LOFA
TM
MC704
Panel Operation and Troubleshooting Manual
Revision D
4.4.1 Testing Shutdown Inputs
Shutdown switches signal a fault by ground contact in most systems. Shutdown operation can be verified by
grounding the shutdown inputs individually. It may be necessary to remove the wire from the shutdown switch to
perform this test.
Note: Most shutdown switches are grounded through the switch body.
Do not use insulating sealant (i.e., Teflon tape) when installing switches.
Some thermostat housings are composites and do not provide ground for the switch.
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