TM 10--3510--221--24
0048 00--2
WATER PUMP DOES NOT TURN ON -- Continued
0048 00
9. Use maintenance menu turn on water pump while monitoring corresponding LED on SSR PCB3.
Does LED come on?
YES Go to step 10.
NO Go to TYPICAL AC OUTPUT SIGNAL FAULT (WP 0104 00).
10. Use maintenance menu turn on water pump while checking for >100 VAC between output terminal on SSR
PCB3 and TB1 terminal (N).
Is >100 VAC present?
YES Go to step 11.
NO Go to TYPICAL AC OUTPUT SIGNAL FAULT (WP 0104 00).
11. Use maintenance menu turn on water pump while checking for >100 VAC between water pump contactor
terminals (A1) and (A2).
Is >100 VAC present?
YES Go to step 12.
NO Go to step 17.
12. Use maintenance menu to turn off water pump then check for >200 VAC across water pump contactor input
terminals (L1 and L2), (L1 and L3), and (L2 and L3).
Is >200 VAC present?
YES Go to step 13.
NO Go to step 21.
13. Use maintenance menu to turn on water pump then check for >200 VAC across water pump contactor
output terminals (T1 and T2), (T1 and T3), and (T2 and T3).
Is >200 VAC present?
YES Go to step 14.
NO Replace water pump contactor (WP 0220 00).
14. Use maintenance menu to turn on water pump then check for >200 VAC across water pump overload relay
output terminals (T1 and T2), (T1 and T3), and (T2 and T3).
Is >200 VAC present?
YES Go to step 15.
NO Replace water pump overload relay (WP 0221 00).
15. Position SW2 then SW1 to OFF.
16. Check wiring and connections between overload relay and water pump.
Are connections OK?
YES Replace water pump (WP 0144 00).
NO Repair as necessary.
