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Originally Posted by olfart
I've read nearly all the post about this system but still have questions.
I have a 1998 Winnebago Chieftain WFL33WB with 30 amp service.
This last weekend - at a camp ground in Ohio. We had a lightning strike very near the park that took out park electric service. On the coach next to me - it burnt up his hard wired surge protector. And even burnt up his TV cable connection.
After power came back on - everything in my coach worked except the rear A/C. Also the LED read out on the EMS wasn't working properly. All the lights are wrong and it's reading 88. Today after trouble shooting - I don't have 12v power to the tsat for the rear A/C - which goes thru the EMS. The rear A/C does have 120v. All of the coach breakers have been reset. I tried resetting the EMS by shutting down all power - even disconnecting the batteries but nothing seems to work. After talking to Winnebago Tech - it seems he believes the circuit board is bad in the EMS. But - like other old things - they don't make it anymore. And Mobility RV in Iowa says the new up grade EMS is over $400.
My questions are - does anybody know where I can obtain an old replacement board ? And just where is the EMS sensor located that tell the EMS what the amps are? Also - does anybody have any other ideas. Thanks guys & gals.
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I think mobility RV is charging a premium price. We had the same thing happen to our 2001 Adventurer last year. We took it to the Winnebago factory and they replaced both the circuit board and the digital display panel for less than $250.00 including labor.
As I recall the original display isn't compatible with the new circuit board, so even if it works it has to be replaced should you decide to go with new items. The old board and display had a 3 wire connector and the new ones have a 4 wire connector. Fortunately Winnebago used a 4 conductor wire but just taped off the unused strand.
As an aside it took the factory tech less than 1/2 an hour to replace both the board and display.