Unit Control States; Unit Status; Unit Status Conditions - Daikin Pathfinder AWV Series Installation, Operation And Maintenance Manual

Unit Control States

The unit will always be in one of three states:
1. Off – Unit is not enabled to run.
2. Auto – Unit is enabled to run.
3. Pumpdown – Unit is doing a normal shutdown.
3

Unit Status

Unit Status is displayed to indicate the general condition of the unit. The following table lists the text displayed for each unit status
and the conditions that enable each status. If more than one status is enabled at the same time, the highest numbered status
overrides the others and is displayed.
Table 44: Unit Status Conditions
Enum Status
1 Auto
2 Auto: Sound Reduction
3 Off: Ice Mode Timer
4 Off: Low OAT Lockout
5 Off DC not ready
6 Off: All Cir Disabled
7 Off: Unit Alarm
8 Off: Keypad Disable
9 Off: Remote Switch
10 Off: BAS Disable
11 Off: Unit Switch
12 Off: Test Mode
13 Auto: Wait for Load
14 Auto: Evap Recirculate
15 Auto: Wait for flow
16 Auto: Pumpdown
17 Auto: Max Circuit Run
18 Auto: Unit Cap Limit
19 Auto: RapidRestore
20 Off: Invalid Config
21 Off: Cfg Chg, Rst Ctlr
IOM 1242-2 • PATHFINDER
Conditions
Unit State = Auto
Unit State = Auto and Sound Reduction is active
Unit State = Off, Unit Mode = Ice, and Ice Delay = Active
Unit State = Off and Low OAT Lockout is active
Unit State = Off, Condenser Fan Configuration = All Fan VFD, and DC controller is not in auto control
Unit State = Off and all circuits unavailable to start (temporary conditions are not considered)
Unit State = Off and manual reset Unit Alarm active
Unit State = Off and Unit Enable Set Point = Disable
Unit State = Off and Remote Switch input is off
Unit State = Off, Control Source = Network, and BAS Enable = false
Unit State = Off and Unit Switch input is off
Unit State = Off and Unit Mode = Test
Unit State = Auto, no circuits running, and LWT is less than the active set point + startup delta
Unit State = Auto and Evaporator State = Start
Unit State = Auto, Evaporator State = Start, and Flow Switch input is off
Unit State = Pumpdown
Unit State = Auto, Unit Mode = Cool, number of running circuits is limited by the Max Cir Run set point
Unit State = Auto, unit capacity limit has been met or exceeded
Unit State = Auto, unit is performing RapidRestore operation
The unit configuration is not a valid combination or not complete.
Unit configuration set point has changed, and reboot of controller is required
MODEL AWV CHILLERS
®
T1 - Off to Auto. All of the following are required:
• Unit is enabled
• No unit alarm requiring shutdown is active
• At least one circuit is enabled to start
• If unit mode = Ice, Ice Delay is not active
• Low Ambient Lockout is not active
• Basic unit configuration is complete
• Control system has rebooted since configuration changed
• If Cond Fan Config = All Fan VFD, DC controller = Auto
T2 - Auto to Pumpdown. Any of the following are required:
• Unit is disabled
• Unit Mode = Ice and LWT target is reached
• Unit alarm requiring normal shutdown is active
• Low Ambient Lockout is active
T3 - Pumpdown to Off. Any of the following are required:
• Unit alram requiring normal shutdown is active
• All circuits complete pumpdown
• Cond Fan Config = All Fan VFD, DC controller = Auto
T4 - Auto to Off. Any of the following are required:
• Unit alram requiring normal shutdown is active
• No circuits enabled and all circuits in Off state
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