1999 Beaver Marquis

Arrived at campsite, when attempting to deploy slide, switch does not work in or out.  All other hydraulics (fan, levelers) operate normally.  Any ideas if there is fuse or relay that might be causing this problem?

thanks for all the responses.
it turned out to be a lose wire on a relay thanks to the folks at Monaco for helping.
The relays were mislabled and with a little help fond a lose connection.