MY CFX3 SAYS “!ALERT – VOLTAGE LOW” EVEN THOUGH ITS PLUGGED IN. WHAT DO I DO?
Your CFX has a 3-stage battery protection system that actively monitors inbound DC voltage and will turn off the cooler if it senses low voltage. This feature is designed primarily to prevent the cooler from draining your vehicle’s starter battery and leaving you stranded while out on the road. It also prevents damage to accessory batteries. The battery protection system has three levels: we recommend High or Medium for applications where the CFX is running from your starter battery, and Low when its running from an accessory or dual battery.If your battery protection is set to a recommended setting and the CFX still won’t turn on, try setting the system to one level lower – eg from High to Med. Do not use splitters, pigtails or extensions. Each of these can create more line loss (DC voltage decreases along the length of a cable) which will cause lower voltage at the socket.
NOTE:
When electricity (current) flows from a battery, the voltage of the battery reduces. This is known as Peukert’s Law, and commonly referred to as the voltage when battery is “under load”. This is important to understand when troubleshooting voltage issues because the CFX is not using the “no load” battery voltage for the 3-stage battery protection system, but rather the voltage when the compressor is running, and battery is under load. This means that your vehicle battery may read a full 12.8V at the terminals,
This is relevant for
- Dometic CFX3 95DZ
- Dometic CFX3 75DZ
- Dometic CFX3 55IM
- Dometic CFX3 45
- Dometic CFX3 35
- Dometic CFX3 25
- Dometic CFX3 100
- CFX2 28 Electric Cooler
- CFX2 57 Electric Cooler
- CFX2 37 Electric Cooler
- CFX2 45 Electric Cooler
- CFX5 25 Electric Cooler
- CFX5 75DZ Electric Cooler
- CFX5 45 Electric Cooler
- CFX5 55IM Electric Cooler
- CFX5 35 Electric Cooler