progressive industries EMS-HW50C question

**HeyJude** · 10-12-2021, 11:01 AM

We bought a new to us, used 2021 Reflection 315rlts. It has an onboard surge protector that I cannot figure out. l read the manual but I don't understand the flashing information. Is the flashing normal, will it do this all the time?

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Can anyone explain this to me?

**Second Chance** · 10-12-2021, 11:19 AM

Yes - it will cycle through the information all the time. It displays the voltage them amp draw on leg one, then does the same for leg two, then displays the frequency (60 Hz), then the last error code (normally 0 if no recent errors). It will take your unit off-line if the voltage on either leg drops below 104VAC or if there is a ground fault or polarity problem.

My one piece of advice... NEVER bypass the EMS (it's so much more than just a "surge protector"). Doing so negates its purpose and puts you at risk for damage to ACs, electronics, etc.

Rob

**HeyJude** · 10-12-2021, 11:23 AM

Originally Posted by Second Chance

Yes - it will cycle through the information all the time. It displays the voltage them amp draw on leg one, then does the same for leg two, then displays the frequency (60 Hz), then the last error code (normally 0 if no recent errors). It will take your unit off-line if the voltage on either leg drops below 104VAC or if there is a ground fault or polarity problem.

My one piece of advice... NEVER bypass the EMS (it's so much more than just a "surge protector"). Doing so negates its purpose and puts you at risk for damage to ACs, electronics, etc.

Rob

Thank you.

**Second Chance** · 10-12-2021, 11:29 AM

Originally Posted by HeyJude

Thank you.

You're welcome! BTW - You can create a signature block with your RV and tow vehicle information (see mine below). That way you won't have to repeat that information whenever you post or ask a question - and others won't have to ask. You can create a signature by going to:

Forum Actions (on menu bar) -> Edit Profile -> Edit Signature (under My Settings on the left)

Rob

**CoChris** · 10-12-2021, 03:30 PM

Originally Posted by HeyJude

We bought a new to us, used 2021 Reflection 315rlts. It has an onboard surge protector that I cannot figure out. l read the manual but I don't understand the flashing information. Is the flashing normal, will it do this all the time?

Can anyone explain this to me?

Rob @Second Chance gave you the information. You can also go to Progressive Industries web page or just google for the owners manual (<direct link). It will give you all of the information including the error codes. I printed a code of the error codes and taped it inside the cabinet door where I mounted the display. Note: "E0" error code is "Normal Operation" (i.e. everything is good). If an error has occurred but been corrected (i.e. no longer present) you will see a "PE#". The "P" means "Previous" and the E# code is the same as listed in the table. When you unplug your trailer, it will clear the PE code. If there is no previous error, there will be a pause (blank display) where the PE code would be displayed (I think before the current "E#" status code). When you bypass the EMS system you remove all protection except the basic surge protection. As Rob says, I would not bypass it except is extreme circumstances where you are willing to risk damage or destruction of your electrical device in the trailer. We have the EMS-HW50C in our trailer and it has saved us multiple times (mostly low voltage).

Chris

**USA in a Chevrolet** · 10-13-2021, 02:23 PM

Originally Posted by CoChris

Rob @Second Chance gave you the information. You can also go to Progressive Industries web page or just google for the owners manual (<direct link). It will give you all of the information including the error codes. I printed a code of the error codes and taped it inside the cabinet door where I mounted the display. Note: "E0" error code is "Normal Operation" (i.e. everything is good). If an error has occurred but been corrected (i.e. no longer present) you will see a "PE#". The "P" means "Previous" and the E# code is the same as listed in the table. When you unplug your trailer, it will clear the PE code. If there is no previous error, there will be a pause (blank display) where the PE code would be displayed (I think before the current "E#" status code). When you bypass the EMS system you remove all protection except the basic surge protection. As Rob says, I would not bypass it except is extreme circumstances where you are willing to risk damage or destruction of your electrical device in the trailer. We have the EMS-HW50C in our trailer and it has saved us multiple times (mostly low voltage).

Chris

I’ve had this model in my last 2 fifth wheels & agree not to bypass the unit. However note that if you are running a portable generator you will have to bypass the protector because portable generators do not have a bonded ground. Over the years I’ve found that campground power pedestals have gotten better with less broken or faulty receptacles. However low voltage is still a big problem in crowded parks during periods of high demand. And even recently in our travels to Canada we found many many parks with low voltage. Go on the Progressive website & print out the error code chart. Progressive has excellent tech support & stands by their product. My first Progressive unit’s contacter failed after 6 years. I contacted Progressive to purchase a new contacter. They gave me a free one. Said they like happy customers.