Hephzibah AIRREX AHSC-42 User manual

▶It is ESSENTIAL that you read ‘NOTES ON SAFETY’ carefully
before use and follow them at all times.
▶This HEAT PUMP/AIR CONDITIONER+HEATER
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 HEAT PUMP/
AIR CONDITIONER+HEATER.
Before operation please read this user’s manual carefully.
AHSC-42/60 AHSC-140
AHSC-42 / 60 / 140MODEL:
USER'S MANUAL
AIRREX HEAT PUMP
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 & ℉ OR ℃
■ 'ERROR'and WARNING INDICATORS
■ TROUBLE SHOOTING
■ MAINTENANCE
■ ACCESSORIES
■ WARRANTY
TABLE OF CONTENTS
3
4
5~6
7
8
9
10
11
12
13
14
15
16~17
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 HEAT PUMP/AIR CONDITIONER+HEATER 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 HEAT PUMP/AIR CONDITIONER+HEATER on uneven, unstable or inclined
surface. (This could cause malfunction)
When storing the HEAT PUMP or AIR CONDITIONER+HEATER, 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 HEAT PUMP or AIR CONDITIONER+HEATER 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 HEAT PUMP/AIR CONDITIONER+HEATER 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 HEAT PUMP.
· 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
EXTERIOR DESCRIPTION
FRONT VIEW
BACK&SIDE VIEW
①
②
④
⑤⑥
③
① Condenser Outlet
② Air Outlet
③ Handle
④ Air Inlet
⑤ Casters
⑥ Condensate Water Outlet
①
②
③
④
① Digital Controller
② Condenser Inlet
③ Electric Panel
④ Power Connect
(Cabinet inside)
※ AHSC-42/60

6rev0
EXTERIOR DESCRIPTION
FRONT VIEW
BACK&SIDE VIEW
※ AHSC-140
FLEXIBLE DUCT OUTLET (COLD / HOTAIR)
HEATER INSIDE
CASTERS (FRONT LOCKABLE)
FLEXIBLE DUCT INLET(RETURN AIR)
CONDENSER INLET
PAPER PRE FILTER (INSIDE)
'POWER' LAMP
'ERROR' LAMP
CONDENSER OUTLET (HOT AIR)
POWER PLUG SOCKET
CONDENSATE WATER OUTLET
ELECTRIC PANEL
(ACCESS BY AUTHORIZED SERVICE
PERSONNEL ONLY)
CONDENSER INLET
※ASSEMBLE HOSE NIPPLE 1/2"x19
DIGITAL CONTROLLER

7
rev0
SPECIFICATIONS
MODEL AHSC-42 AHSC-60 AHSC-140
Capacity
Cooling
Btu/h
(kW)
42,000(12.3) 60,000(17.6) 145,000(42.5)
Heating 47,000(13.8) 60,000(17.6) 102,375(30)
Power supply - 220Vac 60Hz 1Ph 460Vac 60Hz 3Ph
Dimensions (WxDxH) inch 29.1x57.1x47.7 33.9x72.8x66.2
Weight lb 450 550 1,323
Power
Consumption
Cooling
kW
4.5 6.9 24
Heating 4.5 6.2 32
Current
Consumption
Cooling
A
21 10.6 30
Heating 21 9.7 40.5
Moisture
Removal
MAX
gal/day
59 76.7 127
AHAM 40.6 52.6 87.5
Refrigerant (R-410A) lb 6.62 11
Operating
Range
Cooling 77˚F DB 60%RH
~113˚F DB 40%RH
77˚F DB 60%RH
~113˚F DB 40%RH
Heating 50˚F DB 70%RH
~80.6˚F DB 50%RH
80.6˚F DB 50%RH
Dehumidifier 59˚F DB 60%RH~113˚F DB 40%RH
Power cord STANDARD

8rev0
CONTROL PANEL FUNCTIONS
①Power
Use to power on / off.
②∨ ∧ Button
Raises or lowers temperature and/ or sleep (off) time.
③Mode
Use to select cooling mode or Dehumidifier mode
or FAN mode
④Heat
Use to select heating mode.
⑤Off 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.
⑥Room
If the LED is on, the displayed temperature is
for room temp.
⑦Comp.
When the compressor is operating, the LED is on.
⑧Error
Error signal
E1 : High Pressure
E2 : Low Pressure,
E3 : Sensor problem
rP : Reverse Phase
⑨Display
Display Room temperature, and also the
setting temp and sleep time if they had been set.
(Display of 'LO' : under the 32℉, Display of 'HI' : over the 99℉)
79
73
Error
Remote
Room
Comp.
⑤
① ②
③
④
⑦
⑧
⑨
⑥

9
rev0
MODE CHANGING METHOD
CO
OL
HU
FA
hE
COOLING MODE
If you press 'Mode' button. 'COOL' is displayed.
then LED is on. MODE
DEHUMIDIFIER MODE
When the cooling is operating, If you press
the 'Mode' button. 'dEHU' is displayed.
then LED is on.MODE
FAN MODE
When the Dehumidifier is operating. If you press
the 'Mode' button, 'FAn' is displayed.
then LED is off. MODE
HEAT MODE
If you press 'HEAT' button. 'HEAt' is displayed.
then LED is on.

10 rev0
HOW TO SET THE ‘OFF’ TIMER.
This function enables you to set the length of time you want the HEAT PUMP 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 Heat Pump/Air conditioner+Heater 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 Heat Pump/Air conditioner+Heater 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

11
rev0
COOL OR HEAT MODE
•When turn ON, the setting temperature is displayed.
•You can change setting temperature.
•The display showing the set temperature will
blink 3 times.
COOLING & DEHUMIDIFIER MODE
HEATING MODE
Display Room Temperature range & Setting range.
TEMPERATURE CONTROL OPERATION
Cooling or Dehumidifier operates when Room
temperature is more than set temperature.
Cooling or Dehumidifier stop when Room
temperature is less than set temperature.
Heating operates when Room temperature is
less than set temperature.
Heating stops when Room temperature is
More than set temperature.
Mode Display range Setting range
Room Temp 32 ~99℉ 64 ~86℉
Mode Display range Setting range
Mode Display range Setting range
Room Temp 32 ~99℉ 68 ~99℉
Room Temp 32 ~99℉ 68 ~99℉
Mode Display range Setting range
Room Temp 32 ~99℉ 64 ~86℉
Mode Display range Setting range
Mode Display range Setting range
Room Temp 32 ~99℉ 68 ~99℉
Room Temp 32 ~99℉ 68 ~99℉
79

12 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 number 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.

13
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.
6. EVA FAN MOTOR PROBLEM
When the over current from eva fan motor is detected,
‘E6’ is displayed, the ‘Error’ LED will be On.
‘E1’ is displayed and the ‘Error’ LED will be on
when the pressure of the compressor is too high
and the high pressure switch is open.
1. HIGH PRESSURE
4. COMPRESSOR PROBLEM
When the over current from compressor is detected,
‘E4’ is displayed and the ‘Error’ LED will be On.
9. OVER HEAT
If eva fan is stop 'OH' is displayed and 'Error'
LED will be on.
5. COND FAN MOTOR PROBLEM
When the over current from cond fan motor is detected.
‘E5’ is displayed and the ‘Error’ LED will be On.
10. ANTI FREEZING
When the temperature of the evaporator is below
28℉, ‘AF’ is displayed.
2. LOW PRESSURE
‘E2’ is displayed and the ‘Error’ LED will be on
when the pressure of the compressor is too low.
7. HEATER PROBLEM
When the over current from heater is detected,
'E7' is displayed and the 'Error' LED will be on.
3.
ROOM, AF, TEMPERATURE SENSOR PROBLEM
If the thermistor is short circuited or cut, ‘E3’ is
displayed and the ‘Error’LED will be on.
8. REVERSE PHASE
When the three phase circuit is not correctly
connected, 'rP' is displayed and 'Error' LED will be on.
Error
※ Only AHSC-140
※ Only AHSC-140
※ Only AHSC-140
※ Only AHSC-140
※ Only AHSC-140

14 rev0
TROUBLE SHOOTING
TROUBLE CHECK REMEDY
NOT
WORKING
Power cable correctly connected Connect cable correctly
Power button "OFF" Press POWER button to "ON"
Blown fuse in electric panel Replace fuse
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℉
Heating: over 81℉)
Use only below Cooling & Dehumidifier 113℉
Heating 81℉
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℉
Heating: over 81℉)
Use only below Cooling & Dehumidifier 113℉
Heating 81℉

15
rev0
MAINTENANCE
After cleaning, completely dry the inside of the unit by operating it on ‘Fan only’
mode for 3 to 4 hours.
※ CLEANING FILTER
1.After removing bolt, Detach CABI FRONT LOWER
2.Pull the filter up to detach.
3.Clean the filter.
4.Reassemble in reverse order of disassembly.
1.Use 5/8" hose.
2.Have to apply U-Trap for drainage.
AHSC-140
After cleaning, completely dry the inside of the
unit by operating it on ‘Fan only’ mode for
3 to 4 hours.

16 rev0
ITEM
MODEL
DRAWING
AHSC-42
AHSC-60
COLD AIR ALUMINIUM FILTER
for Evaporator
HOT AIR
EXHAUST
EXAUST CHUMBER
Ø400
COLD AIR
EXHAUST
EXAUST CHUMBER
Ø300
ACCESSORIES
※ AHSC-42/60
AHSC-42/60

17
rev0
ACCESSORIES
MODEL
ITEM
HOT
AIR
EXHAUST
COLD
AIR
EXHAUST
DRAWING
AHSC-140
EXAUST CHAMBER
Ø500
EXAUST CHAMBER
Ø400
CONDEN-
SATE
WATER
DRAIN
CONDENSATE WATER
OUTLET
CONNECT PIPE
HANDLE
※ AHSC-140
AHSC-140

18 rev0
MEMO

19
rev0
MEMO

● 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 AHSC-42 / AHSC-60 / AHSC-140
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