Airrex HSC-18 - User Manual

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▶ 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

Table of Contents

Questions and Answers

O
olsonsueAug 9, 2025
How to troubleshoot an Airrex HSC-18 that is not working?
- E
  Erik HensleyAug 9, 2025
  If your Airrex Air Conditioner is not working, first ensure the power plug is correctly connected. If it is loose, connect it properly. Then, check if the power button is turned "ON". Also, examine the fuse in the board and exchange it if it's blown. Finally, check the load capacity and reset the breaker on the switchboard if it has tripped. Ensure that the ambient temperature is suitable for operation (below Cooling & Dehumidifier 113° or 104° for HSC-12L models).
T
theresagrahamAug 16, 2025
What to do if Airrex Air Conditioner is not cooling properly?
- E
  estradamarcusAug 16, 2025
  If your Airrex Air Conditioner is providing poor cooling, start by cleaning the filter, as it may be blocked with dust. Next, clean the heat exchanger to remove any accumulated dust. Ensure there are no obstacles against the inlet side, allowing at least 20 inches (50cm) of clearance. Also, make sure the ambient temperature is not too high; use the unit only below Cooling & Dehumidifier 113° or 104° for HSC-12L models.
L
Lauren Jones DVMAug 25, 2025
What to do if my Airrex HSC-18 Air Conditioner is not working?
- T
  Timothy MurphyAug 25, 2025
  If your Airrex Air Conditioner is not working, there could be several reasons: * Ensure the power plug is correctly connected; if not, connect it properly. * Check if the POWER button is in the “OFF” position; if so, press it to turn it “ON”. * Examine the electric panel for a blown fuse and replace it if necessary. * Inspect the supply fuse and exchange it if blown. * Verify if the breaker on the switchboard has tripped; check the load capacity and reset it. * Confirm that the ambient temperature is not too high (over 105°F); use the unit only below 105°F.
T
Terry JuarezAug 30, 2025
Why is my Airrex HSC-18 not cooling properly?
- J
  Joel FletcherAug 30, 2025
  If your Airrex Air Conditioner is not cooling well, consider these potential causes: * The filter might be blocked with dust; clean the filter. * There could be dust in the heat exchanger; clean the heat exchanger. * An obstacle might be blocking the inlet side; remove the obstacle and ensure 50cm of clearance. * The ambient temperature may be too high (over 105°F); use the unit only below 105°F.

Summary

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

SELECTION OF °F OR C

ERRORand WARNING INDICATORS

Fire Alarm & Error Signal Connection

FIRE ALARM SIGNAL CONNECTION

How to connect the unit to a fire alarm system for integrated safety.

ERROR SIGNAL CONNECTION

Details connecting error signals to external warning devices.

TROUBLE SHOOTING

MAINTENANCE

CLEANING THE AIR FILTERS

Step-by-step guide for cleaning the air filters of the unit.

ACCESSORY

WARRANTY

Airrex HSC-18 Specifications

General

Cooling Capacity	18, 000 BTU/h
Phase	1
Frequency	60 Hz
Power Consumption	1.8 kW
Current Consumption	8.2 A
Refrigerant	R-410A
EER (Energy Efficiency Ratio)	10

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