Carrier 53SSA009 1 Series User manual

Portable split air conditioners
53SSA009---1
53SSB009---1
Service manual

2
1
ASSEMBLY DRAWINGS
Contents page
AASSEMBLY DRAWINGS 2
BPARTS DESCRIPTION 3
2.1 Control panel 4
2.2 Accessories supplied 4
2.3 Dimensions and weight 4
CTECHNICAL DATA 5
DPERFORMANCE DIAGRAMS 5/6
EWIRING DIAGRAMS 7
FREFRIGERANT CIRCUIT
PRINCIPLE OF OPERATION 8
GUNIT DISASSEMBLY 8/12
HCONDENSATE DRAIN PUMP 13
ICOMPONENT TESTING PROCEDURE 14/15
JOPTIONALACCESSORIES 15

3
PARTS DESCRIPTION
2
Supply cable with plug
Air inlet
Control
panel Air outlet
Air outlet
Condensate collection tank
Air filters
Condensate drain tube

4
2.1 Control panel
1. OFFposition
2. TURBOcooling
3. Modeselector
4. SILENTcooling
5. Dehumidification
6. Thermostat
7. Low fan speed
8. Highfanspeed
9. Alarmindicatorlight
10. Fanspeedindicatorlights
11. Coolingindicatorlight
12. Dehumidificationindicatorlight
1. Mounting brackets for the outdoor unit
2. Screws, nuts and washers for fixing
the mounting brackets
3. Fastening strap with suction cup
4. Strap with spring-clips
2.2 Accessories supplied 2.3 Dimensions and weight
Inches (mm), lbs (kg)
1
2
3
4
6
5
8
7
91011129
TURBO
SILENT
1
2
3
4

5
Thecoolingcapacitydiagramisbasedon80°Fdrybulbindoortemperatureforthreedifferentvaluesofindoorrelativehumidity.
53SSA009---1
Model 53SSB009---1
Cooling capacity (Btu/h) 8500
Power input W
– cooling 880
– dehumidification 870
Locked rotor amps A 46
Operating current A
– cooling 7.7
– dehumidification 7.75
Dehumidification rate pints/day
– cooling 11.4
– dehumidification 17.5
Air flow cfm - (rpm)
(fan speed)
– high speed cooling 285 - (1000)
– low speed cooling 220 - (810)
– high speed dehumidification 285 - (1000)
Recommended fuse size A 15
Supply voltage 115 V - 1ph - 60 Hz
TECHNICALDATA
PERFORMANCE DIAGRAMS
4
3
Power Input, kW
1.1
1.0
0.9
0.8
0.770 75 80 85 90 95 100 105 110 115
Outdoor dry bulb temperature °F
Power Input, kW
30% RH
50% RH
85% RH

6
PERFORMANCEDIAGRAMS
4
Theairdischargetemperaturediagramisbasedon80°Fdrybulbindoortemperatureforthreedifferentvaluesofindoorrelativehumidity.
Due to the temperature differences of the air at the outlet, the thermometer must be placed exactly in the position shown in the sketch.
The power input diagram is based on 80°F dry bulb indoor temperature for three different values of indoor relative humidity.
Discharge air temperature
measuring point
Theairdischargetemperaturediagramisbasedon80°Fdrybulbindoortemperatureforthreedifferentvaluesofindoorrelativehumidity.
Due to the temperature differences of the air at the outlet, the thermometer must be placed exactly in the position shown in the sketch.
13,000
70 75 80 85 90 95 100 105 110 115
Outdoor dry bulb temperature °F
Cooling capacity, Btu/h
30% RH
50% RH
85% RH
Cooling capacity
Btu/h
9,000
12,000
11,000
10,000
8,000
7,000
6,000
70 75 80 85 90 95 100 105 110 115
Outdoor dry bulb temperature °F
Discharge air temperature °F
30% RH
50% RH
85% RH
Discharge air temperature °F
70
75
80
65
60
55
50
45
40

7
POSITION
WIRINGDIAGRAMS 5
“RS” CONTACT POSITIONS
CONTACT
Legend
CC Compressor capacitor
CDP Condensate drain pump
CM Compressor
CPS Power supply cable
CWT Compressor overload protector
C1 Indoor fan connector
C2 Pump connector
C3 Outdoor fan connector
C4 Top panel connector
C5 Compressor connector
IFC Indoor fan capacitor
IFM Indoor fan motor
OFC Outdoor fan capacitor
OFM Outdoor fan motor
PS Pump switch
RS Rotary switch
TA Room thermostat
TAF Antifreeze thermostat
WS Full tank switch
X1 Terminal block
Wire colours
OOrange
ABrown
BBlue
RRed
CBlack
WWhite
GGrey
Y-G Yellow-Green
Note
The connection sequence
does not represent the
physical layout.

8
REFRIGERANTCIRCUIT PRINCIPLEOF OPERATION
1. Compressor
2. Condenser
3. Outdoor fan
4. Filter
5. Capillary tube
6
8
910
11
a
bc
gf
de
l
l
UNIT DISASSEMBLY 7
Remove the plug from socket.
Front panel removal
Unscrew the six screws
placed on unit back and
remove the front panel.
8
910
11
a
bc
gf
de
l
m
n
6. Evaporator
7. Indoor fan
8. Gas discharge
9. Liquid
10.Liquid/gas
11.Gas suction
12.Service tube
13.Service valve
14.Quick couplings
Mod. 53SSA009---1 Mod. 53SSB009---1

9
Rear panel removal
Remove the condensate tank in the rear of the unit.
On mod. 53SSA009---1, unscrew the fixing screw with a screwdriver and remove the closing cover.
Unscrew the four side clamping screws, lift the back panel about 10 mm and finally remove it.
At this point it is possible to make any check and/or service operation on the unit.
Control panel template removal
Remove the control panel template levering
on the two hooks placed in its lower part.
In this way all the electrical and electronic parts of
control panel can be reached and it is also possible
do all checks and parts substitutions of the same panel.
Electromechanical control removal
Remove the plug-in switch knob, release the plastic tab
and remove the switch end the board.
UNIT DISASSEMBLY 7

10
UNIT DISASSEMBLY 7
Model 53SSB009---1, is provided with quick coupling
connesctions for fixed installation that allow the units to
be disconnected up to a maximum of six times without
impairing the performance of the air conditioner.
This operation must always be carried out by
qualified and authorized personnel.
On model 53SSB009---1, unscrew the fixing screw
using the "TORX" screwdriver (size 10 with holed bit)
and remove the closing cover.
Disconnect the electrical connector.
Loosen the fixing clamp of the small tube that takes
condensing water to the outdoor unit, taking care to
dischargetheremainingcondensatewaterintoapanorthe
indoor unit collection tank.
With a screwdriver, unscrew partially the 4 screws of the fixing bracket flexible pipe.
Using two fixed wrenches (0.94" (24 mm) on turning nut and 0.75" or 0.83" (19 or 21 mm) on fixed
parts) operate on the turning nut, unscrew and remove the quick coupling connections.
Remove the 4 screws of the fixing bracket flesible pipe.
Protect the connection end parts with caps. Position the outdoor unit outside in the desired
position passing the flexible pipe through the hole Ø 2.4" (60 mm) in the wall.
The two parts of the air conditioner should remain split for the shortest possible time.
For unit re-assembling repeat the previous operations in reverse order.
For re-connection of the quick coupling, apply a tightening torque of 17 to 20 Ft-Lbs.
Quick-connect couplings removal.
Switch the unit off, turning the mode selector counter-
clockwise to symbol • and remove the plug from the
power supply socket.

11
Remove the pipe conduit plate releasing the six plastic
tabs which secure it to the unit.
Extract the refrigerant from the unit using a suitable
device and avoiding to exhaust it in the atmosphere.
Unsolder and disconnect coil piping and then remove it.
Fan motor replacement
DisconnectthepolarizedelectronicconnectorandTHsensor.
Using a screwdriver release the four plastic tabs that keep
the half scroll of the fan in place.
In this way it is possible to extract the motor from the
rubber vibration isolators which are supporting it.
If one or more plastic tabs of the half scroll of the fan are
broken, the half scroll can be secured by similar screws to
the ones used in the unit, during the re-assembly.
Coil removal
Remove the air flow flap and its holder.
UNIT DISASSEMBLY 7

12
Unscrewthefour motorfixingnuts.
Outdoorunitremoval.
Unscrew and remove the clamping screws (two on front and five on the upper part).
Unhook and remove the plastic casing. Unscrew the fan clamping screw.
UNIT DISASSEMBLY 7

13
CONDENSATE DRAIN PUMP 8
Condensate drain pump operation
Cooling mode
Condensate water is collected in a tray. When the water level rises (L1) a microswitch (A) connected to the float will light the
pump and condensate water will be evacuate to the outdoor unit (condenser).
Pump is automatically switched off by the microswitch float when water level decrease into the tray.
Dehumidification mode
During operation in dehumidification, the drain pump is disconnected. When condensate water level raises into the tray and the
overflow point (L2) is reached, it is collected in another part of the tray and will be drained in the unit water tank.
The compressor is stopped by the full water tank microswitch.
In certain applications a floor drain may be provided and it may be easier to use the drain tube to remove the condensate water (B).
Electrical circuit
In series to the pump is placed a rectifier diode and a
thermic overload protection (PTC) that have the following
functions:
1) The diode permits an increase in the solenoid pump flow.
2) The PTC interrupts the operation of condensate drain
pump when a malfunction of it may occur, avoiding short
circuit and plastic overheat. In this case condensate
water is drained directly to the water tank after overflow
level is reached.
Water overflow level in
dehumidification mode Water level to drive the microswitch
float for drain pump operation
Cap to allow the floor drain using an extension tube.
Cap is also used at the end of assembling line
to drain water after unit test.
Connect the black wire
Connect the
brown wire
Position PTC
in its seat on the
pump support
Connect the blue wire
Pump Diode Brown wire Connector
Microswitch
Blue wire
PTC
Connect the blue wire
Connect the yellow/green
wire (from electrical box)
uL1
L2
u
u
u
B
A
Black wire

14
Capacitors
Remove the plug from the socket and remove the cables
from the capacitor. Discharge the capacitor, shortcircuiting
its terminal with the blade of a screwdriver.
Take an Ohmmeter and select the x 100 scale. Then
connect the sensors of the Ohmmeter to two terminals of
the capacitor.
a) If the capacitor is in order the needle will go immediately
to zero and then will indicate high resistance.
b) If the capacitor is shorted the needle will go to zero and
stop in that position.
c) To check if a capacitor with metallic body is shorted it is
necessary to put a sensor of the Ohmmeter in contact with a
terminal of the capacitor and the capacitor body. If capacitor is
shorted the instrument will indicate the electric continuity.
d) To check the capacitor polarity it is necessary to put the
Ohmmeter terminals on the capacitor terminals, verifying
that the needle goes to zero and then indicates
the maximum resistance.
Then reverse the position of the Ohmmeter sensor on
the capacitor terminals: the needle will go to zero and
then come back to the normal position.
In this way the capacitor will be discharged and then
recharged by the Ohmmeter battery.
Compressor thermal overload protection
The test of the compressor thermal overload protection
(Klixon) must be carried on before the continuity test;
remove the plug and the connection cables from the
thermal overload protection. Be sure that the protection is
cool and closed. If necessary the Klixon must be removed
from the compressor body and cooled before the test.
Fan motor
Before the test it is necessary to rotate the fans by hand to
ensure that their bearings are not seized and their wheels
do not touch the housing.
Remove the plug and check the run capacitor to be sure
that it is properly working; then:
Fig. 2Fig. 1
Capacitor To capacitor
body
To each
terminal
Capacitor
body
Capacitor Compressor
A) Leaks
Torch leak detector use
To carry out a leak test of a refrigerant circuit it is necessary to
move the sensor pipe terminal of the leak detector along all
the joints and the parts containing refrigerant.
Maximum sensitivity of the detector can be obtained by
keeping the flame high enough to get a red copper plate.
The flame is blue if there is no refrigerant in the air.
When the sensor pipe draws in air containing refrigerant the
colour of the flame changes according to the concentration
of the refrigerant in the air.
1. A small leak will cause the flame colour to switch from
blue to green.
2. A large leak will cause the flame colour to switch from
blue to violet.
Attention! Do not inhale the fumes of the leak detector when the
sensor pipe is drawing in air heavily polluted with refrigerant.
B) Electric parts
In case of a fault of any electric component, to identify the
problem and to solve it apply the procedures described on
the next pages. To carry out these tests it is necessary to
remove unit front panel.
Supply cable
Check the voltage at the terminals while the plug is
connected to the socket.
Electric conductors
Remove the plug from the socket and check the continuity
of all the conductors and jumpers.
Available power supply
Low voltage is the most common problem.
Voltage must be read by an accurate and reliable voltmeter
whenthe unit isworking inCooling Mode. Themeter sensors
must be inserted in the sensor in parallel with the unit.
Components tests
In case of a suspected electric fault first test the circuit to
identify the faulty part.
The tests must be carried on using a TESTER suitable for
troubleshooting.
Change-over switch
1. Remove the plug from the socket.
2. Insert the tester in the different positions of the change-
over switch shown in the wiring diagram to check the
continuity between the contact and the corresponding
position of the change-over switch.
This test must be carried out only when all cables are
disconnected from the change-over switch.
Room thermostat
1. Remove the plug from the socket.
2. Insert the tester according to the wiring diagram indication
and put the thermostat knob to the maximum cooling
position to check the continuity between thermostat contacts.
This test must be carried on only when all cables are
disconnected from the thermostat.
COMPONENT TESTING PROCEDURE
9

15
Table 2 53SSA009---1
Winding resistance at 74.3°F 53SSB009---1
Compressor C - R 0,87 Ω
C - S 5,25 Ω
Indoor fan White - Blue 90 Ω
Brown - Blue 88 Ω
Outdoor fan Black - Blue 59 Ω
Brown - Blue 57 Ω
9
1) Connect the motor with the run capacitor directly in the
circuit. If the motor does not work it has to be replaced.
2) In case the motor works but the current drawn is too
high it is necessary to see if the motor is shorted
checking all connecting cables.
Compressor
Before carrying out the test all cables must be
disconnected from the compressor, and its motor must be
checked to be sure that its windings are not shorted and/or
interrupted. Then:
1) Put a lead of the test circuit in contact with the
compressor body in an unpainted area in order to check
the insulation.
2) Put one of the leads on terminal “C” and the other one
on terminal “S” of the compressor in order to check the
continuity of the start winding.
3) Secure one of the leads on the compressor terminal “C”
and the other one on terminal “R” of the compressor in
order to check the continuity of the run windings.
Check that winding resistances correspond to the figures
given in the table 2 and that there is no ground leakage.
COMPONENT TESTING PROCEDURE
Filter kit
Activated carbon filter Electrostatic filter Filter frames
OPTIONAL ACCESSORIES
10

Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. [phone]
The manufacturer reserves the right to change any product specifications without notice.
Order No. 15367-74, January 1998. Supersedes order No. (new). Printed in Italy