convertor

[spinella]

not sure if mines bad. the fans wont go on at alll....not even with all the lights on. i checked the fuses and breakers.whats the proper way to check the converter. thanks. prior to this trip two terminals on the batteries were loose and a little low on water. i fixed both. batteries are vtwo and a half years old.Edited by: spinella

[Dayle1]

Are the lights dim? Measure the voltage. On mine the lights would get very dim and voltage would be down around 12V or lower (can't recall), then it would finally jump to 13.6V and lights would be normal briteness, but quickly fall again. I ordered a replacement board from Tweety's for a little over $200. Took 10 min. to swap it out. Solved the problem. This was on my old '04 Cruiser back in Feb.

[fhenn]

Mine went out Last year, I pulled into a campground and plugged in nothing happened. Previously from the time we bought the camper the lights would dim and than come back on strong. I check the battery every trip, water was at the proper level. The fan ame on a lot in the old converter. The RV tech that came out tested the converter and replaced it with an up grade, also it made a two year old battery go bad. The new converter fan does not come on hardley at all, no more lights dimming and going bright. Did learn to carry a trickle charger so if it happens again I can use it in place of the battery while camping

[spinella]

lights dont dim. two seperate things happenened this morning. 1st the slide out switch was dead, i fiddled with it thern the slide came in. second nothing came out of the tounge jack...no up or down. this was both after i un plugged the trailer. they worked when i backed the truck up and hooked up the trailer plug...got power that way.gauge is showing batteries are all the way good right now with the tr uck plugged into thbe trailer and with it discon nected....no shore power. is there a easy way to test the converter? thanks again.

[fhenn]

Check the 40 amp fuse

[spinella]

will do thank you. just got back from niagara falls 1300 miles roundtrip and im beat. didnt even disconnect yet. i'll check tommorrow and report back.

[KennyB]

We had a similar thing on our last trip. Weunpluggedthe shore power and then tried to drive the slides in, nada. Hooked the TV up to it and they came in. The 12V system was running off either the converter or TV battery but not the internal batteries.
It turned out that a wire from the batteries had pulled out of a ring lug terminal. Put a new lug on, reconnected it and all is good.
I hope yours is something simple like that.

[Chrisnan23]

You wanted a way to check the convertor. When you take the face plate off in the upper right on the board there should be two big lugs, one with white wires and one with a red wire. these should have 13.2 to 14.6 volts DC between them (I'm hoping you can use an electrical meter)
Converter Operation Modes

All WFCO power converters are automatic three-stage switching

power supplies. The converter senses which mode it needs to be in by

checking the RV system voltage.

The three modes/stages of operation include:

Absorption mode/Normal operation

Nominal battery charge and supplies power to appliances

Bulk mode/Charge mode

Fast battery charge and supplies power to appliances

Float mode/Trickle charge

Trickle battery charge during storage

Absorption Mode: During this mode, the converter output is in the

13.6 Vdc range. This is the normal operation mode. This mode

provides the 12 Vdc and current required by the 12 Vdc RV appliances,

as well as slow charging the battery.

Bulk Mode: In this mode, the output voltage of the converter will

switch to 14.4 Vdc range for a maximum of four hours. If the converter

cycles between ā€œAbsorption and Bulk modeā€?, there could be a shorted

battery cell or other issues.

Float Mode: In this mode, the converter is charging the battery with a

trickle voltage of 13.2 Vdc. When the converter senses a demand (by



turning on lights), the converter automatically returns to the

[spinella]

thanks kenny...going out there right now.

[spinella]

thanks chris.

[spinella]

FUSES LOOK GOOD...any reason why fans would'nt come on? looks like batterys are holding a charge.

[cwit]

This is why this is my favorate forum you can always get help here.

[Chrisnan23]

Did you check the voltage output? The fans come on when the convertor goes into "bulk" mode (13.6 to 14 volts output)

[spinella]

no chris i have'nt checked yet.....been feeling a little under the weather. thanks for your previous post. i'm going to print it out and leave it in my trailer for future use also. i'll post back after i check. thanks again.