Foot of bed will go up but will not go down

I have a hill rom total care sport 2 the foot of the bed will go up but will not go down. I am paralyzed and purchased this bed out of pocket I hope you can help or tell me where I can look.

Thank you

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0