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2.2 FAN START TEMP: The temperature of the
heating/cooling coils is constantly being
monitored. When a call for heating or cooling is
received the fan will not start until the coil is at the
appropriate temperature (note: for firmware
versions of 1.7 or greater, if the air handler is
receiving a fan only call prior to the call for heat
or cool, the fan will run and will speed up or
down to the appropriate thermostat input's
speed). This assures the coil is at the correct
temperature to avoid initially delivering warm air
for a cooling call or cool air for a heating call. The
Fan Start Temperature [START TEMP] menu
allows the target coil temperature to be adjusted.
The default target temperature for heating is
80°F and the default target temperature for
cooling is 70°F.
2.3 FAN DELAY: The FAN DELAY menu contains 2
settings: ON DELAY and OFF DELAY.
The FAN ON DELAY is only used if a coil sensor is
in fault. If the J+ board recognizes a coil temperature
sensor is not installed or has faulted the FAN ON
DELAY will be used to delay the fan from coming
on to allow the coil time to get to the target
temperature.
The FAN OFF DELAY is always used to allow the
fan to optionally run for a time after a demand has
been satisfied allowing time to offload the coil of
any excess heat that may still be present.
SYSTEM MENU
The System menu consists of two items; Defaults and Cal
pressure.
The DEFAULTS menu allows all settings to be returned to
factory default values indicated in Defaults Section. UNIT
MODEL and UNIT SIZE are not changed when loading
factory defaults.
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