Panasonic Inverter Air Conditioner R410A Technical Data And Service Manual

1-95
1. Specifications
  Fig. 1-73 shows an example of installation.
6-24. Installing the Drain Piping
(1)  Prepare standard hard PVC pipe for the drain and 
use the supplied hose band to prevent water leaks.
The PVC pipe must be purchased separately. 
When doing this, leave a gap between the drain 
socket of the unit and the PVC pipe to allow the 
drainage to be checked. The transparent drain 
pipe allows you to check drainage. (Fig. 1-74)
(2)  After connecting the drain piping securely, wrap 
the...

1-96
1. Specifications
CAUTION
Do not install an air bleeder tube as this may cause 
water to spray from the drain pipe outlet. (Fig. 1-76)
If it is necessary to increase the height of the drain 
pipe, the section directly after the connection port 
can be raised a maximum of 19-11/16. 
Do not raise it any higher than 19-11/16, as this 
could result in water leaks. (Fig. 1-77)
Do not install the pipe with an upward gradient from 
the connection port. This will cause the drain water 
to flow backward and...

1-97
1. Specifications
6-26. Increasing the Fan Speed
If external static pressure is too great (due to long 
extension of ducts, for example), the air flow volume 
may drop too low at each air outlet. This problem may 
be solved by increasing the fan speed using the 
following procedure:
(1)  Remove 4 screws on the electrical component box 
and remove the cover plate.
(2)  Disconnect the fan motor sockets in the box.
(3)  Take out the booster cable (sockets at both ends) 
clamped in the box.
(4)...

1-98
1. Specifications
6-27. When Installing the Indoor Unit
Confirm that the indoor unit should be installed in a horizontal position.
Use the level gauge or vinyl tube and check every four corner of the
unit is in horizontal.
If the air outlet duct flange is positioned with downward gradient,
there is in danger of water splash or drainage.
Also, dust may sometimes be contaminated inside the drain pan caused
by the residual drain water.
Install the air outlet duct flange side in horizontal or upward and...

1-99
1. Specifications
SUPPLEMENT ON DRAIN PIPING
Checkpoint after installation
After installation of indoor and outdoor units, panels and electrical wiring, check the following items.
  k r a m e R     k c e h C   m o t p m y S   t n i o p k c e h C
1Make sure whether indoor and outdoor units are 
correctly installed.Fall, vibration, noise
2  Make sure whether gas leakage is tested.   No cooling, no heating  
3Make sure whether insulation is completed. 
(Refrigerant piping and drain piping)Water...

1-100
1. Specifications
7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER
IMPORTANT
When using this air conditioner with the wireless remote controller it may sometimes be impossible to change 
the operation modes while other indoor unit is running.
   When this happens, a double beep tone sounds, the 
 (operation lamp) lights up, and the  (Timer lamp) and
 (Standby lamp) blink alternately.
Operation is the same even during (AUTO mode) automatic cooling or heating.
 A beep tone sounds 5 times and no...

1-101
1. Specifications
7-2. Room Temperature Sensor Setting
The room temperature sensors are built into the indoor unit and the wireless remote controller. Either of these room 
temperature sensors can operate.
The system is shipped from the factory set to the indoor unit sensor. To switch to the remote control sensor, press the 
sensor switching button located inside the remote control cover and check that A/C SENSOR on the LCD display panel 
goes out.
NOTE
If the sensor switch is set to the remote...

1-102
1. Specifications

4-Way Cassette Type (U1 Type)
7-5. Indicator Section Installation
 Remove the ceiling panel and indicator cover and 
install the indicator section.
(1) Remove the ceiling panel.
(2) Remove the corner cover behind the mark section.
(3 screws)
(3) Remove the mark section inside the ceiling panel.
(2 screws)
(4) Install the indicator section in the location where the
mark section was attached. (2 screws)
(5) Form the wire to match the panel ribs as shown in
Fig. 1-89.
(6) Install...

1-103
1. Specifications
Ceiling Type  (T1 Type)
7-7. Indicator Section Installation
Remove the side panel to install the indicator section.
(Fig. 1-91)
(1) Remove the side panel.
Open the air intake grille, remove the screw at
one place and then remove the side panel by
sliding it toward the front (arrow direction).
(2) Remove cover A and cover B.
Insert a  athead screwdriver into the grooves
of cover A to remove cover A and cover B.
(When removing the cover, take care not to
scratch the panel.)
(3)...

1-104
1. Specifications
7-9. Electrical Wiring
7-10-1. How to use the test run setting (U1, T1 Types)
(1) Set DIP switch [DS] No. 1 on the wireless receiver
unit PCB from OFF to the ON position.
(2) Press the ON/OFF operation button on the
wireless remote controller.
(3) Make a test run using the air conditioner in
COOL or HEAT mode.
(4) During the test run, each of the 3 indicator lamps
on the indoor unit  ash.
(5) During the test run, the air conditioner runs
continuously and the thermostat does not...