Sequence Of Operation Upm - Bosch LV009 Installation And Maintenance Manual

LV Heat Pump Series
Sequence Of Operation
START
Y1 = ON
NO
YES
POWER/ SWITCHES/SENSOR
STATUS CHECK
V > 18VAC
NO
YES
HPC =
CLOSED
NO
YES
LPC
=CLOSED
NO
YES
FRZ >TEMP
LIMIT
NO
YES
CON > 0
NO
YES
INITIAL
POWER UP
NO
YES
LV Heat Pump Series
RESET ON
Y
NO
YES
CLEAR FAULTS
BLINK CODE ON STATUS LED
START COUNTER (IF APPLICABLE)
CC OUPUT=
ON
NO
YES
TIME >
START
120 SEC
TIMER
NO
TIME > 30
START
SEC
TIMER
NO
START
ANTI SHORT CYCLE
START
RANDOM START UP
YES
RESET ON R
R = 24VAC
NO
SOFT LOCKOUT
RECORD ALARM
LOCKOUT CAN BE SET
TO 4 VIA DIP SWITCH
NO
NO
BLINK CODE
YES
ON STATUS LED
YES
BLINK CODE ON STATUS LED
DISPLAY OUTPUT = PULSE
ALR OUTPUT = ON/PULSE
NO
YES
T > ASC OR
RS SEC
Figure # 13
Start-Up | 17
COUNTER
NEEDED?
NO
YES
CNT = CNT+1
COUNT = 2
OR
COUNT = 4
YES
HARD
LOCKOUT?
YES
CC OUTPUT = OFF
CC OUTPUT = ON
8 733 905 683 (2016/09)