Dometic • Electrical and Power

Dometic MCA1215

Official technical documentation and workshop diagnostics for PerfectCharge.

Technical Specifications

Operating Voltage100 … 240 V AC / 12V DC / 24V DC
Dimensions Cutout238 × 179 × 63 mm

Master Troubleshooting & Diagnostics Matrix

Error Code / IndicatorSymptom / MeaningPossible CauseStep-by-Step DIY FixSuggested Actions
Red, slowly flashing
Battery undervoltage or battery overload
Battery voltage is too low or battery is overloaded.
Check the battery, and switch the charger off and back on. Contact an authorised service agent if this doesn't resolve it.
DIY Check / Tech Fallback
Red, slowly flashing
Defective battery
The connected battery is damaged or defective.
Replace the battery.
DIY Safe
Red, slowly flashing
Overheating
Internal temperature is too high due to restricted ventilation or high ambient temperature.
Improve ventilation around the charger or battery, make sure no vents are covered, and reduce the ambient temperature if needed.
DIY Safe
Red, permanently lit
Short circuit or reversed polarity
Polarity of battery connection is reversed or a short circuit exists.
Connect the charger with the correct polarity, clear the short circuit, and check whether the fuse has tripped, replacing it if needed.
DIY Safe
Red, double flash
Fan fault
Cooling fan is blocked, dirty, or damaged.
Inspect the fan for damage or dirt. If it's actually faulty, have a specialist or authorised workshop carry out repairs.
DIY Check / Tech Fallback
Red, slow double flash
The starter battery connection is faulty
Short circuit at the starter battery connection.
Check the starter battery connection for a short circuit.
DIY Safe