Daikin MicroTech III DPS, Installation And Maintenance Manual

Page: 29 / 114

Commission Unit
www .DaikinApplied .com 29 OM 1263 • MICROTECH UNIT CONTROLLER
Defrost Set-Up
( See page 67 for more information)
Table 16: Defrost Set Up Menu
Item Display
Name
Default
Setting
Range
Password
Level
Defrost State= —
Off
4
Init
Exec
Term
Manual DF= No
No
4
Yes
MinCmpOpTm= 10min 0 – 60min 2
MinAccCmpTm= 40min 0 – 300min 2
MaxFrostTm= 120min 40 – 360min 2
Defrost Temp= — -64 – 64°F 2
Tdef Adj= 0°F -4 .0 – 4 .0°F 2
CmpOpTm= — 0 – 50000 .0min 2
AccCmpOpTm= — 0 – 50000 .0min 2
LoFrstAccTm= — 0 – 50000 .0min 2
HiFrstAccTm= — 0 – 50000 .0min 2
Defrost State (Heat Pump only) is a status only item which
displays the current state of defrost operation . The states are
Off, Initialization, Execute and Terminate.
Manual DF
(Heat Pump only) is an adjustable item that allows
for manual initiation of defrost operation .
MinCmpOpTm (Heat Pump only) is an adjustable item that
sets minimum time that compressor heating operation must
active in the current run cycle before defrost operation can be
initiated .
MinAccCmpTm (Heat Pump only) is an adjustable item that
sets minimum accumulated compressor heating run time since
the last defrost cycle before defrost operation can be initiated .
MaxFrostTm (Heat Pump only) is an adjustable item that
defines the maximum time during periods of potential coil
frosting that can accumulated without initiating a defrost cycle .
Defrost Temp
(Heat Pump only) is a status only item
which displays the effective temperature value the defrost
temperature input must fall below before defrost operation is
initiated base on temperature .
Tdef Adj (Heat Pump only) is an adjustable item that allows a
manual bias adjustment to be used in the internal calculation
of the Defrost Temp . Increasing this value would cause defrost
to be initiated at a warmer defrost temperature value and vise
versa .
CmpOpTime
(Heat Pump only) is a status only item which
displays the time that compressor heating operation has been
active in the current run cycle .
AccCmpOpTm (Heat Pump only) is a status only item which
displays the accumulated time of compressor heating operation
since the last defrost cycle .
LoFrstAccTm (Heat Pump only) is a status only item which
displays the accumulated time since the last defrost cycle of
low frost potential .
HiFrstAccTm (Heat Pump only) is a status only item which
displays the accumulated time since the last defrost cycle of
high frost potential .