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The Make-Up Air Module will turn on when the
outdoor relative humidity is above 55%, and turns
oȺ when the relative humidity is below 50%. This
is done by the outdoor humidistat located on the
module.
The module is designed to turn oȺ the MUAM
compressor when temperature is below 50°F.
If troubleshooting the Make-Up Air Module with an
amp probe, the amperage should be between .75
and 1 amp, measured on the BLUE wire of the Make-
Up Air Module harness. This is dependent upon the
line voltage.
If for some reason the customer doesn’t want to use
the MUAM and complains of air coming through the
Zoneline, a panel can be ordered and installed (Part
#: WP76X21320) to block the outside opening.
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