Selection of J12/J13 Jumper 01CB30 Control Board (2 Stage/Combo)
The setup of some of the key jumpers can actually keep the units from starting up. J12 and J13 jumper positions must be looked at together to determine the exact capabilities or operation of the unit. The different setup configurations are explained to familiarize technicians with the effects on unit operation.
J12 Tech Bulletin April 2008 - 197 kB