Corporate
800.882.8854
66
System Troubleshooting - Minor Fault
Recirculation or Underflow (UF) Valve Not Opening / Not Closing
(Electrical)
The most common electrical issue with one
of the mechanical ball valves is that there
is a problem with either the “Motor Run”
switch or the “Position Switch.”
To gain access to the switch area, pry off
the coupler from the motor shaft using a flat
bladed screwdriver or something similar.
Then remove the four Allen or Hex Head
screws from the underside of the motor
cover.
This will expose the area where the
switches are mounted. There are small
studs or alignment pins for mounting each
switch. Each switch has a white plastic
“keeper” to hold it in place.
If neither switch is out of position then
verify physical switch function by checking
continuity using a digital or analog volt
meter.
Recirculation Ball Valve Wiring Underflow Ball Valve Wiring
Com
NO
NC
NOTE:
When “Ohm-ing”
out the switches,
reference the call-
out below.
If unable to resolve an electrical problem following the steps
above, the schematics pages 55-57, and a voltmeter, call for
Technical Support 800-882-8854.
Run Sw
Pos Sw
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