all blue lights flashing on battery

[martynenever]

Hi Im new to this game, ive bought a second hand for parts carrera crossfire. Hhen i connected the battery on my Carrera crossfire all the blue lights started flashing, but when stand alone on the bench and i press the power button all the blue lights are steady, any ideas please?
many thanks Martyn

 

[Nealh]

If lights are steady when off the bike then one would suspect a comm's fault or fault with the controller .
Carrera HESC systems are notorious for unreliability and had you asked the forum whether to buy the bike in the first place then a big NO would have been the answer.

 

[martynenever]

is there anything in particular within the comms I should look at, one thing I did notice was there is nothing connected to the small juliet plug

 

[matthewslack]

Maybe go secret shopping at your local Halfords to see what the unoccupied connector might be for.

Comms issues are of two types: a wiring issue or a faulty component issue. The first you can fix, the second, probably not.

All you can do is examine in detail every cable and connector, including areas not easily visible, and make sure nothing is the slightest bit iffy. Not wet, not loose, no cable damage, nice clean well fitting individual terminals everywhere, continuity from end to end of every wire. If that does not resolve it, then there is not much hope.

If the internals of a component are the problem, replacing the component is the only route. Working out which component? I can't help you on this bike, but the torque sensor does get mentioned quite often.

Good luck.

 

[saneagle]

is there anything in particular within the comms I should look at, one thing I did notice was there is nothing connected to the small juliet plug

I think it's more likely that you have a dead short on the battery wires. I would start by doing a MOSFET test: Measure the resistance between each motor phase wire and the positive battery connection, then repeat for the negative one to get two sets of three results. Each set of 3 should be the same as each other and roughly in the range 3K to 24K. You can pick up the motor phase connections on the motor connector behind the left side chainstay if you can't get it at the controller end.

 

[cyclebuddy]

the battery on my Carrera crossfire all the blue lights started flashing

Having just looked, there's nothing in either battery fault finding guide - for both Phylion and STL Carrera Crossfire batteries - that causes that (one or more LEDs may flash to indicate certain faults, but not all together) so my money would too be on a catastrophic error like a dead short as SE suggested.

 

[Nealh]

Testing is the way forward on wiring/controller.
Blue solid lights on the battery are just a SOC indicator and Blus strobing lights indicating a system fault.
The joys of buying used untested/tried bikes probably why the seller decided to sell it.