jray3
Posts: 1552
Joined: Tue Dec 06, 2011 1:05 am
Location: Tacoma area, WA
Contact: Website

Re: Not Charging. Main Inverter Fuse blown

Tue Jun 26, 2018 10:49 pm

Today I received that pesky 20A 400V fuse under the inverter inspection cover that pops when there is a charger OR DCDC fault. It is Mitsubishi part #9499A656. Thanks go out to Concord Mitsubishi of Concord, CA for shipping it directly to me. MR BEAN is back to 100%
2012 i-SE "MR BEAN" 91,000 miles
2000 Mazda Miata EV, 78 kW, 17 kWh
1983 Grumman Kurbwatt EV,170 kW, 32 kWh
1983 Mazda RX-7 EV 43 kW 10 kWh
1971 "Karmann Eclectric" EV 240 kW 19 kWh
1965 Karmann Ghia Cabriolet

PV1
Site Moderator
Posts: 2930
Joined: Fri Apr 27, 2012 4:22 pm
Location: Pittsburgh, PA
Contact: Website

Re: Not Charging. Main Inverter Fuse blown

Wed Jun 27, 2018 10:39 am

KiEV, the main positive contactor won't engage until the condenser is at pack voltage. Since the condenser tops out 12 volts shy of pack voltage, the car errors and never connects the pack.

It appears that the condenser discharges really quickly after the flag was set, which may point to an undesired load somewhere in the system. In my experience, I usually hear a clunk 5 seconds after powering the car off, which I believe is the negative main contactor dropping out after condenser discharge is complete. This load would cause the condenser to not charge quickly enough given a fixed current source (the pre-charge resistor), so it times out before fully charging.

Lic, just to verify, is the fuse feeding the DC-DC converter blown?
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

2017 Bolt EV LT in Orange with QC - 7/31/2017

Driving electric since 2-21-2013.

Lic
Posts: 46
Joined: Mon Dec 28, 2015 2:11 pm
Location: Canada

Re: Not Charging. Main Inverter Fuse blown

Thu Jul 12, 2018 2:09 pm

PV1 wrote:
Lic, just to verify, is the fuse feeding the DC-DC converter blown?

No. If car starts - it is working fine. It takes charge, it drives well.

Return to “Batteries and Battery Management”