Multiplex Cold Weather Issue

[Jim Roach]

2006 Dynasty with the multiplex system-

We’ve had several cool overnights,temps in the low 40’s high 30’s. The interior of the coach drops to the high 50* s .  When the temps drop, the touch panels for the multiplex lighting do weird things. They may turn a light on or off,the keypads may light and stay on, etc. is this due to age or are there connections that need to be cleaned and repaired?

Is this from the closet where the main panel is located getting cold?

Any suggestions?

[Ivylog]

First thing for many computer issues, reboot it… turn the battery disconnect switch by the door off for 15 seconds. Doubt it’s a temperature problem.

[Dr4Film]

I think you must have a different problem as it has been down into the 50's here in New Hampshire a few times with no problem with our 2006 Dynasty Multiplex System.

[Tom Cherry]

30 minutes ago, Jim Roach said:

2006 Dynasty with the multiplex system-

We’ve had several cool overnights,temps in the low 40’s high 30’s. The interior of the coach drops to the high 50* s .  When the temps drop, the touch panels for the multiplex lighting do weird things. They may turn a light on or off,the keypads may light and stay on, etc. is this due to age or are there connections that need to be cleaned and repaired?

Is this from the closet where the main panel is located getting cold?

Any suggestions?

You have either a bad set of Ballasts and they are robbing power…each module is rated at an effective 70 amps. OR,

You have some issues in the main 3 wire data buss. OT

 The other thing…..there is an electronic gremlin in the System

Turn OFF the Battery cut off switch…leave it off for say 15 minutes.  Then turn on.  IF you had a voltage blip or an interruption and a faulty (was interrupted) boot….that is EXACTLY how it will work.

REBOOT is always the first step.  Having good house batteries is imperative.  Have you checked the connections?  There are upstream circuit breakers.  We have had individuals that had such….they chased the large cables on each module and the CPU.  They found loose connections.  If it is COLD….then I would wonder about the connections between the batteries and the main rear Buss.  When metals shrink….then intermittent connections occur.

Start with the simple….reboot…..then isolate which key pads and which circuits are on them.  Maybe one module or a power (high resistance) connections….

@Frank McElroy and @pwhittle are our resources and gurus…..reach out to them,