IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED)
Felicity 32 error code
BMS communication fault: the inverter cannot communicate with the battery BMS.
Likely causes
- BMS communication cable loose, damaged or wired to the wrong pins
- Wrong BMS protocol or baud rate selected in the inverter
- Battery DIP address or master/slave setting incorrect
- Battery BMS powered down or in protection
- Incompatible BMS firmware version
Checks to run, in order
- 1Check that the BMS communication cable is firmly and correctly connected at both ends
- 2Confirm the inverter is set to the battery's CAN/RS485 protocol
- 3Check the battery DIP switches and master/slave address
- 4Confirm the battery is powered on and not in protection
- 5Check the BMS and inverter firmware versions
Fixes
- Reseat or replace the communication cable
- Select the correct battery protocol, then restart the inverter
- Correct the DIP address and wake the battery
- If the cable and settings are correct, update firmware only with distributor guidance
When to escalate
If communication does not return with a known-good cable and the correct protocol, escalate to the distributor with the battery model and firmware version.
Fix it with the right tools
Check the system around the fault before replacing parts: load, battery bank, PV string and commissioning settings. If you need a second opinion, send the code and your inverter model to our team.
Before you open the inverter
- Isolate both the AC and DC sides, then confirm the display is dead before touching terminals.
- Use insulated tools and one hand where possible. DC arcs do not self-extinguish like AC.
- If you see burnt terminals, swollen cells, leaking electrolyte or a burning smell, stop and escalate instead of resetting the fault.
Questions installers ask
What does Felicity 32 mean?
BMS communication fault: the inverter cannot communicate with the battery BMS.
How do I fix Felicity 32?
Reseat or replace the communication cable Select the correct battery protocol, then restart the inverter Correct the DIP address and wake the battery If the cable and settings are correct, update firmware only with distributor guidance
When should I escalate Felicity 32?
If communication does not return with a known-good cable and the correct protocol, escalate to the distributor with the battery model and firmware version.
Can I reset Felicity 32 myself?
Only after isolating the AC and DC sides and running the checks above. If Felicity 32 returns immediately, stop resetting it and escalate; a repeating fault usually points to a real circuit, battery or hardware problem.
Which models show Felicity 32?
Felicity 32 is documented for IVGM5-8K LP2G1 hybrid inverters (fault code list, solid fault LED). Confirm the code on your own unit's display or manual before ordering parts.
More Felicity error codes
- Felicity 04Low cell voltage / over-discharge protection.
- Felicity 05PV over-current fault: the PV input current exceeded the inverter's PV input limit.
- Felicity 18PV short-circuit fault on the PV input; in the warning list the same number means battery under-voltage alarm.
- Felicity 19Battery open-circuit alarm: the inverter no longer detects a battery on its terminals.
- Felicity 20Battery SOC low alarm: the battery's state of charge has fallen to the low-SOC warning threshold.
- Felicity 21BMS communication alarm: abnormal communication between battery and inverter in non-SOC mode.
Guidance reviewed 17 October 2026 by the Mishka Energy installer team. Error codes vary by brand, model family and firmware; confirm against the manufacturer manual.
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