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CTEK Assist for D250TS

CTEK Assist for D250TS

CTEK Assist helps you with everyday questions for your 12v/24v or EV Chargers and includes product information, a product selector tool, troubleshooting, user manuals, compatible accessories and much more.

The Error LED on my D250 is flashing — what does it mean?

When the Error LED flashes, the charger has detected a problem. It will always flash together with another LED to show what type of issue is present.

Here’s what the combinations mean:

  1. Error LED flashing + only the Power On lamp lit

The battery temperature is too high.

The D250 will not charge if the battery temperature is above 65°C.

Charging will restart automatically once the temperature drops below this level.

  1. Error LED flashing + Alternator LED and/or Solar LED lit

A connection problem has been detected.

Check all cables and terminals

Make sure all connections are secure and correctly attached

Inspect for loose, damaged, or incorrect wiring

If the issue persists after checking temperature and connections, the installation should be inspected more closely before use.

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