List Of Failures Hmi-Sg - Remak VCS Installation And Operating Instructions Manual

List of Failures (HMI-SG controller)
Failure
Description
Reduced dehumidi- B
fication capacity
Heat pump defrost B
Ibet EO B
Auxiliary Fan B
Auxiliary Fan - twin B
Backup fans B
in the inlet
Backup fans B
in the outlet
Communica- B
tion, Modbus
Process com- B
munication KNX
Room unit 1 - B
Temperature
Room unit 2 - B
Temperature
Outdoor tem- B
perature
Room temperature B
Outlet temperature B
Inlet temperature B
difference
Room tempera- B
ture difference
10 Reduced dehumidification capacity (pool unit) - Informative notification
13 Informative fault. During the defrosting of the heat pump, the air han-
dling unit is stopped. Subsequently, it is automatically restarted.
14 Fault - supplementary heating in the chamber as frost protection.
15 1) Communication error between the control unit and the frequency inverter
of the auxiliary fan (Modbus data bus) - internal error of the inverter; incor-
rectly configured data points of the frequency inverter (communication proto-
col, communication speed, parity, number of stop bits, communication delay);
improperly connected data bus cable to the terminals of the frequency inverter;
missing termination resistor on the last frequency inverter in the bus
2) Fault in the auxiliary fan (Modbus data bus) - thermal contact, flow sensor
16 1) Communication error between the control unit and the dual frequency in-
verter of the auxiliary fan (Modbus data bus) - internal error of the inverter;
incorrectly configured data points of the frequency inverter (communication
protocol, communication speed, parity, number of stop bits, communication
delay); improperly connected data bus cable to the terminals of the frequency
inverter; missing termination resistor on the last frequency inverter in the bus
2) Fault in the dual auxiliary fan (Modbus data bus) - thermal contact, flow sensor
18 Fault type B - main supply fan fault (active backup fan) - thermal con-
tact, flow sensor, internal fault of the frequency inverter.
19 Fault type B - main exhaust fan fault (active backup fan) - thermal con-
tact, flow sensor, internal fault of the frequency inverter
23 Communication error between the control unit and the fan or VAV frequency
inverter (Modbus data bus) - internal fault of the frequency inverter; incor-
rectly configured data points of the frequency inverter (communication proto-
col, communication speed, parity, number of stop bits, communication delay);
improperly connected data bus cable to the terminals of the frequency inverter;
missing termination resistor on the last frequency inverter in the bus
23 Communication error between the control unit and the HMI-SG controller (KNX bus)
24 Unconnected or damaged HMI-SG1 controller
24 Unconnected, damaged, or incorrectly configured HMI-SG2 controller
25 Unconnected or damaged outdoor temperature sensor
26 Unconnected or damaged room temperature sensor
28 Unconnected or damaged temperature sensor on the exhaust
32 Informative notification is issued when there is a deviation between the sup-
ply temperature and the desired temperature, assuming the Monitoring
Deviation Between Desired and Actual Temperature function is activated
(in data point 201). If the temperature deviation exceeds the set maximum
deviation (data point 801) or the supply temperature falls below the set mini-
mum limit (data point 803), an informational notification is announced.
33 Informational notification is issued when there is a deviation between the room/
exhaust temperature and the desired temperature, assuming the Monitoring
Deviation Between Desired and Actual Temperature function is activated (in
data point 201). If the temperature deviation exceeds the set maximum de-
viation (data point 807) or the room/exhaust temperature falls below the set
minimum limit (data point 809), an informational notification is announced.
Control units VCS
Failure Causes
45