Ballu BSZ-30H User manual

WALL MOUNTED SPLIT-TYPE AIR CONDITIONERS
CONTENTS
1. IMPORTANT NOTICE ···································2
2. TECHNICAL SPECIFICATION ·····················3
3. OPERATION DETAILS ·······························4
4. WIRING DIAGRAM ············· 12
5. EXPLOSION VIEW ····························13
6. PARTS LIST ·············15
Models
BSZ-30H
OB207t-1qxp 25/9/97 8:51 PM Page 1
SERVICE MANUAL
No.TE100115

IMPORTANT NOTICE
This service manual is intended for use by individuals possessing adequate
backgrounds of electrical, electronic and mechanical experience. Any
attempt to repair the appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
The information, specifications and parameter are subject to change due to
technical modification or improvement without any prior notice. The
accurate specifications are presented on the nameplate label.
How to order spare parts
To have your order filled promptly and correctly, please furnish the
following information:
1. Model No. with Indoor or Outdoor
2. No. in the Explosion View
3. Part Name
4. The quantity you ordered
TCL Air Conditioner Service ManualTCL Air Conditioner Service ManualTCL Air Conditioner Service Manual
Air Conditioner Service Manual
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Technical Specifications
Model No. BSZ-30H
Type Heat Pump
Control type Remote
Rated cooling capacity Btu/h 30000
Rated heating capacity Btu/h 32000
EER for cooling Btu/h.w 8.6
COP for heating W/W 2.84
Moisture removal Liters/h 2.5
High dB(A) 52
Med. dB(A) 48
Indoor noise level at
cooling Low dB(A) 45
Outdoor noise level dB(A) 62
Electrical Data
Power supply 220V~/50Hz
Voltage Range V
Cooling A 16.0
Rated current Heating A 15.0
Cooling W 3500
Rated input Heating W 3300
Refrigerating System
Refrigerant/Charge Gram R22/2050g
Type Rotary
Model ----
LRA A ----
Compressor
MFG ----
Evaporator Louver fin and grooved tube type (
ϕ
7)
Condenser Corrugated fin and grooved tube type (
ϕ
9.52)
Expansion device Capillary tube
Defrosting system Microcomputor controlled reverse system
Fan System
Indoor air circulation/Hi Cooling m3/h 1200/1200
Indoor fan type Cross flow
Cooling rpm 1300/1150/1000
Heating rpm 1300/1150/1001
Dry rpm 1000
Indoor fan speed
H/M/L
Sleep rpm 1000
Indoor fan motor output W 50
Outdoor air circulation m3/h
Outdoor fan type Propeller fan
Outdoor fan speed rpm 850
Outdoor fan motor output W 100
Connections
Refrigerant coupling Flare type
Gas Inches 3/8
Connecting Pipe Liquid Inches 5/8
Connecting Wiring Size x Core number
Drainage Pipe O.D 16mm
Others
Suitable area m250~70
Indoor mm 1240x325x250Net dimensions
(W x H x D) Outdoor mm 902x650x307
Indoor kg 18
Net weight Outdoor kg 60
Indoor mm 1317×422×338Packing dimensions
(W x H x D) Outdoor mm 1027x705x433
Indoor kg 23
Gross weight Outdoor kg 66
Loading Capacity 40’/40’HC 111/135

4
Note: Each mode and relevant function will be further specified in following pages.
SLEEP FAN
TIMER SWING
ON/OFF
MODE
MID
SWING
AUTO
DRY
FAN
HEAT
COOL
FEEL
SLEEP
TIMER ON
HIGH
LOW
TMIER OFF
The remote controller transmits signals to the system.
Remote controller
1
2
4
3
5
6
7
8
8
4
MODE button
FAN SPEED control button
UP button (TOO COOL button)
DOWN button (TOO WARM button)
ON/OFF button
SLEEP button
VANE control button
TIMER button
Used to select the type of operation mode: Feel,
Cooling, Dry, Fan and Heating(Only for Heat Pump).
Used to select the indoor fan motor speed:
Auto, High, Mid and Low.
Used to increase the set room temperature
and time.
Used to decrease the set room temperature
and time.
Used to set or cancel sleep mode operation.
Used to start and stop operation
when pressed.
Used to adjust airflow direction.
Used to select TIMER operation.
Remote controller
6
2
5
3
7
1
11
Air Conditioner Service Manual
Operation Details
Remote Control
The remote controller is not presetted as Cooling Only Air Conditioner or Heat Pump by manufacturer.
Each time after the remote controller replace batteries or is energized, the arrowhead will flashes on the front of
Heat or Cool on LCD of the remote controller.
User can preset the remote controller type depending on the air conditioner type you have purchased as
follows:
Press any button when the arrowhead flashes on the front of Cool , Cooling Only is set.
Press any button when the arrowhead flashes on the front of Heat , Heat Pump is set.
If you don t press any button within 10 seconds, the remote controller is preset as Heat Pump automatically.
Note :
If the air conditioner you purchased is a Cooling Only one, but you preset the remote controller as Heat Pump, it
doesn t bring any matter. But if the air conditioner you purchased is a Heat Pump one, and you preset the
remote controller as Cooling Only, then you CAN NOT preset the Heating operation with the remote controller.

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Electronic controller:
1.Automatic mode
1) Initial RT determines the working mode and ST,the mode is determined effective only once unless
A/C shut-down then re-started. If from other modes switches to autoamatic mode (including mode
conversion after shutdown), it should be that the compress stop more than 3 min then temperature
judgement and automatic mode are conducted (it can conduct immediately from fan mode switched
to automatic, the indoor fan stops, three minutes later the response is made and start up). Within 3
min, the output as: Showing the room temperature, indoor fans starts (or anti-cold airflow), the
outdoor fan stops;
2) With memory controller, once being turned off or in case of an accidently power cut, the A/C is able
to retain and restore the original mode when being turned on or the power supply is resumed, if the
auto restart function activated. power-down after power-on; while if the auto restart fundction isn’t
activated, the A/C enters standby state.
Heat pump
Mode Initial RT Initial ST
Cooling RT≥26℃23℃
Dehumifying 26℃＞RT≥20℃18℃
Heating RT＜20℃23℃
Cooling-only
Mode Initial RT Initial ST
Cooling RT≥26℃23℃
Dehumifying 26℃＞RT≥20℃18℃
Ventilating RT＜20℃－
Under automatic mode (including from automatic converted into dehumidifying Dry mode), when the
temperature up and down signals from the remote controller is received, the setting temperature ST
adjusts correspondingly to the current room temperature plus or minus 1℃, the automatic regulating
temperature range is ± 2℃.
2．Cooling mode
1) The control of the compressor
a. When RT－ST≥1℃，the compressor is running.
b. When RT－ST＜－1℃，the compressor is off.
c. When －1℃≤RT－ST＜1℃, the compressor keeps its original state.
2) Outdoor fan motor and the compressor run simultaneously (except for defrosting).
3) The control of indoor fan motor:
a. Indoor fan motor can operate by automatic, low, middle, and high airflow speed circularly.
b. Indoor fan motor’s the automatic airflow speed control Indoor fan motor can operate by automatic，
as shown in Figure 1:
Hi
Mid
Lo
RT－ST 1℃2℃4℃
Figure 1 Cooling automatic airflow
When the temperature changes lead to changes in airflow speed, the switch can only be made
orderly, and every grade of air flow speed runs 1 minute at least.

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3, Dry mode
running into this mode, the Air cond. firstly operates for 3 minutes according to cooling mode (set
temperature is 7℃) , and then takes the detected backflow air temperature minus 2℃as a new set
temperature (the minimum value of 5℃) and runs according to cooling mode, indoor fan operates at
low-speed, at this moment the setting operation of Fan speed is invalid but Swing is adjustable.
4. Heating mode
On the Heating mode, the room temperature is repaired. After repaired, the room temperature
display on the LED CRT=RT-3℃.
1) The control of the compressor
a. When ST－CRT≥1℃，the compressor is running.
b. When ST－CRT＜-1℃，the compressor is off.
c. When -1℃≤ST－CRT＜1℃, the compressor keeps its original state
2) Outdoor fan motor and the compressor run simultaneously (except for defrosting)
3) The control of indoor fan motor:
a. Indoor fan motor can operate by automatic, low, middle, and high airflow speed circularly.
b. indoor fan motor’s the automatic airflow speed control Indoor fan motor can operate by automatic，
as shown in Figure 2:
Hi
Mid
Lo
ST－CRT 1℃2℃4℃
Figure 2 Heating automatic airflow
When the temperature changes lead to changes in airflow speed, the switch can only be made
orderly, and every grade of air flow speed runs 1 minute at least.
4) Vane motor control: run as set state.
5) 4-way valve control:
a. Under heating mode, the four-way valve maintains well-connected status (including the
compressor stops on set condition, but except for the defrosting process)
b. When the mode switches into the heating mode or start-up, four-way valves will open 5 Seconds
before the compressor starts; while the mode exits from the heating mode or turn off, the four-way
valve will close 2min after after the shut-down the compressor.
6) Defrosting function:
During defrosting, once mode switch, temperature setting signals received, and the buzzer and
display make response immediately, but the other operations won’t implemented until defrosting
finished;
During defrosting, the signals of on-off, timing, sleep, airflow speed ans swing will be responded, but
the airflow speed and swing should be in accordance with anti-cold air rules.
Except the above signal processing during defrosting, no other signals will be dealt with, but only a
loud buzz.
During defrosting, electrical heating stops compulsively.
Defrosting enter and exit pragram:
Option 1：with jumper JC
The condition of enter defrosting: run into defrosting once any of condition 1, 2, and 3 met.

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Condition 1：As shown in figure 3
Defination:
The followings are all required to meet:
a. IPT1 settles for IPT1＝IPTmax－△IPT（8℃）
b. t5≥50min（running time t5≥50min（the compressor runs cumulatively），t5 is removable，and could
be less than t1）
c. IPT＜40℃，and lasts 2min。
Running into defrosting on condition 1, the first running time of set defrosting is F (8min); after running
a defrosting cycle, the defrosting time should be determined and adjusted.
Figure 3
Condition 2: When running time is more than or equal to 120 min (compressor is running
accumulatively), the indoor temperature is less than 35 ° C for 2 min sustained. Running into
defrosting under condition 2, defrosting time set is 8 min.
Condition 3: after the compressor is operating for 20min continuously, the indoor temperature is less
than 23 ° C which is anti-cold wind temperature when the fan stops running(including temperature
droping when compressor operating, not including the compressor’s starting course), and the
machine runs into defrosting according to any one condiciton as below) Running into defrosting under
condition 3, defrosting time set is 10 min.
a) Running into the first defrosting in 20 min after start-up.
b) The interval from last defrosting equivalent to or more than 50 min (stopping the compressor or the
machine in standby is allowed in the meantime).
Option 2: No Jumper JC, and no OPT outdoor sensor
when the compressor runs for 45 min, if the indoor coil temperature is less than 40 ° C for 2 min, the
machine runs into defrosting, and lasts for 3min, otherwise when the compressor runs for 120 min,
the machine runs into defrosting automatically and last for 10 min.
Option 3: No jumper JC, but with OPT outdoor sensor
When heating, when the temperature of outdoor unit under heat-exchange is lower than E ° C (-4 ° C),
and the compressor runs for 45 min, then the machine runs into defrosting and last for 10 min.
Option 4. When heating, when the outdoor fan motor stopped but the compressor not stopped

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accumulative total 30min, then the machine runs into defrosting and last for 8 min. if the accumulative
total less than 30min, but accord with one of the condition option 1-3 them the machine runs into
defrosting at the option 1-3 and the accumulative tota time restarts from 0.
Conditions for quitting defrostng
(1) The quitting conditions for option 1 and option 2, the machine quits from defrosting if any one
below condition met.
a. Defrosring time is over.
b.When it runs in defrosting for three minutes, the IPT indoor coil temperature rises 15 ° C or above
from the bottom point.
(2) The quitting conditions for option 3.
When OPT ≥20 ° C or defrosting for more than 10 min, then quit from defrosting.
(3) Defrosting process shown in Figure 4
Figure 4 Defrosting process
7) Auxiliary Electric heating function
(1)The default condition is automatic on/off the electric heating function.
(2) The conditions of auxiliary electric heating(all the following conditions must be met)
a. the compressor runs for more than 3min；
b. indoor fan runs normally；
c. not in defrosting state;
d. auxiliary electric heating is turned off for more than 30s。
e. ST-RT≥3°C;
f. RT﹤22°C;
g. IPT≤43°C;
(3) The conditions of stopping auxiliary electric heating(any one of the following conditions met, the
state stops)
a. the compressor stops
b. RT≥24°C;
c. IPT≥48°C
d. indoor fan stops。
e. running into sleeping function
5. Fan mode
1) Indoor fan motor control:

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indoor fan motor is running at setting speed (the speed is same as that of heating).
2) Vane motor control: running according to the setting.
3) The outdoor unit is not working under fan mode.
6. Sleeping mode
1) Under sleep mode, the indoor fan motor is running at a low-airflow speed，except that the power
light and sleep light are on, timer light is on/off according to the setting state, running light is off. LED
is off after displaying 5min.
2) Temperature control:
(1) From cool mode to sleep mode, one hour later, the operates Temp.=ST＋1，another one hour
later, the operates Temp.=ST＋2，after then unchanged.
(2) From heating mode to sleep mode, one hour later, the operates Temp.= ST-1，another one hour
later, the operates Temp.=ST-2，after then unchanged.
3) the machine will automatically shut up after running 8 hours under sleep mode.
Timer on start-up and sleep mode are implemented at the same time, and the sleep mode can not be
functioned.
7. Timing fuction
The timing scale is between 10min to 24h, when the time fixed is less than “10” hours, the displayed
time is shown by 0.5 hour as the unit, when the time fixed is more than or equal to “10” hours, the
displayed time is shown by 1 hour as the unit.
8. Emergency switch（ON/OFF）
1) When stand-by, to operate by pressing the emergency switch as follows:
To Press the emergency switch in three seconds, the buzzer rings once, and to release, the machine
runs into cooling mode; if to holding on, the buzzer rings twince, then the machine runs into heating
mode, while when the machine is on, to press the emergency Switch, the buzzer rings once and then
the machine shut down.
2) The machine is running mandatorily as the selected mode within 30min after emergency operation,
indoor fan motor is running in high-speed, and vane board is swinging. The machine runs into
automatic mode 30min later, the selected mode unchanged, the set temperature is 23° C ,the rotate
speed of indoor fan motor is automatic, and vane board is swinging too.
3) To press the emergency button when the machine operating, then the machine runs into stand-by
state.
4) Under emergency operation，the Compressor’s time-lapse protection, anti-frosting protection in
cooling, Overheating protection in heating and sensor fault protection and defrost operate are
effective.
5) Under emergency operation, once effective signal from remote controller is received, then the
machine exits form the emergency mode, and operate according to the setting from remote controller.
9. Auto-restart function
1) The PCB retains the setting parameters in case of power off. When the power supply is resumed,
the machine, which has been started up the power-off memory function, is able to restore into the
original running state automatically.
2) To press the emergency button and power on, and hold on 10 seconds, exit from the power-off
memory function, buzzer rings four tomes.(default: no this function)
10. Protection/ Troubleshooting functions

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1) Compressor’s protection function:
a．The PCB which has Power-off memory function, once this function is started up,the compressor
goes along 3min delay protection when power on. If the PCB hasn’t been started up this function,
even when the PCB is power-on, the compressor doesn’t process 3 min delay function.
b．Compressor’s 3 min interval protection: the compressor can’t start-up until 3 min later(except for
defrosting process).
c．After the compressor started, the compressor’s state isn’t subject to the changes on ST,RT in 3min.
2) Anti-frosting protection of indoor evaporator:
If IPT ≤0 ℃detected in consecutive 5 min, compressor and outdoor motor stoped, indoor fan motor
runs at high-speed forcibly; IPT ≥5 ℃detected 3min later, then outdoor fan is activated. And the
compressor, indoor fan motor restores the original state.
3) Overheating protection:
IPT ≥55℃, the outdoor fan stops, IPT ≥65℃, the compressor stops, indoor fan motor runs at
high-speed forcibly. When IPT ≤48℃, outdoor fan motor and the compressor open, indoor fan motor
restores the original state.
4) Anti-cold wind control in heating:
a. When runing into the heating mode, once the compressor fails to comply with the start-up
conditions, the wind speed is regulated according to the coil temperature in 2 min(including stopping
the indoor fan motor), 2 min later the indoor fan motor stops.If the compressor starts up within 2 min,
then operating by Figure 5.
Under heating process, to close the compressor (including the downtime protection ), the wind speed
is regulated according to the coil temperature in 1min(including stopping the indoor fan), 1min later
the fan is stoped forcibly.
b. When the indoor fan motor running at a low-speed wind and in anti-cold wind operation, once
electric heating opens,the vane immediately withdraws from the anti-cold windy location and turn
back to normal vane angle. When electric heating closes, indoor fan motor go on to run at low-speed
wind, accordingly, the vane turns to anti-cold windy location.
Figure 5 Anti-cold Wind
2) The following table shows the fault protections. When failures happens, the PCB alarms and
buzzer rings three times. Failure code appears, and the PCB operates protection procedures.

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Failure code: For the machine has LED, the code displays on LED, for no LED machine, the code
reflects by the running light.
Failure Running Light Flash LED Display
RT Sensor Failure Once / Period E1
IPT Sensor Failure Twice / Period E2
Indoor Fan Motor Failure 6 times / Period E6
When there is LED displaying failure code, the code is displayed statically, if there are several failure
codes should be reported at the same time, then failure codes appears one by one every eight
seconds correspondingly.
a. Sensor’s failure protection: when the sensor’s temperature is out of the range -50 ≤T ≤110 ℃,
then sensor failue is determined. Once RT, IPT sensor failures appear, the compressor stops and
indoor and outdoor fan motors shut off. Remote controller deesn’t response to any signal except for
shutdown. During failure the machine can run in fan mode. After the failure is settled, the PCB
restores to standby status.
b. Failure protection of Indoor PG fan motor:If there is no feedback signal of rotate speed within 5, the
indoor fan motor stops,at the same time, the compressor, outdoor fan moto, four-way valve and
auxiliary electric heater etc cut downn. 10 seconds later, the indoor fan motor restarts, once there is
no feedback signal of rotate speed within 5 seconds either, then the machine stops and goes into
indoor fan motor failure protection, buzzer rings three times, and running light flashes at 6 times per 8
seceonds. When the failure is confirmed, once there is feedback signal,the failue is relieved
automatic.

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WIRING DIAGRAM
MODEL:BSZ-30H
INDOOR UNIT:
OUTDOOR UNIT

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EXPLOSION VIEW
MODEL: BSZ-30H
INDOOR UNIT:
8
13
11
12
10
9
6
7
5
4
3
1
2
17
14
15
16
18
20
1
26
25
23
21
22
24
27

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EXPLOSION VIEW
MODEL: BSZ-30H
OUTDOOR UNIT:
10 11
8
9
6
754
20
14
12 13 15 16 17 18
19
32
21
22
24
23
25
26
1
27
29
28

Part List
No. Part No. Part Name Q’ty Remark
1 1080030017 Installation Plate 1
2 1070850172 Base 1
3 1070020021 Cross Fan 1
4 1070100014 Bearing Mount 1
5 1210850109 Evaporator 1
6 1070850411 Water Drainage Assembly 1
7 1070850274 Face Frame 1
8 1070850130 Screw Cover 3
9 1093090102 Display PCB 1
10 1070850145 Display PCB Box 1
1070850209 Left Air Filter 1
1070850210 Right Air Filter 1
12 1070850314 Front Panel 1
13 1070850416 Display PCB Cover 1
14 1070850180 Up Vane 1
15 1070850181 Down Vane 1
16 1070110012 Drainage Hose 1
17 1070850140 Cable Clamp 1
18 1170020023 Vane Motor 2
19 1170200051 Terminal 1
20 1073030201 Sensor Holder 1
21 1090850121 Main PCB 1
22 1070850215 Indoor Motor Cover 1
23 1170030058 Indoor Motor 1
24 1070850218 Electrical Box 1
25 1173090107 Transformer 1
26 1170230001 Indoor Sensor Assembly 1
27 1090010072 Remote Controller 1
28 1070060003 Remote Controller Supporter 1
29 1190850101 Indoor Carton 1
30 1190070037 Base Foaming 1
31 1190070038 Upper Foaming 1
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Indoor Unit- BSZ-30H
Not shown in Explosion
view
11

No. Part No. Part Name Q’ty Remark
1 1081990041 Grille 1 Optional
2 1081990038 Top Cover 1
3 1110060608 Condenser 1
4 1081990042 Outdoor Motor Supporter 1
5 1170040102 Outdoor Motor 1
6 1070030025 Propeller Fan 1
7 1081990040 Left Grille Supporter 1
8 1081990045 Left Grille 1
9 1081990047 Front Plate 1
10 1081990048 Fan Guad 1
11 1100060117 Compressor And It Accessories 1
12 1120110001 4-way Valve 1
13 1120850236 4-way Valve Assembly 1
14 1081990252 Base 1
15 1081990039 Right Plate 1
16 1120120011 Two-way Valve 1
17 1081990041 Valve Supporter 1
18 1120130013 Three-way Valve 1
19 1073551103 Electrical Box Cover 1
20 1074060118 Cable Clamp 1
21 1170200054 Terminal 1
22 1170100030 Fan Motor Capacitor 1
23 1170100007 Compressor Capacitor 1
24 1080010004 Capacitor Strip 1
25 1084561802 Electrical Parts Box 1
26 1174561801 AC Contactor 1
27 1090850103 Soft Start PCB 1
28 1120850235 Capillary Assembly 1
29 1081990050 Partition plate 1
30 1174561802 Outdoor Sensor 1
31 1190070290 Cabinet Carton 1
32 1190070052 Upper Carton 1
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Not show in the explosion
Outdoor Unit- BSZ-30H
Part List