Dometic • Lithium Battery

Dometic TLB100, TLB100F, TLB100S, TLB100SF, TLB120, TLB120F, TLB150, TLB150F

Official technical documentation and workshop diagnostics for TLB.

Technical Specifications

Operating Voltage12V DC

Master Troubleshooting & Diagnostics Matrix

Error Code / IndicatorSymptom / MeaningStep-by-Step DIY FixSuggested Actions
N/A
No voltage is present at the terminals and LED flashes red or is constantly lit
Possible Cause: Battery alarm or under-voltage protection triggered due to voltage dropping below 11V ± 0.1V
Connect a suitable charger to recharge the battery. If the issue remains unresolved, contact an authorised service agent.DIY Check / Tech Fallback
N/A
Blue flashing for more than 5 seconds
Possible Cause: Firmware update failure or firmware not present
Perform a firmware update. If the issue remains unresolved, contact an authorised service agent.DIY Check / Tech Fallback