Stulz C2020 User Manual

EN/07.2013/58/68
SUCTION PRESSURE LOW STATUS SPL
CONDENSER PRESSURE LOW STATUS CPL
CONDENSER PRESSURE HIGH STATUS CPH
OUTPUT POWER LIMIT STATUS OPL
EEV IN FAILURE EIF
AMBIENT TEMPERATURE INVALID AT I
SUCTION PRESSURE INVALID SPI
CONDENSER PRESSURE INVALID CPI
PERIPHERALS ERROR PE
OUT OF ENVELOPE OE
OVER CURRENT OC
OVER VOLTAGE OS
DRIVE TEMPERATURE HIGH D TA
SUPPLY VOLTAGE LOW SL
DISCHARGE TEMPERATURE HIGH DHA
DISCHARGE TEMPERATURE INVALID DTI
INTERNAL ERROR IE
PLC COMMUNICATION ERROR PLC
HOURS OF OPERATING OF FANS HOF
RUNTIME ERROR RE
THERMOSTAT HIGH TEMPERATURE THT
CONDENSER PRESSURE CP
ALARM ACTIVE AA
FAN 1 ERROR F1E
FAN 2 ERROR F2E
FAN 3 ERROR F3E
FC STOP BY WIND FSI
FC STOP BY FIRE FSF
In the next table the alarms are listed with the conditions to enable and disable them.
Displayed alarm
Select
relay
Enable Disable Delay Notes
High temperature I32 TI > S11 TI < S11 – S12 S17, M21(delay on 1
st
start)
Low temperature I31 TI < S09 TI > S09 + S10 S17, M21(delay on 1
st
start)
Max temperature I33 TI > S13 TI < S13 – S14 S17, M21(delay on 1
st
start)
M48=Yes
Emergency
mode
Antifreeze I34 TE < 3°C TE > 3°C for 180s
Digital humidity I37
High humidity I36 IRH > S16 IRH < S16 – 5% S17,M21(delay on 1
st
start)
Low humidity I35 IRH < S15 IRH > S15 + 5% S17,M21(delay on 1
st
start)
High pressure I39 A10 DIG-IN enabled
A10 DIG-IN
disabled
M23 from compressor start
M158 enables
compressor
Low pressure I38 A13 DIG-IN enabled
A13 DIG-IN
disabled
M22 from compressor start
M158 enables
compressor
Dirty filter I45 A11 DIG-IN enabled
A11 DIG-IN
disabled
Air flow I40
Units with AC evap fans
A12 DIG-IN enabled
A12 DIG-IN
disabled
M25 from evaporator fan
start
Heater thermic I47 A8 DIG-IN enabled A8 DIG-IN disabled

Stulz C2020 Specifications

General

Brand	Stulz
Model	C2020
Category	Controller
Language	English