Programming Fresh-Air
17
5.6.1 List of error-codes and nature of mal-
function
Code <AAA> :
Persistent low voltage (voltage below 185 V) for more than
5 seconds.
<A09> - absent or defective external air sensor
<A10> - absent or defective treated air sensor
<EEEE> - absent or defective chilled water sensor
Code A02 :
Check the straps on HP/BP connectors
5.7 Programming Parameters
Three levels of programming parameters are available to the
end user.
5.7.1 Programming through <F> (Function)
key
2b 3 = Extraction blower(s) - 5 manual speeds can be pro-
grammed - last setting is memorized.
1b 3 = Fresh-Air blowers - 5 manual speeds can be pro-
grammed - last setting is memorized.
1r01 = reheat N° 1 activated.
1r00 = reheat N°1 on standby.
2r01 = reheat N° 2 activated.
2r00 = reheat N° 2 on standby.
L 09 = time delay between 1b (Fresh-air blower) and 2b (Ex-
traction blowers) in seconds.
1L2.0 = temperature differential reheat N° 1 operation as
measured from reference setpoint (2.0 °C).
2L2.5 = temperature differential reheat N° 2 operation as
measured from reference setpoint (2.5 °C).
d 0 = number of dehumidifying cycles per 24 Hours (if such
cycle is programmed in absence - see programming by snow
key).
t 1 = number of minutes before display switches back to air-
out temperature read-out after the <F> key is used.
5.7.2 Programming through Sun Key
To enter this programming mode, first switch off Display by
on/off key, then push Sun Key for 3 seconds. You will now
enter Sun Key programming mode as following:
0 16 = temperature differential in °C for cool cycle opera-
tion. Max = 25 °C - mini = 5 °C.
1 20 = max lower ceiling of reference setpoint cool cycle.
Mini = 10° - max = 30 °C.
2 18 = temperature differential in °C for heat cycle opera-
tion. Max = 35 °C - mini = 10 °C.
3 24 = max. higher ceiling for reference setpoint heat cycle.
Mini = 10° - max. = 35 °C.
4 0.0 = temp. read out calibration chilled water sensor
(from -9.9 to +9.9 °C).
5 15 = number of minutes before the Digital Display switch-
es into sleep mode. Max. = 99 minutes.
6 0.0 = outside air temperature sensor calibration.
7 0.0 = air-out (after treatment) temperature calibration.
8 00 = AC voltage reading calibration 50 Hz.
9 01 = choice between normal procedure Fresh-Air blower
operation of manual fixed speed.
0 = manual speed regardless of all operating procedures.
a 00 = AC voltage reading calibration - 60 Hz
5.7.3 Programming through Snow Key
To enter this programming mode, first switch off Display by
on/off key, then push Snow Key for 3 seconds. You will now
enter Snow Key programming mode as following:
0185 = AC voltage low safety cut-out (185 V)
1 0 = infrared remote control disabled.
1 1 = infrared remote control enabled.
2 1 = type of blower used:
0 = standard centrifugal
1 = cross-flow
3 18 = lower ceiling switch-over window between cool and
heat cycle (18°)
4 20 = higher ceiling switch-over window between cool and
heat cycle (20°)
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