM detected by micro.
- If your Commander SE is fitted with a heatsink cooling fan and its fails, the drive will trip on HF03.
- HF70 – LEVEL1OVERRUN: User code level 1 overrun.
- HF71 – LEVEL2OVERRUN: User code level 2 overrun.
- HF72 – LEVEL3OVERRUN: User code level 3 overrun.
- The user interface code (control PCB microprocessor) runs on different priority levels and each task has a set time to complete its tasks. If for some reason the code cannot complete its task within the alloted time, it will trip HF70, HF71, or HF72.
- HF73 – DSPCOMMS: Communications between processor and DSP not working
- The two microprocessors talk to each other via 2 wire RS485 serial communications. If this internal serial communication link fails, then the drive will trip HF73.
- HF74 – DSPOVERRUN DSP: code overrun.
- This trip code is like HF70, 71, and 72 but with the Digital Signal Processor (DSP) on the power PCB.
- HF83 – POWERBOARD CODE: Incorrect power board code.
- The DSP reads voltage from the power PCB to determine the correct kW amount. If this voltage is different than the expected value, the drive will trip HF83.
- HF88 – WDOG: User code watchdog failure.
- HF90 – STACKOF: User code stack overflow.
- HF91 – STACKUF: User code stack underflow.
- HF92 – ILLOPCODE: User code illegal opcode.
- HF96 – ILLADDRESS: User code illegal address.
- HF98 -INTCRASH: User code interrupt crash error.
- While the user code is running, it is continuously checking that the data it is receiving is valid, and that the addresses are valid, etc. If it detects a problem, it will trip one of the 6 codes above: HF88, HF90, HF91, HF92, HF96, or HF98.
8 thoughts to “Control Techniques Commander SE HF Trip Codes”
My command was giving an error Hf 03 where by when I checked the command bottom fun was not running.
The I have replace with a new one but am still having the same error what could be the reason?
Hello, I have a same problem, can i know how you resolve it, thank you
Yes Sir, I too have HF 03 code and the fan works when connected to a battery.
We are a Data center and have over 100 of these drives in our Liebert fan coil units. Board looks good, no damage. please advise
Model SE 33400750 SE 11 T
Mi commander envia error hf73
Como se soluciona
I have same problem HF 73
For error hf 03
You should use the same kind of fan 3 wire
Orange wire is Pwm 0 -5 VOLT
My Inverter is the security code has been lost & forgotten, please send me how to do fix
i have problem HF92 can some one help me please