Originally Posted by mgb922
Hi I'm new to this forum and our wildcat 32 QB. Had some strange stuff happen this week. Was setting up and some of the lights in the front weren't working. The bad fuse indicator was lit but when I pulled the fuse it wasn't bunts. Stuck it back it and worked.
The bad thing that happened was when I turned on the water heater and nothing but the ignitor was snapping. Opened the panel and the solenoid on the gas valve was melted. One would think it would have been fused but????
I'm also looking for a wiring diagram but I understand they are non-existent.
First, welcome to the forum. I hope you find some time this winter and spend it with us.
Second, Fuses can not always be visually checked "good." A blow can be a microscopic separation in the wire or at the attachment points. Plugging it back in, can arc the break and re-"make" the connection until the next shock "blows" it again. The only way to check a fuse "good" is with an Ohm Meter.
The gas solenoid has me scratching my head though. The furnace is fused on the DC side, but it will only blow if there is a current pull exceeding 15 amps. You can have a nice fire from a high resistance connection without drawing more than 15 amps. Corroded terminals can get hot enough to melt plastic and start fires without blowing a fuse or tripping a circuit breaker.. Maybe that was your problem.
As to wiring diagrams; they do not have one since they don't use one at the plant. They have shop drawings and giant spools of colored twin wire for each gauge they need. In my Flagstaff every 30 amp DC circuit was run with the same Green and Yellow twin wire. This photo has runs for my tank heaters and BOTH slide out motors, all with the same wire type.
I have also attached a "generic" wiring diagram. VERY generic.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW