Carrier 30GK manual Description of the Temperatures menu, Description of the Pressures menu

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

MODE # MODE NAME		DESCRIPTION
7	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 User1 configuration menu.
8	2nd cooling setpoint active	The second cooling setpoint is active. See section 5.7.1
9	Setpoint reset active	In this mode, the unit uses the reset function to adjust the leaving or entering water temperature setpoint. See
		section 5.7.2.
10	Demand limit active	In this mode, the capacity at which the unit is allowed to operate is limited. See section 5.8.
11	Ramp loading active	Ramp loading is active. In this mode, the controlled high or low water temperature value (in °C/min) in heating mode
		is limited to a preset value in order to prevent compressor overload. The ramp function must be configured (see
		User1 configuration menu). The ramp values can be modified (see setpoint menu).
12	Low entering water temperature	The unit is in heating mode and the temperature of the evaporator leaving water is lower than the lesser of the two
	protection in heating mode	cooling setpoints. A capacity stage is removed. This mode only applies to heat pumps.
13,14	Low suction temperature protection	13 = circuit A & 14 = circuit B. Protection for evaporator suction low temperature circuit is active. In this mode, circuit
		capacity is not authorised to rise if the unit is in cooling mode, and saturated suction temperature in the circuit is
		lower by more than 13°C at the leaving chilled water and lower than the frost protection threshold.
15,16	Low discharge superheat protection	15 = circuit A & 16 = circuit B.
		In this mode the circuit capacity is shut down by pumpout and not allowed to restart, when the low superheat alarm
		conditions are satisfied. During the shutdown/start-up sequence, mode 15 or 16 is active. See descriptions for
		alarms 48 and 49.
17,18	High pressure protection	17 = circuit A & 18 = circuit B. The circuit is in high pressure protection mode because the HP protection threshold
		has been exceeded. The circuit capacity is not authorised to rise and any slave compressor can be stopped in order
		to prevent a high pressure break.
19,20	Not used
21	Heat reclaim active	Circuit A or circuit B operates in heat reclaim mode and not in standard cooling mode (pumpdown phase is
		activated).
22	Evaporator heater active	Mode active if risk of frost exists.
23	Evaporator pump reversal active	Two evaporator water pumps installed on the unit and pump reversal is active. See section 5.3
24	Periodic evaporator pump start-up	The unit is shut down and is started every day at 14:00 hours for 2 seconds. This function must be configured in the
		User1 menu. See sections 5.3 and 4.5.7.3.
25	Low night-time capacity	Unit capacity is limited. The period when this mode starts, as well as the limited capacity in night-time mode are
		controlled in Client1 menu.
26	Unit under SM control	Unit is under control of a System Manager (FSM or CSM III).
27	Master/slave link active	Unit is connected to a secondary unit by a master slave link and either:
		- the unit is configured as a master and this master is operating, or
		- the unit is configured as a slave and this slave is operating.

4.5.2 - Description of the Temperatures menu

TEMPERATURES MENU [2]

ITEM	FORMAT UNITS		COMMENTS
0	±nn.n	°C	Evaporator entering water temperature
1	±nn.n	°C	Evaporator leaving water temperature
2[1]	±nn.n	°C	Condenser entering water temperature
3[1]	±nn.n	°C	Condenser leaving water temperature
4[1]	±nn.n	°C	Reclaim condenser entering water temperature
5[1]	±nn.n	°C	Reclaim condenser leaving water temperature
6	±nn.n	°C	Saturated discharge temperature circuit A
7	±nn.n	°C	Saturated suction temperature circuit A
8	±nn.n	°C	Suction temperature compressor A1
9	±nn.n	°C	Superheat circuit A
10[1]	±nn.n	°C	Saturated discharge temperature circuit B
11[1]	±nn.n	°C	Saturated suction temperature circuit B
12[1]	±nn.n	°C	Suction temperature compressor B1
13[1]	±nn.n	°C	Superheat circuit B
14[1]	±nn.n	°C	Outdoor temperature
15[1]	±nn.n	°C	Water loop temperature, master/slave assembly

Legend

1This item is displayed in certain unit configurations only

2Access to this menu is read-only.

4.5.3 - Description of the Pressures menu

PRESSURES MENU [2]

ITEM	FORMAT	UNITS	COMMENTS
0	nnnn	kPa	Discharge pressure circuit A
1	nnnn	kPa	Suction pressure circuit A
2	nnnn	kPa	Differential oil pressure compressor A1
3	nnnn	kPa	Discharge pressure circuit B
4	nnnn	kPa	Suction pressure circuit B
5	nnnn	kPa	Differential oil pressure compressor B1
6[1]	nnnn	kPa	Differential oil pressure compressor A2
7[1]	nnnn	kPa	Differential oil pressure compressor A3
8[1]	nnnn	kPa	Differential oil pressure compressor A4
9[1]	nnnn	kPa	Differential oil pressure compressor B2
10[1]	nnnn	kPa	Differential oil pressure compressor B3
11[1]	nnnn	kPa	Differential oil pressure compressor B4
12[1]	nnnn	kPa	Pumpdown pressure, heat reclaim, circuit A
13[1]	nnnn	kPa	Pumpdown pressure, heat reclaim, circuit B

Legend

1This item is displayed in certain unit configurations only.

2Access to this menu is read-only

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