Panasonic Inverter Air Conditioner R410A Technical Data And Service Manual

							1-105
1. Specifications
7-11. Misoperation Alarm Indicators
Alarm indicator lamps on the indoor unit indicate the error 
cause if the air conditioner fails to operate upon being 
switched on. The possible alarm indications are given in 
Table 1-9. Fig. 1-95 shows the location of the alarm lamps 
on the indoor unit.
(See Table 1-9 and Fig. 1-95.)
Table 1-9
Alarm
(OPERATION(TIMER(STANDBYCause of Trouble
lamp) lamp) lamp)
S.C. errors* between the indoor unit’s controller (PCB) and the remote
controller.
Compressor protector is working.
S.C. errors between indoor and outdoor units.
Indoor or outdoor thermistor is malfunctioning.
Outdoor unit protector is working.
Indoor unit protector is working.
TEST RUN switch on the operation controller is in ON state.
* S.C.: Serial communications
OPERATION
lampTIMER
lampSTANDBY
lampRemote control
receiver
Fig. 1-95
NOTE
Stick the alarm message label accompanying the
wireless remote controller on the electrical component
box to indicate the cause of trouble for future reference.
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							1-106
1. Specifications

CAUTION If the signal receiving unit is installed near a rapid-start or inverter type fluorescent 
lamp (neither one uses glow lamps), it may be impossible to receive signals from the 
wireless remote controller. To avoid signal interference from fluorescent lamps, install 
the receiving unit at least 6.6 ft. away from the lamps and install at a location where 
wireless remote controller signals can be received when the fluorescent lamps are on.
7-12. Separate Type Signal Receiving Unit Installation
CAUTION Do not twist the operating
controller wires together
with the power supply
wires. Doing so can result
in malfunction.
 If electrical noise is induced
in the unit power supply,
take appropriate measures,
for example installing a
noise  lter.
  If local electrical codes allow, this signal receving
unit can be mounted using a conventional wall box
for  ush mounting.
(1) If Wall mounted Fixed Position
Install the remote controller at a convenient
location on a nearby wall. However, before
attaching the remote controller mounting cradle,
check that the remote controller can operate from
the desired wall position. (Fig. 1-97)
How to Install Batteries
See Fig. 1-98.
(1) Press and slide the lid on the back of the remote
controller in the direction of the arrow.
(2) Install two AAA alkaline batteries. Make sure the
batteries point in the direction marked in the
battery compartment.
(3) Press the reset hole, then replace the lid. If you
press it, the current time, ON time, and OFF time
are all reset to 0:00.
Fig. 1-97
12
Fasten the remote control 
mount with screws.Fitting the remote 
control in the mount.
Remote control mount
Press
Put in
Fig. 1-98
Reset hole
Cover
Fig. 1-96
Cover plate Notch
Spacer
Switch box (no cover) Signal receiving unit
M4× L1
Screws (2)
123
4R D
A6 5

L
L
AB
U S :
U C R
N I
A
M :
U C
R
L A
M R O
N. K
H C
B C PN
U
R T S E T
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							1-107
1. Specifications
When using the signal receiving unit on a wall with
the front exposed, choose a wall surface that the
signal receiving unit can be mounted on.
(1) Insert a  athead screwdriver into the slot on the lower 
side of the signal receiving unit and pry off the back 
case.
(2) The wire routing at the signal receiving unit comes out 
of the upper case (thin portion at upper center) so use 
nippers or a similar tool to cut out a notch beforehand 
large enough for the remote control cable (option) to 
pass through as shown in Fig. 1-99.
(3) Remove the wire, which is connected prior to shipping,
from the connector.
(4) Connect the remote control cable (option) to the signal 
receiving unit connector as shown in Fig. 1-100 after the 
clamp (supplied) with the unit is installed.
(5) After arranging the wiring on the printed circuit board 
as shown in Fig. 1-101 so that it is contained within the 
signal receiving unit, attach the back case. At this time, 
arrange so that the head of the clamp faces the side.
(6) Remove the cover plate and install the signal receiving 
unit using the 2 wood screws.
(7) Fasten to the wall using the cord clip (supplied).
(8) Reinstall the cover plate.
  To use the signal receiving unit while mounted on the 
ceiling, install by using the carrier for ceiling installation 
supplied with the unit.
(1) Remove the cover plate by inserting a  athead 
screwdriver into the notch in the lower section and 
prying it off.
(2) Cut out a section (3-3/4×2-1/32) on the ceiling using 
the paper pattern (supplied) as a guide.
(3) Run the wire through the mounting carrier and insert 
into the installation hole as shown in Fig. 1-103.
(4) Fit securely into the ceiling material at sections (A) 
and (B) as shown in Fig. 1-104.
(5) Connect the wire (2-wire core) from the signal 
receiving unit with the wire from the indoor unit. (See 
section on how to wire the receiving unit.) as shown in 
Fig. 1-104.
(6) Use the supplied spacers to adjust for a thickness 
several inches more than the ceiling material and 
lightly fasten the receiving unit in place with the small 
screws (M4×1-9/16, 2 pcs.) supplied with the unit.
(7) Tighten the machine screws after  tting sections (A) 
and (B) into the openings, in the gap between the 
signal receiving unit and ceiling surface as in Fig. 1-105. 
Do not apply strong force when tightening the screws. 
Excessive force might warp or damage the cover. 
When  nished, the signal receiving unit should still be 
able to move slightly when pressed as shown in Fig. 
1-105.
(8) Reinstall the cover plate.
Run the remote con
cable through a notch
in the upper case.Clamp (Supplied)
About 3/32-1/8
ConnectorRemote control cord 
(Option)
Remote control cord (Option)
ClampSignal receiving unit
Wood screws (2)
123
4R
D A6 5
 L L
AB U
S :
U C
R
N
I A M
:
U C R
L
A M
R O N. K H
C B
C PN U R
T S
E T
B A
Fig. 1-99
Fig. 1-100
Fig. 1-101
Fig. 1-102
Fig. 1-103
Fig. 1-104
Fig. 1-105
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							1-108
1. Specifications
7-13. Electrical Wiring
CAUTIONBe sure to do the wiring
correctly (incorrect
wiring will damage the
equipment).
  Recommended wire diameter and allowable length
for signal receiving unit wiring and its branch wiring:
AWG #18, MAX 1,300 ft.
7-14. Test  Run  Switch
(1) Remove the cover plate of the signal receiving unit.
Set the “TEST RUN” switch of the dip switches to
the ON position.
(2) Press the ON/OFF operation button on the
wireless remote controller.
Wire joint (2 pcs.
white, supplied)
1 WHT
BLK
21
2Terminal board 
for indoor unit
remote control
wiring
Signal receiving unit wiring (field supply)ConnectionWire from signal receiving unitSignal receiving
unit
Wire joint CE-1 
(supplied)
Signal receiving
unit wiring Signal receiving
unit wiring
CAUTIONTo avoid placing an
excessive load on the
equipment, use this
function only when
conducting the test run.
(3) Make a test run using the air conditioner in
COOL or HEAT mode.
(4) During the test run, the “OPER.,” “TIMER,”
and “STDBY” LED all blink.
  To protect the air conditioner from overloading, the outdoor unit will not start running for approximately 3 minutes
after power is applied or the air conditioner is turned off and then back on.
  When the DIP switch is set to “TEST – ON,” temperature control from the wireless remote controller is disabled.
Do not use this setting at any time other than for the test run. Doing so will place an excessive load on the system.
(5) After the test run, press the ON/OFF operation button on the wireless remote controller. Then, set the
TEST RUN switch back to the OFF position to cancel the test run mode.
(This receiver includes a 60-minute automatic OFF timer function in order to prevent continuous test run.)Fig. 1-106
123
4ADR56
ALLRCU : SUB
RCU : MAIN
NORMALPCB CHK.TEST RUN
ALL
RCU : SUB
PCB CHK.
TEST RUN
(1) Strip the insulation to approximately 9/16 from the ends
      of the wires that will be connected.
(2) Twist together the 2 wires and create a crimp connection
      at the wire joint.
(3) If a special crimping tool is not used, or if the connection
      is soldered, insulate the wires using insulation tape.
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							1-109
1. Specifications
7-15. Misoperation Alarm Indicators
A blinking lamp for other than the signal receiving unit
 lter shows that a problem has occurred in the unit, so
make an inspection. (Refer to servicing information in
the service manual, etc.) Also, if wired remote controller
and dedicated service check lines (CV6380230938: 
service use) are available, then detailed error
information can be obtained by connecting to the
service connector as shown in the drawing. For
information on how to connect to the signal receiving
unit, refer to the instruction manual that came with the
dedicated service check lines.
Table 1-10
Fig. 1-107
Fig. 1-108
Lamp
OPERATIONTIMER STANDBYu g i r BaC tel b u o r T   f o   e s h
lamp lamp lamp
No power supply or mis-wiring of signal receiving unit.
S.C.* errors between the indoor unit’s controller (PCB) and
signal receiving unit.
S.C. errors between indoor and outdoor units.
Alternately Indoor unit protector is activated.
Alternately Outdoor unit protector is activated.
Compressor protector is activated.
Concurrent Mis-setting of indoor unit.
Concurrent Mis-setting of outdoor unit.
* S.C.: Serial communications
ALLRCU : SUB
RCU : MAIN
NORMALPCB CHK.TEST RUN
Service
connector
1. Operation Display
2. Start/Stop button
3. Fan speed button
4. Swing/Wind Direction button
5. Timer setting button
6. Reset button
7. Cover8. Transmitter
9. Remote control sensor
10. Temperature setting buttons
12. Mode Select button 11. Filter button
13. Ventilation button
14. Address button
15. Sensor button
16. Clock button
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							1-110
1. Specifications
7-16. Basic Wiring Diagram
CAUTIONBe sure to do the wiring
correctly (incorrect wiring
will damage the equipment).
 Wiring procedure
Carry out the wiring according to the above wiring
diagram.
  Address setting is automatically executed
after turning on the system.
An indoor unit address is assigned to each
indoor unit.
Operation takes place successively at
intervals of 1 second, by using combinations
of the address setting of each unit.  In case of using shielded wires for inter-unit control 
wiring, ground the shield on one side. (Fig. 1-109)
Otherwise misoperation because of electrical noise
may occur.
Shielded wire
Ground
Fig. 1-109
U1
U2
U1
U2
1
2
: Ground (earth)
Outdoor unit
Indoor unit
No. 1
1
2 Remote
Controller
Inter-unit
control
wiringWire joint
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							1-111
1. Specifications
7-17. Wiring System Diagram for Group Control
This diagram shows when several units (maximum of
8) are controlled by a signal receiving unit (main
unit). In this case, a signal receiving unit can be
connected at any indoor unit.
 Group control using 2 signal receiving units
It does not matter which of the 2 signal receiving units
you set as the main controller.Wiring procedure
Wire according to the diagram at left:
  Address setting is executed automatically when the 
outdoor unit is turned on.
  Each successive unit will respond at one-second
intervals following the order of the group address
when the remote controller is operated.
When using multiple signal receiving units (up to 2
can be used), one is the main signal receiving
unit and the other is the sub-signal receiving unit.
  To set up a sub-signal receiving unit, change its
remote control address connector (RCU. ADR)
located on its PCB from main to sub position
(main: when shipped from factory).
(sub)
12
Wire jointRemote
Controller
(main)
: Ground (earth)
Connection wiring
for group control 12
U1
U2
U1
U2U1
U2
U1
U2U1
U2
U1
U2U1
U2
U1
U2
1
2
Outdoor unit
Indoor unit
No. 1
1
2
Outdoor unit
Indoor unit
No. 2
1
2
Outdoor unit
Indoor unit
No. 3
1
2
Outdoor unit
Indoor unit
No. 8
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							1-112
1. Specifications
7-18. Wiring System Diagram for Multiple Remote Controllers
  To operate 1 indoor unit with 2 signal receiving units
set at different locations.
CAUTIONCarry out the wiring correctly
(incorrect wiring will damage
the equipment).
 When installing multiple remote controllers
This multiple system is used for operating the unit(s) at
different positions. (A maximum of 2 signal receiving
units can be installed.)
 Setting method
To execute this control, make the setting according
to the following procedure.
(1) Of the two installed signal receiving units, make
one the main signal receiving unit (factory-shipped
state).
(2) On the other signal receiving unit, change the
address connector on the PCB from main to sub
position.
In this state, it functions as a sub-signal receiving
unit.
 Basic wiring diagram
Connection wiring Signal receiving unit
1
2
Indoor unit
Earth(sub) (main)
1
2
(Option)
1
2
Remote control
cable terminal
board
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							1-113
1. Specifications

7-19. Test  Run  Procedure
   Wall mounted Type
    (K1 Type)
7-20. Check Items Before the Test Run
(1) Turn ON the remote power switch at least 12 hours before the test run in order to charge the crankcase heater.
(2) Fully open the service valves on the gas-tube and liquid-tube sides.
(3) Set the sliding switches on the inside of the wireless remote controller cover to the correct settings for that model.
After changing the settings, press the RESET hole.
Check the “Check Items Before the Test Run.”
Set the indoor unit controller to “TEST.”
Return the indoor unit controller to 
“NORM.” (Item 7-21-3)NO
Is operation
possible? Verify the combination (wiring) of indoor and 
outdoor units. 
Check using the Diagnosis 
function table. (Refer to 7-24)
YESNote:   Check the indoor-side drainage.(Item 7-20)
(Item 7-21-3)
Wireless remote controller transmitter
Verify that sliding switch 1 is in the “S” position.
SKN
Set sliding switch 2 to the correct setting for these models.
A: Heat pump model
(H: Heat pump, no auto heating/cooling)
C: Cooling-only modelAHC AHCRESET hole
Sliding switchSENSOR button
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							1-114
1. Specifications
7-21. Preparing for the Test Run
7-21-1. Changing the room temperature sensor
  Room temperature sensors are installed inside the indoor unit and the wireless remote controller.
Either room temperature sensor can be used.
  When “Unit Sensor” is indicated on the wireless remote controller’s LCD, the indoor unit sensor is operating as the 
room temperature sensor.
To change to the remote control sensor, open the remote control cover and press the SENSOR button once. The 
“Unit Sensor” display disappears, and the remote control sensor becomes the room temperature sensor.
CAUTION
If the temperature data from the remote controller is not communicated to the indoor
unit for a period of 10 minutes when the remote control sensor is selected, the unit
automatically switches back to the indoor unit sensor.
Install the remote controller in a location where the signal can reliably be received by
the indoor unit.
7-21-2. Using the remote controller
  Face the remote controller toward the receiver (indoor unit).
  The maximum distance where the remote controller signal can be received is approximately 26 ft., however this
distance is only a guide. The actual distance may vary somewhat depending on battery capacity and other
conditions.
  Make sure there are no obstructions which can block the signal between the remote controller and the receiver.
  When the remote controller signal is received correctly, the indoor unit beeps.
(It beeps twice only when operation is started.)
  Do not drop, throw, or wash the remote controller.
  Do not place the remote controller in a location exposed to direct sunlight, or near a stove or similar appliance.
7-21-3. Test  run
 Using the controller
(1) Slide the main unit controller switch from “ON” to “TEST”.
(The outdoor unit will not operate for approximately 3 minutes after
the power is turned ON, or after operation is stopped.)
(2) All indicator lamps on the display blink while test run is in progress.
(3) Temperature control is not possible during the test run.
(4) If normal operation is not possible, the lamps on the display will indicate
the problem. Refer to “7-24. Diagnosis Table”.
(5) After the test run is completed, move the controller switch from “TEST” to “ON”  and verify that the indicator lamps 
stop blinking.
(A 60-minute automatic OFF timer function is included in order to prevent continuous test run.)
Receiver
Wireless Remote Controller
CAUTION
Controller
Indicator
For S-26PK1U6 
OFF ON
TEST
 Do not use this setting at any time other than for the test run. Doing so will place an excessive load on
the system.
   Test run is not possible if the power was turned ON when the controller switch was in the “TEST” position.
Leave the power ON and move the switch to “OFF,” then move the switch back to “TEST.”
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