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31 

GB 

10. Specifications 

10-1. Product functions 

•  This controller can control up to 50 air conditioners and LOSSNAY with a daily schedule either 

collectively or in groups.   

•  This controller has only a schedule setting function and must be used with another system 

controller. When used independently, only the air conditioner's ON/OFF status and error status 

will be monitored (operation status display). In addition to schedule setting, the units can be 

turned ON/OFF and stopped and the timer can be reset either collectively or in groups with switch 

operations. 

The details of the functions are listed below. 
<List of system remote controller functions> 

Function Details 

ON/OFF

 

ON/OFF operations can be carried out collectively or for each group.

 

Operation

 

Timer reset (*4)

 

The timer setting details can be disabled collectively.

 

Setting details

 

ON/OFF 
COOL/HEAT 
Room temperature adjustment (TEMP.) 
Operation prohibit (ON/OFF, operation mode, setting temperature)

 

Number of settings 

Number of setting patterns: 9 
(Operation for a week can be set by selecting one of nine patterns for each 
day.) 
Number of operations: Up to 16 operations can be set in one pattern. 

Timer

Time setting unit 

The item can be set in five-minute units. 

Time 

The current time and day can be displayed. 

Error 

The address of the faulty unit and the error code are displayed on the LCD. 

Normal 

functions

 

Monitor

ON/OFF status (*5) 

The ON/OFF status of the unit is displayed on the LCD when GROUP is 
selected. 

Group setting 

Set the unit (indoor unit, LOSSNAY, remote controller, slave system 
controller) group. 

Operation

 

Interlocked unit setting 

Set the LOSSNAY and indoor unit interlock. 

Master system 

controller/Slave system 

controller (*1) 

Set the master and slave system controllers. 

Operation prohibit setting

Enable/disable 

Set whether to prohibit operation with the local remote control using this 
controller or with another controller. 

Celsius/Fahrenheit display Set the set temperature display to a Celsius or Fahrenheit display. 

Prohibit range 

To prohibit an operation, set whether to prohibit only the remote controller or 
to also prohibit the other controllers. 

System remote control own 

address 

Set the schedule timer's address (Refer to the Installation Manual.) 

External input 

Emergency stop level input, ON/OFF level input, ON/OFF and operation 
prohibit/enable pulse input 

Default  

setting 

function

 

System

(*3)

 

External output 

ON/OFF status output, error/normal state output 

Indoor unit, LOSSNAY 

Maximum 50 units 

Number of indoor units and 

LOSSNAY in one group 

1 to 16 units (The indoor unit and LOSSNAY cannot be registered in the same 
group.) 

Number of local remote 

controls in one group 

0 to 2 units 

Number of system 

controllers that can be 

controlled by one group (*2)

0 to 4 units (Note that this includes the number of local remote controllers 
used in one group) 
0 to 3 units in a group having one local remote controller 

System 

limits

 

Number of 

registered 

units 

Number of indoor units 

interlocked with one 

LOSSNAY 

0 to 16 units 

(*1)  Refer to page 30. 
(*2)  This controller (schedule timer) is one of the system controllers. 
(*3)  Refer to page 28. 
(*4)  Check the operation status (operation mode, set temperature, etc.) of other air conditioners with the system 

controller being used. 

(*5)  These displayed details are the schedule setting details. These are not the air conditioner operation status 

monitor details. 

 

Summary of Contents for PAC-YT34STA

Page 1: ......

Page 2: ... input mode 17 6 1 3 ON OFF operation prohibit permit pulse input mode 18 6 2 External output 18 7 Initial settings 19 7 1 When this controller is master system 19 7 1 1 Setting the group 21 7 1 2 Setting the interlocked units 24 7 1 3 Collective deletion 28 8 Setting the functions 28 8 1 Using with master system controller 28 8 2 Using the external input output function 29 8 3 Disabling the local...

Page 3: ...in electric shocks or faults Do not operate switches with wet hands Touching the controller with wet hands could result in electric shocks or faults Do not use for special applications This product is intended for use with the Mitsubishi Electric building air conditioning control system Do not use for the control of other air conditioners or for other applications Failure to observe this could res...

Page 4: ...LAY Indicates which mode is selected COLLECTIVE COLLECTIVE STATUS DISPLAY Screen GROUP GROUP STATUS DISPLAY Screen 2 COLLECTIVE ON OFF LAMP ON One or more group is running Also ON when a sequential unit is running OFF All groups are stopped Flicker Registered air conditioner is malfunctioning 3 COLLECTIVE ON OFF SWITCH COLLECTIVE STATUS DISPLAY SCREEN GROUP STATUS DISPLAY SCREEN If pressed when al...

Page 5: ...e displayed group s operation status is displayed 5 CURRENT DAY DISPLAY The current day is displayed 6 CONTROL STATUS DISPLAY The currently controlled state is displayed 7 CURRENT TIME DISPLAY The current time is displayed 8 ERROR CODE DISPLAY If an error is occurring the need for inspection is indicated and the error code 4 digit is displayed 9 OPERATION DETAILS DISPLAY The details of schedule op...

Page 6: ... OFF Select ON OFF or no setting Use this to start or stop the group independently or collectively Operation changeover Select cooling heating or no setting Set Temperature Select set temperature or no setting Prohibit Select operation prohibit enable or no setting 5 DAY SWITCH Use this switch to change the day for the TIME DAY SETTING and WEEKLY PROGRAM SETTING 6 DAY PATTERN SWITCH Use this switc...

Page 7: ...SCREEN When this controller is the master the group is set and changed 3 TIME DAY SETTING SCREEN The current time and day are set 4 NORMAL SCREEN After setting the schedule schedule operation is carried out with this screen In addition to schedule operation the units can be started and stopped collectively or in groups 5 PROGRAM MONITOR SCREEN The set program contents are monitored 6 PROGRAM SETTI...

Page 8: ...Enable 1 16 21 00 OFF ON OFF With operation 1 cooling with the air conditioner is started at 08 15 operation is continued at 29 C and adjustment of the room temperature with the local remote controller is prohibited 1 9 00 ON 27 C Room temp adjustment 2 16 22 00 OFF ON OFF 1 8 30 ON Heat 22 C Room temp adjustment 9 16 21 30 OFF ON OFF 3 Setting of weekly program Set the schedule pattern set in ste...

Page 9: ... operation state Room temperature adjustment ON OFF Room temperature adjustment ON OFF ON OFF 8 15 10 00 10 15 12 00 13 00 15 00 15 15 17 00 21 00 24 00 29 C cool 27 C cool 25 C cool NOTE 1 Even if a schedule operation is being executed from this controller the air conditioner can be operated using the local remote controller 2 Operations when operation prohibit is set If operation prohibit is set...

Page 10: ...rn No Operation prohibit state Operation mode changeover limit state 4 1 1 Group selection operation 1 Press the GROUP and switches to select the group to be operated The group No displayed at the group No display section will change as shown below each time the GROUP switch is pressed Collective 1 2 3 50 The group No will change in reverse each time the GROUP switch is pressed When the GROUP and ...

Page 11: ...r stopped from this controller 2 If operation mode changeover limit cooling limit is set from another system controller will flicker will flicker when operation mode changeover limit heating limit is set 4 2 PROGRAM MONITOR screen The set program details are monitored Operation time Operation No Operation details Pattern No Monitoring the set program details 1 Open the PROGRAM MONITOR screen Press...

Page 12: ...play section will flicker in the order of Sunday Monday Tuesday Saturday Sunday each time the DAY switch is pressed 4 Set the time notification The display at the time notification setting and display section will change as shown below each time the MODE switch is pressed No display ON Set this to ON when a time notification is to be issued 5 The set clock day and time notification can be cleared ...

Page 13: ...h time the ON OFF switch is pressed Set to No display if this setting is not required 2 Set the operation mode The mode will change as shown on the right each time the MODE switch is pressed Set to No display if this setting is not required 3 Set the temperature 1 The temperature will change as shown below each time the TEMP switch is pressed The temperature will change continuously in 1 increment...

Page 14: ...g the details of a pattern setting All of the operation details of a set pattern can be copied into another pattern Example The details set for pattern 1 can be copied to pattern 2 In this case the contents of pattern 2 will be overwritten 1 Select the pattern number to be copied and display in the display section 2 Hold down the DAY PATTERN switch for two or more seconds The details set for the c...

Page 15: ...ation pattern can be set for a group consisting only of cooling dedicated models When setting a weekly program check the unit models in the group and the pattern setting details 3 Selecting the set day The pattern No displayed at the weekly pattern setting No display will change in the following order each time the DAY switch is pressed The selected day pattern will flicker Sunday Pattern No Monda...

Page 16: ...EEN is displayed only the details of the error for the currently selected group will appear Confirming the details on an error for a different group Using the GROUP switch select the group with the error and check the displayed error details NOTE If an error occurs in a group other than that displayed on the GROUP STATUS DISPLAY SCREEN the COLLECTIVE ON OFF lamp will flicker 5 2 When only the Erro...

Page 17: ...flicker NOTE 1 The timer is invalid while this mode is input and the schedule function will stop 2 When this mode is cancelled the timer will be validated and schedule operation will resume The schedule following the current time will be started 6 1 2 ON OFF level signal input mode If the ON OFF level signal is input in the external input interface all air conditioners and LOSSNAY units being cont...

Page 18: ...tted will flicker when prohibit is input will turn OFF when permit is input will light up when ON is input will turn OFF when OFF is input NOTE 1 The timer is valid even when this mode is input and the schedule operation will be executed 2 The prohibit permit setting range follows the DIP SW3 5 setting state Refer to section 8 Setting the functions for details on the DIP switches 6 2 External outp...

Page 19: ... Interlocked unit setting Open the Initial Setting Mode Screen to make these settings 1 The following display will appear when the power to this controller is turned ON H0 on the group No display section and the COLLECTIVE ON OFF lamp will flicker 2 When group setting information is already set During system startup communication H1 will flicker at the group No display section When system startup ...

Page 20: ...erlocked unit setting information etc with this step and then carry out system startup communication The Group Setting Monitor Screen will open when completed Refer to step 2 If no operations are made on this screen for ten minutes the display will automatically switch to the Normal screen Note that if the group setting information has not been saved the screen will not change automatically NOTE D...

Page 21: ...ROUP switch is pressed The numbers will display in reverse when the switch is pressed 2 After the group is selected if a unit is registered in the group the minimum address No unit will appear The attributes for that group will appear after two seconds Operation No display section Address No Pattern No display section Address No attributes Displayed details Example When groups 1 and 2 are not regi...

Page 22: ...lay 3 Registering the unit into a group 1 Register the unit selected in step 2 into a group With the group No and unit address selected in steps 1 and 2 displayed press the ON OFF switch The registration process will be completed with this step The address No and attributes will appear when correctly registered Operation No display section The address No is displayed Pattern No display section The...

Page 23: ...once Press PROHIBIT switch once Press PROHIBIT switch once For SC if registered in another group the pattern No section attributes will flicker 3 If a single unit is not registered will display 5 Deleting a unit from a group 1 Using steps 1 and 2 call out the address No of the unit to be deleted When the CLEAR switch is pressed twice in this state the unit registered in the group will be deleted P...

Page 24: ... in a certain group are to be linked always register the indoor unit with the smallest address No in the group for interlocking If the unit is not registered for interlocking the interlocked unit cannot be operated with the local remote controller If there are several indoor units to be linked with the interlocked unit register all indoor units for interlocking 1 Calling the Interlocked Unit Setti...

Page 25: ...ed Unit Setting Screen group 2 Operation No display section A unit is not registered in group 1 so is displayed Press switch once 3 Calling the registration unit Call the address No of the indoor unit to be interlocked with a registered interlocked unit by pressing the ON OFF switch 4 Selecting the interlocked unit s address No Set the address No of the interlocked unit to be registered with the i...

Page 26: ...terlocked unit Carry out steps 2 3 4 and 5 to register a different indoor unit to a different interlocked unit 6 Searching for interlocked units Search to find which indoor unit the interlocked unit is linked to 1 Carry out step 4 to display the address No of the interlocked unit for which the setting is to be confirmed Select the interlocked unit with the PROHIBIT switch The indoor unit address o...

Page 27: ...unit is linked to the interlocked unit Operation No display section is displayed 7 Canceling the interlock setting Cancel the interlock setting of the indoor unit and interlocked unit 1 Call out the screen displayed after the interlocked unit is set or the screen on which the interlocked unit was searched Displays alternately 2 The interlock setting will be cancelled when the CLEAR switch is press...

Page 28: ...splay section respectively H0 flickers at the pattern No display section During collective deletion communication process Initial state 8 Setting the functions Function setting switch Remote controller main unit 8 1 Using with master system controller When connecting multiple system controllers the system controller with many functions is designated as the master and the system controller with few...

Page 29: ...en more than one air conditioner is running and the Error Occurrence signal is output when an error is occurring in more than one air conditioner Please refer to the Installation Manual for details 8 3 Disabling the local remote controller s operations from this controller Resetting of the filter sign with the manual remote control can be disabled Setting details Switch setting Disable SW3 4 OFF E...

Page 30: ...em controller In this case the group is not set with this controller NOTE The following types of group settings are not possible Master system controller Slave system controller Group Group Group Master system controller 1 Master system controller 2 Group Group Group Master system controller 1 Slave system controller Group Group Group Master system controller 2 Group Control by the slave system co...

Page 31: ...rlocked unit setting Set the LOSSNAY and indoor unit interlock Master system controller Slave system controller 1 Set the master and slave system controllers Operation prohibit setting Enable disable Set whether to prohibit operation with the local remote control using this controller or with another controller Celsius Fahrenheit display Set the set temperature display to a Celsius or Fahrenheit d...

Page 32: ... supplied from outdoor unit or power supply unit for transmission line type PAC SC34KUA Power consumption 1W Working environment conditions Temperature 0 to 40ºC humidity 30 to 90 RH with no dew condensation Weight 0 2kg Outline dimensions H W D 120 x 130 x 18 ...

Page 33: ...ails Operation No Set time Set details 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 Pattern 3 Pattern 4 Operation No Set time Set details Operation No Set time Set details 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 ...

Page 34: ...ils Operation No Set time Set details 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 Pattern 7 Pattern 8 Operation No Set time Set details Operation No Set time Set details 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 ...

Page 35: ...35 GB Setting data record sheet Pattern 9 Operation No Set time Set details 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...

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