545
Thermo King
Warning

Battery Charger Output Voltage Exceeded Limit

The battery charger output voltage exceeded the maximum safety limit.

Possible causes

  • Internal charger regulator failure
  • Sudden battery disconnection while charging
  • Incorrect battery type configuration
  • Charger voltage sensor failure

Recommended actions

  • Measure output voltage with a calibrated multimeter
  • Ensure battery cables are secure
  • Check controller settings (Lead-acid vs AGM)
  • Replace charger if voltage exceeds 15V-16V on nominal 12V

Can't find your code? Talk to an expert

$150

One-on-one phone session with a Low Temp refrigeration tech. Emergency temporary assistance only.

Have a question? Ask the community

Thousands of refrigeration mechanics read and answer for free. Post your case in under 1 minute.

Need a professional diagnosis?

Low Temp Service — refrigeration experts in Florida.

Contact us