Table 4-2. Unit Troubleshooting - CONT.
TEST OR INSPECTION
CIRCULATING PUMP MOTOR DOES NOT OPERATE (CONT).
Remove screws and pump motor cover and check for 120 Vac at two wire connections (T1 and T3)
and 208 Vac at one connection (T2).
If correct voltage is not present at all three connections, disconnect power source and replace
wire(s) found not having correct voltage.
If correct voltage is present at all three connections, replace pump motor (page 4-277).