15
DESCRIPTION
The delay at start-up operates after the unit has been switched on. If the delay has not expired, the mode is
active. The delay is configured in the User Configuration 1 menu.
The second cooling/heating setpoint is active. See section 5.6.1
The third heating setpoint is active. See section 5.6.1
In this mode, the unit uses the reset function to adjust the leaving water temperature setpoint. See section 5.6.
In this mode, the demand at which the unit is authorised to operate is limited. See section 5.7.
Ramp loading is active. In this mode, the rate of water temperature drop or rise (heating mode) in °C/min is
limited to a preset value in order to prevent compressor overloading. Ramp function must be configured (see
User Configuration 1 menu). Ramp values can be modified (see Setpoint menu).
The unit is fitted with two evaporator water pumps and reversal between pumps is in effect. See section 5.3.
The unit is fitted with two condenser water pumps and reversal between pumps is in effect. See section 5.3.
The unit is stopped and the pump is started each day at 14.00 p.m. for two seconds. This function needs to be
configured in the User Configuration 1 menu. See section 5.3 & 4.3.11.3.
The unit is stopped and the pump is started each day at 14.00 p.m. for two seconds. This function needs to be
configured in the User Configuration 1 menu. See section 5.3 & 4.3.11.3
The night mode is active. Fan runs at low speed (if permitted by operating conditions) and unit capacity can be
limited. See section 5.8 & 4.3.11.3.
12 = circuit A & 13 = circuit B. Protection for evaporator low suction temperature circuit is active. In this mode,
circuit capacity is not authorised to rise and the circuit can be unloaded.
14 = circuit A & 15 = circuit B. The circuit is in high pressure protection mode because the HP protection threshold
has been exceeded. Circuit has been unloaded and the circuit capacity is not authorised to rise.
16 = circuit A & 17 = circuit B. Hot gas discharge protection is active. In this mode, the circuit capacity cannot
increase, and the circuit may be unloaded.
The unit unloads, when it is in heating mode and the evaporator water temperature goes beyond the authorised
thresholds.
The unit controls a boiler and this is operating. See section 5.13.
Unit is in control of a System Manager (FSM, CSM III or HSM).
Unit is connected to a secondary unit by a master slave link and the master/slave modes are active.
MODE #
MODE NAME
1
Delay at start-up active
2
2nd cooling/heating setpoint active
3
3rd heating setpoint active
4
Setpoint reset active
5
Demand limit active
6
Ramp loading active
7
Evaporator pump reversal in effect
8
Condenser pump reversal in effect
9
Evaporator pump periodic start
10
Condenser pump periodic start
11
Night condensing mode
12, 13
Low suction temperature protection
14, 15
High pressure protection
16, 17
Hot gas protection
18
Low water temperature protection
in heating mode
19
Boiler active
20
Unit in SM control
21
Master/slave link active
INFORMATION MENU (3) continued
ITEM
FORMAT
UNITS
15
±nn.n
°C
16
±nn.n
Forc
°C
17
±nn.n
°C
1
This item is masked when nil.
2
This item is displayed in certain unit configurations only.
DESCRIPTION OF OPERATING MODES (ITEM 1 OF THE INFORMATION MENU)
DESCRIPTION
Active setpoint. This is the current cooling/heating setpoint: it refers to cooling setpoint 1 or cooling/heating setpoint 2. See section
5.6.1.
Control point. This is the setpoint used by the controller to adjust the temperature of the leaving or entering water (according to
configuration).
Control point = active se reset. See section 5.6
The value is displayed in turn with 'Forc' when the unit is in CCN control and if this variable if forced through CCN.
Controlled water temperature. Water temperature that the unit tries to maintain at the control point.
