Daikin rzq100 fault code L1...Help!

[jedijono21]

Hello all, i was sent to replace a main outdoor PCB on a daikin rzq100 today. The problem was that it was diagnosed by an ex employee of my company, so i probably should have looked into it a little more before i started.
Anyway i replaced the pcb and started the unit up....The breaker tripped at the distribution board. From previous experience i've had locked compressors trip breakers so i disconnected the compressor and ran the unit up again, 20mins past with no problems. so to make sure i ran the unit up once more with the compressor connected. 5mins passed then a loud BANG came from the outdoor unit and the breaker had tripped once again
Next time i ran the unit up i was greeted with an L1 fault code.

I can't find much info on this fault code.

Has anyone had any experience with this fault code?
Any advice? its all appriciated!

[install monkey]

megger the compressor to earth to check insulation is over 1 meg,check inverter pcb

Detect malfunctions by current value during waveform output before compressor startup.




Detect malfunctions by current sensor value during synchronized operation at the time of

startup.




Detect malfunctions using an MP-PAM series capacitor overvoltage sensor.

Malfunction

Decision

Conditions




When over-current is detected at the time of waveform output before operating the

compressor




When the current sensor malfunctions during synchronized operation




When overvoltage occurs in MP-PAM




In case of IGBT malfunction




In case of faulty jumper setting

Supposed

Causes




Faulty outdoor PC board (A1P)

•

IPM failure

•

Current sensor failure

•

MP-PAM failure

•

Failure of IGBT or drive circuit