Jackson 100 B/PRB, Service Manual, Page: 30 / 55

4. Be sure wash tank is empty and master switch and heat switch are off. Carefully reapply power to machine.
Begin by turning master switch on. With an insulated jumper wire, touch jumper between terminals C & H; relay
in clear plastic cube should activate as wire is touched to terminals. Observe relay contacts - - they should pull
in. If they do, remove wire and they should return to original position. Repeat several times to verify action.
Reconnect wires removed.
5. If relay operates, the control can be deemed operational and other causes should be explored. EXAMPLES: 1.
Loose or broken wire to probe or ground (green wire).
2. Dirty probe(s).
3. Solenoid faulty (see instruction page concerning solenoid).
4. Thermostat faulty or needs adjustment (see instruction page concerning thermostat).
5. Wash element faulty (see instruction page concerning wash-heat checkout).
6. If relay does not operate, check voltage being applied to LI - L2 marked on control. It should be 208-230V.
Replace control, if necessary.
7. In any case, always locate sensor (probes) inside wash tub and clean off all deposits (instruct customer; this
should be at least a weekly project).
8. Remove power to machine and replace panel and any wires that were not replaced previously.