Blue Star HNHW18CA User manual

Inverter
Hi-Wall Split Airconditioners
(with Cordless Remote Control)
MODEL - HNHW18CA, HNHW24CA

First published - January 2011
No part of this publication may be reproduced in any manner
whatsoever without permission in writing from the Vice President,
Room Airconditioners Department, 9 Bazullah Road,
T.Nagar, Chennai 600 017.
While due care has been taken to avoid errors or
misinterpretation, Blue Star Limited is neither liable nor
responsible for consequence of any action taken, on the basis of
this publication.
All contents applicable as on date of publication. Modifications
may take place subsequent to that.
Published by Blue Star Limited, No. 9, Bazullah Road,
T. Nagar, Chennai-600017, India.
For restricted circulation only. Not for sale.

Letter from the Vice President 2
Product Features 3
Know your Airconditioner 4
Installation 6
Know your Remote Control
– An Overview 9
Display Icons 10
Working Temperature Range 13
Remote Control Operation 14
Additional Features of The Remote Control 16
Emergency Operation 17
Do’s & Don’ts 18
Maintenance 19
Troubleshooting Chart 20
Warranty 22
Warranty Certificate 24
Blue Star Service Centres 26
Contents
1
Indoor Unit
Models: HNHW18CA,
HNHW24CA

Dear Customer,
Congratulations on the purchase of your new high
performanceandenergyefficientInverterHi-WallSplit
Airconditioner. This superior product has been
engineeredforconvenientandoptimumperformance.
It has been manufactured with the best available
materials, with stringent quality controls undertaken
during all the manufacturing processes. It has been
tested in the factory under actual operating
conditions to ensure you years of satisfactory and
trouble-free performance.
Weareconfidentthattimeandperformancewilljustify
the trust you have placed in this product. This manual
will help you get the best of your Inverter Hi-Wall Split
Airconditioner. Please spare some time to go through
this manual carefully.
In the unlikely event of your running into a problem,
kindly check the Troubleshooting Chart to diagnose
thepossiblecauseandtakenecessarysteps.However,
do not hesitate to approach your dealer or the nearest
Blue Star office, if you require help. The list of Blue
Star service offices is given on back inner wrapper
of this manual.
IdohopethatyouwillenjoyusingyourInverterHi-Wall
Split Airconditioner.
With warm regards,
Mukundan Menon
Vice President
Letter from the
Vice President
2
Indoor Unit
Models: HNHW18CA,
HNHW24CA

Long Life
Great Looks
Small Footprint
Electronic Thermostat
Fuzzy Logic
Power Saver Compressor
Programmable Timer
Time Delay
Auto Restart
Memory Backup
Oscillating Louvres
Digital Display
3-Speed Cooling
High-purity Filtration
Dry Mode
Product Features
3
Indoor Unit
Models: HNHW18CA,
HNHW24CA

Blue Star Inverter Hi-Wall Split Airconditioners are
available in following models.
Know your Model Number
You can identify the model number of your AC based
on the tonnage:
All split airconditioners consist of two main components,
theIndoorUnit(IDU)andtheOutdoorUnit(ODU).While
theformer isinstalled inside the airconditioned room, the
latter is kept outside. This is because all the heat from
inside is rejected outside through the ODU. The ODU
houses the all-important part of your airconditioner – the
compressor.
Blue Star ODUs are capable of withstanding a 500 hour
salt spray test. The condenser coil is coated with ‘blue
fins’ to enhance coil efficiency and life, and to protect
it from chemicals and corrosion due to salinity.
The IDU is mounted on one of the walls of the room to
be airconditioned. The ODU can be mounted on a wall,
sunshade or skirting, outside the room. The two units
are connected through refrigerant pipes made of copper.
Know your
Airconditioner
Outdoor Unit
Nominal Tonnage Models
1.5TR HNHW18CA
2TR HNHW24CA
4
Indoor Unit
Models: HNHW18CA,
HNHW24CA

5
Inverter Technology.
Normal Split ACs have fixed Compressors ( They work
on Fixed RPM, Fixed Frequency i,e, 50Hz ),
Inverter Compressors can change their frequency from
low to high. Herein, Ambient Load & Room Load is
accounted for consistently. As the frequency changes,
RPM of the compressor changes. The Compressor/AC
uses its full capacity at start to quickly reach the set
temperature. As soon as the AC reaches the set
temperature, it adjusts the capacity to eliminate any
temperature fluctuations & maintain the comfort.
Heatpump, model will provide warm enviroment during
Winter
Inverter units are charged with R410A refrigerant the
new environment friendly refrigerant, which has almost
nil ozone depleting
Important Functions
Anti-freezingfunctionduringcoolingModeinthe Indoor
Unit: If the unit is running in COOL mode and set
in very low temperature, there will be frost formed
on the heat exchanger, when indoor heat exchanger
temperature goes below 4 deg C , the indoor unit
PCB will stop compressor running and protect the unit.
Defrosting during Heating Mode in the Outdoor Unit:
In case Ambient temperature becomes very low , frost
willformonoutdoorunit,thatwilleffecttheheatingeffect.
The auto defrosting function will stop the fan motors of
indoor unit and outdoor unit therby halting the heating
mode of the AC & protecting the AC
Indoor Unit
Models: HNHW18CA,
HNHW24CA

Installation
Locating the indoor and outdoor units properly will help
optimise the performance of your airconditioner. While
yourBlueStar/Dealer’sTechnicianwillbehappytoguide
you on the best location for your airconditioner, here are
a few helpful hints.
Locating the Indoor Unit
1. Locate the IDU for the best cool air circulation.
Preferably, there should be no obstructions nearby.
2. Do not locate the unit directly opposite a door which
is opened frequently. The cold air will go out of the
room each time the door is opened.
3. All indoor units will form condensate water. Please
ensure that the condensate can be drained out of
the room to a toilet / pantry, etc. The technician
will make sure that a “U” bend is provided in the
drain to prevent insects from coming into the room
through the drain tube.
6

Locating the Outdoor Unit
The outdoor unit houses the compressor, condenser,
condenser fan and electrical components. The heat
removed from the room is expelled to the atmosphere
through the outdoor unit.
Onceagain,theBlueStar/Dealer’sTechnicianwillensure
optimal installation of the ODU for you. However, the
following information will be of interest to you.
1. The Outdoor Unit can be mounted on a wall,
sunshade or skirting.
2. Ideally, the ODU should not be too far away from
the IDU; the recommended distances are marked
in the adjacent figure.
3. Ensure that air can pass freely through the unit.
Please allow at least 2 metres free space on the
air outlet side, and 0.3 metres on the air inlet
side.
4. If more than one ODU is to be installed, they
must be properly separated, so that the warm air
from the outlet of one does not enter the inlet of
the other.
7






5. Avoid long and complicated routing between the
IDU and ODU, as shown in the three adjacent
figures.
a. Too long
b. Too high
c. Too many bends
6. The ODU must be placed on a strong frame or
support. If mounted on a wall, please ensure that
the wall is thick enough and that the frame is
supported adequately.
7. Finally, it is most important for the ODU to be
easily accessible to the service technician. It is
advisable to discuss the same with the sales
engineer before deciding upon the location of the
Unit.
If the ODU is to be located on a high ledge,
adequate space must be provided for the service
technician to service the unit. It is a good idea to
provide a ‘catwalk’ (a platform) around the unit
and an access door / window close to the outdoor
unit location.
Electrical Outlet
After the location of the outdoor unit and indoor unit is
finalised, you must provide a suitable electrical outlet
near the Indoor unit.
8

Know your Remote Control
– an Overview
9

Display Icons
10

11

12

Working Temperature Range
The operating temperature range (outdoor temperature)
for cooling unit is 100C~ 480C; for cooling and heating
unit is -150C ~ 480C. 13
The Display Panel
on the Indoor Unit
1. Heat Mode Indicator
This indicator illuminates when the Airconditioner
is in Heat mode opertion.
2. Cool Mode Indicator
This indicator illuminates when the Airconditioner
is in Cool mode opertion.
3. Digital Display Indicator
Displays the current setting temperature when the
Airconditioner is in operation.
4. On / Off Indicator
This indicator illuminates when the Airconditioner
is in On/Off opertion.
5. Dry Mode Indicator
This indicator illuminates when the Airconditioner
is in Dry mode opertion.
6. Run light Indicator
Indoor sideDB/WB(oC) Outdoor sideDB/WB(oC)
Maximum Cooling 32/23 48
Minimum Cooling 21/15 10
Maximum Heating 27 24/18
Minimum Heating 20 -15
1
2
3
4
6
5

14

15

Additional Features of
The Remote Control
16

17
, HEAT) automatically according

Do’s ()
• Seal all air gaps in the room.
• Choose the right temperature to avoid over
cooling.
We recommend a setting of 230C at which both
comfort and efficient operation are achieved.
• Ventilate the room regularly.
• Switch off the power supply if not in use for
long.
• Unplug the unit while cleaning.
Do’s & Don’ts
Don’ts ()
• Don’t leave the doors and windows open when
the airconditioner is on.
• Don’t use hot water to clean the front grille.
• Don’t use scouring powder, harsh soaps, wax or
polish on the grille.
• Don’t switch on the airconditioner immediately
after switching it off. Wait for 2 minutes.
• Don’t operate with a clogged filter.
• Don’t block air intake & outlet vents.
• Don’t change settings frequently.
18
Indoor Unit
Models: HNHW18CA,
HNHW24CA