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External contact control
The air handler has an MIM-B14 external contact control interface module installed by default. The external
contact interface card (small PCB to the right of the main PCB) has a jumper installed between terminals 5 and 6.
As programmed from the factory, if this jumper is removed, the air handler will turn off and any connected wired
controllers will be disabled. Remove this jumper to connect a condensate drain line float switch or auxiliary drain
pan float switch. Only connect a 0 volt, normally closed, switch to these terminals. If voltage is connected it will
damage the sub PCB and main PCB.
Only connect a 0 volt, normally closed, switch to these terminals. If voltage is connected it will
damage the sub PCB and main PCB.
AM0**JNZDCH/AA IM ENG_V1.5_07082015
Main PCB
32
Jumper
6
5
4
3
2
1
Sub-PCB
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