WFCO 8965 converter
I have a 8965 WFCO converter and a Onan 3600 generator for my horse trailer living quarters. Here are my symptoms. When running the gen all the 110 side works but not the 12V side. The 12v only is wor...
Forum Discussion
Is this a NEW problem?
Has 110V AC worked on shore power and from gen in past?
Has 12V DC worked when on AC power and when not on AC power before?
Horse trailer...is this a 'commercial install' or a 'home install'?
AC shore power comes into one side of 'transfer switch'
Gen AC power comes into one side of 'transfer switch'
AC power to rigs AC Panel comes out other side of 'transfer switch'
(Transfer switch flips from one input source to other)
AC Panel (with circuit breakers)
Power comes from transfer switch to MAIN CB (30A or Double 50A0
Hot Bus feeds individual CBs to A/C, Microwave, outlets, 'converter'
Converter takes 110V AC power input and converts to 12V DC output
Battery cables connect to converter bus
Bus feeds individual fuses to lights, water pump, furnace, fridge/water heater controls etc.
Converter supplies DC system when on AC power source
Battery feeds DC system when not on AC power
So if gen feeds AC Panel----then converter should be feeding DC System unless converter has failed OR AC input CB has tripped
When swapped over to shore power.....either you have AC power from transfer switch or you don't.
Can't have AC power at AC Panel and not thru individual CBs unless MAIN CB has tripped (or individual CBs are tripped)
DC System is feed from converter or from battery...unless battery is dead, disconnect switch is OFF or 'reverse polarity' fuses on converter have blown
Start with just battery....no AC and check that DC System works
Then check with one AC source and check voltages on both AC/DC System
Then swap to other AC source and repeat checks.
One system at a time....
Has 110V AC worked on shore power and from gen in past?
Has 12V DC worked when on AC power and when not on AC power before?
Horse trailer...is this a 'commercial install' or a 'home install'?
AC shore power comes into one side of 'transfer switch'
Gen AC power comes into one side of 'transfer switch'
AC power to rigs AC Panel comes out other side of 'transfer switch'
(Transfer switch flips from one input source to other)
AC Panel (with circuit breakers)
Power comes from transfer switch to MAIN CB (30A or Double 50A0
Hot Bus feeds individual CBs to A/C, Microwave, outlets, 'converter'
Converter takes 110V AC power input and converts to 12V DC output
Battery cables connect to converter bus
Bus feeds individual fuses to lights, water pump, furnace, fridge/water heater controls etc.
Converter supplies DC system when on AC power source
Battery feeds DC system when not on AC power
So if gen feeds AC Panel----then converter should be feeding DC System unless converter has failed OR AC input CB has tripped
When swapped over to shore power.....either you have AC power from transfer switch or you don't.
Can't have AC power at AC Panel and not thru individual CBs unless MAIN CB has tripped (or individual CBs are tripped)
DC System is feed from converter or from battery...unless battery is dead, disconnect switch is OFF or 'reverse polarity' fuses on converter have blown
Start with just battery....no AC and check that DC System works
Then check with one AC source and check voltages on both AC/DC System
Then swap to other AC source and repeat checks.
One system at a time....
