Sequence Of Operation - Bosch LV Series Installation And Maintenance Manual

LV Heat Pump Series

Sequence of Operation

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
LV Heat Pump Series
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
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
Units Controls - UPM | 13
4 Via Dip Switch
COUNT = 2
NO
YES
CC Output = Off
Hard Lockout
CC Output = On
8 733 905 683 (2013/04)