Premium PPA1208J User manual

AIRE ACONDICIONADO PORTATIL
PORTABLE AIR CONDITIONER
PPA1208J

1
CONTENTS
Maintenance for Common Trouble.............................................................3
Trouble Analysis…................................................................................................3
Remote control battery installation ..................................................................4
Trouble Shooting...................................................................................................5
Electronic Control Theory...................................................................................5
Typical TroubleAnalysis......................................................................................7
Trouble Shooting for Cooling Failure........................................................11
Refrigerant Principle............................................................................................11
Trouble Shooting Flow for Cooling Failure..................................................... 12
Circuit Diagram.....................................................................................................13
Explosive View....................................................................................................... 14

2
Section One
Maintenance for Common Trouble
Chapter I Trouble Analysis
When trouble happened, don’t get panicky and take apart the machine without any
analysis, otherwise some unnecessary damages will be caused. Please deal with the
trouble as the following to find a correct solution.
If the trouble cannot be solved by the following solutions, please check special
trouble solutions for help.
Trouble Cause Solution
Machine cannot work
1. Power-off
2. Power plug is loose
3.Water-full indicator turns on or “P2”
flashes on screen
1.Power-on
2.Re-insert power plug
3.Drain out the water
Cooling function cannot work
well
1.Filters are blocked by dusts
2.Air-inlet is blocked
3.The room is too big or blow-by
1.Clean filters
2. Remove the blockage.
3. Adjust room area or strengthen
the seal
Water leakage
1.Machine doesn’t stand upright
2.Water-outlet is blocked
1 Let machine stand upright
2. Unchoke water-outlet.
Abnormal noise of machine
1.Machine is not placed well
2.Filters is blocked
1.Let machine on flat place and
stand upright
2. Clean the filters
Heat air doesn’t go out
immediately under heating
mode.
1.Environment
al temperature is higher
than setting temperature
2.Heat air will blow out three minutes later
after heating mode running
1.Make setting temperature is
higher than environmental
temperature
2.Please wait patiently for three
minutes.
Strange smell blows out
Machine is unused for a longtime, it has
adsorbed the smell from furniture , carpet,
paint. when the machine runs, the smell
will blow out
Run machine for 2-5minutes, the
strange smell will disappear.

3
Chapter II Remote control battery installation
⑴O pen the cover of battery case in remote control.
⑵According to the polarity tips, install batteries into remote control correctly. (positive
pole to “+”, negative pole to “ –“ ).

4
Section Two
Trouble Shooting
Chapter I Electronic Control Theory
First of all, let’s get a simple knowledge of electronic control theory, so that to seize the
key points of problems quickly and deal with problems more efficiently. An electronic
schematic diagram as following (this is a typical schematic diagram, for special machine ,
please note the circuit diagram attached to the machine ):
From above circuit diagram we can see that the whole diagram is divided into two parts:
compressor water-
thrashed
motor
four-way
valve fan-motor
water
level
switch
indoor
temperaturn
sensor coil
pipe
sensor
transformer
Display Panel
(include
receiving
head)

5
strong power part and weak power part, and electric transformer is the cut-off point.
Strong power part before transformer while weak power part after transformer.
For strong power part, the phase line enters through 30A compressor relay RY1, then
passes fuse, fan motor, four-way valve, water motor. Fan motor is made up of tap motor
and centrifugal fan. There are high fan speed and low fan speed, and be controlled by two
5A relay (RY3 and RY4) respectively. RY3 for high speed while RY4 for low speed.
Water motor is shaded-pole motor and is controlled by relay RY2. Four-way valve is
controlled by RY5.
For weak power part, it can be divided into two parts: power supply part and control
part. The part of power supply goes out through transformer output-port, then passes four
bridge rectifiers of commutation diode, capacitive E1 wave filtering , and get volts d.c.
about 12V , to supply relay and drive integrated package ULN2003, the other way go
through current-limiting resistance RR1 and 5V stabilized voltage 7805 to supply SCM ,
peripheral circuit and display power. The core of control part is HT46R47. Its input
parts are keys, receiving head, room temperature sensor , evaporator temperature sensor
and water-level detecting circuit; its output parts are control relay, buzzer and status
display.
Keys, LED or LCD are man-machine conversation windows. By keys we can change
machine work status; LED or LCD displays machine current work status. Remote control
receiver: when controlled by remote control, the remote control receiver gets the control
signals from remote control, then sends them to SCM. Evaporator temperature sensor
sends the surface temperature of evaporator to SCM. Water-level detecting circuit detects
if water tank is full, and sends the signals to SCM. Analyzed by SCM process, control

6
signals is sent out through drive ICULN2003 to control relay’s ON/OFF. Then the
machine can work well under SCM uniform control.
Chapter II Typical Trouble Analysis
Trouble Detecting Flow forAbnormal Display
Display Abnormal
Display Failure Code
E1：Indoor temperature sensor failure:
sensor plug is in a bad contact with
control panel, or damage in sensor
E2：Coil pipe temperature sensor:
sensor plug is in bad contact with
control panel, or damage in sensor.
Water-full indicator turns on and display
P2 (Refer to Section One Chapter I)
Display stroke-lack or indicator off :
1.Control panel is in a bad contact with display panel, then
need to re-insert plug .
2.Damage in display panel, then need to replace display panel.
Trouble Shooting Flow for Machine Turn-On Failure
NO Re-plug N line and L line , make them in
a good contact with film-inserted
After power-on , key "POWER "cannot run machine:
Check if power cord terminator (N, L) is in a good
contact with control panel film-inserted.
Check if there is 5V voltage out from 7805
YES
NO
YES Replace main control panel
Check if the link between display panel and main control
panel is loose.
NO
YES Re-link them
Replace main control panel and display panel .

7
Trouble Shooting Flow for Compressor Turn-On Failure
Replace main control panel
NO
YES
If compressor overload.
YES
NO
After overloading, machine will recover normal
If compressor relevant- link -terminators
are loose
NO
YES Re-fix compressor relevant-link-terminators
OK
NOT OK
Replace compressor capacitance, then
check if it is OK .
Replace the compressor with the same model No.
Setup the temperature to lowest ( cooling
mode) or highest (hesting mode).
If there is strong power out from
compressor realy
YES
NO
If the setting temperature under cooling mode is too high.
If the setting temperature under heating mode is too low.
YES
NO
Compressor turn-on failure.
If there is at least 3 minutes after
compressor restating .
Wait for 3 minutes, then re-check the compressor.

8
Trouble Shooting Flow for Low/High Fan-Speed Running Failure
There is foreign body in fan motor , and fan
motor cannot work with too big resistant.
Remove the foreign body
YES
NO
NO
YES
NO
YES
Re-insert fan terminator plug, then
check if it is OK .
Replace the fan motor with the
same model No.
NOT
OK
OK
Replace main control panel
NO
YES
NO
YES
Replace main control panel
Re-insert fan terminator plug, then
check if it is OK.
Repalce the fan motor with the same model
No., then check if it is OK .
NOT
OK
OK
Replace main control panel
NOT
OK
OK
Replace main control panel
Replace main control panel
Check if there is strong power out
from low fan-speed relay.
Low fan -speed running failure after machine turns on.
Check if there is strong power out from power supply line of
low fan-speed.
High fan-speed running failure after machine turns on.
Check if there is strong power out from power supply
line of high fan-speed.
Check if there is strong power out
from high fan-speed relay.

9
Trouble Shooting Flow for Fan Running Failure
If there is foreign body in wind wheel ( wind wheel
cannot work with big resistance ), YES or NO?
Remove foreign body
YES
NO
After re-insert fan terminal
plug, OK or NOT ?
NOT OK OK
After replace fan motor with the
same model No., OK or NOT ?
NOT OK
OK
Replace main control panel
Fan running failure

10
Section Three
Trouble Shooting for Cooling Failure
Chapter I Refrigerant Principle
Portable air-conditioning refrigerant system was mainly composed of four parts:
compressor, condenser, capillary and evaporator, which are connected by tubes as
following:
Condenser Evaporator
Compressor
When portable air conditioner starts to work, firstly compressor compresses normal-
temperature and low-pressure refrigerant gas to a high-temperature and high-pressure
gas, then send it to condenser. In condenser, the high-temperature and high-pressure
refrigerant gas will be cooled down to a mesothermal (45℃-50℃) and high-pressure
refrigerant liquid by fan, after that the refrigerant passes capillary where it will be
decompressed and throttled, and then goes to evaporator where the refrigerant will
expand rapidly and absorb heat from environment, at last fans blow out cooling air to
cool the room.

11
Chapter II Trouble Shooting Flow for Cooling Failure
Cooling Failure
Display normal or not
Codes refer to chapter II section two
Electrical Control refers to chapter II section two
Show Failure Code
Show abnormal
OK
Environmental temperature >setting temperature,YES or NO?
NO Reset setting temperature < environmental temperature
YES
If restart machine soon after machine power-off, YES or NO ?
YES Wait for 3 minutes (machine has 3 minutes delay-protection)
NO
Judge if compressor work or not by
machine's vibration or machine power
measured by power meter
NO
YES Refer to compressor trouble shooting in chapter II section two
After compressor works, evaporator surface temperature don't go down,the reasons may
be the following :
1. Compressor stops suddently several minutes later after its starting, and with violent
vibration
, three or more minutes later, restart it unsuccessfully. This may be caused by
system blockage which need to unchoke system or replace capillary,or by compressor
welding-blockage.
2. Compressor works with slight vibration, evaporator frosts partly, and work current is
lower than normal value. This may be caused by refrigerant lack, so need to replenish
refrigerant.
3. Compressor works with slight vibration , evaporator temperature keeps the same,and
temperature of exhaust pipe is only 50°--60°. Reason for this may be all
refrigerant is leaked out.
4. Compressor works with loud sound "-ion", a few seconds later, protector turns on , and
compressor temperature is very high . This may be caused by cylinder-blockage,so
need to replace the compressor.

12
chapter III Circuit Diagram

13
Chapter ⅣExplosive View

14