54
OPERATION
HMI Configuration Menu Access
Figure 30 - HMI Screen
General Overview
The HMI allows the user to change parameters and options. The user
may use the HMI to view operating information regarding sensors,
temperatures, pressures, and fault history on the HMI screen
(
).
There are four buttons to navigate through the HMI screens.
NOTE: Buttons change functions during certain options and tests.
Verify the screen and buttons throughout the menu display.
Figure 31 - Save Screen
The user can access the HMI configuration screen by pressing the top
two buttons simultaneously. To exit this screen, simply press the
‘BACK’ button. When setting certain options or functions, pressing the
‘BACK’ button multiple times will bring up the save screen (
).
The user may select ‘YES’ to save the changes, select ‘NO’ to return to
factory settings or select ‘CANCEL.’ When selecting ‘CANCEL,’ any
changes made will not be saved, and the screen will return to the top
menu.
The HMI menu system allows full access to every configurable
parameter in the HMI. The parameters are factory configured to the
specific application. Parameters may need to be modified to fine-tune
automatic operation after the original setup.
Remote (HMI) Control Panel
On units shipped with a space HMI, a Cat 5 cable will need to be run from J4, J5, or J6 (refer to
schematics) on the main MUA Board to J2 on the HMI. If additional space HMIs have been added, they
can be daisy-chained from the first HMI. In the event there is a slave MUA board, HMIs can also be
powered from J1 or J2 of the slave board. An end of line resistor should be added to the last HMI in the
chain.
HMI Notification Letters
Figure 32 - Notification Letters
The HMI will display notification letters (
) when the unit is in a
specific status.
• B = Blower Start or Blower Stop Delay Active
• C = Compressor Min On or Min Off Timer Active. Displayed when
the unit loses a call for cooling or heating (heat pump) during the
compressor’s “Min ON” or “Min OFF” time.
• E = Economizer Function
• O = Compressor oil boost
• T = Throttle Mode Active
• D = Dehumidification mode. Displayed when in dehumidification.
• Δ = Dynamic SP applied
SPACE
70°F
OCCUPIED
IDLE
BACK
ENTER
UP
DOWN
SAVE CHANGES?
CONFIRM
YES
TEMP +
TEMP -
OFF
01/01
FRI
B
HEAT
SPACE
09:49
AM
70°F
OFF
B
Notification
Letter Location
