Carrier 30RA/RH, 30RY/RYH manual Information Menu, Format Units Description

INFORMATION MENU (3) continued

ITEM	FORMAT	UNITS	DESCRIPTION
14	±nn.n	°C	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.
15	±nn.n		Control point. This is the setpoint used by the controller to adjust the temperature of the leaving or entering water (according to
	Forc	°C	configuration).
			Control point = active setpoint + 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.
16	±nn.n	°C	Controlled water temperature. Water temperature that the unit tries to maintain at the control point.

1This item is masked when nil.

2This item is displayed in certain unit configurations only.

3Access to this menu is read-only except for item 10 that can be forced when the unit is in Local operating type.

DESCRIPTION OF OPERATING MODES (ITEM 1 OF THE INFORMATION MENU)

MODE #	MODE NAME	DESCRIPTION
1	Delay at start-up active	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.
2	2nd cooling/heating setpoint active	The second cooling/heating setpoint is active. See section 5.6.1
3	3rd heating setpoint active	The third heating setpoint is active. See section 5.6.1
4	Setpoint reset active	In this mode, the unit uses the reset function to adjust the leaving water temperature setpoint. See section 5.6.
5	Auto heating/cooling changeover	If the unit is in auto mode, the heating/cooling changeover is automatic, based on the outdoor temperature. See
	active	section 5.2.
6	Demand limit active	In this mode, the demand at which the unit is authorised to operate is limited. See section 5.7.
7	Ramp loading active	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).
8	Water or air heat exchanger	The water or air heat exchanger heater is active. See section 5.5.
	heater active
9	Evaporator pump reversal in effect	The unit is fitted with two evaporator water pumps and reversal between pumps is in effect. See section 5.3.
10	Evaporator pump periodic start	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.
11	Night condensing mode	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, 13	Low suction temperature protection	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, 15	High pressure protection	14 = circuit A & 15 = circuit B. The unit is in cooling or heating mode. 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, 17	Defrost	16 = circuit A & 17 = circuit B. The unit is in heating mode, and the defrost sequence is active on the relevant
		circuit.
18	Low water entering temperature	The unit is in heating mode and compressor start is not authorised, as the entering water temperature is below
	protection in heating mode	10°C.
19, 20	Hot gas protection in heating mode	19 = circuit A & 20 = circuit B. The unit is in heating protection mode and hot gas discharge protection is active. In
		this mode, the circuit capacity cannot increase, and the circuit may be unloaded or go into defrost mode.
21, 22	Low suction temperature protection	21 = circuit A & 22 = circuit B. The unit is in heating mode and low suction temperature protection is active. In this
	in heating mode	mode, circuit capacity is not authorised to rise and the circuit can be unloaded or go into defrost mode.
23	Boiler active	The unit controls a boiler and this is operating. See section 5.13.
24	Electric heating stages active	The unit controls additional electric heating stages, and these are operating. See section 5.12.
25	Unit in SM control	Unit is in control of a System Manager (FSM, CSM III or HSM).
26	Master/slave link active	Unit is connected to a secondary unit by a master slave link and the master/slave modes are active.
27	Low outside temperature protection	The unit is in heating mode, and compressor start-up is not permitted, when the outside air temperature is lower
		than the value configured in item 12 of the User 1 configuration menu. See the relevant section.

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