Roland FAVORITE ON-OFF Series User manual

FAVORITE
Service Manual 2019
ON-OFF Series

Table of Contents Page
1. Safety Precau�ons .....................................................................................1
1. In case of Accidents or Emergency
2. Pre-Installaon and Installaon
3. Operaon and Maintenance
2. Specifica�ons.............................................................................................3
1. Model Reference
2. Electrical Wiring Diagrams
3. Product Features .......................................................................................9
1. Operaon Modes and Funcons
4. Maintenance and Disassembly .................................................................14
1. Maintenance
2. Disassembly
5. Troubleshoo�ng............................................................................................57
1. Safety Cauon
2. General Troubleshoong
3. Error Diagnosis and Troubleshoong Without Error Code
4. Quick Maintenance by Error Code
5. Troubleshoong by Error Code
Appendix .........................................................................................................76
i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K)

Safety Precau�ons
Contents
1. In Case of Accidents or Emergency.............................................................. 2
2. Pre-Installa�on ..................................................................................................2
3. Opera�on and Maintenance ..............................................................................2

Page 2
To prevent personal injury, or property or unit damage,
adhere to all precauonary measures and instrucons
outlined in this manual. Before servicing a unit, refer to this
service manual and its relevant secons.
Failure to adhere to all precauonary measures listed in this
secon may result in personal injury, damage to the unit or
to property, or in extreme cases, death.
WARNING indicates a potenally hazardous
situaon which if not avoided could result in serious
personal injury, or death.
CAUTION indicates a potenally hazardous situaon
which if not avoided could result in minor or
moderatepersonal injury, or unit damage.
1. In case of Accidents or Emergency
WARNING
If a gas leak is suspected, immediately turn othe
gas and venlate the area if a gas leak is suspected
before turning the unit on.
If strange sounds or smoke is detected from the unit,
turn the breaker oand disconnect the power supply
cable.
If the unit comes into contact with liquid, contact an
authorized service center.
If liquid from the baeries makes contact with skin or
clothing, immediately rinse or wash the area well with
clean water.
Do not insert hands or other objects into the air inlet
or outlet while the unit is plugged in.
Do not operate the unit with wet hands.
Do not use a remote controller that has previously
been exposed to baery damage or baery leakage.
CAUTION
Clean and venlate the unit at regular intervals when
operang it near a stove or near similar devices.
Do not use the unit during severe weather condions.
If possible, remove the product from the window
before such occurrences.
CAUTION
While unpacking be careful of sharp edges around
the unit as well as the edges of the ns on the con-
denser and evaporator.
3. Opera�on andMaintenance
WARNING
Do not use defecve or under-rated circuit breakers.
Ensure the unit is properly grounded and that a
dedicated circuit and breaker are installed.
Do not modify or extend the power cable. Ensure
the power cable is secure and not damaged during
operaon.
Do not unplug the power supply plug during
operaon.
Do not store or use ammable materials near the
unit.
Do not open the inlet grill of the unit during
operaon.
Do not touch the electrostac lter if the unit is
equipped with one.
Do not block the inlet or outlet of air ow to the unit.
Do not use harsh detergents, solvents, or similar items
to clean the unit. Use a socloth for cleaning.
Do not touch the metal parts of the unit when
removing the air lter as they are very sharp.
Do not step on or place anything on the unit or
outdoor units.
Do not drink water drained from the unit
Avoid direct skin contact with water drained from the
unit.
Use a rm stool or step ladder according to
manufacturer procedures when cleaning or
maintaining the unit.
Pre-Installa�on and Installa�on
WARNING
Use this unit only on a dedicated circuit.
Damage to the installa area could cause the unit
to fall, potenally resulg in personal injury, prop-
erty damage, or product failure.
Only qualied personnel should disassemble, install,
remove, or repair the unit.
Only a qualied electrician should perform electri-
cal work. For more informa, contact your dealer,
seller, or an authorized service center.
Safety
Precautions
CAUTION
Do not install or operate the unit for an extended
period of me in areas of high humidity or in an
environment directly exposing it to sea wind or salt
spray.
Do not install the unit on adefecve or damaged
installaon stand, or in an unsecure locaon.
Ensure the unit is installed at a level posion
Do not install the unit where noise or air discharge
created by the outdoorunit will negavely impact the
environment or nearby residences.
Do not expose skin directly to the air discharged by
the unit for prolonged periods of me.
Ensure the unit operates in areas water or other
liquids.
Ensure the drain hose is installed correctly to ensure
proper water drainage.
When liing or transporng the unit, it is
recommended that two or more people areused for
this task.
When the unit is not to be used for an extended me,
disconnect the power supply or turn othe breaker.

Specifica�ons
Contents
1. Model Reference................................................................................................4
2. Electrical Wiring Diagrams .................................................................................5
2.1 Indoor Unit.......................................................................................................... 5
2.2 Outdoor Unit....................................................................................................... 7

Page 4
1. Model Reference
Refer to the following table to determine the specic indoor and outdoor unit model number of your purchased
equipment.
Indoor Unit Model Outdoor Unit Model Capacity ( ) Power Supply
220-240V~, 50Hz,
1Phase
Speci
ications
FU-07HSS010/N2-IN FU-07HSS010/N2-OUT
FU-09HSS010/N2-IN FU-09HSS010/N2-OUT
FU-12HSS010/N2-IN FU-12HSS010/N2-OUT
FU-18HSS010/N2-IN FU-18HSS010/N2-OUT
FU-24HSS010/N2-IN FU-24HSS010/N2-OUT
2,2
2,64
3,52
5,28
7,35

Page 5
2. Electrical WiringDiagrams
2.1 Indoor unit
Abbrevia�on Paraphrase
Y/G Yellow-Green Conductor
ION Posive and Negave Ion Generator
CAP Capacitor
PLASMA Electronic Dust Collector
to CCM Comm.Bus Central Controller (for CAC)
X Y E 485 Communicaon Line
L LIVE
N NEUTRAL
Heater The Electric Heang Belt of Indoor Unit
T1 Indoor Room Temperature
T2 Coil Temperature of Indoor Heat Exchanger Middle
T3 Coil Temperature of Condenser
T4 Outdoor Ambient Temperature
TH Compressor Sucon Temperature
EEV Elec Expansive Valve
T2B Coil Temperature of Indoor Heat Exchanger Outlet
Speci
ications

Page 6
FU-07HSS010/N2-IN, FU-09HSS010/N2-IN, FU-12HSS010/N2-IN FU-18HSS010/N2-IN
FU-24HSS010/N2-IN
INDOOR WIRINGDIAGRAM
OPTIONAL
Y/G
OPTIONAL
CAP
16022000022180
ION Applicable to
M M
AC motor only
M
3 5(3 or 2)
P1 2
P2
SWITCH BOARD
2CN701
1(L) S 4
OPTIONAL
3
X Y E 12V/5V HA HB
To CCM Comm.Bus or
485 Wire-controller
To Randomly
Connected
Wire-controller
To Remote AlarmTo Remote Switch
OPTIONAL
OPTIONAL
- - - - This symbol indicates the
element is optional,the actual
shape shall prevail.
2
HEATER
INDOOR WIRING DIAGRAM
16022000020455
OPTIONAL
3
5(3 or 2)
OPTIONAL
43
OPTIONAL
X Y E 12V/5V HA HB
To CCM Comm.Bus or To Randomly To Remote Alarm To Remote Switch
485 Wire-controller Connected
Wire-controller
- - - - This symbol indicates the
element is optional,the actual
shape shall prevail.
Y/G ION
CAP
Applicable to
AC motor only
MM
M
L
N
P1/PN
P2/PL 2SWITCH BOARD
CN701
OPTIONAL
4
HEATER
Speci
ications
BLUE(GREEN)

Page 8
2.2 Outdoor Unit
Abbrevia�on Paraphrase
4-WAY Gas Valve Assembly/4-WAY VALVE
AC-FAN Alternang Current FAN
DC-FAN Direct Current FAN
CT1 AC Current Detector
COMP Compressor
L-PRO Low Pressure Switch
H-PRO High Pressure Switch
FU-07HSS010/N2-IN, FU-09HSS010/N2-IN, FU-12HSS010/N2-IN FU-18HSS010/N2-IN
TO INDOOR UNIT
16022000001950
Speci
ications

Page 7
FU-24HSS010/N2-IN
1(3) 2(4)
Y/G A1 A2
Y/G
1
Symbol 2 indicates compressor internal or external components.
Speci
ications

Page 8
Product Features
Contents
1. Opera�on Modes and Func�ons...................................................................... 10
1.1 Abbreviaon ..................................................................................................... 10
1.2 Safety Features ................................................................................................. 10
1.3 Digital Display ................................................................................................... 10
1.4 Fan Mode.......................................................................................................... 11
1.5 Cooling Mode ........................................................................................... 11
1.6 Heang Mode ................................................................................................... 11
1.7 Auto-mode................................................................................................ 11
1.8 Drying Mode ..................................................................................................... 12
1.9 Forced Operaon Funcon .............................................................................. 12
1.10 Auto-Restart Funcon ...................................................................................... 12
1.11 Refrigerant Leakage Detecon......................................................................... 12
1.12 8°C Heang(Oponal)...................................................................................... 12
1.13 Self Clean(Opnal)......................................................................................... 12
1.14 Follow Me(Oponal)........................................................................................ 12
1.15 Informaon Inquiry .......................................................................................... 13

Page 10
1. Opera�on Modes and Func�ons
1.1 Abbrevia�on
Unit element abbreviaons
Abbrevia�on Element
T1
Indoorroom temperature
T2 Coil temperature of evaporator
T3
Coil temperature of condenser
T4 Outdoor ambient temperature
1.2 Safety Features
Compressor three-minute delay at restart
Compressor funcons are delayed for up to one minute
upon the rst startup of the unit, and are delayed for up
to three minutes upon subsequent unit restarts.
Zero crossing detec�on error protec�on
If AC can not detect zero crossing signal for 4 minutes or
the zero crossing signal me interval is not correct, the unit
will stop and the LED will display the failure. The correct
zero crossing signal me interval should be between
6-13ms.
Automa�c shutoffbased on fan speed
If the indoor fan speed registers below 300RPM for 2
minutes, the unit ceases operaon and the corresponding
error code is displayed on the indoor unit.
Current protec�on
The current exceeds seng value for certain me, the
compressor and outdoor fan will shut o.
Indoor fan delayed opera�on
•
When the unit starts, the louver is automacally
acvated and the indoor fan will operate aer a period
of 4 seconds.
•
If the unit is in heang mode, the indoor fan is
regulated by the an-cold wind funcon.
Sensor redundancy and automa�c shutoff
If one temperature sensor malfuncons, the air condioner
ceases operaon.
Refrigerant leakage detec�on
This funcon is acve only when cooling mode is selected.
It will detect if the compressor is being damaged by
refrigerant leakage or by compressor overload. This is
measured using the coil temperature of evaporator T2
when the compressor is in operaon.
1.3 Digital Display
Unit display funcons
Func�on
Display
Temperature Set temperature value
Temperature
(fan and Drying
mode)
Roomtemperature
Acvaon of Timer
ON, Fresh, Swing,
Turbo, or Silent
(3s)
Cancellaon of
Timer OFF, Fresh,
Swing, Turbo, or
Silent
(3s)
Defrost
Warming in heang
mode
Self-clean (available
on select units only)
Heang in room
tempurature
under 8°C
Product
Features

Page 11
1.4 Fan Mode
When fan mode is acvated:
•
The outdoor fan andcompressor are stopped.
• Temperature control is disabled and no temperature
seng is displayed.
•
The indoor fan speed can be set to high, med, low, or
auto.
•
The louver operaons are idencal to those in cooling
mode.
• Auto fan: In fan-only mode, AC operates the same as
auto fan in cooling mode with the temperature set at
24°C.
1.5 Cooling Mode
1.5.1 Compressor Control
When indoor room temp. T1 is lower than seng value,
the compressor and outdoor fan will shut o.
1.5.2 Indoor FanControl
In cooling mode, the indoor fan operates connuously. The
fan speedcan be set to high, medium, low, or auto.
1.5.3 Outdoor FanControl
The On-ooutdoor units have single fan speed. The
outdoor fan will run following the compressor except
when AC is in evaporator high temp. protecon in heang
mode, condenser high temp. protecon in cooling mode,
defrosng mode and the current protecon.
1.5.4 Evaporator Temperature Protec�on
When evaporator temperature drops below a congured
value, the compressor and outdoor fan ceases operaons.
1.5.5 Condenser Temperature Protec�on (only
for)
When condenser temperature is more than seng value,
the compressor will stop.
1.6 Hea�ng Mode(for heat pump models)
1.6.1 Compressor Control
When indoor room temp.T1 is higher than seng value
the compressor and outdoor fan will shut o.
1.6.2 Indoor FanControl
• When the compressor is on, the indoor fan can be
set to high/med/low/auto. And the an-cold wind
funcon has the priority.
•
The indoor fan speed will adjust according to the value
of T1-TS.
1.6.3 Outdoor FanControl
The outdoor units have single fan speed. The outdoor
fan will run following the compressor except when AC
is in evaporator high temp. protecon in heang mode,
condenser high temp. protecon in cooling mode,
defrosng mode and the current protecon.
1.6.4 Defros�ng mode
For FU-24HSS010/N2-IN:
•
The unit enters defrosng mode according to
changes in the temperature value of T3 as well as the
compressor running me.
•
In defrosng mode, the compressor connues to run,
the indoor and outdoor motor will cease operaon,
the defrost light of the indoor unit will turn on, and
the “ ”symbolisdisplayed.
•
If any one of the following condions is sased,
defrosng ends and the machine switches to normal
heang mode:
•
Unit runs for 10 minutes consecuvely in defrosng
mode.
• T3 TC2.
For other models:
•
The unit enters the defrosng mode according to the
value of temp dierence between T2 and T1, and also
the compressor running me.
•
During the defrosng mode, the compressor keep
running, indoor and outdoor motor will stop, defrost
lamp of the indoor unit will be lighted “ ” Will be
displayed (for someunits).
•
If any one of the following condions is sased,
defrosng ends and the machine switches to normal
heang mode:
•
The current of compressor maintained above I DEFROST
for 7 seconds.
• Times up.
•
T2 2°C aer entering defrosng mode for 3
minutes.
•
T2-T2 min 2°C maintained 4 minutes aer entering
defrosng mode for 2 minutes.
1.6.5 Evaporator Temperature Protec�on
When the evaporator temperature exceeds a preset
protecon value, the compressor stops.
1.7 Auto-mode
Product
Features

Page 12
• This mode can be selected with the remote controller .
•
In auto mode, the machine selects cooling, heang, or
fan-only mode on the basis of T ( T =T1-Ts).
T
Running mode
T>2
Cooling
-3 T 2
Fan-only
T<-3
Heang*
Heang*: In auto mode, cooling only models run the fan
•
AC will run in auto mode in the below cases:
•
Pressing the forced auto buon.
•
If AC is o, it will run in auto mode when the mer
on funcon is acve.
•
Aer seng the mode, AC will run in auto mode if
the compressor keeps not running for certain me.
1.8 Drying mode
• The compressor is cycled running with 10 minutes
on and then 5 minutes o. The indoor fan will keep
running at low speed.
• In drying mode, if roomtemperature is lowerthan
10°C, the compressor will stopand not resume un
room temperature exceeds 13°C.
•
The evaporator an-freezing protecon is the same as
that in cooling mode.
1.9 Forced opera�on func�on
• Forced cooling mode:
The compressor and outdoor fan connueto run and
the indoor fan runsat low speed. Aer running for 30
minutes, the AC will switch to auto mode with a preset
temperature of 24°C.
•
Forced auto mode:
Forced auto mode operates the same as normal auto mode
with a preset temperature of 24°C.
•
The unit exits forced operaon when it receives the
following signals:
•
Switch on
•
Switch o
•
Timer on
•
Timer o
•
Changes in:
•
mode
•
fan speed
•
sleeping mode
1.10 Auto-Restart func�on
• The indoor unit has an auto-restart module that
allows the unit to restart automacally. The module
automacally stores the current sengs (not including
the swing seng) and, in the case of a sudden power
failure, will restore those seng automacally within 3
minutes aer power returns.
• If the unit was in forced cooling mode, it will run in
this mode for 30 minutes and turn to auto mode with
temperature set to 24°C.
• If there is a power failure while the unit is running, the
compressor starts 3 minutes aer the unit restarts. If
the unit was already obefore the power failure, the
compressor starts 20 seconds aer the unit restarts.
1.11 Refrigerant Leakage Detec�on
• With this new technology, the display area will show
“EC” when the outdoor unit detects refrigerant
leakage.
•
When compressor is acve, the value of the Coil
temperature of evaporator T2 has no change or very
little change.
1.12 8 °C Hea�ng(Op�onal)
• In heang mode, the temperature can be set to as low
as 8°C, prevenng the indoor area from freezing if
unoccupied during severe cold weather.
•
When the compressor is o, the indoor fan motor is
off.
1.13 Selfclean(Op�onal)
• If you press “Self Clean” when the unit is in cooling or
drying mode:
•
For cooling models, the indoor unit will run in low
fan mode for a certain me, then ceases operaon.
•
For heat pump models, the indoor unit will run in
fan-only mode, then low heat, and nally in fan-
only mode.
•
Self Clean keeps the indoor unit dry and prevents
mold growth.
1.14 Follow me(Op�onal)
• If you press “Follow Me” on the remote, the indoor
unit will beep. This indicates the follow me funcon is
acve.
•
Once acve, the remote control will send a signal
every 3 minutes, with no beeps. The unit automacally
sets the temperature according to the measurements
from the remotecontrol.
Product
Features

Page 13
• The unit will only change modes if the informan
from the remote control makes it necessary, not from
the unit’s temperatureseng.
•
If the unit does not receive a signal for 7 minutes or
you press “Follow Me,” the funcon turns o. The
unit regulates temperature based on its ownsensor
and sengs.
1.15 Informa�onInquiry
• To enter informaon inquiry status, complete the
following procedure within ten seconds:
•
Press LED 3 mes.
•
Press SWING 3 mes.
•
If you are successful, you will hear beeps for a certain
time.
•
Use the LED and SWING buons to cycle through
informaon displayed.
•
Pressing LED will display the next code in the
sequence. Pressing SWING will show the previous.
•
The following table shows informaon codes. The
screen will display this code for two seconds, then the
informaon for 25 seconds.
Displayed code Explana�on
Displayed
value
Meaning Addi�onal Notes
T1
Roomtemperature
-14—70 -14—70
1. All displayed temperatures
use actual values.
2. All temperatures are
displayed in °C regardless
of remote used.
3. If the actual value exceeds
the range, it will display
the maximum value or
minimum value.
T2
Indoor coil
temperature
T3
Outdoor coil
temperature
Product
Features

Page 14
Maintenance and Disassembly
Contents
1. Maintenance .................................................................................................... 15
1.1 First Time Installaon Check ............................................................................ 15
1.2 Refrigerant Recharge........................................................................................ 17
1.3 Re-Installan................................................................................................... 18
1.3.1 Indoor Unit ....................................................................................... 18
1.3.2 Outdoor Unit .................................................................................... 20
2. Disassembly ..................................................................................................... 22
2.1 Indoor Unit........................................................................................................ 22
2.2 Outdoor Unit..................................................................................................... 34

Page 15
1. Maintenance
1.1 First Time Installa�on Check
Air and moisture trapped in the refrigerant system aects
the performance of the air condioner by:
• Increasing pressure in the system.
•
Increasing the operangcurrent.
•
Decreasing the cooling or heang eciency.
•
Congesng the capillary tubing due to ice build-up in
the refrigerantcircuit.
•
Corroding the refrigerant system.
To prevent air and moisture from aecng the air
condioner’s performance, the indoor unit, as well as the
pipes between the indoor and outdoor unit, must be be
leak tested and evacuated.
Leak test (soap water method)
Use a sobrush to apply soapy water or a neutral liquid
detergent onto the indoor unit connecons and outdoor
unit connecons. If there is gas leakage, bubbles will form
on the connecon.
Air purging with vacuum pump
(/TJUUX [TOZ)
(2OW[OJ YOJK)
(5[ZJUUX [TOZ)
:] U-]G_ \G R\ K
)RUYK
(-GY YOJK)
3GTOLURJ \GR\K
:NXKK-]G_ \GR\K
)USVU[TJ SKZKX
6XKYY[XK
MG[MK
)RUYK
-0.l36G
2U
.O
.GTJRK 2U
)NGXMK NUYK
.GTJRK . O
)NGXMK NUYK
<GI[[S
V[SV
<GI[[S
V[SV
Maintenance
and
Disassembly

Page 16
Procedure:
1. Tighten the are nuts of the indoor and outdoor
units, andconrm that both the 2- and 3-way valves
are closed.
2. Connect the charge hose with the push pin of Handle
Lo to the gas service port of the 3-way valve.
3. Connect the charge hose of Handle Hi connecon to
the vacuum pump.
4. Fully open the Handle Lo manifold valve.
5. Using the vacuum pump, evacuate the system for
30 minutes.
a. Check whether the compound meter indicates
-0.1 MPa (14.5 Psi).
•
If the meter does not indicate -0.1 MPa
(14.5 Psi) aer 30 minutes, connue
evacuang for an addional 20 minutes.
• If the pressure does not achieve -0.1 MPa
(14.5 Psi) aer 50 minutes, check for leakage.
•
If the pressure successfully reaches -0.1 MPa
(14.5 Psi), fully close the Handle Lo valve and
cease vacuum pump operaons.
b. Wait for 5 minutes then check whether the gauge
needle moves aer turning othe vacuum pump.
6. Loosen the are nut of the 3-way valve for 6 or
7 seconds and then ghten the are nut again.
a. Conrm the pressure display in the pressure
indicator is slightly higher than the atmospheric
pressure.
b. Remove the charge hose from the 3-way valve.
7. Fully open the 2- and 3-way valves and hten the
cap of the 3-way valve.
Maintenance
and
Disassembly