fluidra ASTRALPOOL 78566 Service manual

The appliance is not intended for use by young children
3/08/2017
ECO RANGE
INVERTER HEAT PUMPS
Installation & Instruction manual
INSTALLATION AND OPERATING INSTRUCTIONS
I
INSTALLATION AND OPERATING INSTRUCTIONS
Eco Range
Inverter Heat Pumps

CONTENTS
1. Preface 1
2. Specifications 4
2.1 Performance Data of Swimming Pool Heat Pump Unit 4
2.2 Dimensions for Swimming Pool HeatPump Unit 6
3. Installation and Connection 7
3.1 Installation illustration 7
3.2 Swimming Pool Heat Pumps Location 8
3.3 How Close toYour Pool? 8
3.4 Swimming Pool HeatPumps Plumbing 9
3.5 Swimming Pool Heat Pumps Electrical Wiring 10
3.6 Initial Start-up ofthe Unit 10
4. Use and Operation Instruction 11
4.1 Interface display 11
4.2 Key and icon function instruction 11
4.3 Startup & shutdown 13
4.4 Interface drawin 13
4.5 Temperature setting 14
4.6 Clock setting 15
4.7 Silent setting 17
4.8 Keyboard lock 18
4.9 Fault interface 18
4.10 Parameter list and breakdown table 19
4.11 Main board 22
5. Maintenance and Inspection 24
6.Appendix 29
6.1 Cable specification 29
6.2 Comparison table of refrigerant saturation temperature 30

1
1. PREFACE
In order to provide our customers with quality, reliability and versatility, this product has
been made to strict production standards. This manual includes all thenecessary
information about installation, debugging, discharging and maintenance. Please read this
manual carefully before you open or maintain the unit. The manufacture of this product will
not be held responsible if someone is injured or the unit is damaged, as aresult of
improper installation, debugging, or unnecessary maintenance. It is vital that the
instructions within this manual are adhered to at all times. The unit must be installed by qualified
personnel.
The unit can only be repaired by qualified installer centre , personnel or an authorised dealer.
Maintenance and operation must be carried out according to the recomended time and
frequency, as stated in this manual.
Use genuine standard spare parts only.
Failure to comply with these recommendations will invalidate the warranty.
Swimming Pool Heat Pump Unit heats the swimming pool water and keeps the temperature
constant. For split type unit, The indoor unit can be Discretely hidden or semi-hidden to
suit a luxury house.
Our heat pump has following characteristics:
1 Durable
The heat exchanger is made of PVC & Titanium tube which can withstand prolonged
exposure to swimming pool water.
2 Installation flexibility
The unit can be installed outdoors.
3 Quiet operation
The unit comprises an efficient rotary/ scroll compressor and a low-noise fan motor, which
guarantees its quiet operation.
4 Advanced controlling
The unit includes micro-computer controlling, allowing all operation parameters to be
set. Operation status can be displayed on the LCD wire controller. Remote controller can be chosen
as future option.
WARNING
Do not use means to accelerate the defrosting process or to clean, Other
than those recimmended by the manufacturer.
The appliance shall be stored in a room without continuously
operating ignition sources (for example:open flames, an operating
gas appliance or an operating electric heater.)
Do not pierce or burn.
Be aware that refrigerants may not contain an odour,
Appliance shall be installed,operated and stored in a room with a floor area larger than 30 .
NOTE The manufacturer may provide other suitable examples or may provide additional
information about the refrigerant odour.

2
1. PREFACE
This appliance can be used by children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved. Children shall not play with
the appliance. Cleaning and user maintenance shall not be made by children without
supervision.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
The appliance shall be installed in accordance with national wiring regulations.
Do not operate your air conditioner in a wet room such as a bathroom or laundry room.
Before obtaining access to terminals, all supply circuits must be disconnected.
An all-pole disconnection device which has at least 3mm clearances in all pole
have a leakage current that may exceed 10mA residual current device (RCD) having
a rated residual operating current not exceeding 30mA disconnection must be
incorporated in the fixed wiring in accordance with the wiringrules
Do not use means to accelerate the defrosting process or to clean, other than those recommended
by the manufacturer
The appliance shall be stored in a room without continuously operating ignition sources (for example:
open flames, an operating gas appliance or an operating electric heater.)
Do not pierce or burn
Appliance shall be installed, operated and stored in a room with a floor area larger than 30 m2 Be
aware that refrigerants may not contain an odour.
The installation of pipe-work shall be kept to a minimum 30 m2
Spaces where refrigerant pipes shall be compliance with national gas regulations.
Servicing shall be performed only as recommended by the manufacturer.
The appliance shall be stored in a well-ventilated area where the room size corresponds to the room
area as specified for operation.
All working procedure that affets safety means shall only be carried by competent persons.
Transport of equipment containing flammable refrigerants
Compliance with the transport regulations
Marking of equipment using signs
Compliance with local regulations
Disposal of equipment using flammable refrigerants
Compliance with national regulations
Storage of equipment/appliances
The storage of equipment should be in accordance with the manufacturer's instructions. Storage
of packed (unsold) equipment
Storage package protection should be constructed such that mechanical damage to the
equipment inside the package will not cause a leak of the refrigerant charge.
The maximum number of pieces of equipment permitted to be stored together will be
determined by local regulations.

1. PREFACE
Caution & Warning
1. The unit can only be repaired by qualified installer centre personnel or an authorised
dealer. for Europe market
2. This appliance is not intended for use by persons (including children) with reduced physical
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety. for Europe market
Children should be supervised to ensure that they do not play with the appliance.
3. Please make sure that the unit and power connection have good earthing, otherwise may
cause electrical shock.
4. If the supply cord is damaged, it must be replaced by the manufacturer or our service agent
or similarly qualified person in order to avoid ahazard.
5. Directive 2002/96/EC (WEEE):
The symbol depicting a crossed-out waste bin that is underneath the appliance indicates that this
product, at the end of its useful life, must be handled separately from domestic waste, must be
taken to a recycling centre for electric and electronic devices or handed back to the dealer when
purchasing an equivalent appliance.
6. Directive 2002/95/EC (RoHs): This product is compliant with directive 2002/95/EC (RoHs)
concerning restrictions for the use of harmful substances in electric and electronic devices.
7. The unit CANNOT be installed near the flammable gas.Once there isany leakage of the gas
, fire can be occur.
8. Make sure that there is circuit breaker for the unit, lack of circuit breaker can lead to
electrical shock orfire.
9. The heat pump located inside the unit is equipped with an over-load protection system. It
does not allow for the unit to start for at least 3 minutes from a previous stoppage.
10.The unit can only be repaired by the qualified personnel of an installer center or an
authorized dealer. for North America market
11. Installation must be performed in accordance with the NEC/CEC by authorized person only.
for North America market
12. USE SUPPLY WIRES SUITABLE FOR75 .
13. Caution: Single wall heat exchanger, not suitable for potable waterconnection.
3

4
2.SPECIFICATION
2.1 Performance data of Swimming Pool Heat Pump Unit
*** REFRIGERANT : R32
UNIT
78566
78567
Heating capacity
(27/24.3
kW
1.4-6.8
1.9-8.0
Btu/h
4760-23120
6460-27200
Heating Power Input
kW
0.14-1.51
0.19-1.82
COP
10.0-4.5
10.00-4.4
Heating capacity
(15/12
kW
1.1-5.2
1.4-6.3
Btu/h
3740-17680
4760-21420
Heating Power Input
kW
0.21-1.24
0.28-1.5
COP
5.2-4.2
5.2-4.2
Heating capacity
(10/6.8
kW
0.9-4.0
1.2-5.5
Btu/h
3060-13600
4080-18700
Heating Power Input
kW
0.2-1.25
0.27-1.72
COP
4.5-3.2
4.5-3.2
Power Supply
220-240V /50Hz
220-240V /50Hz
Compressor Quantity
1
1
Compressor
rotary
rotary
Fan Number
1
1
Noise
dB(A)
38-50
39-51
Water Connection
mm
48.3
48.3
Water Flow Volume
m3/h
2.3
2.7
Water Pressure Drop(max)
kPa
2
3
Unit Net Dimensions(L/W/H)
mm
See the drawing of the units
Unit Ship Dimensions(L/W/H)
mm
See package lable
Net Weight
kg
see nameplate
Shipping Weight
kg
see package label
Heating: Outdoor air temp: 27 /24.3 , Inlet water temp:26 Outdoor
air temp: 15 /12 , Inlet water temp:26 Outdoor air temp:
10 /6.8 , Inlet water temp:26
Operating range:
Ambient temperature:-5 43
Water temperature:9-40

5
2.SPECIFICATION
2.1 Performance data of Swimming Pool Heat Pump Unit
*** REFRIGERANT : R32
UNIT
78568
Heating capacity
(27/24.3
kW
2.4-10.9
Btu/h
8160-37060
Heating Power Input
kW
0.24-2.37
COP
10.0-4.6
Heating capacity
(15/12
kW
1.6-8.4
Btu/h
5440-28560
Heating Power Input
kW
0.31-1.95
COP
5.1-4.3
Heating capacity
(10/6.8
kW
1.6-7.2
Btu/h
5440-24480
Heating Power Input
kW
0.33-2.18
COP
4.8-3.3
Power Supply
220-240V /50Hz
Compressor Quantity
1
Compressor
rotary
Fan Number
1
Noise
dB(A)
42-53
Water Connection
mm
48.3
Water Flow Volume
m3/h
3.5
Water Pressure Drop(max)
kPa
4
Unit Net Dimensions(L/W/H)
mm
See the drawing of the units
Unit Ship Dimensions(L/W/H)
mm
See package lable
Net Weight
kg
see nameplate
Shipping Weight
kg
see package label
Heating: Outdoor air temp: 27 /24.3 , Inlet water temp:26 Outdoor
air temp: 15 /12 , Inlet water temp:26 Outdoor air temp:
10 /6.8 , Inlet water temp:26
Operating range:
Ambient temperature:-5 43
Water temperature:9-40

6
545
2.SPECIFICATION
2.2 The dimensions for Swimming Pool Heat Pump Unit
UNIT:78566/78567/78568 unit mm
1000
Water outlet
48.3
Water inlet
48.3
418
350
97
605

7
3.INSTALLATION AND CONNECTION
3.1 Installation illustration
Installation items:
The factory only provides the main unit and the water unit; the other items in the illustration are
necessary spare parts for the water system ,that provided by users or the installer.
Attention:
Please follow these steps when using for the first time
1.Open valve and charge water.
2. Make sure that the pump and the water-in pipe have been filled with water.
3.Close the valve and start the unit.
ATTN: It is necessary that the water-in pipe is higher than the pool surface.
The schematic diagram is for reference only. Please check the water inlet/outlet label on the
heat pump whileplumbing installation.
The schematic diagram is for reference only. Please check the water inlet/outlet label on the
heat pump whileplumbing installation.
The controller is mounted on the wall
IMPORTANT NOTE:
A WATER BY-PASS MUST BE PLUMBED TO REGULATE WATER FLOW TO HEAT PUMP. FAILURE
TO DO SO MAY RESULT IN POOR EFFICIENCY AND REDUCED HEATING OUTPUT.

3. INSTALLATION AND CONNECTION
3.2 Swimming Pool Heat Pumps Location
The unit will perform well in any outdoor location provided that the following three factors are
presented:
1. Fresh Air - 2. Electricity - 3. Pool filter piping
The unit may be installed virtually anywhere outdoors. For indoor pools please consult the supplier.
Unlike a gas heater, it has no draft or pilot light problem in a windy area.
DO NOT place the unit in an enclosed area with a limited air volume, where the units
discharge air will be re-circulated.
DO NOT place the unit to shrubs which can block air inlet. These locations deny the unit of a
continuous source of fresh air which reduces it efficiency and may prevent adequate heat
delivery.
3.3 How Close To Your Pool?
Normally, the pool heat pump is installed within 7.5 metres of the pool. The longer the
distance from the pool, the greater the heat loss from the piping. For the most part ,the piping
is buried. Therefore, the heat loss is minimal for runs of up to15 meters(15 meters to and from
the pump = 30 meters total), unless the ground is wet or the water table is high. A very rough
estimate of heat loss per 30 meters is 0.6 kW-hour,(2000BTU) for every 5 difference in
temperature between the pool water and the ground surrounding the pipe, which translates to about
3% to 5% increase in run time.
8
Air inlet
Air outlet
500mm

3.INSTALLATION AND CONNECTION
3.4 Swimming Pool Heat Pumps Plumbing
The Swimming Pool Heat Pumps exclusive rated flow titanium heat exchanger requires no
special plumbing arrangements except bypass(please set the flow rate according to the
nameplate). The water pressure drop is less than 10kPa at max. Flow rate. Since there is no
residual heat or flame Temperatures, The unit does not need copper heat sink piping. PVC pipe
can be run straight into the unit.
Location: Connect the unit in the pool pump discharge (return) line downstream of all filter and
pool pumps, and upstream of any chlorinators, ozonators or chemical pumps.
Standard model have slip glue fittings which accept 32mm or 50 mm PVC pipe for connection to
the pool or spa filtration piping. By using a 50 NB to 40NB you can plumb 40NB
Give serious consideration to adding a quick coupler fitting at the unit inlet and outlet to allow easy
draining of unit for winterizing and to provide easier access should servicing be required.
To pool
PVC COUPLER
RECOMMENDED(Provided)
From pump
CONDENSATION
DRAIN
BARB FTG
Condensation: Since the Heat pump cools down the air about 4 -5 , water may condense on the
fins of the horseshoe shaped evaporator. If the relative humidity is very high, this could be as
much as several litres an hour. The water will run down the fins into the basepan and drain out
through the barbed plastic condensation drain fitting on the side of the basepan. This fitting is
designed to accept 20mm clear vinyl tubing which can be pushed on by hand and run to a
suitable drain. It is easy to mistake the condensation for a water leak inside the unit.
NB: Aquick way to verify that the water is condensation is to shut off the unit and keep the pool
pump running. If the water stops running out of the basepan, it is condensation. AN EVEN
QUICKER WAY IS to TEST THE DRAIN WATER FOR CHLORINE - if the is no chlorine
present, then it's condensation.
IMPORTANT NOTE:
A WATER BY-PASS MUST BE PLUMBED TO REGULATE WATER FLOW TO HEAT PUMP. FAILURE
TO DO SO MAY RESULT IN POOR EFFICIENCY AND REDUCED HEATING OUTPUT.
9

10
3.INSTALLATION ANDCONNECTION
3.5 Swimming Pool Heat Pumps ElectricalWiring
NOTE: Although the unit heat exchanger is electrically isolated from the rest of the unit, it
simply prevents the flow of electricity to or from the pool water. Grounding the unit is still
required to protect you against short circuits inside the unit. Bonding is also required.
The unit has a separate molded-in junction box with a standard electrical conduit nipple
already in place. Just remove the screws and the front panel, feed your supply lines in
through the conduit nipple and wire-nut the electric supply wires to the three connections
already in the junction box (four connections if three phase). To complete electrical hookup, connect
Heat Pump by electrical conduit, UF cable or other suitable means as specified (as permitted by local
electrical authorities) to a dedicated AC power supply branch circuit
equipped with the proper circuit breaker, disconnect or time delay fuse protection.
Disconnect - A disconnect means (circuit breaker , fused or un-fused switch) should be located
within sight of and readily accessible from the unit, This is common practice on
commercial and residential air conditioners and heat pumps. It prevents remotely-energizing
unattended equipment and permits turning off power at the unit while the unit is being
serviced.
3.6 Initial startup of the Unit
NOTE- In order for the unit to heat the pool or spa, the filter pump must be running to
circulate water through the heat exchanger.
Start up Procedure - After installation is completed, you should follow these steps:
1. Turn on your filter pump. Check for water leaks andverify flow to and from the pool.
2. Turn on the electrical power supply to the unit, then press the key ON/OFF of wire
controller, It should start in severalseconds.
3. After running a few minutes make sure the air leaving the top(side) of the unit is
cooler(Between 5-10 )
4. With theunit operating turn the filter pump off. The unit should also turn off automatically,
5. Allow the unit and pool pump to run 24 hours per day until desired pool water temperature
is reached. When the water-in temperature reaches this setting, the unit will slow down for a
period of time, if the temperature is maintained for 45 minutes the unit will turn off. The unit
will now automatically restart (as long as your pool pump is running)when the pool
temperature drops more than 0.2 below set temperature.
Time Delay- The unit is equipped with a 3 minute built-in solid state restart delay included to protect
control circuit components and to eliminate restart cycling and contactor chatter.
This time delay will automatically restart the unit approximately 3 minutes after each control circuit
interruption. Even a brief power interruption will activate the solid state 3 minute
restart delay and prevent the unit from starting until the 5 minute countdown is completed.

11
4. Use and OperationInstruction
4.1. Interface display
4.2. Key and icon functioninstruction
2.1 Key function instruction
Key symbols
Designation
Function
Mute key
Under the heating mode or heating mode under the
automatic mode, the mute key operation is effective and used
to enter and exit the mute mode with one click.
Mode key
It is used to switch the unit mode, temperature setting, and
parameter setting.
On-off key
It is used to carry out startup & shutdown, cancel current
operation,and return to the last level of operation.
Up key
It is used to page up, and increase variable value.
Down key
It is used to page down, and decrease variable value.
Clock key
It is used as user clock, and to carry out timing setting.

12
4.Use andOperation Instruction
2.2.Icon function instruction
,
Icon symbol
Designation
Function
Cooling
symbol
It will display during cooling (there is no limit to startup &
shutdown, and it is optional when the unit is cooling-only unit
or heating-and-cooling unit).
Heating
symbol
It will display during heating (there is no limit to startup &
shutdown, and it is optional when the unit is heating-only unit
or heating-and-cooling unit).
Automatic
symbol
It will display under the automatic mode (there is no limit to
startup & shutdown, and it is optional when the unit is heating- and-
cooling unit).
Defrosting
symbol
It will display in the defrosting process of the unit.
Compressor
symbol
It will display when compressor is started.
Water pump
symbol
It will display when water pump is started.
Fan symbol
It will display when fan is started.
Mute symbol
When the timing mute function is started, it keeps bright for a
long time. When it is in mute state, it will flash. Or else, it is off.
Timing symbol
It will display after the user sets the timing, and multiple timing
intervals can be set .
Water outlet
symbol
When the axillary display area displays the water outlet
temperature, the light is on.
Water inlet
symbol
When the main display area displays the water inlet temperature
the light is on.
Locking key
symbol
When the keyboard is locked, it is on.
Fault symbol
In case of unit fault, it is on.
Wireless signal
symbol
When the unit is connected to WIFI module, it will display
according to the strength of WIFI signal.
Degrees Celsius
symbol
When main display area or auxiliary display area displays
degrees Celsius, it is on.
Degrees Fahrenheit
symbol
When main display area or auxiliary display area displays
degrees Fahrenheit, it is on.
Setting symbol
When the parameter is adjustable, it is on
Second symbol
When main display area displays second digit, it is on.
Minute symbol
When main display area displays minute digit, it is on.
Hour symbol
When main display area displays hour digit, it is on.
Pressure
symbol
When main display area displays pressure, it is on.
Flow symbol
When main display area displays flow, it is on.

13
When there is no operation
within 1 minute, it will display
with half screen off
When there is no operation
within 15 minutes, it will
display with full screen off
4.Use andOperation Instruction
4.3. Startup & shutdown
Notes:
Startup & shutdown operation can only be conducted in the main interface.
When it displays with half screen off or full screen off, click any key for returning to ON/OFF main
interface.
When the unit is started under the control of wire controller, if using the emergency switch to shut
down, the wire controller will display as follows:
Operations are the same as under ON/OFF main interface.
4.4. Mode switch
Under the main interface, Short press" "to switch the unit among heating " ", cooling " "
and automatic mode " ".
Keep long press of " "for 0.5 s
to enter ON/OFF interface

14
Defrosting state
4. Use and OperationInstruction
Operation descriptions:
1). Mode switch operation can only be conducted inthe main interface.
2). When the unit is under the defrosting state, the defrosting symbol is on,with the display
interface as follows:
Notes:
1).After completing the defrosting, the unit will be automatically switched to the heating/
automatic mode (keeping consistent with the mode before defrosting).
During the defrosting, mode switch is available. And when switching the mode, the unit won t work
under a new mode until defrosting is completed.
4.5. Temperature setting
Notes: Under the temperature setting interface, if short press " ", the system will return to
the main interface without any changes saved; If there is no operation for 5 s or short press
" ", thecurrent mode willbe saved, andreturn to themain interface.
Automatic mode
Short press" " for to switch the
mode circularly, after no operation
for 2s, the current mode will be saved.
Press " " or " " for increasing
or decreasing target temperature.
Heating mode
Cooling mode

15
"
Flashing
Minute digit flashing
Flashing
Hour digit
flashing
Press " " or " "
to adjust minute digit
Press " " to
save the settings
and skip to the
minute digitsetting
Press " " or " "
to adjust hourdigit
System time setting
interface
Short press " "
Long press " "
for 2 s to enter into
the system times
setting interface
Timer setting interface
Flashing
Flashing
Stort press " "
to enter into
the timer setting
interface
Short press" or
" " to circularly
display among
timer ON1, OFF1,
ON2 and OFF2
4.Use andOperation Instruction
4.6. Clock setting
6.1 System time setting
Notes: Under the clock setting interface, if there is no operation for 20 s, the system will
automatically memorize use s settings, and return to the main interface; if short press " "
during any operating steps, the changes will not be saved and return to the main interface.
6.2 Setting and cancelling the Timer ON/OFFfunction
6.2.1 The wire controller can set up a two-stage timing switch: Timer ON1~ OFF1;Timer ON2~OFF2.
6.2.2 Select "
On1
" , "
OFF1
" , "
On2
" or "
OFF2
" timer setting interface:
Press " " to
save, and return to
the main interface

16
"
Flashing
Minute digit flashing
Flashing
Hour digit
flashing
Press " " or " "
to adjust minute digit
Press " " to
save the settings
and skip to the
minute digitsetting
Press " " or " "
to adjust hourdigit
System time setting
interface
Short press " "
Long press " "
for 2 s to enter into
the system times
setting interface
Timer setting interface
Flashing
Flashing
Stort press " "
to enter into
the timer setting
interface
Short press" or
" " to circularly
display among
timer ON1, OFF1,
ON2 and OFF2
4.Use andOperation Instruction
4.6. Clock setting
6.1 System time setting
Notes: Under the clock setting interface, if there is no operation for 20 s, the system will
automatically memorize use s settings, and return to the main interface; if short press " "
during any operating steps, the changes will not be saved and return to the main interface.
6.2 Setting and cancelling the Timer ON/OFFfunction
6.2.1 The wire controller can set up a two-stage timing switch: Timer ON1~ OFF1;Timer ON2~OFF2.
6.2.2 Select "
On1
" , "
OFF1
" , "
On2
" or "
OFF2
" timer setting interface:
Press " " to
save, and return to
the main interface

17
Short press " "
to set hour digit
Press " " to
save the settings
and skip to the
minute digitsetting
ON2
OFF
2
1 OFF1 OFF
1 OFF1 OFF
1 OFF1
1 OFF1
OFF
Flashing
(hour or minute digit)
Flashing
Short press " " to save
the change and return to
the main interface
Flashing
Short press " "
Short press " "
to cancel the timer
settings
4.Use andOperation Instruction
6.2.3 Setting the Timer ON/OFFfunction
While enter into the " ON "," ", " ON2 " or " 2 " timer setting interface, set the Timer ON/OFF asbelow:
* Take ON1 forexample:
6.2.4 Cancelling the Timer ON/OFFfunction
1) Select " ON "," ", " ON2 " or " 2 " timer setting interface refers to 6.2.1, cancel the Timer ON/OFF as below:
* Take ON1 for example:
2) To cancel the first-stage timingswitch: cancel both " ON " and " ";
To cancelthesecond-stagetimingswitch: cancelboth " ON2 " and " " ;
To cancelthetwostagetiming switch:cancelall " ON "," ", " " and " 2 " .
Note: Under the Timer ON/OFF setting interface, if the timing symbol and entire time digits flash at
the same time, click " " to return to the maininterface;
OFF 1
ON 2
Displays Timer ON function on
Displays the second-stage timing switch on
Displays the first-stage timing switch on
Dsiplays Timer OFF function on
Flashing
Flashing
Hour digit flashing
Minute digit flashing
Flashing
Short press " " to save
the settings and return to
the main interface
Short press " "
to save the settings
Short press " "
or " " to adjustt
minute digit
Flashing
Press " "or " "
to adjust hour
digit