2014 Phaeton 42' LH voltage drop
We have a 2014 Tiffin 42"LH Phaeton. When plugged into shore power you turn the key on and the lights dim a little and I lose 3 volts AC at the outlets. I am told that when you turn on the key the i...
Forum Discussion
I'm now suspicious of your engine batteries, have them load checked.
It sounds like that as soon as the key is on the isolator connects the engine batteries. The high initial amperage may be OK as the charger figures out the charging of the additional batteries. The 18A is suspicious as I would expect that the engine batteries were already charged.
What triggers the isolator? It could be just the key turned on. Mine which is a bidirectional BIRD senses the battery voltage of both banks and would not connect the solenoid if the engine batteries were charged and there are built in delays.
If the above is correct your engine batteries is weak and the house batteries are helping to start the engine.
It sounds like that as soon as the key is on the isolator connects the engine batteries. The high initial amperage may be OK as the charger figures out the charging of the additional batteries. The 18A is suspicious as I would expect that the engine batteries were already charged.
What triggers the isolator? It could be just the key turned on. Mine which is a bidirectional BIRD senses the battery voltage of both banks and would not connect the solenoid if the engine batteries were charged and there are built in delays.
If the above is correct your engine batteries is weak and the house batteries are helping to start the engine.
