ℹ
info Ctek
Status Flashing Light
The charger has entered energy save mode if the charger isn't connected to a battery in 2 minutes.
? What Causes This
Not being attached to a battery for more than two minutes.
ⓘ What This Means
Connect the charger to a battery within 2 minutes of disconnecting it from power.
Source: page 14 of the official manual
From the manual
This error code appears in:
Ctek Mxs 5 0 Battery Charger