Fancom 750 User Manual page 33

Lumina 750
Alarm messages
Temperature alarms
Alarm
Compost temp.
Air temp.
Froststat
Frost mixed air
Frost air inlet
Temperature sensor failure
Measurements from connected sensors (except the outside sensor) are reliable as long as their measurements
are between -99.9ºC and +99.9ºC. The measurements are unreliable outside these limits. The control computer
will give an alarm. This can mean that the temperature sensor has not been correctly connected or is defective.
The screen displays '#' at the temperature readout.
O2/RH alarms
Alarm
O2 alarm
Relative Humidity (RH)
alarm
Circulation alarms
Alarm
Fan trouble
Feedback fr. air
Feedback fan
Communication alarms
Alarm
O2 comm. low
O2 comm. high
Comm. I/O-module 1 thru
31
The Lumina 750 tests a number of functions which are unrelated to climate control but concern the functioning of
the control computer itself. The computer will show the number of error if he detects one. The presented number
will be greater than 100.
Cause
The difference between the Measured compost temperature
temperature control value is more than the entered value.
The difference between the Measured air temperature
control value is more than the entered value.
The frost thermostat is active.
The Measured mixed air temperature is lower than the entered
temperature.
air
The Measured fresh air temperature is lower than the entered
temperature.
Cause
The Measured O2 content is lower than the
difference or higher than the
The Measured RH is lower than the
higher than the Maximum RH
Cause
The fan is malfunctioning.
There is a mechanical air inlet failure. For example, the servomotor or the fresh
air inlet is faulty. The control computer also gives this alarm if the fresh air inlet
measurement or the measured amount of fresh air is incorrect.
There is a mechanical RPM feedback failure. For example, a faulty servomotor
or frequency controller. The computer also gives this alarm if the total air flow
measurement is incorrect.
Cause
Communication with the O -mulitiplexer (e.g a. MUX.8/.16) which measures the
2
O content in the low measuring range has been interrupted for a long period of
2
time.
Communication with the O -mulitiplexer (e.g a. MUX.8/.16) which measures the
2
O content in the high measuring range has been interrupted for a long period of
2
time.
The communication with the IRM- or ISM.12-module has been interrupted for a
length of time.
and the
Minimum O2
Maximum O2 limit plus the set difference.
Minimum RH limit minus the set difference or
limit plus the set difference.
Alarm
and the Compost
Air temperature
Minimum mixed
Minimum fresh air
limit minus the set
30