Trane rtu won't run from stat
Working on a trane rtu YSCO60E3. I can jump out for heat at unit with test 1 test 2 but no control from stat It's a trane stat and I tried a Honeywell stat i had which I know works and same result. I checked for voltage at rtrm and have 0 volts across w and r,which shows me that it is calling. Before I condemn board(rtrm) is there something I am missing? Also can you only jump these trane units with test 1 and 2 or can you you jump across w and r on terminal strip on board cause It won't start that way?