Carrier AQUASNAP 30RA/RH Operation & Maintenance Instructions Manual

Carrier AQUASNAP 30RA/RH Operation & Maintenance Instructions Manual Manual pdf 10 page image

10The summary interface (right hand section) includes a mimicdiagram of the unit, together with push-buttons and LEDs. Itgives quick access to the main operating parameters of the unit.SUMMARY INTERFACE LEDs*LED INDICATION WHEN LITGreen LED:The unit is authorised to start or is already runningRed LED:- Lit: circuit A or unit shut down by alarm- Flashing: circuit A or unit running with alarm presentRed LED:- Lit: circuit B or unit shut down by alarm- Flashing: circuit B or unit running with alarm presentRed LED:Water flow switch default or user safety lock open.Green LED:The evaporator pump is running.Yellow LEDs:From top to bottom - start/stop status of compressor A1, A2 and A3or B1, B2 and B3. Flashing LED indicates that the circuit is in theprotection or defrost mode (A or B).Green LED:The unit operates in heating mode.Green LED:The unit operates in cooling mode.* Not available on the PRO-DIALOG Junior interface.SUMMARY INTERFACE PUSH BUTTONS*BUTTON DISPLAYBlue button: evaporator leaving or entering water temperature in °CGray button: outdoor air temperature in °CControl point (setpoint + reset) in °CPress 1: circuit A/B discharge pressure in kPaPress 2: circuit A/B saturated condensing temperature in °CPress 1: circuit A/B suction pressure in kPaPress 2: circuit A/B saturated suction temperature in °CPress 1: compressor A1/B1 operating hours in h/10 or h/100Press 2: compressor A2/B2 operating hours in h/10 or h/100Press 3: compressor A3/B3 operating hours in h/10 or h/100* Not available on the PRO-DIALOG Junior interface.4.2 - Unit start/stop control4.2.1 - DescriptionThe unit start/stop can be controlled by one of the followingmethods:• Locally on the actual unit (Local control type)• By remote control with the aid of user contacts (remotecontrol type)• By CCN control with the aid of the CCN (CCN controltype)The main interface includes a Start/Stop button which can beused to stop or start the unit in the local operating type or toselect the remote or CCN operating type.The available operating types are described in the followingtable.The following operating types can be selected using theStart/Stop button:OPERATING TYPES4 DIGIT DISPLAY DESCRIPTIONLOFF Local Off. The unit is halted in local mode.L-On Local On. The unit is in local control mode and isauthorised to start.L-Sc* Local On - timer control. The unit is in local controlmode. It is authorised to start if the period is occupied.If the timer program for unit operation is unoccupied,the unit remains shut down until the period becomesoccupied.CCN* CCN. The unit is controlled by CCN commands.rEM* Remote. The unit is controlled by remote controlcontacts.MAST* Master Unit. The unit runs as a master in a two unitlead/lag arrangement. This is displayed if the unit isconfigured for master/slave control.Legend* Displayed if the configuration requires it.Section 5.1 gives a more detailed description of the commands to start/stopthe unit, analysed by operating type.4.2.2 - Stopping the unit in local modeThe unit can be stopped in local mode at any time by pressingthe Start/Stop button.TO STOP THE UNITBUTTON ACTION 2-DIGIT DISPLAY 4-DIGIT DISPLAYPress the Start/Stop C LOFFbutton for less than4 seconds (one shortpress is enough).If the button is t LOFFreleased, the unit stopswithout the need forfurther action.4.2.3 - Starting unit and selecting an operating typeThe unit can be started in local mode, or unit operating typecan be changed at any time using the Start/Stop button. In theexample that follows, the unit is stopped (LOFF) and the userwants to start the unit in local mode.BUTTON ACTIONThe unit is in local stop mode. Thepreviously used operating type is local on(L-ON)Press the Start/Stop button for 4 seconds(one short press-down is sufficient). L-ONilluminates immediately. "C" flashes in the2-digit display to show that the controller isawaiting confirmation.Press the Enter button to confirm theoperating type. "t" is displayed in the 2-digitdisplay to indicate the operating typeselected. If the Enter button is not pressedsoon enough, the controller will cancel thechange and remain in the stop mode.2-DIGIT 4-DIGITDISPLAY DISPLAYLOFFL-Ont L-OnSTART UP WITH THE PREVIOUSLY USED OPERATING TYPE WHEN THE UNITIS STOPPED IN LOCAL MODE (LOFF)