Troubleshooting guide
8
B. For single Power source operation, either the master or the slave unit may be used, provided items 1. through 5.
below are addressed. It is not necessary to reconnect the main transformer in the slave unit. Both the standard and
alternate configurations work equally well for single power source operation. Implementation of items 4. and 5.
below effectively convert the slave power source into a master power source.
1. Disconnect the negative output cable from the power source not being used. To prevent the removed cable
from being electrically hot when the other power source is activated, remove the opposite end of the cable
from the plumbing box and insulate both ends with electrical tape.
2. If the slave power source is used, disconnect the 19-conductor cable from the front of the power source and
plug in the cable from the front of the flow control.
3. If the slave power source is used, move the pilot arc wire from the master unit to the slave unit.
4. If the slave power source is used, install the boost supply fuses.
5. If the slave power source is used, using the black wire on the negative C21, connect the negative of C21 to
the positive of C22.
C. Both master and slave power sources may be reconnected to the alternate main transformer configuration from
the standard configuration. Likewise, both master and slave power sources may be reconnected to the standard
configuration from the alternate configuration. The following instructions are for changing both to and from the
standard and alternate configurations.
1. Identify the three wires from the main contactor connected to the H1 taps of the main transformer. These wires
will not be moved during reconnection.
2. In addition to the contactor wires, each transformer primary has two other wires connected to each coil. Find
these wires and reverse them, taking care to work with only one coil at a time. Working with more than one coil
at a time can result in mixing up wires from different coils. Refer to the schematics depicting the standard and
alternate main transformer configurations (Figure 2-2).
DESCRIPTION
SECTION 2