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Operating Instructions and Parts Manual
Troubleshooting Chart
Symptom
Pump will not start or run
Pump starts and stops too
often
Pump will not shut off or
thermal protector turns off
Pump operates but delivers
little or no water
Possible Cause(s)
1. Blown fuse, tripped breaker
2. Low line voltage
3. Defective motor
4. Defective float switch
5. Stuck/ jammed impeller
6. Float obstructed
1. Back-flow of water from
piping
2. Faulty float switch
1. Defective float switch
2. Obstacle in piping
3. Float obstructed
4. Low line voltage
5. Too many appliances on
circuit
1. Plugged impeller
2. Check valve installed
backwards
3. Pump air locked
Corrective Action
1. If blown, replace with proper sized fuse or reset breaker
2. If voltage is under 108 volts, check wiring size
3. Replace pump
4. Replace float switch
5. If impeller will not turn, remove housing and remove
blockage
6. Make sure float(s) move freely up and down
1. Install or replace check valve
2. Replace float switch
1. Replace float switch
2. Remove pump and clean pump and piping
3. Make sure float move freely up and down
4. If voltage is under 108 volts, check wiring size
5. Install pump on dedicated circuit. IMPORTANT: Do not
use extension cord to power pump.
1. Clean out impeller
2. Reverse position of check valve
3. Check the 1/8 in. hole in discharge line between
pump and check valve; it should be 1 in. to 2 in. above
discharge flange and before the check valve
5
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