Carrier 30GX Installation, Operation And Maintenance Instructions

Also see for 30GX Series: Installation, operation and maintenance instructions Installation, operation and maintenance instructions

15MODE # MODE NAME DESCRIPTION1 Local Off The unit has stopped in local mode because operating typeLocal Off (LOFF) has been selected with the operatingtype selector button.2 CCN Off The unit has stopped in CCN mode because operatingtype CCN (CCn) has been selected with the operatingtype selector button and either:• the unit has received a CCN halt command, or• the controller has received a start command over thenetwork but the start/stop remote control is authorised inCCN mode and the controller has received a haltcommand from a volt-free contact connected to thecustomer terminal block (see note, section 5.1).3 Remote off The unit has stopped in remote mode because operatingtype Remote Control (rEM) has been selected with theoperating type selector button and the unit has received ashutdown command from volt-free contacts. See section3.4.3, description of start/stop contact.4 Local The unit is authorised to start up in local mode becauseOperation operating mode Local Operation (L-C1 or L-C2 or L-H orLC1r or LC2r) has been selected with the operating typeselector button.5 CCN The unit is authorised to start up in CCN mode becauseOperation operating type CCN (CCn) has been selected with theoperating type selector button and the unit has received aCCN start command, and either:• the start/stop remote control is not authorised in CCNmode, or• the start/stop remote control is authorised in CCNmode and the controller has received a start commandfrom a volt-free contact connected to the customerterminal block (see note, section 5.1).6 Remote The unit is authorised to start up in remote mode becauseOperation operating type Remote Control (rEM) has been selectedwith the operating type selector button and the unit hasreceived a start command from volt-free contacts. Seesection 3.4.3, description of start/stop contact.7 Delay at The delay at start-up is active after the unit has beenstart-up active switched on or after the unit has been stopped. If thepause has not expired the mode is active. The delay can beconfigured in the configuration menu.8 2nd cooling The second cooling setpoint is active because one of thesetpoint active following conditions has been met:• Operating type Local Operation - Cooling Setpoint 2(L-C2) has been selected;• The unit is in operating type CCN (CCn) and hasreceived a network command to use cooling setpoint 2;• The unit is in operating type Remote (rEM) andcooling setpoint 2 has been selected with remotecontacts. See section 3.4.4, description of setpointselection contact.9 Setpoint reset Setpoint reset is active. In this mode, the unit uses theactive reset function to adjust the leaving water temperaturesetpoint. Depending on the configuration, the setpoint canbe reset by reference to:• An external 0-10 V d.c. signal (supplied by customeror 0-10 V d.c. temperature sensor);• The difference in temperature between water leavingand returning to the evaporator (cooling) or condenser(heating); For the reset function to be activated it mustbe configured (see section 4.2.10). Mode 9 is onlyactive if the reset value calculated by the system isnon-zero.10 Demand Demand limit is active. In this mode, the demand atlimit which the unit is authorised to operate is limited byactive reference to either:• An external 0-10 V d.c. signal (supplied by customer)or• A volt-free contact.For the demand limit function to be activated it must beconfigured (see section 4.2.10). Mode 10 is only active ifthe machine demands capacity greater than the limit value.11 Ramp loading Ramp loading is active. In this mode, the rate of tempera-active ture drop (cooling mode) or rise (heating mode) in °C/minin the active heat exchanger leaving water is limited to apreset value in order to prevent compressor overload. Theramp values can be modified (see section 4.2.7).12 Low temp. The unit is in heating mode and the temperature of theprotection evaporator leaving water is lower than the lesser of the twoheating mode cooling setpoints. A capacity stage is removed. This modeonly applies to heat pumps.13 + 14 Low suction 13 = circuit A & 14 = circuit Btemperature Protection for evaporator suction low temperature circuitprotection is active. In this mode, circuit capacity is not authorised torise if the unit is in cooling mode, and saturated suctiontemperature in the circuit is lower than the frost protectionthreshold.15 + 16 Low discharge 15 = circuit A & 16 = circuit Bsuperheat In this mode the circuit capacity is not authorised to rise.protection17 High pressure Circuit A is under high pressure protection because the HPprotection protection threshold has been exceeded. Circuit capacity iscircuit A not authorised to rise, and any slave compressors may bestopped in order to prevent a high pressure break.18 High pressure Circuit B is under high pressure protection because theprotection HP protection threshold has been exceeded. Circuitcircuit B capacity is not authorised to rise, and any slavecompressors may be stopped in order to prevent a highpressure break.19 Unit under Unit is under control of a System Manager (FSM or CSMIII)SM control20 Master/slave Unit is connected to a secondary unit by a master/slavelink active link and either:• The unit is configured as a master and this master isoperating, or• The unit is configured as a slave and the master isoperating.21 + 22 Liquid level (21 = circuit A & 22 = circuit B)reset Active, if there is a large difference between leaving watercircuit B temperature and SST4.2.4 - Description of the INFORMATION menuThis menu is used to display the unit’s main operatingparameters.ITEM FORMAT DESCRIPTION0 Displays active operating typeLOFF Local OffL-C1 Local On - Cooing setpoint 1L-C2 Local On - Cooing setpoint 1L-H Local On - heating setpointLC1r Local On - Cooling setpoint 1 - Reclaim)LC2r Local On - Cooling setpoint 2 - Reclaim)CCn CCN ControlrEM Remote Control1 n 1 n 2 n 3 n 4 Displays active modes:n 1n2 = 1st active moden 3n4 = 2nd active mode2*** n 1 n 2 n 3 n 4 Displays active modes:n 1n2 = 3rd active moden 3n4 = 4th active mode3*** n 1 n 2 n 3 n 4 Displays active modes:n 1n2 = 5th active moden 3n4 = 6th active mode4*** n 1 n 2 n 3 n 4 Displays active modes:n 1n2 = 7th active moden 3n4 = 8th active mode5*** n 1 n 2 n 3 n 4 Displays active modes:n 1n2 = 9th active moden 3n4 = 10th active mode6** Cool Heating/cooling operationHeat Cool/heat7 nn Number of active capacity stages8** nnn Present demand limit in %Inh Demand limit disabled in Local operating type9 nnn Total active capacity of unit in %10 nnn Total active capacity of circuit A in %11* nnn Total active capacity of circuit B in %12 ±nn.n Active setpoint in °C13** ±nnn Control point in °C14** nn.n Condensing or reclaim setpoint in °C15 n 1 n 2 Reserved for use by Carrier Service only16 n 1 n 2 n 3 n 4 Reserved for use by Carrier Service only17 ±nnn Heat reclaim mode indicator, circuits A/B18 n.n Reserved for use by Carrier Service only19 n.n Reserved for use by Carrier Service onlyKey:n : numerical display* : This item is displayed in certain unit configurations only.** : Under certain operating conditions this item flashes (in block 1 ofmain interface).*** : This item is not displayed when zero.Item 0 Displays active operating typeThis item displays the current operatingtype in text format.Items 1-2-3-4-5 Displays active modesEach of these items can display twoactive modes at the same time. The firsttwo figures display one mode and the lasttwo figures display another. These itemsenable up to 10 active modes to bedisplayed.For example: 510 means that modes 5 and10 are active. 11 means that mode 11 isactive.Description of modes: