|
Sounds to me like you have a few things going on all at the same time so lets do one at a time and see what happens.......noting that I am not familiar with your coach specifics.
1. You said the coach battery is only at 9 volts.......12 volts is fully discharged (12.6 full charged for 12v wet cells) so you may have to replace if they have been damaged permanently. When you plug into shore power and turn on your coach battery disconnect, do you see normal charging voltage of 13.1 to over 14vdc across the coach batteries......just checking if the converter is working and if it connects to the coach batteries at least. If the batteries have a shorted cell you may not get normal charging voltages.
2. “Maybe” older coaches had the steps operate off coach batteries.......but newer coaches have steps powered from chassis batteries. If your coach batteries are potentially damaged then perhaps your chassis battery is also not fully charged or potentially damaged?
3. When you turned on the coach battery disconnect you said the furnace blower fan came on under the fridge. Normally the furnace blower fan won’t come on until the thermostat calls for heat. Turning off the power to the furnace (if that is the toggle switch you mentioned) is one way to do that......until you forget you did it the next time you want the furnace to work.
4. The 12vdc coach lights should be wired in parallel.....I highly doubt they are in series. If you have coach DC lights in a general area that are not coming on and you know the bulbs are good check your DC fuse panel again for blown fuses. You could also check the light switch associated with the lights for 12vdc and if the switch is good as well.
Working on an older coach can be a big challenge; it’s sometimes bad enough with new coaches. Good luck.
__________________
|
Thor Forums
