Remak VCS - Page 47

45
Control units VCS
List of Failures (HMI-SG controller) (continuation)
Failure
Description
Failure
Class
Failure
Number
Failure Causes
Outdoor
temperature
dependent heat
pump blocking
B 35 Information message – e heat pump blocked due to outdoor temperature
Heat pump B 36 Heat pump failure – contact
Humidification B 37 Humidifier failure - contact
Filters B 39 Filter failure - contact
Fan operat-
ing hours
B 40
e pre-set fan operating hours have been exceeded; operating hours are set using the
HMI-DM, TM or HMI@Web controllers.
Cooling B 41 Cooling failure (direct expansion evaporation, inverter condensing unit) -contact
ZZT
(antifreeze
protection)
B 42
1.) Lost communication between control unit and ROV frequency inverter - inverter
internal error; wrong settings of the frequency inverter data points (bus communication
protocol, data transfer rate, parity, number of stop-bits, communication timeout; poor
connection of the bus cable to the frequency inverter terminals; bus terminal resistance
on the last frequency inverter has not been performed)
2.) Antifreeze protection ROV/DEV has been activated due to drop in temperature below
the pre-set value (data point 516).
ZZT (ROV) B 43 Belt - rotary heat exchanger
Inlet air rela-
tive humidity
B 46
1.) Inlet air humidity sensor disconnected or damaged
2.) Humidity > 100%
Outdoor air rela-
tive humidity
B 47
1.) Outdoor air humidity sensor disconnected or damaged
2.) Humidity > 100%
Room air rela-
tive humidity
B 48
1.) Room air humidity sensor disconnected or damaged
2.) Humidity > 100%
Air quality
(CO, CO
2
)
B 49
1.) Air quality sensor disconnected or damaged
2.) Air quality > 3000 ppm
Back draught
protection (TH)
B 55 Back draught protection for the chamber aer cooling – thermostat TH 167 or ES3M-T3.
Flue-gas high
temperature,
heater shut down
B 56 Flue-gas temperature sensor disconnected or damaged
Flue-gas high
temperature,
VZT shut down
A 57
1.) Flue-gas temperature sensor disconnected or damaged
2.) Flue-gas temperature is higher than the pre-set temperature (data point 472).
Burner failure A 58 Burner internal failure - contact
Electric preheater A 59 Temperature behind the electric pre-heater < -50°C
B 59
1.) Temperature sensor behind the electric heater disconnected or damaged
2.) Electric pre-heater failure - thermostat
Temperature
in the inlet
A 60
1.) Inlet air sensor disconnected or damaged
2.) Inlet air temperature is higher than the pre-set temperature (data point 442) – water
heating antifreeze protection (PMO) is active.
Heat exchanger
freezing
B 61 Temperature sensor behind ROV disconnected or damaged
Electric heating A 62 Electric heater failure - thermostat