2009 Monaco Signature Commander interior ac voltage lost.

[Tom Miller]

Open ground reading on Sure Gard RV power monitor.  No 110volt power in coach. Any ideas?

Figure it would be on a weekend.

[jacwjames]

Do you have power with generator running??

[Tom Cherry]

2 hours ago, Tom Miller said:

Open ground reading on Sure Gard RV power monitor.  No 110volt power in coach. Any ideas?

Figure it would be on a weekend.

I would suspect the pedestal.  Was this OPEN NEUTRAL or OPEN GROUND.  Open NEUTRAL is UGLY…. If you ran it, you would have mega $$ damage as the 120 VAC turns in to 160 -  180VAC and destroys TV, AC, Microwave, Refrigerator….you name it….it ain’t happy.

Is the Surge Guard a pedestal item or built in or hardwired.

We need that and pictures of the Surge Guard…..depending on WHERE the Surge Guard is….in the system….if it is plug in….move to another site. If it does it there, then I have a good idea.

BTW….the Surge Guard is supposed to be ONLY on the incomimg AC line. It is not needed, nor should be between the ATS and the main panel.  The ATS is downstream of the Surge Guard.  It is reading the INCOMING power. The Genny is NOT SUPPOSED to be in the circuit….so it will work.

Thanks….

[Dr4Film]

Based on you having a 2009 Sig, I would say that your RV Park Pedestal has lost its ground connection to your combination Surge Guard/Transfer Switch and it has faulted not allowing 120 VAC power into your coach.

Have the park correct the pedestal ground problem and you should be OK.

Or possibly your power cord ground pin connection is causing the loss of a good ground.

[Paul J A]

Wrong rabbit hole.

Edited April 14, 2024 by Paul J A
clarify

[Tom Cherry]

1 minute ago, Paul J A said:

You have the Kongsberg Chassis Multiplex system.  Frank is the expert on that. Just a suggestion; low battery voltage?? Breaker on the inverter tripped??  "EACH" snow flake is different!!

YES….Frank is the expert.  NO….not an issue with either the Intellitec MPX lighting or the K’Berg CCM.

This is an AC POWER issue.  The MPX and CCM are DC control systems…..and NOT in the AC power incoming side. We need to KNOW where the Surge Guard is (external on  pedestal) or hard wired interior WITH pictures….wrong rabbit hole….

Thanks….

31 minutes ago, Dr4Film said:

Based on you having a 2009 Sig, I would say that your RV Park Pedestal has lost its ground connection to your combination Surge Guard/Transfer Switch and it has faulted not allowing 120 VAC power into your coach.

Have the park correct the pedestal ground problem and you should be OK.

Or possibly your power cord ground pin connection is causing the loss of a good ground.

Richard….correct. IF the “RV Surge Guard Power Monitor” is, INDEED….the Surge Guard Automatic Transfer Switch and the “display”, then totally agree…

odds are….in order…

Bad Pedestal….and Park problem….

Bad Power Plug….in that the ground wire in the molded connector has “popped” loose.  Very common.  Don’t USE AC until you replace plug….

Loose Ground Connection in a Junction Box …..rarely a “bad ground wire in power cable).

Loose Conneection inside ATS…..tighten it up….

BAD ATS….as in the monitoring is bad. The GROUND is NOT SWITcHED….Hard wired inside fhe ATS.

Past that….pure speculation.  PICTURES….is the “Power Monitor” the ATS or does he have a external one or an “add on” that was hared wired in AC circuit??