Olimpia splendid MAESTRO SMART 9HP User manual

EN
MODEL # 01721/02020/2216
9,200 BTU Heat Pump
115 volt
1 phase
SMART 9HP

2
SYMBOLS USED IN THIS MANUAL AND THEIR
MEANING
WARNING
To identify actions that, if not performed correctly, may cause
general accidents, personal injury, or death.
CAUTION
To identify actions that, if not performed correctly, may cause general
accidents, or may cause malfunctions.
NOTE
To identify important information and particularly delicate steps.
PRODUCTS
MODEL
CODE
Maestro Smart 9 HP
02020
Maestro Smart 9 HP RFL
02216
Maestro Smart 12 HP
01721
IDENTIFYING INFORMATION
An identification label is on the unit, showing the device information.
TABLE OF CONTENTS
1 WARNINGS AND SAFETY RULES 4
2 DESCRIPTION OF UNIT 5
2.1 Structure........................................................................... 5
2.2 Technical features............................................................ 6
2.3 Dimensions ...................................................................... 7
2.4 Control panel.................................................................... 8
2.4.1Operating conditions............ ...... .................8
2.5 Remote control................................................................. 8
2.5.1 Buttons........................... ...... .......................8
2.5.2 Display ........................................................9
3 OPERATING LOGIC 10
3.1 Automatic mode ............................................................. 10
3.2 Cooling mode ................................................................. 10
3.3 Heating mode (only for heat pump units)....................... 11
3.4 Defrosting....................................................................... 11
3.5 Dehumidifier only mode ................................................. 12
3.6 Fan only mode ............................................................... 12
3.7 Nighttime comfort mode ................................................. 12
3.8 Auto restart function ....................................................... 12
3.9 Standby mode................................................................ 12
3.9.1 Air outlet louver control ............................. 13
3.10 Timer programming........................................................ 13
3.11 Air conditioner auto test mode ....................................... 13
3.12 Board auto test mode..................................................... 14
3.13 Condensate draining and disposal................................. 14
4 ELECTRICAL DIAGRAM 15
5 COOLING CIRCUIT 16
5.1 Cooling circuit with 4-way valve diagram ....................... 16
5.2 Heating circuit with 4-way valve diagram....................... 16
6 INSTALLATION 17
6.1 Included items ................................................................ 17
6.2 Position .......................................................................... 17
6.2.1 Installation at ceiling level.........................17
6.2.2 Installation at floor level ............................17
6.3 Assembly........................................................................ 18
6.3.1 Drilling into the wall...................................18
6.3.2 Draining condensate.................................18
6.3.3 Condensate drain connection to the unit ..18
6.3.4 Air intake...................................................19
6.3.5 External grille ............................................19
6.3.6 Location of holes on the unit.....................19
6.4 Mounting the unit............................................................ 20
6.5 Electrical connections .................................................... 20
6.6 Turning the unit ON ........................................................ 20

MAESTRO SMART 3
7 ALARM DIAGNOSTICS 21
7.1 Alarm codes ....................................................................21
7.2 Dirty filter warning ...........................................................21
7.3 Temperature sensor alarm (TFS) ...................................21
7.4 External exchanger overheat alarm (HTE) .....................21
7.5 Internal exchanger overheat alarm .................................21
7.6 Exchanger low temperature alarm..................................22
7.7 Condensate level alarm ..................................................22
7.8 Pump reversal notification...............................................22
7.9 Invalid EEPROM parameters alarm................................22
7.10 Internal fan malfunction alarm.........................................22
7.11 Condenser assembly (int./ext.) overheat alarm..............22
7.12 Alarms.............................................................................23
7.12.1 Dirty filter alarm ........................................23
7.12.2 Internal motor malfunction alarm..............23
7.12.3 Sensor short circuit/disconnected alarm ..23
7.12.4 Water level alarm......................................24
7.12.5 External coil temperature alarm. ...... .........25
7.12.6 Internal coil temperature alarm . ...... ..........26
7.12.7 Invalid EEPROM parameters alarm .........26
7.12.8 Condenser assembly temperature not
reached.....................................................26
8 COMPONENTS 27
8.1 4-way valve.....................................................................27
8.2 Power board....................................................................27
8.3 Display ............................................................................27
8.4 Thermoactuator and shutoff valve ..................................27
8.5 Ambient temperature sensor...........................................27
8.6 External temperature sensor...........................................28
8.7 Evaporator assembly sensor ..........................................28
8.8 Condenser assembly sensor ..........................................28
8.9 Float switches..................................................................28
8.10 Pump...............................................................................28
8.11 Internal (tangential) fan ...................................................29
8.12 External fan.....................................................................29
8.13 Compressor ....................................................................29
8.14 Evaporator assembly ......................................................29
8.15 Condenser assembly ......................................................29
8.16 Louver motor...................................................................29
8.17 Condensate slinger group...............................................30
8.18 Capacitor ........................................................................30
9 COMPONENT DISASSEMBLY 30
9.1 Filter removal ................................................................. 31
9.2 Body removal ................................................................. 32
9.3 Front panel removal ....................................................... 32
9.4 Board housing cover removal ........................................ 33
9.5 Grille removal ................................................................. 33
9.6 Back panel removal........................................................ 34
9.7 External fan removal ...................................................... 34
9.8 Upper tank removal........................................................ 35
9.9 Internal fan removal ....................................................... 36
9.10 Display board removal ................................................... 36
9.11 Electronic assembly housing removal............................ 36
9.12 Main board removal ....................................................... 37
9.13 Capacitor removal.......................................................... 37
9.14 Pump-sensors-shutoff valve group removal .................. 38
9.15 Cabling cover removal ................................................... 38
9.16 Thermoactuator group removal...................................... 38
9.17 Pump removal ................................................................ 39
9.18 Intermediate tank assembly removal ............................. 39
9.19 Condensate slinger assembly removal........................... 40
9.20 Refrigerant loading/removal........................................... 40
9.20.1 Unit with front charging .............................40
9.20.2 Unit with rear charging..............................40
9.20.3 General procedure....................................41
9.21 Condenser assembly removal ....................................... 41
9.22 Evaporator assembly removal ....................................... 42
9.23 Compressor removal...................................................... 43
9.24 Float removal ................................................................. 44
10 EXTERNAL CONNECTIONS 44
10.1 B1018Wi-Fi kit............................................................... 44
10.1.1 Overview...................................................44
10.1.2 Wi-Fi board structure ................................44
10.1.3 Technical data ..........................................44
10.1.4 Wi-Fi board installation .............................45
10.2 Olimpia Splendid MAESTRO app....................................... 46
10.2.1 Downloading and installing the app..........46
10.2.2 App configuration on your smartphone.....46
10.2.3 Control diagrams ......................................46
10.2.4 Climate control unit settings .....................47
11 REGULAR MAINTENANCE 49
11.1 Cleaning-replacing the filter ........................................... 49
11.2 Maintenance................................................................... 49
11.3 Condensate water discharge ......................................... 49
11.4 External cleaning............................................................ 49
11.5 Periodic maintenance table............................................ 49
12 SENSOR VALUES 50
12.1Coil and air sensors table ............................................. 50

4
1 WARNINGS AND SAFETY RULES
WARNING
READ INSTRUCTIONS
Carefully read this manual before performing any
action on the device.
Failure to follow these instructions may cause
property damage, personal injury, or death.
WARNING
When performing maintenance on the device,
ensure that it is installed correctly, in accordance
with current regulations. Failure to do so may cause
substantial damage to property, serious injury or
death.
- The owner and manager are responsible for
operational safety and compliance with
regulations for heating equipment.
- Incorrect installation, adjustment or maintenance
may cause damage to property, personal injury,
or death.
WARNING
HIGH PRESSURE HAZARD
The cooling circuit contains refrigerant and oil at
high pressure.
The correct safety procedures must be followed and
proper protection equipment must be worn when
working with refrigerants.
Failure to follow these instructions may cause
serious injury or death.
NOTE
RISK OF FIRE
The use of a torch requires extreme caution. Follow all suggested
safety precautions and protect surrounding areas with fireproof
materials. Have an extinguisher within reach. Failure to follow these
instructions may cause moderate to serious damage.
NOTE
This unit must be installed and connected to electrical power only
by qualified personnel in accordance with the installation
instructions and current local regulations.
The manufacturer assumes no liability for the incorrect installation
of any devices.
WARNING
ELECTROCUTION HAZARD
Ensure that the electrical outlet is configured to
match the device connector. If not, consult a
certified electrician.
-Do not use plug adapters.
-Do not use extension cords.
-Do not remove the ground connector.
Always plug into a grounded 3-prong outlet.
Failure to follow these instructions may cause
serious injury or death.
NOTE
This unit must be maintained by qualified personnel
at least once per year, in accordance with current
legislation.
NOTE
Incorrect maintenance or adjustment may damage
this unit and cause injury to persons or create a
potential hazard.
WARNING
Do not remove, disable, or bypass safety devices on
this unit. Doing so may cause fire, injury, or death.
WARNING
ELECTROCUTION RISK
Before any maintenance or cleaning, disconnect the
device from the power supply.
Failure to follow these instructions may cause
electrical shock, serious injury or death.
WARNING
DANGER – MOVING PARTS
-Operation of the unit if out of service or with the
front grille removed is prohibited.
- Placing hands in the fan operation area is
prohibited.
Failure to follow these instructions may cause
serious injury.

MAESTRO SMART 5
2 DESCRIPTION OF THE UNIT
2.1 Structure
No. DESCRIPTION
1 Upper grill
2 Body
3 Louver
4 Display
5 Remote control
6 On/Off button
No. DESCRIPTION
7 Evaporator group
8 Condenser assembly group
9 Control panel
10 Base
11 Compressor group
12 Evaporating fan

6
2.2 Technical properties
DESCRIPTION
9 HP
9 HP RFL
12 HP
Model
02020
02216
01721
Energy class
Cooling (1)
A
Heating (3)
A
Rated cooling capacity (1)
BTU/Hr.
Rated heating capacity (3)
BTU/Hr.
Rated cooling power consumption (1)
W
Rated current draw (cooling)(1)
A
Rated heating power consumption (1)
kW
Rated current draw (heating)(1)
A
Rated energy efficiency index (1)
2.6
Rated efficiency coefficient (3)
3.1
Energy consumption in thermostat off mode
W
0.0
Energy consumption in standby mode (EN 62301)
W
0.5
Energy consumption for dual duct (1) unit, cooling function
kWh/hr.
0.9
1.0
Energy consumption for dual duct (3) unit, heating function
kWh/hr.
0.7
0.8
Power supply
V-P-Hz
230-1-50
Min./Max. power supply
V
198/264
Max. power draw in cooling mode (2)
kW
0.9
1.1
Max. current draw in cooling mode (2)
A
4.0
4.8
Max. power draw in heating mode (4)
W
850
1.1
Max. current draw in heating mode (4)
A
3.8
4.8
Dehumidification capacity
l/hr.
0.9
1.1
Ambient air cooling capacity (max./med./min.)
m3/hr.
490/430/360
490/430/360
Ambient air heating capacity (max./med./min.)
m3/hr.
410/350/270
450/400/330
External air cooling capacity (max./med./min.)
m3/hr.
520/350
500/340
External air heating capacity (max./med./min.)
m3/hr.
520/350
500/340
Internal/external fan speed
3.3
Wall opening diameter
mm (inches)
162/202 (6.4/8)
Maximum remote-control range (distance/angle)
m/°
8/±80°
Sound pressure level (5) min.-max.
dB(A)
33-41
33-42
Sound power level (internal only) (EN 12102)
dB(A)
56
57
Degree of cover protection
IP 20
Refrigerant gas
Type
R410A
Refrigerant gas charge
Kg (lb.)
0.65 (1.44)
0.55 (1.21)
Max. operating pressure
MPa
1.3
Max. operating pressure, intake side
MPa
1.30
Power supply cable (No. conductors x cross section mm2)
3 x 1.5
Test conditions
(1) External ambient temp. DB 35°C – WB 24°C (DB 95°F – WB 75°F); Internal ambient temp. DB 27°C – WB 19°C (DB 80°F – WB 66°F).
(2) External ambient temp. DB 43°C – WB 32°C (DB 109°F – WB 90°F); Internal ambient temp. DB 35°C – WB 24°C (DB 95°F – WB 75°F).
(3) External ambient temp. DB 7°C – WB 6°C (DB 44°F – WB 42°F); Internal ambient temp. DB 20°C – WB 15°C (DB 68°F – WB 59°F).
(4) External ambient temp. DB 24°C – WB 18°C (DB 75°F – WB 64°F); Internal ambient temp. DB 27°C (DB 80°F).
(5) The sound pressure level was measured in a semi-anechoic room at a distance of 2 meters from the front of the unit with the microphone at a height
of 1 meter. “Minimum” is understood to mean fan-only internal noise at lowest speed.
9,212
8,530
930
8.3
850
8.15

MAESTRO SMART 7
DESCRIPTION
MAESTRO SMART
Internal temperature
Maximum operating temperature in cooling mode
°C/°F
DB 35°C – WB 24°C / DB 95°F – WB 75°F
Minimum operating temperature in cooling mode
°C/°F
DB 18°C / DB 64°F
Maximum operating temperature in heating mode
°C/°F
DB 27°C / DB 80°F
Minimum operating temperature in heating mode
°C/°F
-
External temperature
Maximum operating temperature in cooling mode
°C/°F
DB 43°C – WB 32°C / DB 109°F – WB 89°F
Minimum operating temperature in cooling mode
°C/°F
DB -10°C / DB 50°F
Maximum operating temperature in heating mode
°C/°F
DB 24°C – WB 18°C / DB 75°F – WB 64°F
Minimum operating temperature in heating mode
°C/°F
DB -15°C / DB 59°F
(*) Since the company is continually working to improve all of its products, the aesthetic and dimensional properties, technical data, equipment, and
accessories may be subject to change. Please consult the latest publications.
2.3 Dimensions
DESCRIPTION
MAESTRO SMART
9 HP
12 HP
Dimensions (without packaging)
inches (mm)
902 x 516 x 229 (35.5” x 20.25” x 9”)
Dimensions (with packaging)
inches (mm)
978 x 610 x 356 (38.5” x 24” x 14”)
Weight (without packaging)
Kg (lbs.)
40 (88)
Weight (with packaging)
Kg (lbs.)
44 (97)
D
W

8
2.4 Control panel
REF.
DESCRIPTION
G
Remote control signal reception indicator
LED DL1
GREEN LED
LED DL2
YELLOW LED
LED DL3
GREEN LED
LED DL4
RED LED
H
RESET Microswitch
2.4.1 Operating conditions
FUNCTION
DL1
(GREEN)
DL2
(YELLOW)
DL3
(GREEN)
DL4
(RED)
Standby
OFF
OFF
OFF
OFF
Unit on
ON
-
-
-
Timer(s) on standby
OFF
ON
OFF
ON
Timer(s) on unit on
ON
ON
-
-
Compressor ON
ON
-
ON
-
Start auto test program
On 1 sec.
Off 1 sec.
On 1 sec.
Off 1 sec.
On 1 sec.
Off 1 sec.
On 1 sec.
Off 1 sec.
2.5 Remote control
The remote control is the interface between the unit and the end user. It
is very important to learn all the functions of the remote, how to use the
various controls and the meaning of the symbols used on the remote.
2.5.1 Buttons
REF.
DESCRIPTION
1
ON/OFF (Standby)
2
Automatic button
3
Nighttime comfort button
4
Operating mode switch
5
Fan speed switch
6
Time and program set button
7
Increase or decrease time and temperature
8
Fresh air button (fresh air kit not available for this unit)
9
Oscillating louver on/off
10
Reset button
11
Program activation
12
Program 1 / Program 2 functions on/off
13
Report unit display on/off

MAESTRO SMART 9
2.5.2 Display
REF.
DESCRIPTION
1
Fan speed
2
Heat
3
Cool
4
Dehumidify only
5
Fresh air on (not available on this unit)
6
Nighttime operation
7
Automatic operation
8
Turn on first operating program
9
Turn on second operating program
10
Specify time or temperature
11
Desired temperature / time / programming
12
Fan speed
13
Command in progress
14
Program off time
15
Clock/Program timer
16
Program on time
17
Low battery indicator
18
Minutes timer

10
3OPERATING LOGIC
3.1 Automatic mode
This mode may be turned on from the remote control or by pressing the
button on the machine (H). The temperature and operating mode are
managed automatically using the following parameters:
INTERNAL AMBIENT
TEMPERATURE
MODE INTERNAL FAN
T< 17°C
Heat
HIGH speed
17°C<T< 19°C
Heat
MEDIUM speed
19°C < T < 21°C
Heat
LOW speed
21°C < T < 23°C
Fan
LOW speed
23°C < T < 25°C
Cool
LOW speed
25°C M T < 27°C
Cool
MEDIUM speed
T > 27°C
Cool
HIGH speed
After several changes, the fan speed or the operating mode remain the
same for at least 3 minutes to avoid annoying oscillations.
In this operating mode, ambient temperature correction is always turned
off (even if bit1 of the mch_id parameter isactive) and the louver is
forced into auto swing only ifautomatic mode was turned on using the
button on the unit (H).
3.2 Cooling mode
In this mode, the unit dehumidifies and cools the environment. This
operation must however be preceded by setting the desired temperature
and selecting the fan speed. After 3 minutes (maximum time) following
activation of the same, the compressor turns on and the unit starts to
generate cold air. If the internal temperature is lower than the
temperature set point the compressor does not turn on. This mode may
be selected only from the remote control (LED DL1 is always ON in this
operating mode).
The condensate disposal actuator is always off except in the following
two cases:
1. If the pump has run continuously for 60 sec., the condensate
disposal actuator isturned on for 3 min. After this time, the actuator
is turned off. The 3 min. that the actuator isturned on is regardless
of the selected operating mode.
2. If the external temperature <15°C(59°F),the condensate disposal
actuator isturned on until the external temperature >17°C(62.6°F)
or the unit isplaced in standby.
The internal fan is always powered on and runs at the selected speed for
any compressor status (except during overheating of the external heat
exchanger, when it is off). If automatic fan speed is selected, check for
the following conditions (regardless of compressor status):
-Tset < Troom <3°C(5.4°F):low speed.
-Tset+3°C(5.4°F): < Troom < Tset+6°C(10.8°F)::medium speed.
-Troom > Tset + 6°C(10.8°F)::high speed.
After every change, the fan speed or the operating mode stay the same
for at least 3 minutes toavoid annoying oscillations.
The desired temperature (Tset) may be adjusted via the remote control
from 18°C(64.4°F): to 30°C(86°F): in increments of1°C(2°F):.
After 3 minutes have passed following activation or the prior compressor
shutdown, the compressor and the external fan are turned on if Troom >
Tset+Tdtr (Tdtr = hysteresis) and Troom < Tset (if when turned on, Tset <
Troom < Tset+Tdtr the compressor and the external fan are turned on).
The external fan speed is linked to the temperature of the external heat
exchanger, independent of the internal fan speed set, according to the
following diagram:
Starting with the external fan set to OFF, when the temperature of the
external heat exchanger (TBE) exceeds Tbe+offlow (ID150, EEPROM
address 47),the external fan starts at low speed (without delay). Assoon
as TBE exceeds the Tbe_low-med (ID150, EEPROM address 22)
parameter, the external fan goes from low speed to medium speed
(without any delay); when TBE exceeds Tbe_medmax (ID150, EEPROM
address 21) the external fan goes from medium speed to high speed
(without any delay). IfTBE falls below Tbe_medmax – Tbe_delta
(Tbe_delta has ID150, EEPROM address 46),the external fan goes from
high to medium speed, but onlyifthe t_delay (sec) time (ID150,
EEPROM address 38) has already passed at high speed. IfTBE falls
below Tbe_lowmed – Tbe_delta, the external fan goes to low speed “from
any prior speed (medium or high), butonlyift_delay seconds have
passed at the prior speed. Similarly, ifTBE falls below Tbe_offlow –
Tbe_delta, the external fan may be turned off, but only ift_delay seconds
have passed at the prior speed. In other words, depending on the values
of TBE, the external fan speed may be increased without delay, while it
may be reduced only if the current speed is maintained for t_delay
seconds.
In cooling mode, only when the compressor ison, ifthe pump switch is
closed (normally open),the condensate pump turns on and stays on until
t_spscon seconds have passed or as long as the pump switch remains
closed. Ifthe pump remains on for more than 1 minute (continuously, the
condensate disposal actuator mustbe turned on for 3 minutes. After his
period of time, the condensate disposal actuator isswitched OFF (if
however, the operating mode is switched to heat, the condensate disposal
actuator will remain ON).

MAESTRO SMART 11
In this operating mode, after the compressor is on for 8 minutes, if the
internal exchanger temperature TBi<Tlt1, the external fan and
compressor are shut down (the internal fan stays on until the internal heat
exchanger is defrosted) until TBi>Tlt2 and 3 minutes have passed. During
the antifreeze function (external fan and compressor OFF, internal fan
ON, until TBi>Tlt2 and 3 minutes have passed), the pump may be on (if
turned on from the level switch), and if the compressor is off, and the OFF
alarm is deactivated.
Upon completion of the antifreeze function (TBI Tlt2> and 3 minutes have
passed), the pump resumes normal behavior (it may be turned on only if
the compressor is on) and the OFF alarm becomes active (when the
function ends, if the maximum water level switch remains open for
1 minute, the alarm goes to OFF).
In cooling mode, if the condensate pump runs continuously for more than
t_mmxfcp, the external fan (when it is set to turn on) must be forced to
high speed (even if night mode is selected), and if bit 3 of the mch_id
parameter is active (1), the condensate pump (FCP) malfunction notice is
shown on the display. Both the external fan at high speed and the FCP
notice (if enabled) will terminate only when the unit is switched to another
operating mode (including standby). When subsequently activated in
cooling mode, the external fan starts to run as usual and the pump must
run for t_mmxfcp minutes until this function is reactivated.
In this operating mode, only FS, TFS, HTE, CF/RL, DI, FCP, CKS and SV
alarms or notices are enabled.
3.3 Heating Mode (only for heat pump units)
This mode is activated only if bit0 of the mch_id parameter isenabled (1)
and it may be selected only from the remote control (if bit0 of the mch_id
parameter isreset (0) no commands related to heating mode may be
carried out).
In heating mode, the condensate disposal pump must always be off,
while the condensate disposal actuator mustalways be on.
The setpoint temperature (Tset) may be adjusted via remote control from
15°C(59°F): to 30°C(86°F): at1°C(2°F): intervals.
Correction of the ambient temperature Tcamb) isactive only ifbit1 of the
mch_id parameter isenabled (1).
If Troom (+ Tcamb)> Tset-T_dtr isnot equal to zero (only DL1 is on).
If Troom (+ Tcamb <Tset-T_dtr, and only 2 minutes have passed since
activation of the function, the 4-way valve is activated and the external
fan is set to minimum speed (according to the ris_elow parameter). After
t_ac seconds the external temperature Toutdoor isacquired and stored
as Tbatex *.If3 minutes have passed since the prior compressor
shutdown, the compressor may be activated and the external fan may
switch to the selected speed (only 2 speeds are available for the external
fan: average speed if low or medium speed was selected from the remote
control, high speed if high speed was selected from the remote control) if
Tbatex * >T_vem, while if Tbatex * < T_vem, the maximum speed is set
(regardless of the speed selected from the remote control and whether
nighttime mode is selected).
When Troom (+ Tcamb) >Tset, the compressor and the external fan are
turned off (the 4-way valve remains on). The next time that the condition
Troom (+ Tcamb) <Tset-T_dtr is met,another hot startup procedure is
launched (external fan at low speed for t_ac seconds, acquisition of
Tbatext *,and so on).
The internal fan remains offuntil TBi <T_hs1. When TBi>T_hs1, the
internal fan switches to low speed (regardless of the fan selection and the
status of the other outputs). After 3 minutes have passed, ifTBi>T_hs1
+6°C(10.8°F),itmay switch to the selected fan speed (if high speed was
selected, the fan first starts at medium speed for 3 minutes, then switches
to high speed), otherwise (T_hs2 < TBi <T_hs1 +6°C(10.8°F))it
maintains its low speed status. IfTBi falls or isbelow T_hs1 +6°C(10.8°F),
the internal fan speed switches to the next lower speed setting (medium if
itwas on high, low ifit was on medium), maintaining each speed setting
for at least 3 minutes. After this, ifTBi again goes above T_hs1 +6°
C(10.8°F), the internal fan speed is set to the next higher speed (medium
ifitwas on low, high if itwas on medium), maintaining each speed setting
for at least 3 minutes and avoiding exceeding the speed setting selected
by the user. In these situations, ifa new speed selection is received, itis
effective immediately.
When the fan speed is set to automatic, the actual speed is selected
based on the ambient temperature, asfollows:
–Tset – 3°C(5.4°F) < Troom (+Tcamb) <Tset: low speed.
–Tset – 6°(10.8°F) < Troom (+Tcamb) <Tset +3°C(5.4°F):medium speed.
–Troom (+Tcamb) <Tset-6°C(10.8°F):high speed.
At least 3 minutes must pass between one automatic speed change and
the next (if Tset or the selected fan speed is changed, the new speed is
enabled immediately).
If TBi < T_hs2, the internal fan is turned off (regardless of the status of
other outputs).
Since TBi > T_sh1, the external fan is turned off (regardless of the status
of other outputs) and it is turned on again only when TBi < T_sh2.
3.4 Defrosting
Defrosting starts when one of the following conditions occurs:
1After the compressor is on for t_sh minutes, if TBE < T_defren and
Tbatex *- TBE > T_thsu (* Tbatex is Toutdoor acquired and stored in
memory at the start of the heating cycle), defrosting has started, but
only if the external fan is not currently off due to high internal
exchanger temperature (TBi>T_sh1). In the latter case, when
TBi<T_sh2 the timer t_sh is set reset so that the subsequent
defrosting does not take place before t_sh minutes have passed.
2 If Tbatex * <T_sbatex, every t_ma minutes after the start of heating
mode, the defrosting subprogram is activated (only if the compressor
is on). The timer t_ma is reset upon every defrost cycle, even if it is
caused by condition 1.

12
During the defrosting function, the machine operates as follows:
–The compressor and both the fans are turned off.
- After t_dq seconds, the 4-way valve is powered off.
- After t_d2 seconds the compressor turns on, and this is true until
TBE > T_batexfs or until t_ms minutes have passed. Then the
compressor is turned off.
- After t_d3 seconds, the 4-way valve is powered on.
- After t_d4 seconds the next heating cycle can start (if Troom (+
Tcamb) < Tset-T_dtr, the external fan is turned on at low speed for
t_ac seconds. Toutdoor is acquired as Tbatex* and the compressor
starts to run, and so on).
Defrosting does not stop if Troom (+ Tcamb) > Tset or if the unit is placed
in standby (if a STBY mode is received during the defrost function, the
unit waits until defrosting is complete before turning off).
When exiting heating mode and starting any other mode (including
standby), the 4-way valve remains powered on for 2 minutes.
During this operating mode, only FS, TFS, HTI, CR / RL, DI, CKS and SV
are enabled, except during defrosting (via CF/RL alarm).
3.5 Dehumidification only mode
This mode may be selected only from the remote control. It works similar
to the cooling mode, except that:
–internal fan speed is set to low speed (except during an external
exchanger overheating alarm when it isoff).
–the compressor may be turned on only after 3 minutes following the
function request (during this period only the internal fan runs at low
speed).
–Tset isassumed to be equal to the Troom acquired shortly after
compressor activation (and it cannot then be changed, until the next
function request).
–the compressor operating cycle is controlled as follows:
•continuous mode access (min. 4 minutes) for Troom > Tset’°C
•4 minutes ONand 4 minutes OFF for Tset-1°C(1.8°F)<Troom
< Tset’+ 1°C(1.8°F)
•
•
4 minutes ONand 8 minutes OFF for Tset’-3°C(5.4°F) <
Troom, <Tset’-1°C(1.8°F)
off in continuous mode (min. 8 minutes) for Troom <Tset’-3°C
(5.4°F).
When the compressor is on, the external fan speed is set according to
TBE based on the same values as for cooling mode.
The anti-freeze function, management of condensate disposal and of the
condensate disposal pump are the same as in cooling mode (except for
the 4-way valve for 2 minutes if heating mode was previously selected.
3.6 Fan only mode
This mode may be selected only from the remote control. In this operating
mode, only the internal fan and LED DL1 are always powered on and it is
possible to select the desired fan speed at any time by pressing the
corresponding button on the remote control. All other outlets are
deactivated (except for the 4-way valve for 2 minutes if the heating mode
was previously selected.
The alarms/notices that are enabled are FS and SV.
The fan operating mode is not affected by the sensor temperature
readings.
It ispossible to select the air outlet louver oscillation mode at any
time.
3.7 Nighttime comfort mode
This mode may be selected on the remote control by pressing the
corresponding button (nighttime comfort button) and it may be used only
in combination with cooling and heating modes. In cooling mode, when
the nighttime mode is turned on, the internal fan is forced to run at low
speed and Tset isautomatically increased by 1°C(1.8°F) after 1 hour and
1°C(1.8°F) after 2 hours (after any activation of a function or subsequent
change to Tset). In this case, the external fan continues to turn based on
the TBE value (actual speed depends on the TBE regardless of the
nighttime mode condition).
In heating mode, when nighttime mode is activated, the internal fan isset
to low speed. The external fan is set to medium speed and Tset
automatically decreases by 2°C(3.6°F) after 1 hour and by 2°C(3.6°F)
after 2 more hours (starting from any function activation or subsequent
change to Tset). All subprograms in heating mode are activated. When
nighttime function is disabled, when Tset ischanged from the remote
control, when the unit isplaced into standby mode or when the power
supply isinterrupted, in all these situations the function timer isreset and
Tset isset to the most recent variable received from the remote control.
In this operating mode, allalarms/notices are enabled.
3.8 Auto restart function
After a power interruption, the unit behavior will depend on the value of
the parameter mch_id: ifthis parameter has bit2 equal to zero (reset) the
unit will restart and go into standby mode. Ifbit2 isequal to 1 (set) the
unit will restart resuming the prior operating mode (except for the auto
test function, in which case, after a blackout the device will be put into
standby). In any event, the compressor startup is delayed by 3 minutes
Upon each startup, a self-calibration of the air outlet louver is carried out.
3.9 Standby mode
This mode may be selected by pressing the corresponding button on the
remote control or by locally pressing the temporary button on the display
(in the latter case, the device goes into standby ifthe unit ison and is not
in any alarm state). In this state, allthe LEDs and allthe outlets are off
(from any prior operating mode), and alarms and notices are not
displayed.
By pressing the corresponding button on the remote control, allthe
previously selected functions are restored (operating mode, temperature
set point, fan speed, timer setting and state, airoutlet louver mode,
nighttime mode). Ifthe air outlet louver was set to a specific fixed
position, upon restart the louver returns to the same position. In any
event, the compressor startup is delayed by 3 minutes after the previous
shutdown. When the unit isplaced into standby mode, allthe timers of
the subroutines are reset (except for the compressor pause time) and a
self-calibration of the air outlet louver is carried out.

MAESTRO SMART 13
3.9.1 Air outlet louver control
It ispossible to select the fixed position or the automatic oscillation mode
using the corresponding button on the remote control (Oscillating louver
on/off button).
In automatic oscillation mode, the louver oscillates between two fixed
angles (A and B, minimum and maximum angle), the values of which are
defined as shown below.
Whenever in automatic oscillation mode, pressing on the button
(Oscillating louver on/off button) on the remote control closes the louver
in a specific position. In this situation, ifthe unit isplaced into standby
and then turned on again, the prior louver position is restored.
If the fixed position isselected, the angle of the predefined initial position
is the minimum angle (A, vertical airflow) or the maximum (B, horizontal
air flow) in cooling or heating mode, respectively, ifambient temperature
compensation is deactivated (bit 1 of the parameter mch_id is reset to
zero), and the opposite when ambient temperature compensation is
turned on (bit 1 of the parameter mch_id is set to 1).
3.10 Timer programming
Two independent programs are possible, and LED DL3 on the display
shows when one or both programs are enabled. For each timer (Timer 1
and Timer 2) it is possible to select the start time and a stop time in one
day, using the corresponding procedure on the remote control. The time
between these two settings is the ON period, and the time (within one
day) outside of these two settings corresponds to the OFF period.
Depending on the current internal clock time, two situations are possible:
–the current time is during the ON period: the unit operates
normally, and when the current time goes outside of the ON period
and enters the OFF period, the unit shuts down and only the yellow
LED stays on.
–the current time is during the OFF period: the unit (if it is on)
shuts off and only the yellow LED stays on. It is possible to modify
the operating settings using the remote control (in that case the unit
will start up with the last setting received), but the air conditioner
stays in standby as long as the internal clock is in the OFF period.
As soon as the internal clock enters the ON period, the air conditioner
starts to operate with the last settings received from the remote control.
By disabling the timer(s), the unit will return to its last operating state. The
board stores the time in EEPROM every 10 minutes, so therefore, if a
blackout occurs, the unit startup and shutdown times may be delayed for
up to 10 minutes (beyond the length of the blackout).
3.11 Air conditioner auto test mode
This function may be activated only when the unit isin standby mode, by
pressing and holding the (H)button for 5 seconds. Once the function is
enabled (indicated by a single beep), the display shows the code shown
below on the display for 5 seconds, based on the current board settings:
DESCRIPTION
DL1
(Green)
DL2
(Yellow)
DL3
(Green)
DL4
(Red)
Restart after blackout
(bit 2 of mch_id=1)
ON - - -
Standby after blackout
(bit 2 of mch_id=0)
OFF - - -
Troom correction enabled
(bit 1 of mch_id=1)
- ON OFF -
Troom correction disabled
(bit 1 of mch_id=0)
- OFF ON -
Heating mode enabled
(bit 0 of mch_id=1)
- - - ON
Heating mode disabled
(bit 0 if mch_id=11)
- - - OFF
After which, all the LEDs change to intermittent mode (1 sec. ON, 1 sec.
OFF, when the LEDs are on the buzzer sounds) for 10 seconds and
during this time period it is possible to invert the Troom correction status
(as well as the corresponding code and the value mch_id) by pressing the
H button on the display. (The unit in standard form is configured for
installation on a wall WITHOUT any ambient Troom temperature
correction set (T_camb=0), also see par. 5).
If the setting is changed, the flashing mode is stopped and the new
updated code is displayed for 5 seconds.
Then the following steps are carried out:
–the unit starts to operate in heating mode (if enabled, otherwise see
the next item) for 2 minutes (without delay the 4-way valve and the
compressor) at maximum speed (both fans), with the air louver in
automatic mode.
–the unit switches to cooling mode (deactivating the 4-way valve for 2
minutes (the condensate actuator ispowered on), keeping the fan at
high speed, and air louver in automatic mode.
–the compressor isstopped; both the fans switch to medium speed for
10 seconds. Alarms may now be displayed, but they will not block
operation.
–both fans switch to low speed, condensate disposal isturned on for
10 seconds and the louver oscillation is shut off. Alarms may nowbe
displayed, but they will not block operation.
–all outlets are shut off; the display again shows the code for 5
seconds based on current board settings.
The Auto Test subprogram operates independently of any alarm or
notification situations. While it is executed, no other command can be
received from the remote control except for the standby command.
steps/motor
steps/motor

14
3.12 Board auto test mode
This function is activated by pressing the H button on the display. Once
the function is enabled, at first a single beep is emitted, then on the
display all the LEDs turn on for 1 second. Then the following steps are
carried out:
–LED DL4 flashes if all the temperature sensor resistance values are
within the range of 9.3 KΩ– 10.7 KΩ, otherwise LED DL4 stays on
steady.
–LED DL3 flashes if the input from the pump switch is closed,
otherwise LED DL3 stays on steady.
–LED DL2 flashes if the input from the maximum condensate level
switch is closed, otherwise LED DL2 stays steady ON.
By pressing the H button on the display again, all the LEDs will turn on
and the board will carry out the following sequence:
–activate air recirculation outlet for 1 second.
–activate condensate disposal outlet actuator for 1 second.
–activate condensate disposal pump outlet for 1 second.
–activate 4-way valve for 1 second.
–activate compressor outlet for 1 second.
At this point, the board Auto Test function is terminated and this is
indicated by another single beep. The working mode stored in memory
before the last network interruption is then resumed.
3.13 Condensate draining and disposal
The condensate disposal pump is turned on only ifthe compressor ison
and the float switch (pump speed) isoff.
Asecond microswitch controlled by another float (high water level) starts
and stops the machine if itisopen for more than 60 seconds.
If the contacts of the pump microswitch are closed for more than one
minute, the shutoff valve is powered on (115V) and the water isdrained
for a maximum period of 3 minutes or until the switches are not open.
The shutoff valve isprogrammed to be normally closed when the
machine is off.
In heating mode (pump OFF), the electronic board provides voltage to the
shutoff valve to allow the water produced by the external coil to drain.

MAESTRO SMART 15
4 ELECTRICAL DIAGRAM
DESCRIPTION
MAESTRO SMART
9 HP
12 HP
Power supply voltage (min. 109 – max. 127)
AC volts
115
Phase
1
Hz
60

16
5 COOLING CIRCUIT
5.1 Cooling circuit with 4-way valve
5.2 Heating circuit with 4-way valve
DESCRIPTION
TYPE
QUANTITY
UNITS
Refrigerant gas charge (factory)
R-410 A
652 (1-7)
gr (lbs-oz)
NOTE: The refrigerant circuit issealed.
COOLING
HEATING
CAPILLARY
CAPILLARY
OUTSIDE
HOUSE
OUTSIDE
HOUSE

MAESTRO SMART 17
6 INSTALLATION
6.1 Included items
REF.
DESCRIPTION
PCS.
1
Maestro Smart unit
1
2
Remote control (incl. batteries)
1
3
Operating and maintenance manual and
guarantee
1
4
Adhesive insulating strip
2
5
External grid for air intake and outlet, including
small chains and grill installation kit
2
6
Internal flange
2
7
Condensate drain tube
1
8
Screws and anchors
1
9
Bracket for mounting to the wall
2
10
Sheet for wall sleeves
2
11
Template for drilling holes
1
12
Air purification filter (green)
1
13
Activated carbon filter (black)
1
6.2 Position
6.2.1 Installation at ceiling level
NOTE
The unit issuitable for installation in an upper wall position, with air
flowing downward, which is possible due to the 180° louver rotation.
After changing the air outlet louver,itisnecessary to configure the
electronics controlling the unit using the Auto Test Mode procedure
(See p. 13).
To optimize air distribution and comfort in the environment, the airflow
may be modified by changing the position of the air outlet louver and
setting a suitable correction to the ambient temperature T_camb
equivalent to +3°C(5.4°F)(it isnot possible to separate the two
operations).

18
6.2.2 Installation at floor level
NOTE
The unit is suitable for installation on the lower part of the wall with the
airflow going from low to high.
The unit comes standard in the configuration for installation at floor
level WITHOUT any ambient temperature setting correction.
6.3 Mounting
6.3.1 Drilling into the wall
6.3.2 Condensate drain
6.3.3 Condensate drain connection to the unit
INTERNAL DRAIN
TANK

MAESTRO SMART 19
6.3.4 Air intake 6.3.5 External grilles
6.3.6 Location of holes on the unit
CAUTION
RISK OF SUFFERING CUTS
Although great care was taken to reduce sharp
edges, use gloves or other hand protection when
handling the unit.
Failure to follow these instructions may cause
slight to moderate personal injury.

20
6.3 Setting up
CAUTION
HAZARD: EXCESSIVE WEIGHT
Two or more people are necessary during
installation of the air conditioner. Respect the
weight limits that can be lifted per person.
Failure to respect this precaution may back injury
or other injuries.
WARNING
RISK OF SUFFERING CUTS
Failure to follow these instructions may cause
slight to moderate personal injury.
NOTE
Copper refrigerant pipes in are NOT handles.
Do NOT use tubes to lift or move the unit.
6.5 Electrical connections
WARNING
RISK OF ELECTROCUTION AND/OR DEVICE
MALFUNCTION
Failure to heed this warning may cause personal
injuries or death and/or damage to the unit.
–The unit MUST BE connected to an effective
ground.
–Do not use an extension cord.
–Aluminum cabling in the building may be
contraindicated – consult a qualified electrician.
–When the unit is in STOP position, the electrical
controls are still powered on.
–Disconnect electrical power before performing
maintenance:
–disconnect the power cord (if applicable) from
the wall outlet.
–Place the unit power switch in OFF position.
This product must be connected using the power plug provided; it is
not possible to modify the pins to connect it directly to the electrical
network.
6.6 Turning the unit ON