Daikin MicroTech Operation And Maintenance page 19

Figure 11: Heat Mode with Defrost Super State Diagram
Enter from:
LUI Input
Network Input
Auto Mode
Heat
Mode
DAT < VCLL
No
IAT > OCS
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Heat
Mode
Yes
No
Return to
Yes Fan Only
Mode
Applies to ASHP models only
OACT < DSSP
Heat
Mode
Run Time >
DTL
Yes
Applies to WSHP models only
Heat
Mode
Run Time >
60 Seconds
Yes
Low Limit
Mode
OADP = OADH
No
DAT > VCLL
Yes
19 OM 1280-2 • MICROTECH UNIT CONTROLLER
Description of Operation
Start Defrost
Yes
Timer
OACT > DRSP
Yes
No
Suction
Refrig. Temp. <
Low Suction
Setpoint
Suction
Refrig. Temp. >
Defrost
Low Suction Setpoint +
Mode
Differential
Yes
No
OACT < DTTC
Yes
Defrost
Mode
Yes