Bosch LM Series Installation, Operation And Maintenance Manual page 17

LM Series Heat Pump
UPM Sequence of Operation (SOO) Flow Chart
Y1=1
YES
Power/Switchs/Sensor
Status Check
V 18VAC
>
YES
HPC = 1
YES
LPC = 1
YES
FRZ > TEMP
LIM
YES
CON > 0
YES
INITIAL
POWER UP
YES
Revised 09-13
NO
NO
Blink Code On Status LED
NO
Start Counter (If Applicable)
YES
TIME > 120
Start Timer
NO
NO
TIME > 30
Start Timer
NO
NO
NO
Start
Anti Short Cycle
NO
Start
Random Start Up
Figure # 14
Lockout Can Be Set To
Soft Lockout
Record Alarm
SEC
YES
SEC
Blink Code On Status LED
Report Alarm Fault
ALR Output = On/Pulse
NO
YES
T > ASC OR
RS SEC
LEGEND:
HPC - HIGH PRESSURE CUTOUT
LPC - LOW PRESSURE CUTOUT
FRZ - FREEZE PROTECTION CONDITION
CON - CONDENSATE OVERFLOW CONDITION
CC - COMPRESSOR COIL
ASC - ANTI SHORT CYCLE
RS - RANDDOM START
Sequence of Operation | 17
4 Via Dip Switch
COUNT = 2
NO
YES
CC Output = Off
Hard Lockout
CC Output = On
8 733 905 315 (2013/9)