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Dover composite bouncing up and down

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Hi all, I got a dover composite that everytime it reaches the floor instead of stoping at the floor it starts leveling up and down this is happens on both directions. If i hold the LUD relay for 1/2 a sec. It will stop perfectly at the floor. Also if the car is at the 2nd floor or any floor and I give it a down hall call from the 4th floor it will arrive to floor with no problems but if I give it a up hall call it won't stop and starts doing the up and down thing and same thing happens if i do the same thing if the car is above the hall call.
Any help will be appreciated...



   
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(@NOTIME)
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MOP, UA and DA must be off at the time of LUD in



   
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 359
(@359)
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Topic starter  
Thanks for the tip... my UA and DA are not droping. They drop if the car is running up for a down call then UA drops but not if is a up or car call. If it is goind down for an up call then DA drops but not for and down or car call...



   
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 359
(@359)
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Found the problem, turn out to be bad contacts on relays DR1 AND DR2 they feed the UA and DA relays.
Thanks for the tip NOTIME



   
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