Troubleshooting; Probe Fails To Operate - Xylem McDonnell & Miller PSE-800-M Low Water Cut-off Application, Installation, Operation, And Maintenance Manual

Troubleshooting

Probe fails to operate

Perform the following diagnostic checks if the probe fails to operate as required:
1. Check that the water level in the boiler is at or above the level of the probe.
2. Recheck all wiring to ensure proper connections as specified in the wiring diagrams
3. Check to ensure that PTFE tape has not been used on the threaded connection of
4. Some foaming is common in certain boilers. Refer to recommendations from the
PSE-800-M Low Water Cut-off Installation, Operation, and Maintenance Manual
of the boiler manufacturer or in this instruction manual.
the electrode to the boiler.
boiler manufacturer for cleaning the boiler and piping when excessive foaming
occurs.
Troubleshooting
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