Airrex HSC-12L User manual

▶It is ESSENTIAL that you read ‘NOTES ON SAFETY’ carefully
before use and follow them at all times.
▶This AIR CONDITIONER is specified for use on the rated
voltage power supply. For use outside the local electricity
supply should be checked by a qualified electrician.
▶We have a policy of continual improving on our products.
The contents (features and specifications) in this manual are
therefore subject to change without notice.
▶The Warranty form is on Page 20. Please complete it now and
keep it in a safe place.
▶Keep this manual on hand for reference.
▶ Thank you for purchasing the AIR CONDITIONER.
Before operation please read this user’s manual carefully.
HSC-12L/HSC(O)-14
HSC(O)-18/HSC(O)-24A
MODEL:
USER'S MANUAL
AIR CONDITIONER
HSC-12L HSC-14/18/24A HSCO-14/18/24A
NOZZLE TYPELOUVER TYPE
C

2rev0
■ SAFETY INSTRUCTIONS
■ GENERAL ADVICE BEFORE USE
■ EXTERIOR DESCRIPTION
■ SPECIFICATIONS
■ CONTROL PANEL FUNCTIONS
■ MODE CHANGING METHOD
■ HOW TO SET THE 'OFF'TIMER
■ TEMPERATURE CONTROL OPERATION
■
SELECTION OF LOCK OR UNLOCK
■ 'ERROR'and WARNING INDICATORS
■ FIREALARM&ERROR SIGNAL CONNECTION
■ TROUBLE SHOOTING
■ MAINTENANCE
■ ACCESSORY
■ WARRANTY
TABLE OF CONTENTS
3
4
5~6
7
8~9
10
11
12
13
14~15
16
17
18
19
20

3
rev0
SAFETY INSTRUCTIONS
The following instructions are to ensure user’s safety and to prevent any physical injury or
material damage. Please read carefully and follow all instructions.
There are two sections to these instructions: WARNING and CAUTION.
WARNING
The following symbols are for your guidance:
= You must NOT. = You MUST.
Keep this manual in a visible location near the Heat pump for easy reference.
Use a circuit breaker for the capacity.
(It may cause fire and electric shock)
Do not use a damaged power cable.
(Short, fire or shock hazard)
Before cleaning, disconnect the unit.
(Otherwise risk of electric shock)
Do not place anything on top of the machine.
(This could cause electric shock, malfunction or injury)
Do not use an extension cable.
(Risk of fire and / or electric shock)
Do not ‘kink’ or sharply bend the power cable nor put any weight on it.
(The insulation may be damaged causing fire and/ or electric shock)
Always turn off control panel first and turn off with circuit breaker.
(Risk of electric shock and / or malfunction)
Do not use this AIR CONDITIONER on unstable or inclined surfaces. Always use
on solid flat floor. (Risk of falling causing injury, fire or malfunction)

4rev0
SAFETY INSTRUCTIONS
GENERAL ADVICE BEFORE USE
CAUTION
Do not place AIR CONDITIONER on uneven, unstable or inclined surface.
(This could cause malfunction)
When storing the AIR CONDITIONER, keep it in a dry, cool place.
(To prevent corrosion and malfunction)
If not being used for some time or if lightening is present, always disconnect from power.
(To prevent risk of electric shock, short circuit or fire)
Do not spray water onto the AIR CONDITIONER nor use solvents
such as benzene, thinner or alcohol for cleaning.
(There is a risk of electric shock and / or short circuit)
Designed for indoor usage.
Waste electrical and electronic products must be disposed separately from normal household waste.
When you dispose of such products, please recycle where facilities exist. Follow the guidance of
your local authority and/or ask the shop where you purchased the product.
* You have to connect supply cord at least standard
If the supply cable is damaged, it must be replaced by the manufacturer,
its service agent or similarly qualified person in order to avoid a hazard.
· Ensure the safety of the location in which Air conditioner is to be used.
· Ensure the floor or ground is smooth and sound.
· Ensure you allow at least 20" (50cm) air space all around the AIR CONDITIONER.
· When in position LOCK the casters to prevent rolling.
FOR MAXIMUM EFFICIENCY
· Exhaust ducting should be no longer than maximum efficiency.
· Ensure correct electricity supply.
Waste electrical and electronic products must be disposed separately from normal household waste.
When you dispose of such products, please recycle where facilities exist. Follow the guidance of
your local authority and/or ask the shop where you purchased the product.

5
rev0
※ HSC-12L
FLEXIBLE DUCT OUTLET (COLD AIR)
LOUVER OUTLET (COLD AIR)
DIGITAL CONTROLLER
EVAPORATOR FILTER
(INSIDE)
CASTERS (FRONT LOCKABLE)
CONDENSED WATER TANK
TO COLLECT WATER
GENERATED
DURING COOLING.
POWER PLUG
ELECTRIC PANEL
(ACCESS BY AUTHORISED SERVICE
PERSONNEL ONLY)
CONDENSER OUTLET (HOT AIR)
CONDENSER FILTER
EXTERIOR DESCRIPTION
FRONT VIEW
BACK&SIDE VIEW

6rev0
EXTERIOR DESCRIPTION
FRONT VIEW
BACK&SIDE VIEW
①
①
①
①
②
②
②
②
④
④
④
④
⑤
⑤⑤
⑤
⑥⑥
⑦⑦
③
③
③
③
① Cool Air Ooulet
② Handle
③ Digital Controller
④ Electrical Access panel
⑤ Power Plug
⑥ Fire Alarm Connection Port
⑦ Casters (Front Lockable)
① Top Fan/Wiregrille
② Evaporator Filter Ambient Air Intake
③ Condenser Filter
④ Water Level Indicator to Check
water Level of the Condensate Tank
⑤ Condensed Water Tank to collect
water generated during cooling
※ HSC(O)-14 & HSC(O)-18 & HSC(O)-24A

7
rev0
SPECIFICATIONS
MODEL HSC-12L HSC-14
HSCO-14
HSC-18
HSCO-18
HSC-24A
HSCO-24A
Cooling capacity Btu/h
(kW)
12,000
(3.5)
13,600
(4.0)
16,800
(4.9)
23,500
(6.9)
Power Supply - 115Vac 60Hz 1Ph 220Vac 60Hz 1Ph
Dimensions
(WxDxH) inch 16.5x24.4x40.3 19.3x23.6x46.8 19.3x23.6x49.8 19.3x23.6x51.3
Weight lb 127 176 185 210
Power
Consumption kW 1.34 1.5 1.95 2.74
Current
Consumption A12 13 17 12.6
Moisture
Removal
MAX gal/day 11.4 13.3 19 22.8
AHAM gal/day 7.6 8.9 13.3 15.9
Refrigerant
(R-410A) lb 1.54 1.33 1.76 2.97
Operating
Range
Cooling
72˚F DB60%RH~
104˚FDB40%RH
72˚F DB60%RH~113˚F DB40%RH
Dehumidifier 59˚F DB 60%RH~113˚F DB 40%RH
Nema Plug LCDI 5-15 LCDI 5-20 LCDI 6-20

8rev0
CONTROL PANEL FUNCTIONS
⑧
⑨
① Power : Use to power On / Off.
② ∨ ∧: Raises or lowers setting temperature and/ or sleep (off) time.
③ Mode : Use to select cooling mode or Dehumidifier mode or FAN mode.
④ Fan Speed : Controls fan low/high speed.
⑤ Off Timer : To set the length of operating time, once turned on, that you wish the
cooler to run for. You can set 0~24 hours. Time intervals are
30mins. up to 10 hours and then 1 hour between 10 and 24 hours.
⑥ Room : If the LED is On, the displayed temperature is for Room temp.
If the LED is Off, the displayed temperature is for spot temp.
⑦ Comp. : When the compressor is operating, the LED is On.
⑧ Error : Error signal
( E2 : Low Pressure, E3 : Sensor, E5 : BLDC Motor, AF: Eva Freezing)
⑨ Check : If Water full or Align Drain Tank is checking. The LED is on.
⑩ Display : Display Room/Spot temperature, the setting temp and off time
in case of setting them.
(Display of 'LO' : under the 32℉, Display of 'HI' : over the 99℉)
⑪ ℃,℉ : When the user change temperature unit ℃↔℉, ℃ or ℉ will be turn on.
⑫ hr : When the user set the off timer, ‘hr’ will be turned on.
①②
③
④
⑤
⑧
⑦
⑥
⑨
⑪
⑫
⑩
※ HSC-12L

9
rev0
CONTROL PANEL FUNCTIONS
① Power : Use to power on / off.
② ∨ ∧ Button : Raises or lowers temperature and/ or sleep (off) time.
③ Mode : Use to select cooling mode or Dehumidifier mode or FAN mode
④ Low Mode : Controls fan low speed.
⑤ High Mode : Cantrol fan high speed.
⑥ Off Timer : To set the length of time, once turned on, that you wish the cooler to run for.
You can set 0~24 hours. Time intervals are 30mins.up to 10 hours and then 1 hour between
10 and 24 hours.
⑦ Room : If the LED is on, the displayed temperature is for room temp.
⑧ Comp. : When the compressor is operating. the LED is on.
⑨ Error : Error signal (E1:High pressure,E2:Low pressure,E3:Sensor problem,rP:Reverse phase)
⑩ Check : If water full or Aligh Drain Tank is checking. The LED is on.
⑪ Display : Display Room temperature, and also the setting temp and sleep time if they had been set.
(Display of 'LO' : under the 32˚F, Display of 'HI' : over the 99˚F)
⑧
⑨
①
②
③
④
⑤
⑧
⑦
⑥
⑨
⑪
⑩
※ HSC(O)-14 & HSC(O)-18 & HSC(O)-24A

10 rev0
MODE CHANGING METHOD
CO
OL
HU
FA
COOLING MODE
If you press 'cool' button. 'COOL' is displayed.
then LED is on.
DEHUMIDIFIER MODE
When the cooling is operating, If you press
the 'cool' button. 'dEHU' is displayed.
then LED is on.
FAN MODE
When the Dehumidifier is operating. If you press
the 'cool' button, 'FAn' is displayed.
then LED is off.

11
rev0
HOW TO SET THE ‘OFF’ TIMER.
This function enables you to set the length of time you want the AIR CONDITIONER to operate.
You can set the time period from 30min. to 24 hours in 30min. and 1 hour increments.
AFTER 1hr
73
79
1. When AIR CONDITIONER is operating, press the
'Off Timer'button and set the length of time you want by
pressing ∧or ∨. Each time you press the button
you will increase the 'time to off'period by 30mins.
up to 10 hours, and 1 hour up to 24 hours.
The display will show .5 for 30min and 1 for an hour.
e.g. One and a half hours will show 1.5.
2. When you have finished setting the time period, the
'Off Timer'lamp will be on which indicates
the AIR CONDITIONER is in sleep (Off Timer) mode.
3. If you press the 'Off Timer'button during its
operation, the remaining time will be shown.
4. To CANCEL timing, press and hold 'Off Timer'button
for ONE second. It will then switch the timer off
automatically.
OFF TIMER LAMP IS ON

12 rev0
Cooling operates when Room/Spot temperature is
higher than set temperature.
Cooling stops when Room/Spot temperature is
lower than set temperature.
Mode Display range Setting range
Room Temp 32℉~99℉ 64℉~86℉
Spot Temp 32℉~99℉ 32℉~86℉
1. When turn ON, the setting temperature is displayed.
3. The display showing the set temperature will
blink 3 times.
2. When you push either ▼ or ▲ button, the setting
temperature is changed.
79
TEMPERATURE CONTROL OPERATION
※ HSC-12L
※ HSC(O)-14 & HSC(O)-18 & HSC(O)-24A
Cooling operates when Room/Spot temperature is
more than set temperature.
Cooling stops when Room/Spot temperature is
less than set temperature.
Mode Display range Setting range
Room Temp 32℉~99℉ 64℉~86℉
Spot Temp 32℉~99℉ 32℉~86℉
79
1. When turn ON, the setting temperature is displayed.
3. The display showing the set temperature will
blink 3 times.
2. When you push either ▼ or ▲ button, the setting
temperature is changed.

13
rev0
SELECTION OF LOCK OR UNLOCK
SELECTION OF ℉ OR ℃
79
79.
1. When turn OFF If press '∨' for 5 seconds,
you can control 'LOCK, UNLOCK' mode.
3. When You set 'LOCK' there will be '.'
below the nember in the screen.
2. You can set 'UNLOCK' or 'LOCK' after pressing
'∧' button.
UL
2679
1. If you want to change temperature unit ℉↔℃,
when Heat Pump is stopped, push ∨and ∧
button simultaneously for three seconds.

14 rev0
‘ERROR’and WARNING INDICATORS
The machine’s safety devices will automatically signal any problems via the display window on the control panel.
The information below shows how to read these signals.
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
E2
E3
E3
E2
E3
af
al
e5
E3
Error Code Problem Cause Corrective Action
Low pressure
AF sensor
RT sensor
OT sensor
If the AF sensor is short
circuited or cut 'E3&1'
displayed and the 'Error'
LED will be on.
If the RT sensor is short
circuited or cut 'E3&2'
displayed and the 'Error'
LED will be on.
If the OT sensor is short
circuited or cut 'E3&3'
displayed and the 'Error'
LED will be on.
Exchange temperature sensor
(Contact Airrex U.S.A. at 1-888-
535-8841)
Exchange temperature sensor
(Contact Airrex U.S.A. at 1-888-
535-8841)
Exchange temperature sensor
(Contact Airrex U.S.A. at 1-888-
535-8841)
Verify Electrical
Refrigerant may be low
Clean Filters and Coils
Verify Power (Voltage/Amps)
Check Filters Evaporator/Condenser
Check Evaporator/Condenser Coils
Check refrigerant level and/or
refrigerant leak.
Water full Water tank is full Empty the water tank
Align water
tank
BLDC MOTOR
Water tank is not
positioned correctly
If BLDC MOTOR is not
operated 'E5' displayed
and the 'Error' led will be
on.
Place the water tank
in right position
Check BLDC MOTOR
Anti-Freezing
alarm
Evaporator is below 25 ℉
(-4 ℃) due to being used in a
low ambient temperature area.
Do not use the unit in an ambient
temperature less than 72℉(22℃).
Check refrigerant level.
※ HSC-12L

15
rev0
‘ERROR’and WARNING INDICATORS
※ HSC(O)-14 & HSC(O)-18 & HSC(O)-24A
e2
e3
Error Code Problem Cause Corrective Action
Water full Condensate tank is full Empty the water tank
Align water
tank
Water tank is not
positioned correctly
Place the water tank
in right position
High pressure
Blocked air filter
Blocked / kinked exhaust duct
Ambient temperature is too
high
Ensure exhaust duct is not
blocked / kinked
Do not use the air conditioner if
ambient temperature is higher
than 113℉
Low pressure
Sensor
Problem
Temperature sensor has
an electric short.
Exchange temperature sensor
(Contact Airrex U.S.A. at 1-888-
535-8841)
Anti-Freezing
alarm
Evaporator is below 25 ℉
(-4 ℃) due to being used in a
low ambient temperature area.
Do not use the unit in an ambient
temperature less than 72℉(22℃).
Check refrigerant level.
al
Fire alarm signal Fire alarm signal is received
from Fire alarm system.
Reset unit by pushing and
holding the "OFF TIMER" button
for 5 seconds.
Verify Electrical
Refrigerant may be low
Clean Filters and Coils
Verify Power (Voltage/Amps)
Check Filters Evaporator/Condenser
Check Evaporator/Condenser Coils
Check refrigerant level and/or
refrigerant leak.

16 rev0
Fire Alarm & Error Signal Connection
Output Terminal ER1 and ER2
The air conditioner will output an Error signal (normal open dry
contact) when an "Error" has occurred, to show what the failure is
on the air conditioner.
Input Terminal FA1 and FA2
When the signal from the fire alarm system is received,
the air conditioner turns off and does not operate until
the unit has been RESET.
Connecting Error Signal with warning device
1. Remove 'Cap' and the 'Fire Alarm cover'.
2. Use recommended error signal wire size from 16 AWG to 26
AWG for a solid wire, or 16 AWG to 22 AWG for a stranded
wire with ring terminal for #5 stud size.
3. Connect the end of the error signal wire to ER1 and ER2,
and the other end to the compatible with varoius warning
devices such as alarm speaker, light indicators, and etc.
Connecting the fire alarm wire from fire alarm system
1. Remove 'Cap' and the 'Fire Alarm cover'.
2. Use recommended fire alarm wire size from 16 AWG to 26
AWG for a solid wire, or 16 AWG to 22 AWG for a stranded
wire with ring terminal for #5 stud size.
3. Connect fire alarm to terminal FA1 and FA2.
ERROR SIGNAL CONNECTION
FIRE ALARM SIGNAL CONNECTION

17
rev0
TROUBLE SHOOTING
TROUBLE CHECK REMEDY
NOT
WORKING
Power plug correctly connected Connect plug correctly
Power button "OFF" Press POWER button to "ON"
Fuse (supply) blown Exchange fuse in board
Breaker on switch board tripped Check load capacity and reset
Ambient temp. too high
(Cooling & Dehumidifier: over 113℉ or 104℉)
(HSC-12L)
Use only below Cooling & Dehumidifier 113℉
or 104℉ (HSC-12L)
POOR
COOLING
Filter blocked with dust Clean Filter
Dust in heat exchanger Clean heat exchanger
Obstacle against inlet side Remove and allow 20"(50cm). clearance
Ambient temp. too high
(Cooling & Dehumidifier: over 113℉ or 104℉
(HSC-12L))
Use only below Cooling & Dehumidifier 113℉
or 104℉ (HSC-12L)

18 rev0
MAINTENANCE
※ HSC-12L
※ HSC(O)-14 & HSC(O)-18 & HSC(O)-24A
1. To remove EVA filters, open the front grille ①
and pull the filter inside ②.
2. To remove COND filters, slide up a little ① and
pull towards you ②.
3. Clean the filters with water or compressed air.
4. Clean evaporator and condenser units with a
vacuum cleaner or compressed air.
1. After cleaning, completely dry
the inside of the unit by
operating on 'Fan Mode'
for 3 to 4 hours.
2. Turn "OFF"at control panel,
remove plug from socket. Coil
and store cable neatly.
3. Keep machine suitably covered to
prevent damage by damp,
humidity and dust.
CLEANING THE AIR FILTERS
MAINTENANCE
R
R
1. To remove filters, slide up a little ①and pull
towards you ②.
2. Clean the filters with water or compressed air.
3. Clean evaporator and condenser units with a
vacuum cleaner or compressed air.
1. After cleaning, completely dry
the inside of the unit by
operating on 'Fan Mode'
for 3 to 4 hours.
2. Turn "OFF"at control panel,
remove plug from socket. Coil
and store cable neatly.
3. Keep machine suitably covered to
prevent damage by damp,
humidity and dust.
CLEANING THE AIR FILTERS
MAINTENANCE

19
rev0
ACCESSORY
1. Insert a 'Grill Cover' by
screwing of 6 bolts.
2. Assemble a 'Nozzle kit'
by 4 bolts.
3. Completion.
※ HSC-12L
※ HSC(O)-14 & HSC(O)-18 & HSC(O)-24A

● Designs and specifications of products are subject to change without prior notice for the improvement of products.
WARRANTY
AIRREX HEAT PUMP give the more reliable performance, comfort and durability
the more they are used. They are built under a strict quality assurance regime
which includes inspection both during and after production and exhaustive
reliability testing.
In the unlikely event you have any problems, please contact your dealer or
distributor. If the problem is as a result of a production fault or failure, repairs will
be undertaken free of charge during the period of warranty subject to the
following warranty conditions:
1. If the problem has been caused by customer error or misuse, abuse or
damage, then all repairs will be charged for.
2. This warranty applies to your country.
3. Proof and date of purchase must be supplied.
4. Please complete the details below and keep this warranty in a safe place.
5. All transport charges back to the dealer are at customer's cost. Keep all
original packaging to facilitate return. Return to customer will be at dealer's cost
(if genuine warranty claim).
Name of Company
Telephone No.
DISTRIBUTOR
Name :
Address :
Telephone :
CUSTOMER DETAILS
(Applicable to first retail purchaser only)
WARRANTY PERIOD ( ) Months
DESCRIPTION AIRREX HEAT PUMP
MODEL HSC-12L,HSC(O)-14,HSC(O)-18,HSC(O)-24A
DATE OF PURCHASE
PRODUCT
SERIAL NO.
Manufactured by :
HEPHZIBAH CO.,LTD.
(Juan-dong) 86, Gilpa-ro
71beon-gil, Nam-gu,
Incheon, Korea
TEL : [phone]
FAX : [phone]
E-mail : [email protected]
Website : www.airrex.biz
Distributed by :
Airrex USA
1191 Jewell Dr Ste 101 Waco, TX 76712
TEL : [phone]
FAX : [phone]
E-mail : [email protected]
Website : www.airrexusa.com