Table 4-2. Unit Troubleshooting - CONT.
TEST OR INSPECTION
CIRCULATING PUMP MOTOR DOES NOT OPERATE (CONT).
Push start button and, using a voltmeter, check for 12OVac at terminals T1 and T3 and 208 Vac at
terminal T2 of pump motor relay.
If correct voltage is not present at all three terminals, relay is defective. Replace relay (page
Using a voltmeter, check for 120Vac at terminals Ti and T3 and 208 Vac at terminal T2 of the
thermal overload protector.
If correct voltage is not present at all three terminals, thermal overload protector is defective.
Replace thermal overload protector (page 4-177).