Sanyo C2432 User manual

Sanyo C2432 User manual
SERVICE MANUAL SANYO
FILE NO.
TS2432 | C2432, CL2432
SPLIT SYSTEM AIR CONDITIONER
INDOOR MODEL No. PRODUCT CODE No. OUTDOOR MODEL No. PRODUCT CODE No.
TS2432 854 013 38 C2432 854 013 43
CL2432 854 013 39
Indoor Unit Outdoor Unit
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152432 || С2432
CL2432
85464849160000 REFERENCE NO. SM830060
(2) Air Conditioner does not Operate
@ Circuit breaker trips (or fuse blows).
(a) When the circuit breaker is set to ON, it is tripped soon.
There is a possibility of ground fault.
« Check insulation resistance.
If resistance value is 1 MQ or less, it is a defect of insulation.
« Check insulation
resistance of
electrical parts
in the outdoor unit.
* Check insulation
resistance of
electrical parts
in the indoor unit.
(Example)
D Outdoor ® © Indoor
unit © unit
=] circuit ALP!
—|breakerF——— *X|<— IX
Power e) G G
supply 4 | x 4
cords Inter-unit
ower line
Ground р
*Set the circuit breaker to OFF.
(M Remove power supply cords
from the terminal plate in NO Execute
the outdoor unit. _ — >
* Check insulation resistance rewiring.
of power supply cords.
OK
@ Remove inter-unit power line
from the terminal plate in NO Insulation of
the outdoor unit. ———— a» | outdoor unit
* Check insulation resistance is defective.
of outdoor unit.
OK
® Remove inter-unit power line | \
from the terminal plate in Insulation of
the indoor unit. —— | outdoor unit
« Check insulation resistance is defective.
of indoor unit.
OK
Inter-unit power lines are Execute
defective. —
rewiring.
- 33 -
1032_Х_5
SM830060
N
WHO SHOULD USE THIS MANUAL
This service manual is made to assist the service technician apply his knowledge and training
to this model air conditioner. This manual is written both for experienced service persons
and those who are new to air conditioning service. To help those with less experience or who
are new to this kind of unit we have included more explanations of basic procedures in simple
language than is usual in some service manuals. The experienced technician will of course
find he knows many of these things already and can go directly to the procedures and infor-
mation he needs; the less experienced technician will better understand what to do even
before he arrives on the job, and therefore be better able to work by himself as well as assist
the more experienced technician.
TABLE OF CONTENTS
1. SPECIFICATIONS ....................eeeocanecccerocenararrereeeeene econo nnanerene vocera nao sree eannsssenennssrerees
1-1 Unit Specifications .................e-eee.ee==erseesecieccenecee reser errs sears esse nese
1-2 Major Component Specifications ..............e.=.eer=e-eeeereerreeenen rice n nene eres
(A) Indoor UNit ................. ee... e. seeerreneccaonecenecacaneaenrneo errr essere sees sea sams senna enna
(B) Outdoor Unit ...................eeeeeeserreseeceanceeercecarenc an nnrreeee ne rnrerernernereneneeenenee nene
1-3 Other Component Specifications ...........................6eeeeeneie ran nene nene. 11
(A) Indoor UNit ...............e..eeceseveseccrreacenae enana areneeoaoueaeereercarnr ra recenonecaneareeneceanene 11
(B) Outdoor Unit .............e.eee=eeereesecracennacnnenea ener arena rreneee ere nenererrenecenenarannnene nene. 12
1-4 Dimensional Data..................e.. ee. esecsmeecucorecnecoce errr errr rea sess e nese enn ens 14
(A) Indoor 0 1 TPP 14
(B) Outdoor UNit ...............e..e.......e.eeececcceceaa e enero ernn recen ene eccanerarernecaronenteenenarenee. 15
1-5 Retfrigerant Flow Diagram ......................merscececceoreecerereoerenreecen neon rrreene nen nerne nene. 16
1-6 Operating Range.......................e.eeeeeieeee ercer e essere esses sess sane rere senna 17
2. PROCESSES AND FUNCTIONS ...........................eeseccereccavecaceneereacenananecaarane ener. 19
2-1 Room Temperature Control ....................e.e.ermiimerrreeecene rece erre erre se eran 20
2-2 Freeze Prevention..................._—.._—e=smresirinerereccoccaoe reee sen re renee sree sn sean ra rma reas 21
2-3 Outdoor Fan Speed Control ......................eeeeeeee.ereeeeneeeeeececaneeeeceneeen ar rcenan arena 22
3. ELECTRICAL DATA -....................eecccccorracerocecenenreronenvenmenecaonacacececeneermeeeearereaecececenee. 23
3-1 Indoor UNit .....................eeeeerveeercenareanencene carece aeeroneee era enaracanerecec aerea enerene arcano N. 24
3-2 Outdoor UNit..............ee.....seseererercerereceneen re erenecanaa en eoareceneecanrenenerrearencenernencenea. 26
4. SERVICE PROCEDURES ..................e.....eesrececeoenerscccerceneenonecenaeannrencaneeenrenenanearenmeme 31
4-1 TroubleShOOtINQ eeu rere errr reese reas sree sansa seman sn enann se 32
4-2 A Sensor is DefeCtiVE cucu irises rere eras sana err co. 43
4-3 Operation of Major Electrical Parts ..................—.———.......eemmermececnocan nene een 43
4-4 Checking the Electrical Components ......................-.ereeereeererieenececen ree 44
SM830060
Introduction: Read Me First!
This manual will help you understand and service the air conditioner. To help you find the information you need,
we have divided it into 5 main sections. Each section is divided into chapters with charts, tables and explana-
tions to help you find and repair problems.
Q
Section 1: Specifications, tells you about the physical and electrical make up of the unit, as well
as its heating and cooling capacities. Look in this section to find the correct values for
components and functions.
Section 2: Processes and Functions, explains each different part of the cooling and heating
cycle, and how each control function reacts to changing conditions to keep the room at the set
temperature range.
Section 3: Electrical Data, which has fold-out schematic and wiring diagrams so you can find
the parts you need to check when something is wrong, and see how they should be connected.
Section 4: Service Procedures, has two main parts, a diagnostic chapter to help you find the
specific component to replace or adjust, and a chapter with specific procedures and values to
guide you in checking the electrical components in the unit.
HOW TO USE THIS MANUAL
You can use this manual both as a reference to find specific information about the capacity, functions and
construction of this unit, and as a source of information to help you set up and maintain the unit.
When this unit is not working properly, and the cause is not known, you can use the procedures in
Section 3: Servicing Procedures to find the problem, fix it, and restore the unit to its proper functioning.
This air conditioner has many helpful self diagnostic features to help you identify problem areas quickly.
So you will be ready when a problem happens, we suggest you look this manual over and become familiar with it
by following these steps:
Look at the TABLE OF CONTENTS to get an idea of what is in this manual and where to find
Look at the chapter about TROUBLE SHOOTING, so you are familiar with the way the flow
it.
charts work. They are designed to guide you quickly through the possible causes for each kind of
problem that is likely to happen to the Unit. Particularly read the introduction to this section, and
the parts about the self-diagnosis and error codes which show on the display.
Look at the chapter about CHECKING ELECTRICAL COMPONENTS. You already know
about most of these procedures. This chapter gives you the specific values and methods for
these components. If you don’t know some of these procedures, you can easily learn them here.
Read the Instruction Manual! The Instruction Manual is included here because it helps you help
the user to set the temperature controls properly and know how to take care of any simple
problems that may happen, as well as know when to call for service. The Instruction Manual also
has illustrations, care, and installation information not found in the rest of the service manual. It is
short, and if you read it carefully, you will be able to answer the customers questions easily, and
also know the most efficient ways for setting times and temperatures.
Please use this manual to make your work easier, keep the air conditioner functioning well, and keep your
customers satisfied.
— SM830060
Pa
/
1. SPECIFICATIONS
1-1 Unit Specifications .......................eeereeeereree cea aa 6
1-2 Major Component Specifications ......................e.ee.eemeeeeeee III III III IIA 8
(A) Indoor Unit ..............e.eeeeeesarennenenecenancee ener rar erancanene nene eanenenranaanene nene ananereneene 8
(В) Он[email protected]оог Ол! TT 9
1-3 Other Component Specifications ....................=-=1-111reeceneee eee nene UEUEEREEEEG 11
(A) Indoor UNit ...................eresesecesecerrrrrere rene raeecenaneren error enerere arena narecanrneeenecen 11
(B) Outdoor Unit .................eeee.e.eeerercenrecrrerererranen ere nen ena raneneerren arena eetcenenarene 12
1-4 Dimensional Data..........................eeecerscerreseeerreoceeee nene rrr sere 14
(A) Indoor UNit .................. eee... eeceereeecar erre raren arcano nerecenerreeceen rene anenenenene. 14
(B) Outdoor Unit TT 15
1-5 Refrigerant Flow Diagram ................-e.e..eeccsrcenserrener re ere eee ane 16
1-6 Operating Range .....................eeeeeeerrescenvececinrcenna race een reee sees rama aes ee msn esrenans 17
— SM830060
1-1 Unit Specifications
MODEL No. Indoor Unit TS2432
Outdoor Unit C2432
POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz
PERFORMANCE Cooling
Capacity BTU/h 24,000 23,400
kW 7.03 6.86
Air circulation (Hi) cu.ft. / min. 460 410
Moisture removal (High) Pints / h 7.1 6.9
ELECTRICAL RATINGS
Voltage rating V 230 208
Available voltage range V 187 - 253
Running amperes* A 11.3 11.9
Max. running amperes** A 13.0 13.9
Power input W 2,420 2,360
Power factor | % 93 95
S.E.E.R BTU / Wh 10.0 10.0
Max. starting amperes A 68 62
FEATURES
Controls Microprocessor
Timer ON / OFF 24-hours & Program
Fan speed Indoor / Outdoor 3 and Automatic control / 2 (Auto)
Air deflection Horizontal / Vertical Manual / Automatic
Air filter ~ Washable, easy access
Remote controller (Accessory) RCS - 5PS4U
Refrigerant control Capillary tube
Refrigerant tubing connections Flare type
Compressor Rotary
Operation sound - indoor - НГ/ Ме / 10| dB-A 39 / 37 / 33
Outdoor - Hi de -A 53
REFRIGERANT TUBING
Limit of tubing length ft. (m) 132 (40)
Limit of tubing length at shipment ft. (m) 50 (15)
Limit of elevation difference ft. (m) Outdoor unit is higher than indoor unit: 132 (40)
between the two units Outdoor unit is lower than indoor unit: 83 (25)
Refrigerant tube Narrow tube in. (mm) 1/4 (6.35) |
outer diameter Wide tube in. (mm) 3/4 (19.05)
Refrigerant amount at shipment lbs. (kg) R22 : 5.3 (2.4)
DIMENSIONS 8 WEIGHT Indoor unit Outdoor unit
Unit dimensions Height in. (mm) 7-15/32 (190) 28-15/16 (735)
Width in. (mm) 51-3/16 (1,300) 37 (940)
Depth in. (mm) 26-3/8 (670) 13-3/8 (340)
Package dimensions Height in. (mm) 9-14/32 (240) 32-17/32 (826)
Width | in. (mm) 54-19/32 (1,387) 40 (1,016)
Depth in. (mm) 29-31/32 (761) 16-12/32 (416)
Net weight Ibs. (kg) 57 (26) 150 (68)
Shipping weight lbs. (kg) 75 (34) 165 (75)
Shipping volume cu.ft. (m°) 8.9 (0.253) 12.3 (0.349)
Cooling : DATA SUBJECT TO CHANGE WITHOUT NOTICE
: Indoor air temperature 80 °F DB / 67 °F WB, Outdoor air temperature 95 °F DB / 75 °F WB
: Indoor air temperature 80 °F DB / 67 °F WB, Outdoor air temperature 115 °F DB
Rating conditions (*)
Full load conditions (**)
SM830060
1-1 Unit Specifications
MODEL No. Indoor Unit TS2432
Outdoor Unit CL2432
POWER SOURCE 230 - 208 V / 1 Phase / 60 Hz
PERFORMANCE Cooling
Capacity BTU/h 24,000 23,400
kw 7.03 6.86
Air circulation (Hi) cu.ft. / min. 460 410
Moisture removal (High) Pints / h 7.1 6.9
ELECTRICAL RATINGS
Voltage rating Vv 230 208
Available voitage range Vv 187 - 253
Running amperes* A 11.3 11.9
Max. running amperes** A 13.0 13.9
Power input W 2,420 2,360
Power factor % 93 95
S.E.E.R BTU /Wh 10.0 10.0
Max. starting amperes A 68 62
FEATURES
Controls Microprocessor
Low ambient control Built-in 0 °F
Timer ON / OFF 24-hours & Program
Fan speed Indoor / Outdoor 3 and Automatic control / 3 (Auto)
Air deflection
Horizontal / Vertical
Manual / Automatic
Air filter
Washable, easy access
Remote controller (Accessory) RCS - 5PS4U
Refrigerant control Capillary tube
Refrigerant tubing connections Flare type
Compressor Rotary
Operation sound Indoor-Hi/Me/Lo| dB-A 39/37/33
Outdoor - Hi dB -A 53
REFRIGERANT TUBING
Limit of tubing length ft. (m) 132 (40)
Limit of tubing length at shipment ft. (m) 50 (15)
Limit of elevation difference ft. (m) Outdoor unit is higher than indoor unit: 132 (40)
between the two units Outdoor unit is lower than indoor unit: 83 (25)
Refrigerant tube Narrow tube in. (mm) 1/4 (6.35)
outer diameter Wide tube in. (mm) 3/4 (19.05)
Refrigerant amount at shipment lbs. (kg) R22 : 5.5 (2.5)
DIMENSIONS & WEIGHT Indoor unit Outdoor unit
Unit dimensions Height in. (mm) 7-15/32 (190) 28-15/16 (735)
Width in. (mm) 51-3/16 (1,300) 37 (940)
Depth in. (mm) 26-3/8 (670) 13-3/8 (340)
Package dimensions Height in. (mm) 9-14/32 (240) 32-17/32 (826)
Width in. (mm) 54-19/32 (1,387) 40 (1,016)
Depth in. (mm) 29-31/32 (761) 16-12/32 (416)
Net weight Ibs. (kg) 57 (26) 152 (69)
Shipping weight Ibs. (kg) 75 (34) 168 (76)
Shipping volume cu.ft. (m?) 8.9 (0.253) 12.3 (0.349)
Cooling : DATA SUBJECT TO CHANGE WITHOUT NOTICE
Rating conditions (*)
Full load conditions (**)
: Indoor air temperature 80 °F DB / 67 °F WB, Outdoor air temperature 95 °F DB / 75 °F WB
: Indoor air temperature 80 °F DB / 67 °F WB, Outdoor air temperature 115 °F DB
SM830060
1-2 Major Component Specifications
(A) Indoor Unit
MODEL No. TS2432
Source 230 - 208 V / 1 phase / 60 Hz
Remote controller (Accessory) RCS - 5PS4U
Controller P. C. B Ass'y CR - TS2432
Control circuit fuse 250 V, 3A
Switch Ass'y SW - X363GS
Fan (Number ... diameter) in. (mm) Centrifugal (4 ... 5-1/8(130))
Fan motor
Model SR4X - 51A6P
Source 230 - 208 V / 1 phase / 60 Hz
No. of pole … r.p.m. (230 V, High) rpm 1,187
Nominal output W 31
Coil resistance Q BRW - WHT 1110 , ORG - YEL : 16.7
(Ambient temperature 68 °F) WHT - VLT : 354 , BLK - PNK : 239
VLT - ORG : 134 , YEL - BLK 136.6
Safety device
Operating temperature Open °F 266 + 14.4
Close °F 174.2 + 27
Run capacitor VAC, pF 440 V , 1.5 uF
Heat exchanger
Coil Aluminum plate fin / Copper tube
Rows … Fins per inch 3... 14.9
Расе агеа #2 (m?) 1.81 (0.168)
Auto louver motor
Model No. MT8 -3C
Auto louver motor ... Rated V, W, rom 240 VAC ,3W, 3 rpm
Coil resistance (Ambient temperature 77 °F) Q 16,430 © + 8 %
DATA SUBJECT TO CHANGE WITHOUT NOTICE
SM830060
1-2 Major Component Specifications
(B) Outdoor Unit
MODEL No. C2432
Source 230 - 208 V / 1 phase / 60 Hz
Compressor Rotary (Hermetic)
Model C - 2R170H6S
Source 230 - 208 V / 1 phase / 60 Hz
Nominal output W 1,700
Compressor oil cc 800
Coil resistance (Ambient temperature 77 °F) Q C-R:0.885,C-S:1.773
Safety device Internal type
Overload relay models —
Operating temperature Open °F 297 + 9
Close °F 198 + 20
Operating ampere (at 77 °F) A —
Run capacitor VAC, uF 400 V, 40 uF
Refrigerant amount charged at shipment ibs. (kg) R22: 5.3 (2.4)
High pressure switch ACB - 1UB11
Set pressure OFF kg/cm? 30 15%
ON kg/cm? 24 + 2.0
Fan Propeller
Number...diameter in. (mm) 1... 18-3/32 (460)
Fan speeds 2 (AUTO)
Fan motor
Model KFC6T - 91D6P
Source 230 - 208 V / 1 phase / 60 Hz
No. of pole … rpm (230 V, High) rpm 6... 879
Nominal output W 110
Coil resistance Q BRW — WHT 67.14 , VLT - YEL : 11.42
(Ambient temperature 68 °F) WHT — VLT 64.85 , YEL — PNK 10.60
Safety device
Operating temperature Open °F 248 + 41
Close °F 171 + 59
Run capacitor VAC, uF 440 V, 4 uF
Heat exchanger
Coil Aluminum plate fin / Copper tube
Rows ... Fins per inch 2... 14.1
Face area ft.2 (m?) 6.63 (0.616)
DATA SUBJECT TO CHANGE WITHOUT NOTICE
SM830060
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1-2 Major Component Specifications
(B) Outdoor Unit
MODEL No. CL2432
Source 230-208 V/ 1 phase / 60 Hz
Controller P.C.B. Ass'y CR - CL2432 (Microprocessor)
| Control circuit fuse 250 V, 3A
Compressor Rotary (Hermetic)
Model C - 2R170H6S
Source 230 - 208 V / i phase / 60 Hz
Nominal output W 1,700
Compressor oil CC 800
Coil resistance (Ambient temperature 77 °F) Q C-R:0885,C-S:1.773
Safety device Internal type
Overload relay models —
Operating temperature Open °F 297 + 9
Close °F 198 + 20
Operating ampere (at 77 °F) A —
Run capacitor VAC, uF 400 V, 40 pF
Crank case heater V, W 230 V, 30 W
Refrigerant amount charged at shipment Ibs. (kg) R22 : 5.5 (2.5)
High pressure switch ACB - 1UB11
Set pressure OFF kg/cm? 30 + 52
ON kg/cm? 24 + 2.0
Fan Propeller
| Number...diameter lin. (mm) 1... 18 - 3/32 (460)
Fan speeds 3 (AUTO)
Fan motor
Model KFC6T - 91D6P
Source 230 - 208 V / 1 phase / 60 Hz
No. of pole ..... rpm (230 V, High) 6... 879
Nominal output W 110
Coil resistance Q BRN — WHT 67.14 , VLT —- YEL : 11.42
(Ambient temperature 68 °F) WHT — VLT 64.85 , YEL — PNK : 10.60
Safety device internal type
Operating temperature Open °F 248 + 41
Close °F 171 + 59
Run capacitor VAC, uF 440V, 4 uF
Heat exchange
Coil Aluminum plate fin / Copper tube
Rows ..... Fins per inch 2... 14.1
Расе агеа ft. (m°) 6.63 (0.616)
— 10 —
DATA SUBJECT TO CHANGE WITHOUT NOTICE
SM830060
1-3 Other Component Specifications
(A) Indoor Unit
MODEL No. TS2432
Power Transformer ATR — 1104A
Rated Primary AC 220 V, 60 Hz
Secondary 10.6 V,0.93 A
Capacity 9.85 VAC
Coil resistance
Q WHT - WHT 101 , BRN - BRN : 042
(Ambient temprature 77 °F)
Thermistor cut off temperature °F 266
Thermistor (Coil sensor) РВС - 41Е - 514
Coil resistance Ко 14 °F : 23.7 , 41 °F : 12.1
23 °F : 18.8 , 50°F: 9.7
32 °F : 15.0 , 59°F: 8.0
Thermistor (Room or coil sensor) КТЕС - 35 - 56
Coil resistance Ко 32°F: 16.5 , 104 °F: 2.7
41 °F : 12.8 , 113% : 2.2
50°F: 10.0 , 122% : 1.8
68°F: 6.3 , 131% : 15
86°F: 4.0 ,
Switch Ass'y SW - X363GS
Indicator Lamp Ass'y IND - TS2432
Synchronized Motor MT8 - 3C
—11—
DATA SUBJECT TO CHANGE WITHOUT NOTICE
SM830060
1-3 Other Component Specifications
(B) Outdoor Unit
MODEL No. C2432
Compressor Motor Magnetic Contactor FMCA - 1UL
Coil rated AC 240 V, 60 Hz
Coil resistance (at 77 °F) | «a 580 + 15 %
Contact rated (Main) AC 230 V, 20 A
Contact rated (Auxiliary) AC 230 V, 3A
Power Relay HH62S
Coil rated AC 240 V, 60 Hz
Coil resistance (at 77 °F) kQ 17.2
Contact rated AC 220 V, 5A
Thermostat (Coil sensor) YTB - 4U305F
Operating Temperature °F 79+ 3 OFF
75:3 ON
Contact rated 200t0240V, 1A
Thermistor (PTC) TDK - 101YV
Rated
Max. voltage AC 400 V
Max. ampere 115A
Resistance (at 77 °F) Q 100 * 2 %
— 12 —
DATA SUBJECT TO CHANGE WITHOUT NOTICE
SM830060
(ON
1-3 Other Component Specifications
(B) Outdoor Unit
MODEL No. CL2432
Compressor Motor Magnetic Contactor FMCA - 1UL
Coil rated AC 240 V, 60 Hz
Coil resistance (at 77 °F) Q 580 + 15%
Contact rated (Main) AC 230 Y, 20A
Contact rated (Auxiliary) ‘ AC 230 V, 3A
Power Relay HH62S
Coil rated AC 240 V, 60 Hz
Coil resistance (at 77 °F) КО 17.2
Contact rated AC220V,5A
Power Transformer ATR - 135B
Rated
Primary AC 220 V, 60 Hz
Secondary 14 V, 0.2 A
Capacity 2.8 VAC
Coil resistance (at 78 °F ) Q WHT — WHT : 4825 ‚, BRN — BRN : 3.95
Thermal cut off temperature °F 266
Thermistor (Outdoor Temp. sensor) РВС - 41Е - $26
Coil resistance kQ 14 °F : 23.7 , 50 °F : 9.7
23°F: 18.8 os 68 °F : 6.5
32 °F : 15.0 , 86 °F : 4.4
41 °F : 12.1 Cy 104 °F : 3.1
113°F : 2.6
Solenoid control valve or coil
Solenoid control valve
NEV - 603DXFU (HOT GAS BYPASS)
Solenoid coil NEV - MOAQ505UBO
Thermistor (PTC) TDK — 101YV
Rated
Max. voltage AC 400 V
Max. ampere 11.5 А
Resistance (at 77 °F) | © 10079 %
DATA SUBJECT TO CHANGE WITHOUT NOTICE
—13—
SM830060
1-4 Dimensional Data
Indoor Unit: TS2432
15-25/32
LLL,
1-3/32
16
Zi 1
he
(Suspension bolt hole pitch)
48-7/16 (Suspension bolt hole pitch)
НА
À
(Service space)
NALA LALLY, va
| 24 or more
|
Dimension : inch
« Remote controller (Accessory) ( Drain connection
@ Drain connection for left side
Hole for wall-through piping (View from front)
® Refrigerant liquid line (1/4") Flare connection
(O Refrigerant gas line (3/4") Flare connection
(® Hole for rear side refrigerant tubing
Hole for through-the-wall refrigerant tubing (23-15/16" hole)
@ Hole for upper side refrigerant tubing (Knockout hoie)
Hole for right side refrigerant tubing (Knockout hole)
Hole for left side drain connection (Knockout hole)
(9 Hole for power supply cord (Knockout hole 87/8")
@ Infrared rays receiver for wireless remote controller
6-25/32
4-23/32
0
и
1-4 Dimensional Data
(B) Outdoor Unit: C2432, CL2432
6-11/16 . 26 | |4-21/64
| ©
15
N
ï El v Y 1 1 |
Sl
y EE
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MON x : !
e
0 A
A
37 .
ve
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> ®
8 +
+ ©
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—15—
Dimension : inch
(1 Hole for anchor bolt (4-81/2)
+
he =®
® Refrigerant tube joint (narrow tube)
Flare connection 1/4 in (6.35 mm)
® Refrigerant tube joint (wide tube)
Flare connection 3/4 in (19.05 mm)
@® Refrigerant tubing inlet
® Power supply inlet
105 CS
SM830060
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1-5 Refrigerant Flow Diagram
Indoor Unit: TS2432 Outdoor Unit: C2432
rm — — - Wide tube _ _ _
service valve
mr nn - _
O.D. o
| 3/4" Accumulator 2 |
_ (19.05mm) 0) a
8 5
< O
: vo
br _
High
pressure
switch |
Condenser
Narrow tube | HP |
service valve
SS dE J
O. D. «<—
1/4" | Sub-condenser
— —— (6.35 mm)
106 X S
Indoor Unit: TS2432 Outdoor Unit: CL2432
-————| r Wide tube _ _—
Do | ¡ Service valve
OP
D. Accumulator a
3/4 — > ©
| 5 (19.05mm) Е
© G 1
= Capill “y
apilla
Ш | Ло)
HGBV
High 5
pressure 2;
switch 3
=
Narrow tube | HP | ©
| service valve
1
a J
1/a" | Sub-condenser
(6.35 mm) - -—
1027 X_S
SM830060
—16-
1-6 Operating Range
° 152432 / С2432
Temperature Indoor Air Intake Temp. | Outdoor Air Intake Temp.
Maximum 95 °F DB/ 71 °F WB 115 °F DB
Minimum 67 °F DB / 57 °F WB 67 °F DB
- TS2432/ CL2432
Temperature Indoor Air Intake Temp. | Outdoor Air Intake Temp.
Maximum 95 °F DB / 71 °F WB 115 °F DB
Minimum 67 °F DB / 57 °F WB 0 °F DB
wd
SM830060
— 17 —
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SM830060
— 18 -
2. PROCESSES AND FUNCTIONS
2-1 Room Temperature Control ..................e....eeseecericcanee nacen ehe R ER EEEEE KERNE 20
2-2 Freeze Prevention... eee cere reese ree sree sean sree sem nes 21
2-3 Outdoor Fan Speed Control .................eeeeeee.ecevecceroernececcne eee ecc eee eens 22
SM830060
— 19-
2-1 Room Temperature Control
The Unit adjusts room temperature by turning the outdoor unit's compressor ON and OFF.
This process is controlled by the thermostat located in the remote control unit.
The figures on this and the next pages show how each part of the system performs when the
room temperature changes and the thermostat activates the compressor to start (thermo ON)
or stop (thermo OFF). Fig. 1 shows about the cooling cycle.
ROOM TEMPERATURE
WITHIN 3 MINUTE MORE THAN 3 MINUTES
S. T.+ 1°F > ld di mmm moms Tag osm a mmo NOT
GET TEMP. T°F THERMO ON THERMO ON
THERMO OFF THERMO OFF
© MORE THAN HERMO OF
3 MINUTES 5 MINUTES
OFF
OFF
COMPRESSOR
ие es Ae a
o
TALA EE
E e Cea
SET SPEED
es
PLL,
+ Le
RER ESS
INDOOR FAN
Ei OFF OFF
OUTDOOR FAN /
1028 X_5
Fig. 1
Chart Summary and Explanations
O Once the compressor starts, it keeps running for 5 minutes.
QQ Once the compressor stops, it will not start running again for 3 minutes.
Q If you change the operation mode during the cooling cycle, the control circuit stops the
compressor for 3 minutes.
Q For 5 minutes after the compressor is first turned on, and for 3 minutes after it is turned off,
the compressor is not controlled by the room sensor.
О Thermo ON: When room temperature rises 1 °F above the set temperature T°, (T “+1 °F):
Compressor — ОМ
Q Thermo OFF: When the room temperature is equal to or below the set temperature T°:
Compressor — OFF
7
SM830060
— 20 —
tats!
2-2 Freeze Prevention
Freeze Prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the
efficiency of the unit, and frost buildup on the coil blocks cool air circulation from the indoor
unit’s fan.
FREEZE FREEZE
PREVENTION PREVENTION
MORE THAN 10 MINUTES |6 MINUTES | 10 MINUTES 6 MINUTES |
INDOOR COIL __,
TEMPERATURE
20°F _(THERMOON)
(THERMO OFF)
Gig
OFF OFF me
COMPRESSOR —
OFF ON. OFF
OUTDOOR FAN
cette
o a
Sons mea : ще
с =
SET SPEED
+
e. es Sa ht A o
os
i
ue
INDOOR FAN
1029 X $
Fig. 2
SM830060
— 21 —
2-3 Outdoor Fan Speed Control
(1) C2432 Type
* In low outdoor temperature, the outdoor fan is set automatically from HIGH to LOW
to prevent the indoor heat exchanger from freezing.
* When the outdoor temperature falls below 78 °F, the outdoor fan is set from HIGH to
LOW automatically. When the outdoor temperature rises to 82 °F, the outdoor fan is
set from LOW to HIGH automatically.
(2) CL2432 Type
- In low outdoor temperature, the outdoor fan is set automatically from HIGH to MED,
LOW to prevent the indoor heat exchanger from freezing.
- When the outdoor temperature falls below 77 °F, the outdoor fan is set from HIGH to
MED automatically. When the outdoor temperature rises to 81 °F, the outdoor fan is
set from MED to HIGH automatically.
* When the outdoor temperature falls below 59 °F, the outdoor fan is set from MED to
LOW automatically. When the outdoor temperature rises to 63 °F, the outdoor fan is
set from LOW to MED automatically.
760 — = — — — р
т
a Y A
CC
<
Q
|
= ago - = - - —|- -|- - - - -
O В
= УМ
Ta
230 1
HGBV
(HOT GAS
BYPASS VALVE) mm
47 50 59 63 77 81 Cex
OUTDOOR AIR TEMPERATURE °F DB
Fig. 3
SM830060
— 99 —
3. ELECTRICAL DATA
3-1 Indoor Unit (Electric Wiring Diagram, Schematic Diagram) 24
3-2 Outdoor Unit (Electric Wiring Diagram, Schematic Diagram) ...................e.ee.er.. 26
SM830060
— 23 —
4 e
a de
a E. de x
О do
Te CA 7, ta Mo
rs
i
.
2 SEA e
o
UA
oa
3-1 Indoor Unit
M TS2432
» Electric Wiring Diagram
TH1 (Coil)
GRN/YEL
Earth
Terminal
(=
Switch
Assy
IND Lamp
Assy
ae
TH2 (Room)
BLK
WHT
Ш
2P(YEL) 3P(WHT)
Controller
PRY SEC
FM 7P(WHT) i: 3P(WHT)
MHL = 49FMI
ВС!
т TT
«= & == DA > E
PHT218$ PAT Si
Connector 511215 © 5[1]2| se
TR1
Terminal Plate(4P) =
To Outdoor Unit $
oT
o
Earth
Terminal Earth
Terminal
W 854-2-5268-593-00-0 (TS2432)
— 24 —
SM830060
3-1
Indoor Unit
(1) TS2432
* Schematic Diagram
0 —.——]—]— LS e a e ma ma ,— CR-TS2432,.
| ' | Controller E.
ap-1 : | | TTT |
= PRY — в
| (3A) |
ES
| В
| >| | °|
| o © o
| = > >
4P-4 1 a <
Ф—{5}
' - DP
e — {i —
©)
49FMI
—— — -—-
4P-2 -
e—[1- w wv '
Symbols Description Symbols Description
FMI Indoor Fan Motor TH1 Thermistor (Indoor Coil)
49F| Indoor Motor Thermal Protector | TH2 Room Thermistor
RC1 Running Capacitor CR-TS2432 | Indoor Controller
F1 Fuse IND Indicator Lamp Assy
DP Drain Pump SW Switch Assy
LM Auto Louver Motor ® Terminal Plate
TR1 Power Transformer [0 Connector
RY1-RYS | Auxiliary Relay (+) Terminal
FS Float Switch
— 25 —
O 854-2-5268-593-00-0 (TS2432)
SM830060
Cea
cs
re
ns
A
EE TTT Taam a a a ar ame a E
me
os
3-2 Outdoor Unit
D C2432
Electric Wiring Diagram
|
7 5 6
®
Terminal Plate (6P) e
LL 3 1 Pa 2
El — RED 8
E
7 ——--4192 - A
8 S—WHT—1 2 >
El — 16 x © D
£ = Ps
= Fr ne RE
ar> — HH L1
3-8 L2 Connector 2P (WHT) 63PH
AUF — 7 2
SID G
El —
a с
Earth
Terminal
235
L
— WHT
O
GRN/YEL
YEL
œ 8 >
T= о-— НЕО
LL O54
—=2 +
о ©
> ©
с о
S ©
Relay
=
©
5%
O
O:
8 3 1 4 2
Earth
(E) Terminal
Q
Ly
{с
С Earth
Terminal
49РО 9
WW 854-2-5268-594-00-0 (C2432)
SM830060
— 26 —
3-2 Outdoor Unit
M C2432
« Schematic Diagram
2Y
63PH
«
oÈo—e
2Y
Symbols Description
CM Compressor motor
FMO Outdoor Fan Motor
49FO Outdoor Fan Motor Thermal Protector
52C Compressor Motor Magnetic Contactor
63PH High Pressure Switch
23S Fan Speedcontrol Thermostat
RC1, 2 Running Capacitor
PTC PTC Thermistor
1Y, 2Y Auxiliary Relay
(1 Connector
®Ф Terminal Plate
© 854-2-5268-594-00-0 (C2432)
— 97 —
SM830060
tte
tt,
BE
3-2 Outdoor Unit
@ CL2432
N
oo
y
Q
I T .
E ©
©
7 o
I =
LO
= со
ЕЁ ©
de LO
oN
3
со
Controller (CR-CL2432)
P Connector
$
Earth
Terminal
* Electric Wiring Diagram
Connector
2P WHT)
63PH
CH
a mn
LHM— Ni | a ELA
1HM—-|- НМ
{
BLK
RC1
PTC
g —WHT
LHM
a M18
a3d
a
©
$
% dn
© I -
E ra > J9 =
ELT И SE
dE
eee UA e
uLN JO0PU| OL AOËZ/ABOZ
dl ZH09
Ajddns Jemod
SM830060
3-2 Outdoor Unit
2) CL2432
Terminal
P— 1
m2
Plate (GP) IF Fea —
« Schematic Diagram
= ste = я = ver = — — © «наше = «ше — e CR-CL2432,
Controller
(о = ше © еее = не = = = нее = иен © неее = = = = = же e O = MU de dis e =
7
Symbols Description
CM Compressor Motor
CH Crankcase Heater
FMO Outdoor Fan Motor
49FO Outdoor Fan Motor Thermal Protector
52C Compressor Motor Magnetic Contactor
HGBV Hot Gas Bypass Valve
PTC PTC Thermistor
TR Power Transformer
TH Thermistor (Outdoor Temperature)
RC1, 2 Running Capacitor
RY 1-3 Auxiliary Relay
1Y Auxiliary Relay
CR-CL2432 | Outdoor Controller
F1,2 Fuse
- | ® Terminal Plate
| | O Connector
(© Terminal
|63PH High Pressure Switch
© 854-2-5268-570-00-1 (CL2432)
— 29 —
SM830060
ил ae
= i rn
dao
«
ret
a
— 30 —
Ae
e
SE
RE
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SM830060
4. SERVICE PROCEDURES
4-1 TroUDIESNOONG EN 32
(1) Check before and after Troubleshooting …………………………..…….………… 32
(2) Air Conditioner does not Operate ……………….……….………….………………crecccrrenenees 33
(3) Outdoor Unit does not RUN ……….….…...……………rrrrrrrrcccrerrenreneerenrrnsssssrriiers 37
(4) Indoor Unit does not RUN cence eee eee eee 39
(5) Some Part does not Operate .............................em. e... e ee e es 39
(6) Outdoor Fan does not Run ........................ee.eeei eee eee eee eee. 40
(7) Outdoor Fan Speed is not Switched from High to Low even when the
Outdoor Temperature Falls below 78 °F (C2432 Type) ...................w.... 40
(8) Outdoor Fan Speed is not Switched from High to Med even when the
Outdoor Temperature Falls below 77 °F
Outdoor Fan Speed is not Switched from Med to Low even when the
Outdoor Temperature Falls below 59 °F (CL2432 Type) ausser 40
(9) Outdoor Fan does not Run for CL2432 .................e......ee. seee 41
(10) Compressor does not Run ...........................e eee ener era ree 41
(11) Poor Cooling ......................ee einen een ee eee eee eerste eee eee seen 42
(12) Excessive COOlÏNG …….………….…sserererrecrensecrrrsenrarenreneennrenranenenr races 42
4-2 À Sensor is Defective.……..…...….….….….….…..…..…reseeccranennenenennnmnnnnnnnnnnnnnnn=n*e*n*n*= 43
4-3 Operation of Major Electrical Parts ............................comeee e aerea eee 43
4-4 Checking the Electrical Components .................... ee... eee 44
(1) Measurement of Insulation Resistance .................. ee. 44
(2) Checking the Protective Devices... 45
(3) Checking the Electrical Parts ………….….……….……….………ccenecrenmmnnneessercs 46
(4) Thermistor Characteristic Curve...................... eee crie 47
SM830060
—31—
Troubleshooting
(1) Check before and after Troubleshooting
Many problems may happen because of wiring or power supply problems, so you
should check these areas first. Problems here can cause false results in some of
the other tests, and so should be corrected first.
® Check power supply wiring
(a) Single-phase
О Check that power supply wires are correctly connected to terminal No. 1
through No. 4 on the 4P terminal plate in the indoor unit and L1 and L2 on
the 6P terminal in the outdoor unit.
@ Check inter-unit wiring
DO Check that inter-unit control wiring (AC 230 - 208 V Line voltage) is cor-
rectly connected between the indoor unit and outdoor unit.
Single-phase outdoor unit
Disconnect SW
(Field supply)
Indoor Unit Outdoor Unit
B
С° ТО
Oo 110
© fet | O
(070: O, Power supply
Inter-Unit L1 B
Wiri
(Line voltage) © NA
Fig. 4
(3 Check power supply
QA Check that voltage is within the specified range (+10 % of the rating).
QO Check that power is being supplied.
If the following troubleshooting must be done with power being supplied, be
careful not to touch any uninsulated live part that can cause ELECTRIC
SHOCK.
@ Check the lead wires and connectors in indoor and outdoor units.
AQ Check that the sheath of lead wires is not damaged.
О Check that the lead wires are firmly connected at the terminal plate.
QQ Check that the wiring is correct.
® Reference
* Condition of general cooling operation (Thermo. ON)
SWEEP .................. ON
Indoor fan speed .... HIGH
SM830060
— 32 —
Please Read Before Starting
This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an important
part of your job to install or service the system so it operates
safely and efficiently.
For safe installation and trouble-free operation, you must :
@® Carefully read this instruction booklet before beginning.
e Follow each installation or repair step exactly as shown.
e Observe all local, state, and national electrical codes.
e Pay close attention to all warning and caution notices
given in this manual.
WARNING
This symbol refers to a hazard or
CAUTION unsafe practice which can result in
personal injury or product or
property damage.
This symbol refers to a hazard or
unsafe practice which can result in
severe personal injury or death.
If Necessary, Get Help
These instructions are all you need for most installation sites
and maintenance conditions. If you require help for a special
problem, contact our sales/service outlet or your certified dealer
for additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible for improper
installation or maintenance service, including failure to follow
the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
OUEN NN ANT ANAL ENDS EPA
ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE THIS SYSTEM.
+ Do not supply power to the unit until all wiring and tubing are
completed or reconnected and checked.
* Highly dangerous electrical voltages are used in this system.
Carefully refer to the wiring diagram and these instructions
when wiring. improper connections and inadequate ground-
ing can cause accidental injury or death.
- Ground the unit following local electrical codes.
+ Connect all wiring tightly. Loose wiring may cause overheat-
ing at connection points and a possible fire hazard.
When Transporting
JAR Ta ANAT PEE EEF ARAN EEE RR TEFEN RAE RESET RPE RE FFF AT SEER FIFRA FPF AT ETAT R REE
Be careful when picking up and moving the indoor and outdoor
units. Get a partner to help, and bend your knees when lifting to
reduce strain on your back. Sharp edges or thin aluminum fins
on the air conditioner can cut your fingers.
When Installing
...In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to walls
and floors.
...In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents water
damage and abnormal vibration.
...In an area with High Winds
Securely anchor the outdoor unit down with bolts and a metal
frame. Provide a suitable air baffle.
...In a Snowy Area (for Heat Pump-type Sys-tems)
Install the outdoor unit on a raised platform that is higher than
drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
+ Ventilate the room well, in the event that refrigerant gas
leaks during the installation. Be careful not to allow contact
of the refrigerant gas with a flame as this will cause the
generation of poisonous gas.
« Keep all tubing runs as short as possible.
- Use the flare method for connecting tubing.
+ Apply refrigerant lubricant to the matching surfaces of the
flare and union tubes before connecting them, then tighten
the nut with a torque wrench for a leak-free connection.
+ Check carefully for leaks before starting the test run.
Depending on the system type, liquid and gas lines may be
either narrow or wide. Therefore, to avoid confusion the
refrigerant tubing for your particular model is specified as either
“narrow” or “wide” rather than as “liquid” or “gas”.
When Servicing
* Turn the power OFF at the main power box (mains) before
opening the unit to check or repair electrical parts and
wiring.
- Keep your fingers and clothing away from any moving parts.
- Clean up the site when installation is finished. Check that no
metal scraps or bits of wiring have been left inside the unit.
[ CAUTION |
- Ventilate any enclosed areas when installing or testing the
refrigeration system. Contact of refrigerant gas with fire or
heat can produce poisonous gas.
+ Confirm after installation that no refrigerant gas is leaking. If
the gas comes in contact with a burning stove, gas water
heater, electric room heater or other heat source, it can
cause the generation of poisonous gas.
SM830060
(b) Circuit breaker trips in several minutes after turning the air conditioner on.
* There is a possibility of short circuit.
check capacity of circuit No Replace it with a
- > suitable one.
Is capacity of circuit (= larger capacity)
breaker sufficient ?
* Check resistance of
outdoor fan motor winding.
- Check resistance of
compressor motor winding.
- Check resistance of louver
motor winding.
1056 X $
2) Neither indoor unit nor outdoor unit runs.
A. Power is not supplied
Circuit breaker
is tripped. Reset the breaker.
* Check power supply.
Is power being supplied NO
to outdoor unit ? Wait for recovery
Power failure. || or consult power
supply company.
0615 X S
B. Check remote control unit.
- Try to run both indoor and} NO
outdoor units with another
remote control unit.
yo
The other remote control
unit is defective.
æ— Refer to item C.
0616_X_5
SM830060
— 34 —
C. Check “Operation selector” switch in the indoor unit.
* Has “Operation selector”
switch been set to ON
position ?
y NO
Set “Operation selector”
switch to ON.
YES
y But neither unit runs.
Switch Ass'y or P.C.B.
Ass'y in the indoor unit
is defective.
D. Check compressor motor protectors.
(a) High pressure switch (63PH)
Does high pressure switch — of the socket
actuate ? (63PH) |
y YES
* Is outdoor heat exchanger
coil dirty or are there YES
obstacles near air suction
inlet of outdoor unit ?
y NO
* Check if outdoor fan rotates.
Refer to “Only outdoor fan
does not run.”
E. Transformer in indoor unit.
* Check resistance of
transformer winding. (TR1)
1033_X_S
— 35 —
>
IND. LAMP Ass'y or P.C.B.
Ass'y in the indoor unit
is defective.
0617 X 5
k hiah . Disconnect the socket from 2P (WHT) connector.
* Check high pressure switch. Check the continuity between No.1 and No.2 poles
Clean heat exchanger coil
or remove obstacles.
0618 X_S
SM830060
* Check coll resistance of
auxiliary relay.
(1Y or 2Y)
0620_X_S
* Check fuse on the P.C.B.
Ass'y in the indoor unit
for continuity.
Y When the fuse blows.
* Check resistance of
primary and secondary
winding of transformer.
(TR)
y OK
* Check resistance of indoor
fan motor winding.
(FMI)
y OK
* Check resistance of louver
motor winding.
(LM)
OK
F. Check. auxiliary relay. (1Y or 2Y)
С. Check fuse on the P.C.B. Ass'y in the indoor unit.
— 36 —
* Check coil of compressor
motor magnetic contactor.
(52C)
y OK
* P.C.B. Ass'y is defective.
1079 X 5
SM830060
(3) Outdoor Unit does not Run.
A. Check COOL / FAN selector switch in the remote control unit.
. Is COOL/FAN selector switch
set to COOL ?
NO
Check set temperature.
Try to lower set
temperature by Temperature
setting button “COOLER”.
YES
* Set “Operation selector”
switch to TEST in the
indoor unit.
y Outdoor unit runs.
Is room temperature too
low ?
y NO
* Try to run both indoor and
outdoor units with another
remote control unit.
y OK
The other remote control
unit is defective.
(Room sensor in the remote
control unit is defective.)
0624 X 5
— 37 —
| Set to COOL.
0623 X $
SM830060
en
Tet e e
re у
de el 3 e Sl ou y Sal e 2 : ;
ue EDO 5 e 5 на ит Я re oe a
C. Check compressor motor magnetic contactor.
* Check coil resistance of
compressor motor magnetic
contactor. (52C)
1035 X 5
D. Check indoor unit P.C.B.
* Check P.C.B. Ass'y.
* Check voltage between
terminals No.2 and No.4 at
terminal plate.
No voltage appears.
P.C.B. Ass'y is defective.
0628_Х 5
Е. Check outdoor unit P.C.B. (CL2432 Type)
* Check P.C.B. Ass'y.
* Check voltage between
terminals L1 and L2 at
terminal plate.
No voltage appears.
P.C.B. Ass'y is defective.
1036 X_5
SM830060
—38—
(4) Indoor Unit does not Run.
(Indoor fan and louver motor do not run.)
P.C.B. Assy is defective.
0630 X §
(5) Some Part does not Operate.
A. Indoor fan does not run.
Check fan casing
—æi for foreign matter [-m| Remove foreign
Fan cannot on the inside. matter or repair.
* Check fan rotation. be rotated.
Rotate the fan gently once
or twice by hand. Fan motor burnout
>| or foreign matter |] Repair or replace.
in bearing.
* Check resistance of fan
motor winding.
y OK
* Check fan motor capacitor.
y
Relay RY1 or RY2 on the
P.C.B. Ass'y is defective. oor x. 5
B. Louver motor does not run.
* Check resistance of
louver motor winding.
y
P.C.B. Ass'y or remote
control unit is defective.
0632 X 5
SM830060
— 39 —
(6) Outdoor Fan does not Run.
Check fan casing |
| for foreign matter |-#| Remove foreign
Fan cannot on the inside. matter or repair.
* Check fan rotation. be rotated.
Rotate the fan gently once
or twice by hand. - Fan motor burnout
>| or foreign matter ¡—»] Repair or replace.
in bearing.
* Check resistance of fan
motor winding.
y OK
* Check fan motor capacitor
» Check continuity between
terminals on the compressor
motor magnetic contactor.
0633 X §
(7) Outdoor Fan Speed is not Switched from High to Low even when the Outdoor
Temperature Falls below 78 °F. (C2432 Type)
« Check the thermostat (23S).
1037 X 5
(8) Outdoor Fan Speed is not Switched from High to Med even when the Outdoor
Temperature Falls below 77 “F.
Outdoor Fan Speed is not Switched from Med to Low even when the Outdoor
Temperature Falls below 59 °F. (CL2432 Type)
« Check outdoor unit P.C.B.
Ass'y
y OK
* Check resistance of outdoor
temp sensor.
0722 XS
SM830060
— 40 —
(9) Outdoor Fan does not Run for CL2432.
« Check fuse on PCB Ass'y in
outdoor unit for continuity.
If fuse blows,
* Check resistance of primary
winding of transformer. (TR)
1038 X_S
(10) Compressor does not Run.
« Check compressor motor capacitor Wait for 30 minutes until com-
(RCH). | pressor has cooled.
OK
Compressor runs.
* Check PTC. Compressor internal thermal
OK protector is operated.
* Check resistance of compressor
motor winding.
* Check power supply voltage.
Is voltage abnormally low?
NO
* Is outdoor heat exchanger coil dirty
or are there obstacles near air
suction inlet?
1039 X_S
SM830060
—41—
(11) Poor Cooling.
Check installation position
of remote control unit.
* Does cool air from air condi-
tioner reach remote control
unit directly ?
Change installation
* |s wide tube between indoor unit
and outdoor unit insulated ?
YES
* Measure temperatures of suction
and discharge air of indoor unit.
YES p= position of remote
control unit.
NO Insulate wide tube and
1 then execute taping with
narrow tube.
Temperature
difference | possibility of Charge
is small.
— | refrigerant || refrigerant
shortage. (R22).
Temperature difference between
suction and discharge air is
large enough (Approx. 10 deg. or more).
» Check clogging of air
filter.
* Is fan speed set to LOW ?
YES
Air filter is clogged.
1 Clean filter.
Set fan speed to either
* Review cooling load estimate,
if performance of air conditioner
is normal.
HIGH or MEDIUM.
Reduce cooling load or
(12) Excessive Cooling.
* The set temperature is too low.
YES
replace the unit with
higher cooling capacity.
1040 _X $
Set the temperature to
* |s the remote contro! unit installed
at a place where it can
detect the room temperature
properiy ?
NO
higher value using
temperature setting
button of the remote
control unit.
Change installation
— 42 —
position of the remote
control unit.
0637 X §
SM830060
4-2 A Sensor is Defective.
@ Indoor (heat exchanger) coil temp. Sensor is defective.
(a) Open (=No continuity in sensor)
Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minutes
when sensor opens.
(b) Short
“Freeze Prevention” does not operate when dehumidified water is frozen on the |
indoor coll.
@ Room temp. Sensor (in the remote control unit) is defective. o
(a) Open (=No continuity in sensor)
Neither outdoor fan nor compressor runs.
(b) Short
Outdoor fan and compressor do not stop. — Excessive cooling.
4-3 Operation of Major Electrical Parts
Operation Mode Operation Indoor unit and Remote Control unit Oudoor unit
Indicator lamps Fan | Fan | Compressor
(Function) Room Cool | Timer Night setback Swee
Temp. Energy saver Р
Manual Thermo.ON O O O O O
Thermo.OFF O O O
Night Thermo.ON O O O O O O
Cool | setback Thermo.OFF O O O
ng Timer ON Timer O
(set) OFF Timer O O O O | O O
Freeze prevention O O O
Fan O O
Sweep Cool O O O O O O
Fan O O
Flap C x * * *
Stop ool O O O O O O
Fan O O
NOTE O* Refer to Cooling Mode.
SM830060
— 43 —
4-4 Checking the Electrical Components Earthed wire
TA,
(1) Measurement of Insulation И, \
Resistance //
- The electrical insulation is acceptable when the Probe Ш
resistance exceeds 1 MQ. / Insulation
tester Fig. 5
0638_X_S
M Power Supply Wires
Clamp the earthed wire of the Power Supply wires Terminal plate |
with a lead clip of the insulation resistance tester and
measure the resistance by placing a probe on either
of the power wires. (Fig. 5)
Then measure the resistance between the earthed
wire and the other power wires. (Fig. 5)
@ Indoor Unit
Clamp an aluminum plate fin or copper tube with the
lead clip of the insulation resistance tester and
measure the resistance by placing a probe on the Clip
terminal plate (Fig. 6) _
Copper Xx `` Insulation
tube or O O tester
@ Outdoor Unit metallic part | ;
* 0639_X_S Fig. 6
Measure the resistance by placing a probe on the
terminal plate in the same manner as explained
above (>). (Fig. 6)
@ Measurement of Insulation Resistance for
Electrical parts
- Disconnect the connector of the desired electric
part from terminal plate, P.C.B. Ass'y, etc. (Fig. 7) Clip [ \ /
«Similarly, disconnect the lead wires from Copper —
compressor, capacitor, etc. (Fig. 8 tube or
Р Р (Fig ) metallic part O AUD O
- Measure the resistance in the same manner as
illustrated on the right. .
Insulation
Refer to Electrical Wiring Diagram. tester 0600 X 5 Fig. 7
From fan motor,
compressor and other
parts.
If the probe does not enter the hole because the
hole is too narrow, use a probe with a thinner pin.
part
Metallic Probe / ( }
Clip J XX
— J o| 10
Insulation
tester вх я Fi g. 8
SM830060
— 44 —
att ta dE EE
;
cu
(2) Checking the Protective Devices
- Disconnect the connector, which consists of P (plug) and S (socket) when you want to
check the protective device.
* Then check continuity among plug’s (and/or socket’s) terminal as in Fig. 9.
- Normality of the protective device can be judged by the following table.
The Protective Device is proved normal if there is a continuity between terminals.
socket
; Multimeter
Fig. 9
0642_X_S
M Indoor fan motor thermal protector (49Fl) ...... Indoor unit
+ Disconnect the connector which leads to the indoor fan motor (FMI).
« Check the socket’s terminals.
@ Compressor motor thermal protector ...... Outdoor unit
+ Disconnect the wires from terminals of compressor.
* Check the terminals of compressor.
@ Outdoor fan motor thermal protector (49FO) ...... Outdoor unit
+ Disconnect both the connector which leads to the outdoor fan motor (FMO).
- * Check sockets terminal.
SM830060
— 45 —
Checking the Electrical Parts
Power transformer (TR1) ............ ..... Indoor unit *Measure the coil resistance.
- Primary 230-208 V ; Measure the resistance between two WHT lead wire
terminals of socket connected to power transformer.
+ Secondary 10.6 V ; Measure the resistance between two BRN lead wires.
Refer to “1-3—(A) Other component specifications”.
Indoor fan motor (FMI) ............ ... Indoor unit *Measure the coil resistance.
« Measure the resistance between each terminal of the socket connected to the
indoor fan motor.
Refer to “1-2—(A) Major component specifications”.
Outdoor fan motor (FMO) ........... Outdoor unit “Measure the coil resistance.
. Measure the resistance in the same manner as explained above (>).
Refer to “1—-2—(B) Major component specifications”.
Motor capacitor ............ Both in indoor and outdoor unit
+ Remove the lead wires from the capacitor terminals, and then place a probe on the
capacitor terminals as shown in Fig. 10. Observe the deflection of the pointer,
setting the resistance measuring range of the multimeter to the maximum value.
° The capacitor is “good” if the pointer bounces to a great extent and then gradually
returns to its original position.
The range of deflection and the deflection
time differ according to the capacity of the
capacitor. Multimeter
-
<. -
-
»~
rr
rr —]————]»;—
Compressor motor
capacitor
Fan motor
capacitor
104! X 5
Fig. 10
SM830060
— 46 —
© Continuity of fuse on P.C.B. Ass’y
« Check for continuity using a multimeter as
shown in Fig. 11.
Method Used to Replace Fuse on PCB Ass’y
1. Remove the PCB Ass'y from the electrical compo-
nent box.
2. Remove the fuse from PCB Ass'y using pliers while
heating the soldered leads on the back side of the
PCB Ass'y with a soldering iron (30W or 60W).
(Fig. 12)
3. For replacement, insert a fuse of the same rating to
the intended position and solder it.
(Allow time to radiate heat during soldering so that
the fuse does not melt.)
When replacing the fuse, be
CAUTION sure not to break down the
varistor.
(4) Thermistor Characteristic Curve
M Room temp. sensor
(KTEC - 35)
Resistance (kQ)
o
N © > a dd = O ©
==
50 59 68 77 86 95 104
——
Temperature (°F)
1044 MI
Resistance (kQ)
40
35
30
25
20
15
10
Fuse
1042 X 5
Fig. 11
Soldering iron
Varistor
1043 X S
Fig. 12
M Coil sensor
(PBC-41E)
\
№
Ny
NG
—
— AT —
5
14 23 32 41 50 59 68
—
Temperature (°F)
1045 M |
SM830060
SANYO FISHER Service Company
CENTRAL REGION
1739 Sands Place, Suite G
Marietta, GA 30067
Phone: (770) 951-8284
Fax: (770) 951-2077
Apr. / '98 Printed in U.S.A.
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