Bosch LV Series - Sequence of Operation

Units Controls - UPM | 13LV Heat Pump Series
8 733 905 683 (2013/04)LV Heat Pump Series
Sequence of Operation
UPM Sequence of Operation (SOO) Flow Chart
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Y1=1
V
>
18VAC
HPC = 1
LPC = 1
FRZ
> TEMP
LIM
CON
> 0
INITIAL
POWER UP
T
>
ASC OR
RS SEC
TIME
> 30
SEC
TIME
> 120
SEC
COUNT = 2
Start Timer
Start Timer
CC Output = On
CC Output = Off
Blink Code On Status LED
Report Alarm Fault
Hard Lockout
ALR Output = On/Pulse
Blink Code On Status LED
Soft Lockout
Record Alarm
Start Counter (If Applicable)
Start
Anti Short Cycle
Start
Random Start Up
Lockout Can Be Set To
4 Via Dip Switch
Power/Switchs/Sensor
Status Check
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