Remak VCS Installation And Operating Instructions Manual page 47

List of Failures (HMI-SG controller) (continuation)
Failure
Description
Outdoor
temperature
B
dependent heat
pump blocking
Heat pump B
Humidification B
Filters B
Fan operat-
B
ing hours
Cooling B
ZZT
(antifreeze B
protection)
ZZT (ROV) B
Inlet air rela-
B
tive humidity
Outdoor air rela-
B
tive humidity
Room air rela-
B
tive humidity
Air quality
B
(CO, CO )
2
Back draught
B
protection (TH)
Flue-gas high
temperature, B
heater shut down
Flue-gas high
temperature, A
VZT shut down
Burner failure A
Electric preheater A
B
Temperature
A
in the inlet
Heat exchanger
B
freezing
Electric heating A
35 Information message – The heat pump blocked due to outdoor temperature
36 Heat pump failure – contact
37 Humidifier failure - contact
39 Filter failure - contact
The pre-set fan operating hours have been exceeded; operating hours are set using the
40
HMI-DM, TM or HMI@Web controllers.
41 Cooling failure (direct expansion evaporation, inverter condensing unit) -contact
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
42
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).
43 Belt - rotary heat exchanger
1.) Inlet air humidity sensor disconnected or damaged
46
2.) Humidity > 100%
1.) Outdoor air humidity sensor disconnected or damaged
47
2.) Humidity > 100%
1.) Room air humidity sensor disconnected or damaged
48
2.) Humidity > 100%
1.) Air quality sensor disconnected or damaged
49
2.) Air quality > 3000 ppm
55 Back draught protection for the chamber after cooling – thermostat TH 167 or ES3M-T3.
56 Flue-gas temperature sensor disconnected or damaged
1.) Flue-gas temperature sensor disconnected or damaged
57
2.) Flue-gas temperature is higher than the pre-set temperature (data point 472).
58 Burner internal failure - contact
59 Temperature behind the electric pre-heater < -50°C
1.) Temperature sensor behind the electric heater disconnected or damaged
59
2.) Electric pre-heater failure - thermostat
1.) Inlet air sensor disconnected or damaged
60
2.) Inlet air temperature is higher than the pre-set temperature (data point 442) – water
heating antifreeze protection (PMO) is active.
61 Temperature sensor behind ROV disconnected or damaged
62 Electric heater failure - thermostat
Control units VCS
Failure Causes
45