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14
TROUBLESHOOTING
LACK OF INPUT SUPPLY VOLTAGE (120V)
Plug the fixed output chemical metering pump directly into the 120V receptacle into which
the PCM was originally plugged. This will bypass the PCM. If the pump does not run, the
power source or pump is defective. If the metering pump operates, proceed to
LACK OF
PROPER INPUT SIGNAL.
LACK OF PROPER INPUT SIGNAL
Plug the metering pump into the PCM and the PCM into the receptacle tested in
Step I.
Remove the PCM input signal cable from the water meter or relay and touch the two wires
together. The pump should operate for the pre-determined run time setting and then stop.
• If the metering pump runs, the failure is in the water meter contacts.
• If the metering pump does not run, the failure is in the PCM.
• Contact the factory for information on service and repair.
