Black Diamond Equipment AquaCore User manual

AquaCore
The Next Generation in Super Energy
Efficient Hot Water Heating
Designed and manufactured in New Zealand by Black Diamond Technologies
User Manual

CONTENTS
Features
Features .................................................................................................................................................. Page 1
Smart Operation ...................................................................................................................................... Page 2
Mandatory Legionella Control ................................................................................................................ Page 2
Low Usage Conditions ............................................................................................................................ Page 2
Modes ...................................................................................................................................................... Page 2
Interface
Control Panel ............................................................................................................................................ Page 3
Power Button Features ............................................................................................................................. Page 3
Internet Connection .................................................................................................................................. Page 3
Menu Structure ......................................................................................................................................... Page 4
Display Screens ................................................................................................................................. Pages 5–8
Trouble Shooting
LED Functions ......................................................................................................................................... Page 9
Troubleshooting ...................................................................................................................................... Page 9
Water Leaks ............................................................................................................................................ Page 9
Water Storage Cylinder Requirements ................................................................................................... Page 9
Fault Codes and Descriptions .............................................................................................................. Page 11
Safety Warnings ............................................................................................................................... Page 12–14
Specications ........................................................................................................................................ Page 15

AQUACORE – User Manual I 1
AQUACORE | Features
AquaCore Features
The Black Diamond AquaCore has many user-friendly
intuitive functions and features including:
Starting Features:
• Manual Power On/Standby
• Smart Meter Interface
• 7 Day Programmable Timer
• Ripple Feed Power Management Compatible
• Automatic Reheat
Automatic switching to hot water cylinder’s electric
element under fault conditions.
Highly efcient defrost control.
Low standby power consumption.
Internal power usage meter.
Battery backup internal clock.
Audible Alarm in following situations:
• Over current
• Insufficient heating
• Over temperature
• No water
• Water leakage
• Refrigerant leakage
• Requires Service Life Servicing
- Heat exchanger clean
- Water pump replacement
PLEASE NOTE:
The AquaCore must be installed
by persons qualied in the trade
(Plumbing, Electrical, Refrigeration and
any other qualications required by
regulation, standards or law), and must
comply with all applicable standards,
codes and regulations in force in the
country of installation.

2IAQUACORE – User Manual
Smart Operation
The Black Diamond AquaCore has been designed to
maximise performance and cost savings, while utilising
optimised control.
When not heating water, the power is switched off to the
outdoor unit, lowering standby power usage and increasing
efficiency. The system can be further optimised by choosing
the times of the day that it can operate. The higher the
ambient temperature, the more efficient the system
operates. Colder water at the input side also increases
the efficiency.
Mandatory Legionella Control
Each week the AquaCore will complete a legionella control
operation. The AquaCore will carry out a deep disinfect
cycle including activating the electric element of the hot
water cylinder as required to ensure tank temperature is
above 60°C for a period no less than 1.5hrs.
Low Usage Conditions
Where the system has not been activated within 18 hours, a
new heating cycle will be completed. This is carried out at 1pm
on the second day since last being active. This ensures the
tank water is safe even after long periods of not being used.
PLEASE NOTE:
Cylinder thermostat must be set to 60°C.
PLEASE NOTE:
The system will not automatically restart
if the Restart Sensor has not dropped by
20°C from the last heating cycle.
Modes
The Black Diamond AquaCore can be set in one of three
modes.
Normal [Norm] – 40°C return temperature
When operating in Normal Mode, the AquaCore unit continues
to heat the water in the Water Storage Cylinder until the return
water temperature reaches 40°C. This ensures 90% of the user’s
Water Storage Cylinder is over 60°C.
Economic [Econ] – 40°C return temperature
When operating in Economy Mode the AquaCore heats the
water over a longer period than Normal Mode, using less
energy (ideal for solar connections).
Disinfect [Disin] – 50°C return temperature
Disinfect Mode ensures that the bottom of the tank reaches
above 50°C. This mode is recommended for poor quality,
non-town supplied water, such as rain water and untreated
river water.
Unit Activation
The AquaCore System is either turned on by the user or it will
automatically power on from Standby when:
• The power is initially connected or recovers from a
power outage.
• The water tank temperature drops by 20°C.
• The power is turned on by a traditional ripple power relay.
• The unit has been turned on by one of the 7 timers.
• The system has not been in a heating cycle for 1.5
days.
Unit Standby
The system will automatically switch to Standby (STBY) when:
• The return water temperature reaches 40°C in Normal
Mode and ECO Mode or when it reaches 50°C in
Disinfect Mode.
• The unit has been turned off by one of the 7 timers.
• The unit has been manually turned off.

AQUACORE – User Manual I 3
Control Panel
The AquaCore Controller is an easy to use 4 button control
panel with a backlit LED display which automatically lights
up when a button is pressed. Once installed the unit should
not require adjustment outside use of the 7 Day Timer.
The back lit display will stay illuminated for 5 minutes from
the last button press.
Power Button Features
On/Standby
• Press the power button to turn the system on.
Off/Holiday Mode
• Hold down the power button for 4 seconds to turn
the system off / Holiday Mode.
Cylinder Electric Element On/Off
• Holding down the power button for 10 seconds will
turn the cylinder’s electric element on/off.
Letter Name Function / Meaning
AScreen 40 character screen for display
of information
BPower/back
Power and cancel button, see
section ‘Power Button Features’
for more details
CMenu/Select Used to select items and
menus advance
DDown Scroll down key
EUp Scroll up key
FPower LED Indicates that the unit is on
GHeat LED Indicates that the unit is
currently in a heating cycle
HFault LED
Indicates a fault with the system,
see troubleshooting section for
more details
IDefrost LED Indicates the outdoor unit is
currently in Defrost Mode
POWER HEAT
MENU
SELECT
FA U LT DEFROST
Mode ECON Ver-4.27
Release Aug 20 2022
Mode ECON Ver-4.27
Release Aug 2 222
A B
F
C
G
D
H
E
I
AQUACORE | Interface
Internet Connection
The AquaCore can be connected to the internet via the
onboard ethernet port, this provides the following benefits;
• Automatic firmware updates - updates to ensure
the AquaCore is always using the latest software
enhancing performance and user experience
• Clock Sync - internal clock synchronises to ensure
minute accurate time for accurate timer control
• Wi-Fi Control - control the AquaCore functions remotely
and receive updates on faults through the Mitsubishi
Electric Wi-Fi Control App

4IAQUACORE – User Manual
To navigate through the menu structure described below, use the MENU
SELECT button to open the menu, navigate to the desired
screen or submenu with the up and down buttons and press the MENU
SELECT button to adjust the selected parameter or enter
the submenu.
STBY 0000
20/08/22 12:55 ECON0
STBY 
2/8/22 12:55 ECON
MENUS
ESC SEL DOWN UP
MENUS
ESC SEL DOWN UP
Mode NORM r3208b
Release MAR 11 2022
Mode NORM r328b
Release MAR 11 222
Mode ECON r3208b
Model AP25
Mode ECON r328b
Model AP25
MAC: 801A2B3C4D5E
IP: 123.45.123.123
MAC: 81A2B3C4D5E
IP: 123.45.123.123
TIMERS
MENU
TIMERS
MENU
DATE TIME SUMMER
MENU
DATE TIME SUMMER
MENU
SERVICE DIAGNOSTICS
MENU
SERVICE DIAGNOSTICS
MENU
WATER METERING
MENU
WATER METERING
MENU
MENUS
EXIT
MENUS
EXIT
T1 On 07:00 DAY
ON Off 17:00
T1 On 7: DAY
ON Off 17:
TIME ::
DATE 11 MAR 2022 FRI
TIME ::
DATE 11 MAR 2022 FRI
SETPOINT 62 CSETPOINT 62 C
T2 On 07:00 DAY
ON Off 17:00
T2 On 7: DAY
ON Off 17:
SUM LST SUN SEP 0200
WIN 1ST SUN APR 0300
SUM LST SUN SEP 2
WIN 1ST SUN APR 3
ON MAC: 801212121212
REM ID: 1234567891
ON MAC: 81212121212
REM ID: 1234567891
T6 On 07:00 DAY
ON Off 17:00
T6 On 7: DAY
ON Off 17:
T3 On 07:00 DAY
ON Off 17:00
T3 On 7: DAY
ON Off 17:
TIMEZONE OFFSET
UTC +12:00
TIMEZONE OFFSET
UTC +12:
SERVICE DIAGNOSTICS
EXIT
SERVICE DIAGNOSTICS
EXIT
OTHER NON SPECIFIC
DIAGNOSTIC MENUS
OTHER NON SPECIFIC
DIAGNOSTIC MENUS
T7 On 07:00 DAY
ON Off 17:00
T7 On 7: DAY
ON Off 17:
T4 On 07:00 DAY
ON Off 17:00
T4 On 7: DAY
ON Off 17:
DATE TIME SUMMER
EXIT
DATE TIME SUMMER
EXIT
TIMERS
EXIT
TIMERS
EXIT
T5 On 07:00 DAY
ON Off 17:00
T5 On 7: DAY
ON Off 17:
Auto cycles
between
Menu Structure

AQUACORE – User Manual I 5
Display Screens
Standby Screen
The standby screen displays the following information:
• Current status
• Timer
• Time / date
• Mode
• Timers set
• Operation sequence (for technical purposes only)
On the screen below, the top left letters, in this case “STBY”
represent the current status of the unit, this can be any of
the following options:
• STBY
• Turned Off
• Current water set point
If one of the 7 timers is set, the display will indicate this. In
the example below “TMR1247” indicates that timers 1, 2, 4
and 7 are set. Should the unit be operating due to one of
the set timers, the timer will flash at 1 second intervals to
indicate that it is in timer operation.
To power on the AquaCore press the Power button to
turn on.
The main LED screen and the green power LED will
illuminate to indicate the unit is on.
Set Mode Screen
As described previously there are three modes the AquaCore
can be set to: Economic (ECON), Disinfect (DISIN) and
Normal (NORM).
To change the AquaCore operating mode, use the
following steps:
• Press the MENU
SELECT button.
• Scroll through to the Set Mode Screen by pressing
Down or Up.
• The image below depicts the screen which should
now be seen (Version number and date will differ).
• Press the button.
• The mode description (in this case ECON) will now
flash indicating it is ready to be changed.
• Scroll to the desired mode by pressing the
Down or Up buttons.
• Once the desired mode is showing, confirm by
pressing . The mode description will stop flashing
to indicate this has been confirmed.
• The outdoor model number then flashes.
IP/MAC Address Screen
The IP/MAC address contains network information of the
AquaCore.
MENU
SELECT
MENU
SELECT
STBY 0000
20/08/22 12:55 ECON0
STBY 
2/8/22 12:55 ECON
STBY TMR1247 1403
20/08/22 12:55 ECON0
STBY TMR1247 143
2/8/22 12:55 ECON
Mode ECON Ver-4.27
Release Aug 20 2022
Mode ECON Ver-4.27
Release Aug 2 222
MAC : 801A2B3C4D5E
IP: 123.45.123.123
MAC : 81A2B3C4D5E
IP: 123.45.123.123
Mode NORM r3208b
Release MAR 11 2022
Mode NORM r328b
Release MAR 11 222
STBY 0000
20/08/22 12:55 ECON0
STBY 
2/8/22 12:55 ECON

6IAQUACORE – User Manual
Time/Date Screen
Please use the following steps to set the time and date:
• Press the MENU
SELECT button.
• Scroll to the Time Date Summer Menu (see below)
by pressing the Down or Up buttons.
• Press MENU
SELECT to enter the Date Time Summer Menu.
• Scroll to the Time/Date Screen by pressing the
Down or Up buttons.
• Press MENU
SELECT – the ‘time’ will begin flashing to indicate
it is ready to be changed.
• Press MENU
SELECT to proceed to setting the hour and adjust
Down or Up to the correct hour.
• Press MENU
SELECT to proceed to setting the minutes and
adjust Down or Up to the correct minutes.
• Press MENU
SELECT to proceed to setting the month and
adjust Down or Up to the correct month.
Summer/Winter Time Set Screen
To set the daylight saving start and stop days, please use
the following steps:
• Scroll to the Date Time Summer Menu (see below)
by pressing the Down or Up buttons.
• Press MENU
SELECT to enter the Time/Date Summer Menu.
• Scroll to the Summer/Winter Time Screen by
pressing Down or Up.
• Press MENU
SELECT – the ‘Week’ description indicated will
begin flashing to indicate it is ready to be changed.
The following key denotes the week association:
– 1ST = 1st Sunday, 2ND = 2nd Sunday, 3RD = 3rd
Sunday, 4TH = 4th Sunday, LST = Last Sunday.
• Use Down or Up to adjust.
• Press MENU
SELECT to proceed to setting the day and adjust
Down or Up to the desired day.
• Press MENU
SELECT to proceed to setting the month and adjust
Down or Up to the desired month.
• Press MENU
SELECT to proceed to setting the time and adjust
Down or Up to the desired time.
• Press MENU
SELECT to proceed to setting the winter time week,
day, month and time using the same steps as above.
• Finally press MENU
SELECT to finish the Summer/Winter Time
setting.
Time Zone Screen
To set the current time zone, please use the following steps:
Please note, by default this is set to +12hrs for New
Zealand time.
• Press the MENU
SELECT button.
• Scroll to the Date Time Summer Menu (see below)
by pressing the Down or Up buttons.
• Press MENU
SELECT to enter the Date Time Summer Menu.
• Scroll to the GMT OFFSET Screen by pressing
Down or Up.
• Press MENU
SELECT – the “Offset” will begin flashing.
• Use Down or Up to adjust.
• Finally press MENU
SELECT to finish the Time zone setting.
Temperature Selection/Setpoint Adjust Screen
The AquaCore System is set to 62°C as factory standard.
However the set temperature adjustment range is from
58–63°C.
Sum LST SUN SEP 0200
Win 1ST SUN APR 0300
Sum LST SUN SEP 2
Win 1ST SUN APR 3
TIMEZONE OFFSET
UTC +12:00
TIMEZONE OFFSET
UTC +12:
SETPOINT 62°CSETPOINT 62°C
TIME DATE SUMMER
MENU
TIME DATE SUMMER
MENU
TIME 00:00:00
DATE 11 Mar 2022 FRI
TIME ::
DATE 11 Mar 222 FRI
TIME DATE SUMMER
MENU
TIME DATE SUMMER
MENU

AQUACORE – User Manual I 7
To change the set temperature, use the following steps:
• Press the MENU
SELECT button.
– Scroll to the Service Diagnostics Menu (see below)
by pressing the Down or Up buttons.
• Press MENU
SELECT to enter the Service Diagnostics Menu.
• Scroll to the Setpoint Screen by by pressing the
Down or Up buttons.
• Press the MENU
SELECT button – the indicated Set Temp
will flash.
• The temperature can now be adjusted with the
Down or Up buttons.
• Once the desired set temp is showing, confirm by
pressing MENU
SELECT – the Set Temp will stop flashing to
indicate this has been confirmed.
Network Control Screen
The Network Control Screen is used in combination with
the Wi-Fi Control app to provide Wi-Fi Control for the
AquaCore. Wi-Fi control is on by default.
• Press the MENU
SELECT button.
• Scroll to the Service Diagnostics Menu (see below)
by pressing the Down or Up buttons.
• Press MENU
SELECT to enter the Service Diagnostics Menu.
• Scroll to the Network Control Screen by pressing
the Down or Up buttons.
• Press MENU
SELECT to adjust settings.
• Use Down or Up to scroll to desired option.
• Press MENU
SELECT to confirm change.
Timer Screens (T1–7)
The AquaCore System has a total of 7 timers. Each timer
can be set in one of four ways:
1. As an Operational Window Timer
(The system can only operate during a set period of time.
The unit is forced to complete an initial heating cycle, If the unit
is running at the off time it will complete the cycle and shut off.)
Example shows an operation window timer set to allow the
unit to come on from 7am and shut off at 5pm every day.
2. As a Non-Operational Window Timer
(The unit is restricted in operation and cannot run during time
specified. If a heating cycle is running at off time, the system
will force stop the operation.)
Example shows a non-operation window timer set to
prevent the unit from operating between 5pm and
7am daily.
3. As a Force heat
(The system turns on at a set time and will force the unit to
run at a set time regardless of restart sensor temperature.)
Example shows a Force Heat timer set to 3pm every day.
4. As a Force Stop
(The system turns off at a set time and forces the unit to
stop regardless of restart sensor temperature and disallows
operation until a “Force Heat” timer occurs or user presses
power button.)
Example shows Force Stop set to 5pm every day.
T1 Off 17:00 DAY
ON --- 17:00
T1 Off 17: DAY
ON --- 17:
ON MAC: IF1238D4D4
REM ID: 17216126142
ON MAC: IF1238D4D4
REM ID: 17216126142
T1 On 07:00 DAY
ON Off 17:00
T1 On 7: DAY
ON Off 17:
T1 On 15:00 DAY
ON --- 15:00
T1 On 15: DAY
ON --- 15:
WARNING: The Force Stop timer is not
recommended.
SERVICE DIAGNOSTICS
MENU
SERVICE DIAGNOSTICS
MENU
SERVICE DIAGNOSTICS
MENU
SERVICE DIAGNOSTICS
MENU
T1 On 07:00 DAY
ON Off 17:00
T1 On 7: DAY
ON Off 17:
T1 Off 17:00 DAY
ON On 07:00
T1 Off 17: DAY
ON On 7:

8IAQUACORE – User Manual
Each individual timer can be set to repeat daily, on specific
days of the week, on all weekdays, or on weekends only.
Each timer can be set individually by using the following
steps:
• Press the MENU
SELECT button.
• Scroll to the Timers Menu (see below) by pressing
the Down or Up buttons.
• Press MENU
SELECT to select the Timers Menu.
• Scroll through to the desired timer screen.
(T1 – T7) denote the timers available.
• Initially one of the four timer options must be selected.
To do so press MENU
SELECT – the On/Off description will begin
flashing to indicate it is ready to be changed.
• Use Down or Up to adjust. If an On/Off or On
Timer is required press Down or Up until On
is indicated. If an Off/On or Off Timer is required press
Down or Up until Off is indicated.
• Press MENU
SELECT to proceed to setting the hour and adjust
Down or Up to the correct hour.
• Press MENU
SELECT to proceed to setting the minute and adjust
Down or Up to the correct minute.
• Press MENU
SELECT to proceed to setting the desired timer
occurrence and use Down or Up to select
MON-SUN (a specific day), DAY (daily), WKD
(weekend only), or M2F (weekdays).
• Press MENU
SELECT to proceed to setting the timer activation.
Should the timer be required use the Down or
Up buttons to adjust until On is indicated. To
deactivate the timer adjust until Off is indicated.
• Press MENU
SELECT to proceed to setting the second time line.
Setting this time will depend on the initial timer option
chosen.
– On/Off Timer set the hour and minute to the time
you wish the system to turn off.
– Off/On Timer set the hour and minute to the time
you wish the system to turn on.
– On Timer set the hour and minute to match the same
time chosen previously e.g. both time selections
should match.
– Off Timer set the hour and minute to match
the same time chosen previously e.g. both time
selections should match.
• Press MENU
SELECT to confirm and end the timer
setting process.
TIMERS
MENU
TIMERS
MENU

AQUACORE – User Manual I 9
Troubleshooting
The AquaCore System has two levels of fault codes:
Level 1
• Minor faults which are automatically self-corrected.
These faults may be displayed but the system will
continue to function normally. Please refer to the Fault
Codes and Descriptions chart on page 11. Please
note that some Level 1 faults may require a
service call.
Level 2
• All Level 2 faults require a qualified service person
to address. When these errors are detected the LCD
display will display the error number, the blue fault
light will illuminate and the alarm buzzer will sound.
The system will automatically switch on the power
to the external element (if connected) to ensure the
storage water cylinder still has hot water.
Indication LED Status Function / Meaning
Power
Solid On Unit is Operating or in Standby (LCD shows TMR1-7)
Solid Off Turned off / Holiday Mode
Flashing N/A
Heat
Solid On Currently in heating run cycle
Solid Off Not heating
Flashing N/A
Fault
Solid On Never
Solid Off No fault condition
Flashing Every second when a fault is present
Defrost
Solid On In Defrost Mode
Solid Off N/A
Flashing N/A
Screen Backlight
Solid On When in menus or 5 minutes after a button press
Solid Off All other times
Flashing Turned off / Holiday Mode
LED Functions
Water Leaks
In the event a water leak is discovered, immediately turn
off the AquaCore System. Proceed to call your plumber or
technical/service agent.
Water Storage Cylinder Requirements
The Water Storage Cylinder must have an effective diffuser
on the bottom water feed and be well insulated to ensure
the cylinder remains stratified. For mains pressure systems
the water pressure must be limited to 500 kPa (5 bar). A
water strainer must be used on the water supply to the
cylinder. The installation of the Water Storage Cylinder
must be carried out by a registered plumber and meet the
required government regulations.
Flexible metal enclosed hoses are recommended for
connections between the AquaCore unit and fixed water
terminals. This ensures added earthquake protection and
vibration noise reduction.
AQUACORE | Trouble Shooting

10 IAQUACORE – User Manual
WARNING:
Should FLT09 or FLT10 be displayed, or in the event of a very loud whistling noise coming from the
water tank and bursts of air discharges from the tap, immediately turn the AquaCore off and if possible
the water taps that isolate the AquaCore from your water cylinder and call your authorised installer/
service agent.
As a precaution do not drink the water until the system has been inspected.
WARNING:
To avoid running out of hot water, the system is designed to ensure you have a minimum of half a tank of
hot water before it starts the heating process. If your household has high demand times during the day,
such as everyone showering in the morning, you can set any one of the seven timers to start the heat
process 1.5 hours before your high demand period to ensure you have a full tank of hot water.
NOTE 1:
If there has been a water supply outage or the water turned off for maintenance this will also cause air
bubbles in the water supply. The AquaCore has an internal Automatic Air Bleeder Valve installed which
in most cases will automatically remove air around the water pumps. If the system has FLT00 or FLT03
or FLT09 or FLT14 shortly after the system starting, then ensure that the air has been bled out of the
AquaCore System by turning off the water to the Storage Tank Isolation Valve, ensuring that the cold
and hot water supply valves to the AquaCore are open, press the menu button to open the motorised
ball valve and turn on a hot tap until the ow has no air bursts. Turn off the hot tap and open the Storage
Tank Isolation Valve. Manually press the power on button again.
NOTE 2:
If the system has an FLT05 alarm ensure that the Sensor placed half way up the tank is plugged into
CN46. Also check that the cable between the PTC Sensor and CN46 is not damaged or open circuit. At
25°C the resistance between the two wires is 100k ohms.

AQUACORE – User Manual I 11
Fault Codes and Descriptions
Fault
Code Fault Description Level Buzzer External Element
Turned On User Action Action
FLT00 No water flow at
start-up 2Yes Yes Call for service The system needs bleeding – Refer to note 1
FLT01 Water pump > max.
speed. Water too hot 1 No No System will retry Fault will be displayed but system will
continue to retry
FLT02 Water pump < min.
speed. Water too cold 1 No No System will retry Fault will be displayed but system will
continue to retry
FLT03 R134A thermal cut out
activated 1 No No System will retry Will shut down for 3 minutes and restart –
refer to note 1
FLT04 R134A thermal cut out
activated 4 times 2Yes Yes Call for service
Unit has had 3 FLT03 errors in the same run –
fault alarm activated and external element turned
on
FLT05 Tank Sensor not
detected 1Yes No Call for service
The system will still heat the water tank but
will not be able to sense when to restart the heat-
ing cycle – refer to note 2
FLT06 No OD Startup Data
detected 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT07
FLT07 Outdoor unit not
responding 2Yes Yes Call for service Outdoor unit not responding
FLT08 Outdoor current too
high > 9A 2Yes Yes Call for service Outdoor unit using too much power
FLT09 IA too high >= 3A 2 Yes Yes Call for service Indoor compressor using too much power –
refer to note 1
FLT10 Possible refrigerant
gas leak 2Yes Yes Call for service Turn off power and water taps to AquaCore
FLT11 Defrost WE < 4.0 1 No No System will retry Water too cold to defrost possible water
pump fault
FLT12 TC < 2.0 2 Yes Yes Call for service Not enough energy for defrost
FLT13 IA too high 2 Yes Yes Call for service Indoor compressor fault
FLT14 R134A discharge
temp too high > 90.0 2Yes Yes Call for service Indoor compressor over heated – refer to note 1
FLT15 R32 discharge temp
too high > 90.0 2Yes Yes Call for service Outdoor unit discharge too high
FLT17 R134A refrigerant
charge low 1 No No Call for service Check for possible R134A refrigerant leaks and
recharge as per service manual to 200 grams
FLT18 R134A refrigerant too
high 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT09
FLT19 Outdoor unit has
errored 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT07
FLT20 Critical outdoor
shutdown 2Yes Yes Call for service Major fault call for service
FLT21 R134A refrigerant
charge too low 1Yes Yes Call for service Check for possible R134A refrigerant leaks and
recharge as per service manual to 200 grams
FLT22
Not enough heat
energy from outdoor
unit after 30 minutes
from start-up
1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT02
FLT23 R134A discharge
too high 1 No No System will retry Will retry every 15 minutes
After 4 attempts it will fault FLT14
FLT24 R32 Condensing
below 2°C1 No No System will retry Will retry every 15 minutes
After 4 attempts it will fault FLT12
FLT26 R32 discharge temp
too high >90.0°C 1 No No System will retry Will retry every 15 minutes
after 3 attempts it will fault FLT15
FLT27 Water exit below 50C
for 5 minutes 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT10
FLT28 Water exit too hot 1 No No System will retry Will retry every 15 minutes
after 4 attempts it will fault FLT01
FLT34 After 3 attempts it will
fault FLT15 2Yes Yes Call for service Refer to FLT00

12 IAQUACORE – User Manual
WARNING
Consult your supplier for correct and safe installation of the Black Diamond AquaCore.
• This unit should not be installed by persons other than authorised technicians. An improperly installed unit
may cause fire, electric shock, injury, water leakage etc.
Dedicated power supply required.
• A non-dedicated power supply may cause overheating or fire.
Do not install the unit where ammable gas could leak.
• If gas leaks and accumulates around the outdoor unit, it may cause an explosion.
Earth the unit correctly.
• Do not connect the earth wire to a gas pipe, water pipe, lightning rod, or a telephone ground wire. Improper
earthing may cause electric shock.
The unit should not be installed, relocated, disassembled, altered, or repaired by the end user.
• Improperly handled units may cause fire, electric shock, injury, water leakage, etc. Consult your supplier for
advice before any work is carried out around the unit.
• If the power supply cord is damaged, it must be replaced by the manufacturer or its service representative in
order to avoid a hazard.
When installing, relocating, or servicing the unit, make sure that no substance other than the specied
refrigerants (R32 in the outdoor unit and R134A in the AquaCore unit) enters the refrigerant circuit.
• Any presence of foreign substance such as air can cause abnormal pressure rise and may result in explosion
or injury.
• The use of any refrigerant other than that specified for the system will cause mechanical failure, system
malfunction, or unit breakdown. In the worst case, this could lead to a serious product safety issue.
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.
• Children should be supervised to ensure that they do not play with the appliance.
During operation the water pipes and refrigerant pipes get hot and should not be touched. Doing so may
cause serious injury.
All water pipes between the AquaCore unit and the storage water cylinder must be insulated.
All refrigerant pipes between the AquaCore unit and the outdoor unit must be insulated.
Safety Warnings

AQUACORE – User Manual I 13
WARNING
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.
Be aware that refrigerants may not contain an odour.
1.0 Ventilation
Ensure that you are in an open area or that it is adequately ventilated before breaking into the system or conducting
any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
2.0 Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other
adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from
sources such as compressors or fans.
3.0 Detection of ammable refrigerant
Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant
leaks. A halide torch (or any other detector using a naked flame) shall not be used.
The following leak detection methods are deemed acceptable for all refrigerant systems.
Electronic leak detectors may be used to detect refrigerant leaks but, in the case of, the sensitivity may not be
adequate, or may need re-calibration (Detection equipment shall be calibrated in a refrigerant-free area). Ensure that
the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equipment
shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the
appropriate percentage of gas (25 % maximum) is confirmed.
Leak detection fluids are also suitable for use with most refrigerants but the use of detergents containing chlorine
shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
NOTE: Examples of leak detection uids are
• bubble method.
• electronic leak detectors ‘sniffers’.
• ultrasonic method.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system,
or isolated (by means of shut off valves) in a part of the system remote from the leak. Removal of refrigerant shall be
according to Clause DD.9.

14 IAQUACORE – User Manual
WARNING
4.0 Removal and Evacuation
When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall
be used. However, it is important that best practice is followed since flammability is a consideration. The following
procedure shall be adhered to:
• remove refrigerant;
• purge the circuit with inert gas (optional for A2L);
• evacuate (optional for A2L);
• purge with inert gas (optional for A2L);
• open the circuit by cutting or brazing.
The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable
refrigerant other than A2L refrigerants, the system shall be purged with oxygen-free nitrogen to render the appliance
safe for flammable refrigerant. This process may need to be repeated several times. Compressed air or oxygen shall
not be used for purging refrigerant systems.
5.0 Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice
that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the total system charge is available. All cylinders to be used
are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of
refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working
order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is
at hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable
refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall
be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check
that it is in satisfactory working order, has been properly maintained and that any associated electrical components
are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant
waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level
to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be
carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be
employed to accelerate this process. When oil is drained from a system, it shall be carried out safely.

AQUACORE – User Manual I 15
Heating
Capacity
Rated [kW] 3.4
Min-Max [kW] 0.9 – 4.5
Sound Level Outdoor (SPL) [dBA] 49
Power Supply (Powered from indoor unit) 230/240V / Single Phase / 50 Hz
Controller In-built 7 Day Timer, External Temperature Probe, Ripple Mains Feed Compatible
Water Piping
Diameter (Inlet/Outlet) [inch] ½
Water Flow [L/minute] 0.6 – 2.4 (1.2 typical)
Water Head Height Min [m] 5
Water Pressure Max [kPa] 500
Water Temperature Range Input [°C] 5 – 55
Refrigerant
Piping
Diameter (Liquid/Gas) [mm] 6.35 / 9.52
Max. Length/Height [m] 20 / 12
Chargeless Piping Length [m] 1
Indoor Unit
Dimensions (W x D x H) [mm] 455 x 240 x 395
Weight [kg] 23.1
Refrigerant
Type R134A
Quantity [g] 190g (+/– 10g)
Outdoor Unit
Dimensions (W x H x D) [mm] 800 x 550 x 285
Weight [kg] 34(VG) 35(VGD)
Refrigerant
Type R32
Quantity [g] 700
Operation Range
Outdoor Heating [°C] -15 / +45
Optional Extras Ethernet connection (Standard), Optional Water Inlet Temperature Probe, Optional Water Outlet Temperature
Probe, Optional Water Usage Meter, Optional Water Flow Meter
Specications

16 IAQUACORE – User Manual
NOTES:

AQUACORE – User Manual I 17

PRINTED FEBRUARY 2023
For more information on AquaCore Hot Water Heat Pumps
please visit our website or call our Customer Service Team.