Off Mode (State 9) - Daikin MicroTech II Operation And Maintenance Manual

Figure 7: Off state diagram
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LUI Input
Network Input
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Table 8: UVC state names and numbers
Normal UVC modes
OFF
Night purge
Fan only
Emergency heat
Heat
Auto
Cool
Off mode is a "stop" state for the unit ventilator. It is not a "power off" state. Power may still be provided
to the unit.

OFF Mode (State 9)

Off mode is provided so that the UVC can be forced into a powered OFF condition.
OFF mode is a "stop" state for the unit ventilator; it is not a power off state. OFF mode
consists of a single UVC state: OFF [9].
When OFF mode becomes active, the UVC stops all normal heating, cooling, and ven-
tilation (OA damper is closed), and fan operation ends. The UVC continues to monitor
space conditions, indicate faults, and provide network communications (if connected to
a network) in the OFF mode while power is maintained to the unit.
While in OFF mode, the UVC does not maintain DA temperatures. If the space temper-
ature drops below EHS while in the OFF mode, the UVC is forced into the Emergency
Heat mode (see "Emergency Heat Mode (Super State)" on page 17).
The space lighting output continues to operate based upon the current occupancy
mode.
Note: Special purpose unit modes such as Purge, Pressurize, and De-pressurize can force the
UVC to perform "special" functions during which the display appears to be in the OFF
mode.
OFF
Mode
(State 9)
State names
Decimal
OFF 9
Night Purge 8
Fan Only 10
Full Heat 7
Cant Heat 13
Heat 5
Cant Heat 11
Low Limit 14
Econ 3
DA Heat 4
Cant Cool 12
Low Limit 15
WARNING
No
Is SpaceTemp
< EHS
15
d
esCrIptIon of
State numbers
ASCII Hex
9 57
8 56
A 65
7 55
D 68
5 53
B 66
E 69
3 51
4 52
C 67
F 70
EMERGENCY
Yes HEAT
Mode
o
peratIon
OM 752-4