IC100CX SERVICE MANUAL
Manual IC100CX GB
Page 7 di 20
Pb3 probe has to be configured to use a pressure transducer.
When the evaporator condenser pressure is greater than CO21 set point, a compressor
(if two compressors are working) or the capacity control (in case of one compressor with
capacity step) is switched off.
When only one compressor is working or only the capacity step is active, the function
has not effect on the regulation.
The lower display shows “ACUn” alternated to default visualization.
When the evaporator condenser pressure falls below CO21 – CO22, the function is
disabled and, if required for the regulation, the previously shut down
compressor/capacity step can be re-inserted.
Note
When the unloading function is active, to avoid a prolonged working time in this
condition, if the evaporator condenser pressure is lower than CO21 set point and higher
than CO21 – CO22 for a time of CO25, the function is disabled.
CO25 delay time starts when the evaporator condenser pressure is lower than CO21 set
point.
Low pressure in heat pump mode
The function allows the machine to operate in case of low outside temperature (start-up
in winter with ice-covered batteries), to avoid possible low pressure alarm.
Pb3 probe has to be configured to use a pressure transducer.
When the evaporator condenser pressure is lower than CO23 set point, a compressor
(if two compressors are working) or the capacity control (in case of one compressor with
capacity step) is switched off.
When only one compressor is working or only a capacity step is active, the function has
not effect on the regulation.
The lower display shows “ACUn” alternated to default visualization.
When the evaporator condenser pressure is greater than CO23 + CO24, the function is
disabled and, if required for the regulation, the previously shut down
compressor/capacity step can be re-inserted.
Note
When the unloading function is active, to avoid a prolonged working time in this
condition, if the evaporator pressure is higher than CO23 set point and lower than CO23
+ CO24 for a time of CO25, the function is disabled.
CO25 delay time starts when the evaporator pressure is higher than CO23 set point.
B
OILER
F
UNCTION
The boiler function can be used for heating (Ar20=1) or for support the heating function
(Ar20=0).
To enable the function is necessary:
unit configured in Heat Pump mode
Pb4 configured as external air probe (CF07=3)
Heating Integration Control Ar20=0
Anti-freeze/support heater 1:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 time
regulation probe < Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
If outside temperature exceeds the Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded.
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
If outside air temperature falls below the Ar25 set point the compressors are switched
off; when outside air temperature is higher than Ar25 set point + the Ar26 differential the
compressors are switched on.
Anti-freeze/support heater 2:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 + Ar24 time
regulation probe < Heating set point – (ST04 / 2) or real Heating set point – (ST04 / 2)
(if Energy saving or Dynamic set point or function for units without water storage tank
are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
Ar24 delay time starts when Ar23 is elapsed.
If the outside temperature exceeds Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded.
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
If the outside air temperature falls below the Ar25 set point the compressors are
switched off; when outside air temperature is higher than Ar25 set point + the Ar26
differential, the compressors are switched on.
Heating Control Ar20=1
Anti-freeze/support heater 1:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 time
regulation probe < Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
When the heather is switched on, the compressor and condenser fans are switched off.
If the outside temperature exceeds Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
If the outside air temperature exceeds the Ar21 + Ar22 the heater is switched off and the
compressor and fans are switched on (if the heat regulator calls for it).
Anti-freeze/support heater 2:
Heather ON if:
outside air temperature < Ar21 for more than Ar23 + Ar24 time
regulation probe < Heating set point – (ST04 / 2) or real Heating set poinf – (ST04 / 2)
(if Energy saving or Dynamic set point or function for units without water storage tank
are enabled)
Ar23 delay time starts when outside temperature falls below Ar21 set point.
Ar24 delay time starts when Ar23 is elapsed.
If the outside temperature exceeds Ar21 + Ar22 when the counting of Ar23 is running,
the boiler function is not enabled and the Ar23 time is re-loaded.
Heather OFF if:
outside air temperature > Ar21 + Ar22
regulation probe > Heating set point or real Heating set poinf (if Energy saving or
Dynamic set point or function for units without water storage tank are enabled)
M
AINTENANCE
F
UNCTION
The maintenance warning is activated if the compressor 1, compressor 2, evaporator
water pump / supply fan (air/air unit), condenser water pump have worked for a time set
by parameter (CO14, CO15, CO16 and CO28).
The maintenance alarm code are:
A13=comp.1, A14=comp.2, A15=water pump or supply fan, A20=condenser pump.
The maintenance warning is only a visual signaling and does not influence the
regulation.
To reset the warning is necessary to set the operating hours at zero value in the menù
function.
B
LACK
O
UT
After a black-out:
1.
the controller restarts from the pervious status.
2.
The defrost cycle is stopped.
3.
All the working time delay will be reloaded.
