Troubleshooting guide

46
Installation and Service Manual
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Pump motor intermittent Problem with Liquid Level Control
Board.
Check line voltage first. If AC voltage across
load terminals on Liquid Level Control Board is
not 120 plus or minus 10%, replace the Liquid
Level Contorl board.
Pump motor starts and
stops, short cycles, as soon
as water level drops below
Red (High) probe.
Black (Low) Lead wire is open or
disconnected.
Verify connections and continuity of black wire
from Liquid Level Control Board to Probes on
Carb Tank.
Pump motor starts and
stops, short cycles, as soon
as water level drops below
Black (Low) probe.
Red and Black Leads are switched with
each other.
Verify Red Lead is going to Red probe and
Balck Lead is going to Black probe.
Pump short cycles from
below high probe to just
above high probe - Low
probe has no effect.
Red and Green Leads are switched with
each other.
Black and Green Leads are switched
with each other.
Verify Red Lead is going to Red Probe and
Green Lead is going to Ground Screw on tank
Verify Black Lead is going to Black Probe and
Green Lead is going to Ground Screw on tank.