6-1 Read before Test Run... 161 6-2 MA and ME Remote Controller Functions and Specifications ... 162 6-2-1 Function/Specification Comparison ... 162 6-2-2 Local Remote Controller Selection Tips... 162 6-3 Making the Group and Interlock Settings from an ME Remote Controller... 163 6-3-1 Overview ... 163 6-3-2 Address Registration... 163 6-3-3 Address Search ... 165 6-3-4 Address Deletion... 166 6-3-5 Making Group and Interlock Settings from Another Remote Controller... 166 6-4 Selecting Remote Controller Functions from an ME Remote Controller ... 167 6-5 Making Interlock Settings from an MA Remote Controller ... 169 6-5-1 MA Remote Controller (PAR-31MAA)... 169 6-5-2 MA Remote Controller (PAR-21MAA)... 170 6-5-3 MA Simple Remote Controller ... 172 6-6 Changing the Room Temperature Detection Position ... 175 6-7 Test Run Method... 176 6-7-1 MA Remote Controller (PAR-31MAA)... 176 6-7-2 MA Remote Controller (PAR-21MAA)... 178 6-8 Operation Characteristics and Refrigerant Charge ... 179 6-9 Evaluating and Adjusting Refrigerant Charge ... 179 6-9-1 Refrigerant Overcharge and undercharge ... 179 6-9-2 Checking the Refrigerant Charge during Operation... 179 6-9-3 The Amount of Refrigerant to Be Added... 180 6-9-4 Refrigerant Charge Adjustment Mode ... 185 6-10 The Following Symptoms Are Normal ... 187 6-11 Standard Operation Data (Reference Data) ... 188 6-11-1 Single Unit (Standard)... 188 6-11-2 Dual Unit Combination (Standard) ... 192 6-11-3 Single Unit (High COP Unit)... 203 6-11-4 Dual Unit Combination (High COP Unit) ... 207
6 Test Run
6 Test Run
6-1 Read before Test Run
(1) Check for refrigerant leak and loose cables and connectors.
(2) When opening or closing the front panel of the control box, do not let it come into contact with any of the internal components.
Before inspecting the inside of the control box, turn off the power, keep the unit turned off for at least 10 minutes, and check that the voltage across FT-P and FT-N terminals and SCP and SC-N terminals have dropped to 20 VDC or below. (It takes approximately 10 minutes to discharge electricity after the power is turned off.)
Control box houses high temperature parts. Be well careful even after turning off the power source.
Before starting maintenance work, disconnect the connector (CNINV) on the outdoor unit fan board and CN1 on the inverter board (or CNFAN2 on the capacitor board). Before connecting or disconnecting connectors, make sure that the outdoor unit fans are stopped and that the voltage of the main circuit capacitor is 20 VDC or below. If the outdoor unit fan is turned by strong winds, the main circuit capacitor will be energized and poses an electric shock hazard. Refer to the wiring diagram name plate for details.
To connect wiring to TB7, check that the voltage is 20 VDC or below.
After completion of maintenance work, reconnect the connector (CNINV) on the fan board and connector (CN1) on the invert- er board (or the connector (CNFAN2) on the capacitor board).
(3) Measure the insulation resistance between the power supply terminal block and the ground with a 500V megger and make sure it reads at least 1.0Mohm.
Do not operate the unit if the insulation resistance is below 1.0Mohm.
Do not apply megger voltage to the terminal block for transmission line. Doing so will damage the controller board.
The insulation resistance between the power supply terminal block and the ground could go down to close to 1Mohm imme- diately after installation or when the power is kept off for an extended period of time because of the accumulation of refrigerant in the compressor.
If insulation resistance reads at least 1 MΩ, by turning on the main power and keeping it on for at least 12 hours, the refrigerant in the compressor will evaporate and the insulation resistance will go up.
Do not measure the insulation resistance of the terminal block for transmission line for the unit remote controller.
(4) When the power is turned on, the compressor is energized even while it is not operating.
Before turning on the power, disconnect all power supply wires from the compressor terminal block, and measure the insula- tion resistance of the compressor.
Check the compressor for a ground fault. If the insulation resistance is 1.0 MΩ or below, connect all power supply wires to the compressor and turn on the power to the outdoor unit. (The liquid refrigerant in the compressor will evaporate by energiz- ing the compressor.)
(5) Make sure the valves on both the high-pressure and low-pressure sides are fully open.
Securely tighten the cap.
(6) Check the phase sequence and the voltage of the power supply.
When the voltage is out of the ±10% range, or when the phase voltage difference is more than 2%, please discuss the coun- termeasure with the customer.
(7) [When a transmission booster is connected]
Turn on the transmission booster before turning on the outdoor units.
If the outdoor units are turned on first, the connection information for the refrigerant circuit may not be properly recognized.
In case the outdoor units are turned on before the transmission booster is turned on, perform a power reset on the outdoor units after turning on the power booster.
(8) Turn on the main power at least 12 hours before test run.
Insufficient powering time may result in compressor damage.
(9) When a power supply unit is connected to the transmission line for centralized control(*), perform a test run with the power supply unit being energized. Leave the power jumper connector on CN41 as it is (factory setting).
*Includes the cases where power is supplied to the transmission line from a system controller with a power-supply function
6-2 MA and ME Remote Controller Functions and Specifications
There are two types of remote controllers: ME remote controller, which is connected on the indoor-outdoor transmission line, and MA remote controller, which is connected to each indoor unit.
6-2-1 Function/Specification Comparison
6-2-2 Local Remote Controller Selection Tips
MA remote controller and ME remote controller have different functions and characteristics. Choose the one that better suits the requirements of a given system. Use the following criteria as a reference.
Functions/specifications MA remote controller*1*2
*1. MA remote controller refers to MA remote controller (PAR-31MAA, PAR-21MAA), MA simple remote controller, and wire- less remote controller.
*2. Either the MA remote controller or the ME remote controller can be connected when a group operation of units in a sys- tem with multiple outdoor units is conducted or when a system controller is connected.
ME remote controller*2*3
*3. ME remote controller refers to ME remote controller and ME simple remote controller.
Remote controller address settings Not required Required
Indoor/outdoor unit address set-
tings Not required (required only by a system
with one outdoor unit)*4
*4. Depending on the system configuration, some systems with one outdoor unit may require address settings.
Required
Wiring method Non-polarized 2-core cable
To perform a group operation, daisy- chain the indoor units using non-polar- ized 2-core cables.
Non-polarized 2-core cable
Remote controller connection Connectable to any indoor unit in the
group Connectable anywhere on the indoor-out-
door transmission line Interlock with the ventilation unit Each indoor unit can individually be in-
terlocked with a ventilation unit. (Set up via remote controller in the group.)
Each indoor unit can individually be inter- locked with a ventilation unit. (Set up via remote controller.)
Changes to be made upon group-
ing change MA remote controller wiring between in-
door units requires rewiring. Either the indoor unit address and remote controller address must both be changed, or the registration information must be changed via MELANS.
MA remote controller*1*2 ME remote controller*1*2
There is little likelihood of system expansion and group- ing changes.
Grouping (floor plan) has been set at the time of instal- lation.
There is a likelihood of centralized installation of remote controllers, system expansion, and grouping changes.
Grouping (floor plan) has not been set at the time of in- stallation.
To connect the remote controller directly to the OA pro- cessing unit.
*1. ME remote controller and MA remote controller cannot both be connected to the same group of indoor units.
*2. A system controller must be connected to a system to which both MA remote controller and ME remote controller are con- nected.
<System with MA remote controller> <System with ME remote controllers>
MA remote controller Outdoor unit
Indoor unit BC controller
M-NET transmission line (indoor/outdoor transmission line)
group group
ME remote controller Outdoor unit
Indoor unit BC controller
M-NET transmission line (indoor/outdoor transmission line)
group group
6 Test Run
6-3 Making the Group and Interlock Settings from an ME Remote Controller
6-3-1 Overview
6-3-2 Address Registration
Make the following settings to perform a group operation of units that are connected to different outdoor units or to manually set up the indoor/outdoor unit address.
(A) Group settings...Registration of the indoor units to be controlled with the remote controller, and search and deletion of registered information.
(B) Interlock settings...Registration of LOSSNAY units to be interlocked with the indoor units, and search and deletion of registered information
[Normal display]
Register the indoor unit to be controlled with the remote controller.
Bring up either the blinking display of HO by turning on the unit or the normal display by pressing the ON/OFF button.
The display window must look like one of the two figures below to proceed to the next step.
1
[Blinking display of HO ]
? A F
D
H B G
C
E PAR-F27MEA
ON/OFF
CENTRALLY CONTROLLED DAILY AUTO OFF
REMAINDER CLOCK
ON OFF
˚C
CHECK MODEFILTER TEST RUN LIMIT TEMP.
˚C 1Hr.
NOT AVAILABLE STAND BY
DEFROST
FILTER CHECK TEST TEMP.
TIMER SET CLOCK ON OFF
<Deletion error>
(B) Interlock Settings (A) Group Settings
Indoor unit address display window Indoor unit address display window
Interlocked unit address display window Bring up the Group Setting window.2
-Press and hold buttons [FILTER] and [ ] simultaneously for 2 seconds to bring up the display as shown below.
3
A
C
D
B
Select the unit address.
- Select the address of the indoor unit to be registered by pressing button [TEMP. ( ) or ( )] to advance or go back through the addresses.
Register the indoor unit whose address appears on the display.
- Press button [TEST] to register the indoor unit address whose address appears on the display.
- If registration is successfully completed, unit type will appear on the display as shown in the figure below.
- If the selected address does not have a corresponding indoor unit, an error message will appear on the display. Check the address, and try again.
5
<Successful completion of registration>
Unit type (Indoor unit in this case)
blinks to indicate a registration error.
(Indicates that selected address does not have a corresponding unit.)
4
To register the addresses for multiple indoor units, repeat steps and above.3 4
Go to section 6-3-3 "Address Search"
for how to search for an address.
Bring up the Interlock Setting window.
-Press button [ ] to bring up the following display.
Press again to go back to the Group Setting window as shown under step .
6
G 2
Both the indoor unit address and interlocked unit address will be displayed together.
Bring up the address of the indoor unit and the address of the LOSSNAY to be interlocked on the display.
- Select the address of the indoor unit to be registered by pressing button [TEMP. ( ) or ( )] to advance or go back through the addresses.
- Select the address of the LOSSNAY unit to be interlocked by pressing button [TIMER SET ( ) or ( )] to advance or go back through the interlocked unit addresses.
7
8
C
H
Make the settings to interlock LOSSNAY units with indoor units.
- Press button [TEST] while both the indoor unit address and the address of the LOSSNAY units to be interlocked
are displayed to enter the interlock setting.
- Interlock setting can also be made by bringing up the LOSSNAY address in the indoor unit address display window and the indoor unit address in the interlocked unit address display window.
D
(Displayed alternately)
If registration is successfully completed, the two displays as shown on the left will appear alternately.
If the registration fails, will blink on the display.
(Indicates that the selected address does not have a corresponding unit.)
NOTE : Interlock all the indoor units in the group with the LOSSNAY units; otherwise, the LOSSNAY units will not operate.
(C) To return to the normal display
When all the group settings and interlock settings are made, take the following step to go back to the normal display.
Press and hold buttons [FILTER] and [ ] simultaneously for 2 seconds to go back to the window as shown in step .
Repeat steps 7 and 8 above until all the indoor units in the group are interlocked with the LOSSNAY unit.
To go back to the normal display, follow step .
10 A B
1
9
10 Go to section 6-3-3 "Address Search"
for how to search for an address.
Go to section 6-3-3 "Address Search"
for how to search for an address.
6 Test Run
6-3-3 Address Search
<Entry found>
<No entries found>
To search for the address of indoor units that have been entered into the remote controller, follow steps and .
(A) To search group settings
Unit type (Indoor unit in this case)
- When only one unit address is registered, the same address will remain on the display regardless of how many times the button is pressed.
- When the address of multiple units are registered
(i.e. 011, 012, 013 ), they will be displayed one at a time in an ascending order with each pressing of button [ ] .
To go back to the normal display, follow step .
(Displayed alternately)
Bring up the address of another registered unit on the display.
- After completing step , a subsequent pressing of button [ ] will bring up the address of another registered unit.
(The display method is the same as the one in step .) Address of an interlocked
LOSSNAY unit
Address of another interlocked unit
Bring up on the display the address of the LOSSNAY unit that was interlocked with the indoor unit in step . - With each pressing of button [ ], the address of the LOSSNAY and indoor unit that is interlocked with it will be displayed alternately.
LOSSNAY can be searched in the same manner by bringing up the LOSSNAY address in the Interlocked unit address display window.
(B) Interlock setting search
After performing step , proceed as follows:
Bring up the address of the indoor unit to be searched on the display.
- Select the address of the indoor unit to be searched by pressing button [TIMER SET ( ) or ( )] to advance or go back through the interlocked addresses.
(Displayed alternately) Refer to section 6-3-4 "Address Deletion"
for how to delete an address.
Bring up the Group Setting window.
- Each pressing of button [ ] will bring up the address of a registered indoor unit and its unit type on the display.
11
E
1 2
E
10
E
13 13
13 12
14
12 6
E H
Refer to section 6-3-4 "Address Deletion"
for how to delete an address.
6-3-4 Address Deletion
6-3-5 Making Group and Interlock Settings from Another Remote Controller
The addresses of the indoor units that have been entered into the remote controller can be deleted by deleting the group settings.
The interlock settings between units can be deleted by deleting the interlock settings.
Follow the steps in section 6-3-3 Address Search to find the address to be deleted and perform deletion with the address being displayed in the display window. To delete an address, the address must first be bought up on the display.
Delete the registered indoor unit address or the interlock setting between units.
- Press button ? [CLOCK ON OFF] twice while either the indoor unit address or the address of the interlocked unit is displayed on the display to delete the interlock setting.
F 15
(A) To delete group settings (B) To delete interlock settings
<Successful completion of deletion>
will be displayed in the room temperature display window.
- If a transmission error occurs, the selected setting will not be deleted, and the display will appear as shown below.
In this case, repeat the steps above.
(Displayed alternately)
<Deletion error>
will be displayed in the room temperature display window.
If deletion is successfully completed, will appear in the unit type display window.
If the deletion fails, will appear in the unit type display window. In this case, repeat the steps above.
- -
To go back to the normal display, follow step .10
(A) Group settings and (B) Interlock settings of a group can be made from any arbitrary remote controller.
Refer to "(B) Interlock Settings" under section 6-3-1 "Overview" for operation procedures.
Set the address as shown below.
(A) To make group settings
Interlocked unit address display window...Remote controller address
Indoor unit address display window...The address of the indoor unit to be controlled with the remote controller (B) To make interlock settings
Interlocked unit address display window...LOSSNAY address
Indoor unit address display window...The address of the indoor unit to be interlocked with the LOSSNAY
6 Test Run
6-4 Selecting Remote Controller Functions from an ME Remote Controller
In the remote controller function selection mode, the settings for four types of functions can be made or changed as necessary.
4) Narrowed preset temperature range mode
The default temperature ranges are 19 C to 30 C in the cooling/dry mode and 17 C to 28 C in the heating mode and 19 C to 28 C in the auto mode.
By changing these ranges (raising the lower limit for the cooling/dry mode and lowering the upper limit for the heating mode), energy can be saved.
When making the temperature range setting on the simultaneous cooling/heating type units that supports the automatic operation mode to save on energy consumption, enable the Skip-Auto-Mode setting to make the automatic operation mode unselectable. If the automatic operation mode is selected, the energy-saving function may not work properly.
When connected to the air conditioning units that do not support the automatic operation mode, the setting for the Skip-Auto-Mode, restricted preset temperature range mode (AUTO), and operation mode display selection mode are invalid. If an attempt is made to change the preset temperature range,
“LIMIT TEMP.” appears on the display.
NOTE
[Normal display]
4 5
PAR-F27MEA
ON/OFF FILTER CHECK TEST TEMP.
TIMER SET CLOCK→ON→OFF
1
32
: Press and hold the [CHECK] and [ ] buttons simultaneously for two seconds.
: [SET TEMP. ( ) ] button : [SET TEMP. ( ) ] button 3) Room temperature display selection mode (Display or non-display of room temperature)
Although the suction temperature is normally displayed on the remote controller, the setting can be changed so that it will not appear on the remote controller.
2) Operation mode display selection mode (Display or non-display of COOL/HEAT during automatic operation mode)
When the automatic operation mode is selected, the indoor unit will automatically perform a cooling or heating operation based on the room temperature. In this case, or will appear on the remote controller display.
This setting can be changed so that only will appear on the display.
1) Skip-Auto-Mode setting
The automatic operation mode that is supported by some simultaneous cooling/heating type units can be made unselectable via the ME remote controller.
[Function selection mode sequence on the remote controller]
Normal display
1 1
3 3
3
2 2
3 2 2
3 2
3 2
3 2
Skip-Auto-Mode setting
*1 *1
*2
*2
Temperature range setting mode (AUTO)
Room temperature display selection mode *1 : Skip-Auto-Mode is enabled
*2 : Skip-Auto-Mode is disabled Operation mode display selection mode (Display or non-display of the automatic mode)
Restricted preset temperature range mode (Heating) Restricted preset temperature range mode (Cooling)
Remote controller function selection mode