While TGC uses different codes across revisions, the most common BC-90-1H error codes are:

If you have recently purchased a TGC BC-90-1H battery charger or are responsible for maintaining a fleet of industrial or automotive batteries, you know that having the on hand is not a luxury—it is a necessity. This automatic, microprocessor-controlled charger is known for its robust performance across 6V, 12V, and 24V systems, but without the correct documentation, you might be missing out on its full potential.

Simply turning on the hot water tap will trigger the heater to start. Safety and Maintenance