Sinclair SWH-200DE User manual

SWH-200DE+SWH-35ERA2
SINCLAIR WATER HEATER
SERVICE AND INSTALLATION
MANUAL
HEAT PUMPS
E N

Contents
PRODUCT ...........................................................................................................................1
1 MODELS LIST .........................................................................................................................1
2 NOMENCLATURE ...................................................................................................................1
2.1 Nomenclature of outdoor unit............................................................................................................... 1
2.2 Nomenclature of water tank ................................................................................................................. 2
3 FUNCTION...............................................................................................................................2
4 PRODUCT PARAMETERS ......................................................................................................3
4.1 Product Parameters of Outdoor Unit.................................................................................................... 3
4.2 Parameters of the Water Tank ............................................................................................................. 3
4.3 Performance Data of Hot water Mode ................................................................................................. 4
5 Working Principle ................................................................................................................... 4
5.1 Brief Introduction to Working Principle................................................................................................. 4
5.2 Working Diagram ................................................................................................................................. 4
6 Optional Accessories .............................................................................................................5
CONTROL ...........................................................................................................................6
1 Unit Control.............................................................................................................................6
1.1 Overall Control Logic............................................................................................................................ 6
1.2 Key Control Logics ............................................................................................................................... 6
2 Wired Controller .....................................................................................................................7
3 Query Parameters...................................................................................................................8
4 Operation Instructions ...........................................................................................................8
4.1 On/Off Setting ...................................................................................................................................... 8
4.2 Common Modes Setting ...................................................................................................................... 9
4.3 Special Modes Setting ......................................................................................................................... 9
4.4 Water Temperature Setting ................................................................................................................ 10
4.5 Time Setting ....................................................................................................................................... 10
4.6 Function Setting ................................................................................................................................. 13
4.7 Special Function................................................................................................................................. 17
4.8 Errors Display..................................................................................................................................... 17
INSTALLATION .................................................................................................................18
1 Engineering Installation Flowchart...................................................................................... 18
2 Preparations.......................................................................................................................... 19
2.1 Precautions for Engineering Installation ............................................................................................ 19
2.2 Design Drawing Review..................................................................................................................... 20
2.3 Installation Material Selection ............................................................................................................ 21
3 Installation of the Unit .......................................................................................................... 23
3.1 Installation of the Outdoor Unit........................................................................................................... 23
3.2 Installation of Water Tank ................................................................................................................... 26
4 Refrigerant Pipe Design .......................................................................................................27
4.1 Precautions on Pipe Design............................................................................................................... 27
4.2 Pipe Installation Diagram ................................................................................................................... 27
5 Pipes Installation and Insulation ......................................................................................... 29
5.1 Pipes Installation for the Cooling System .......................................................................................... 29
5.2 Installation of Water Pipes ................................................................................................................. 33
5.3 Thermal Insulation Measures............................................................................................................. 35
6 Electric Installation...............................................................................................................36
6.1 Precautions on Safety........................................................................................................................ 36
6.2 Installation of Power Cord .................................................................................................................. 37

6.3 Circuit Diagram .................................................................................................................................. 38
7 Installation of Communication System ............................................................................... 38
7.1 Communication Cable Terminal Connection...................................................................................... 38
7.2 Communication Cable Connection .................................................................................................... 39
7.3 Installation and Disassembly of Wired Controller .............................................................................. 39
8 Refrigerants Perfusion .........................................................................................................41
8.1 Precautions on Refrigerant Leakage ................................................................................................. 41
8.2 Method for Calculating Incremental Refrigerant for Extended Pipe .................................................. 42
8.3 Refrigerant Replenishing Method ...................................................................................................... 42
9 Check for Acceptance After Installation.............................................................................. 43
COMMISSIONING and TRIAL RUN .................................................................................44
1 Commissioning Flowchart ...................................................................................................44
2 Precautions on Safety .......................................................................................................... 44
3 Preparations.......................................................................................................................... 44
3.1 Tool Preparation for Commissioning .................................................................................................. 44
3.2 Document Preparation for Commissioning ........................................................................................ 45
3.3 Check before Commissioning ............................................................................................................ 46
4 Commissioning and Trial Run .............................................................................................47
4.1 Precautions for Commissioning ......................................................................................................... 47
4.2 Brief Introduction to Commissioning .................................................................................................. 47
4.3 Engineering Commissioning .............................................................................................................. 47
4.4 Commissioning Completed ................................................................................................................ 48
4.5 Reference Value for Judging Running Parameters of the Unit (Commissioning Inspection) ............ 48
5 Check Before Acceptance.................................................................................................... 49
6 Unit Function Setting ...........................................................................................................50
MAINTENANCE ................................................................................................................51
1 Error Code.............................................................................................................................51
2 Troubleshooting ...................................................................................................................53
2.1 E1 High Pressure Protection.............................................................................................................. 53
2.2 E3 Refrigerant-lacking Protection ...................................................................................................... 54
2.3 E4 High Discharge Temperature Protection....................................................................................... 55
2.4 E6 Communication Error.................................................................................................................... 55
2.5 F3, F4, F6, Fd, FE, FL Temperature sensor Error ............................................................................. 56
3 Repair of Key Components .................................................................................................. 57
3.1 Introduction to Key Components........................................................................................................ 57
3.2 Disassembly of Key Components ...................................................................................................... 58
4 Exploded View and Parts List .............................................................................................. 61
4.1 Exploded View and Parts List of the Outdoor Unit............................................................................. 61
4.2 Exploded View and Parts List of the Water Tank ............................................................................... 62
UNIT MAINTENANCE .......................................................................................................64
1 Water Input and Drainage of Water Tank............................................................................. 64
2 Regular Cleaning for the Water Tank................................................................................... 64
3 Safety Valve Maintenance ....................................................................................................64
4 Maintenance of the Unit .......................................................................................................65
5 Attachment: Mapping Table of the Temperature Sensor Resistance and Temperature... 65

SINCLAIR
AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
1
PRODUCT
1 MODELS LIST
Product type Model
Heatin
g
capacity
Outline diagram
Outdoor unit
SWH-35ERA2
3500+1500
(electric
heater)
Water tank SWH-200DE
2 NOMENCLATURE
2.1 Nomenclature of outdoor unit
SWH
-
S
3.5
Pd
G
/
Na
A1
-
K
1
2
3
4
5
6
7
8
9
10
NO.
Description
Options
1
Unit code
SWH
2 Heating style C – Circulating;
S – Static;
3
Function character
Q – Multifunctional; Single function – Omit
4
Heating capacity
3.5kW
5
Compressor style
Pd – DC Inverter; Fixed Frequency – Omit
6
Water tank mode
E – 100L; F – 150L; G – 200L; H – 250L; No Water Tank – Omit
7
Climate code
T1 – Omit; T2 – Cold Climate; T3 – Warm Climate
8 Refrigerant R22 – Omit; N – R407c; Na – R410A; Nb – R134a; Ne –
R417A
9
Design serial number
A, B, C, …or A1,B1,C1…
10 Power code
K – 220-240V-1Ph
～
50Hz;
D – 220-240V-1Ph
～
60Hz; …

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
2
2.2 Nomenclature of water tank
SWH T D 200 L C JW / A - K
1
2
3
4
5
6
7
8
9
10
11
12
NO.
Description
Options
1
Water tank code
SWH
–
Water tank
2
Water tank material
Stainless steel – Omit; T –Enameled steel
3 Water tank type Normal heat pump water tank – Omit; V – Heat pump water
tank for VRF unit
4 Function code No electric heating function – Omit; D – With electric heating
function
5
Water tank capacity
Capacity of water tank; Unit:（L）
6
Structure type
B – Wall-mounted type; L – Floor standing type
7 Endure pressure form C – Endure pressure water tank; Not endure pressure water
tank – Omit
8 Form of heat exchange tube
No heat exchange tube – Omit;
J – Built-in coil tube static heating type (J indicates single coil
tube; J2 indicates double coil tubes);
JW – Outer coil tube static heating type;
D – The floor heating coil tube (D indicates single coil tube; D2
indicates double coil tube)
9
Appearance structure type
Round – Omit; F – Quadrate; Y – Atactic; T – Strip
10 Inner tank number 1 – Omit; 2, 3,…
11
Design serial number
A, B, C1, C2, …
12 Power code K – 220-240V-1Ph~50Hz;
D – 220-240V-1Ph~60Hz; …
3 FUNCTION
No.
Name
Function
1 Compressor Increases pressure for the refrigerant and provides driving force for circular flow of the
refrigerant as a main driving component.
2 Four-way valve Reverses flow direction of the refrigerant when the system switches between the
normal heat up mode and defrosting mode.
3 Water tank Provides heat exchange channel for refrigerant and water and stores hot water for
daily use.
4 Electronic expansion
valve
Speeds up high-pressure and high-temperature refrigerant and reduces pressure and
adjusts the circulation amount of coolant.
5 Finned tube
exchanger
Provides heat exchange channel for refrigerant and air.
6 Fan motor Enhances heat exchange on the air side of the finned tube exchange and provides a
low-temperature heat source continuously.
7
Filter
Filters impurities in refrigerant to protect components with small diameter.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
3
4 PRODUCT PARAMETERS
4.1 Product Parameters of Outdoor Unit
Model
SWH-35ERA2
Rated Heating Capacity
(
*
)
W
3500(1800~3700)
Rated Input Power
(
*
)
W
833(360~910)
COP
(
*
)
W/W
4.10
Load Profile
-
L
COP
DHW(
**
)
W/W
3.08
Energy Efficiency Class
(
**
)
-
A
+
Water Heating Energy Efficiency
(
**
)
-
130%
Annual electricity consumption
(average climate conditions)
kWh 795
Maximum Input Power
W
2000+1500W (Electric Heater)
Outlet Water Temperature
°C
Default: 55°C, 35°C~55°C
Power Supply
-
220V-240V ~ 50Hz
Insulation Level
-
I
Protection of Ingression
-
IPX4
Refrigerant
Name
R410A
Charge
kg
1.40
Outline Dimensions
W × D × H
mm
842×320×591
Package Dimensions
W × D × H
mm
948×363×660
Gross/Net Weight
kg
44.5/38.5
Sound Power Level
(
***
)
dB(A)
63
Operating Range
°C
-25~45°C
NOTES:
①(*)Value obtained with the following conditions: Outdoor temperature: 20°C DB/15°C WB; Water
tank temperature (start/end): 15(dry bulb temperature) /55(wet bulb temperature).
②(**)Value obtained with an air temperature of 7°C and a water inlet at 10°C, as per EN16147-2017,
(EU) No 814/2013.
③(***)Value obtained as per EN 12102-2008.
④Under “RAPID” function, electric heater helps to heating water.
⑤Please always see the nameplate for the exact data as this table is subject to change.
4.2 Parameters of the Water Tank
Model SWH-200DE
Capacity
L
185
Power Supply for Electric Heater
-
220V-240V ~ 50Hz
Input Power for Electric Heater
W
1500
Outline Dimensions(W × D × H)
(
*
)
mm
462 × 462 × 2000
Package Dimensions(W × D × H)
(
*
)
mm
2108 × 583 × 565
Water Tank Gross/Net Weight
(
*
)
kg
83/72.5
Outer Size of Connection Pipe
mm
Φ6, Φ9.52
NOTES:
①(*)Due to different production bases, the water tank height and working medium port type have some
differences. Please refer to the actual product.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
4
②Type selection of water tank shall also be made based on local climatic conditions and opinions from
professionals.
③For units with water tank equipped with an electrical heater, that is, the water tank model of which
starts with SWH, both the heat pump and electrical heater are started for heat up under low
ambient temperature or “RAPID” function.
④If the specification parameters change with product improvement, refer to the parameter specified
on the nameplate.
4.3 Performance Data of Hot water Mode
environment
temperature (°C) MODE inlet water temperature (°C)
outlet water
temperature
(°C)
capability
(kW)
COP
(W/W)
45
HOT
WATER
29
55
2.90
7.80
20
15
55
3.50
4.10
7
10
55
1.80
3.80
0
10
55
1.90
2.30
-7
10
55
2.40
2.20
-15
10
55
1.90
1.80
-20
10
55
1.40
1.50
5 Working Principle
5.1 Brief Introduction to Working Principle
As the refrigerant has different phase-transition temperature under varied pressure, it enables the
heat pump to transfer heat of low-temperature heat source to the high-temperature heat source. The air
source water heater unit utilizes the heat pump to obtain heat from the ambient low-grade energy (air
source) via thermodynamic cycle by consuming partial electrical energy, and then delivers heat to the
water tank for heating up water.
5.2 Working Diagram
5.2.1 Working Diagram
The air source heat pump water heater is designed based on the heat pump principles. It consumes
a part of electric energy as a supplement, and by using the thermodynamic cycle, absorbs heat from the
low-grade energy (air source), and transfers the heat to a condenser through a compressor, and
releases it to the water inside the water tank. In this way, the water is heated up.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
5
The working principles of an air source heat pump water heater are the same as those of a heat
pump air conditioner. A heat pump air conditioner absorbs heat from the natural environment and
transfers it to the indoor air; however, the air source heat pump water heater uses the absorbed heat to
heat up domestic water. The air source heat pump water heater is a novel, efficient, energy-saving, and
environment-friendly heater product.
6 Optional Accessories
The Sinclair air source water heater unit supports the following accessories:
Item
Self-limiting temperature tracing belt
Pressure stabilizing valve
NOTE:
If any of the preceding accessories is required, contact with the local sales company.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
6
CONTROL
1 Unit Control
1.1 Overall Control Logic
(1) High pressure switch
When the discharge pressure of compressor exceeds the preset value, an error will be displayed
and the unit will stop or not start.
(2) Temperature sensor error detection and handling
Once the temperature sensor for the ambient temperature, gas discharge, gas suction, tube
temperature, or water tank is open-circuited or short-circuited, the corresponding error code will be
displayed and all loads will be cut off. After the error is cleared, the unit automatically runs again.
1.2 Key Control Logics
(1) Control on compressor
After power is connected, start the system by the manual operator and detect the outdoor ambient
temperature sensor. If the outdoor ambient temperature is not lower than -25°C and when no error is
detected and start up conditions of the compressor are met, the system starts by following the hot water
sequence.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
7
(2) Control on fan motor
When start up conditions of the compressor is met, the system starts by following the hot water
sequence. The electronic expansion valve resets and is initialized, and the external fan motor starts.
After 10s, the compressor starts. Then speed of the fan will determine by the ambient temperature and
the rotate speed of compressor.
(3) Control on defrosting
When the compressor is initially powered on and started, it determines the defrosting condition after
running for the preset duration. If the defrosting condition is met, the system defrosts before running in
“HOT WATER” mode (including freeze-proofing operation of compressor). After defrosting is over, the
compressor starts for heat up. When the cumulative operation time exceeds or equals to the preset time
for defrosting, defrosting will be performed if the temperature difference between the outdoor exchanger
pipe and environment temperature sensor meets the defrosting condition.
(4) Control on freeze-proofing function
In the Off state, if water temperature in the water tank detected by the system based on the ambient
temperature is too low, the unit starts the freeze-proofing function immediately.
2 Wired Controller
1
i-know button
2
Timer button
3
Function button
4
Rapid button
5
Mode button
6
Increase button
7
On/Off button
8
Decrease button

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
8
1
Display of Common Operation Modes:
HOTWATER, SAVE, PRESET and NIGHT
mode.
6 Display of defrost, antifreeze running, and e-heater
running (or display of the Special E-HEATER Mode).
2 Display of RAPID and i-know function. 7
Display of hot water volume (this function is
unavailable to models with single temperature
sensor).
3
Display of CYCLE, STERILIZE,
SUNFLOWER, ABSENCE, VACATION, and
ONCE function (the STERILIZE function may
not work for models without an electrical
heater).
8 Display of operating/standby.
4 Display of Keypad Lock function. 9 Display of actual water temperature, temperature set
point, error codes, and running parameters.
5 Display of system time, preset time, timer
setting and running parameters.
10 Display of the sub-controller. (This function is
reserved.)
3 Query Parameters
This function is provided for the debugging personnel to query running status of the unit. After
pressing and holding “MODE”+ “▲”button for 5 second, the parameter display area blinks. 00 is
displayed by default. The “▲” and “▼” buttons can be pressed to switch the query item.
Query codes are described in the following table.
Query Code Query Parameter
00 00 by default
01 Communication protocol version
02 Temperature of the temperature sensor for water outlet pipe
03 Temperature of the upper temperature sensor of the water tank (detected by the mainboard of the
outdoor unit)
04 Temperature of the outdoor ambient temperature sensor
05 Reserved
06 Temperature of the air suction temperature sensor
08 Temperature of the air discharge temperature sensor
13 Temperature of tube temperature sensor for outdoor heat exchanger
16 Temperature of the lower temperature sensor of the water tank (detected by the mainboard)
17 Display of single or dual temperature sensor (01 indicates single temperature sensor and 02 indicates
dual temperature sensor)
18 Temperature of the middle temperature sensor of the water tank (part of units have the temperature
sensor)
19 Temperature of the upper temperature sensor of the water tank(detected by the mainboard of the water
tank,part of units have the temperature sensor)
4 Operation Instructions
4.1 On/Off Setting
The unit will be started or stopped by pressing the “On/Off ” button.
NOTE: After energization and under normal communication, the LCD will display the water
temperature, time, and hot water volume (for models with dual temperature sensor) under both On and
Off states of the unit. It means the Off state if the LCD does not display the running mode, as shown in
the following figure.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
9
4.2 Common Modes Setting
In the On state of the unit, press the MODE button to switch the operation modes in the following
sequence:
HOTWATER SAVE PRESET NIGHT
The HOTWATER mode is shown in the following figure.
4.3 Special Modes Setting
If the heat pump of a water heater equipped with an electrical heater is faulty, users can press and
hold MODE+RAPID for 5s in any mode under the state to enter the E-HEATER mode.
NOTE: The E-HEATER mode can be used only when the heat pump is faulty. In this case, contact
the aftersales service immediately.
The E-HEATER mode is shown in the following figure.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
10
In the E-HEATER mode, users can press the MODE button to switch to the HOTWATER mode.
Note that the E-HEATER mode will be cancelled automatically and the HOTWATER mode will be started
upon restart of the water heater in the case of blackout.
4.4 Water Temperature Setting
In the On state, press “▲” to increase or press “▼” to decrease the temperature set point. The water
temperature will increase or decrease continuously by 1°C when the button is pressed and held.
The minimum temperature set point for all models is 35°C. The maximum temperature set point can
be set to 55°C, 58°C, or 70°C. For details, see the Integrated Unit User Manual.
4.5 Time Setting
4.5.1 System Time Setting
In the main interface, press and hold the TIMER button for five second. The system time setting
interface is displayed. The clock icon is on and the hour value blinks. Press “▲”or “▼” to adjust the hour
value and press the TIMER button to confirm setting. Then the minute value flickers. Press “▲”or “▼” to
adjust the minute value and press the TIMER button to confirm setting. After system time setting is saved,
the main interface is displayed. In the setting process, if no button is pressed within 15s, the main
interface will be displayed and setting will not be saved.
The system time ranges from 00:00 to 23:59. Each time you press “▲” or “▼”, the time increases or
decreases by 1 hour or 1 minute. When the button is pressed and held, the time increases or decreases
continuously by 1°C or 1 minute.
The setting process is shown in the following figure.
Main interface
Hour value of the
system time
blinks.
Minute value of
the system time
blinks.
Press and hold the
TIMER button.
Press the TIMER
button.
Press ▲or ▼to
adjust the value.
Press ▲or ▼to
adjust the value.
Press the TIMER
button.
Setting is
complete.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
11
4.5.2 Timer Setting
Timer setting: Under the HOTWATER or SAVE mode or under the Off state, press the TIMER
button to enter the timer setting interface. The TIMER and ON icons are on and the hour value blinks.
Press ▲ or ▼ to adjust the hour value and press the TIMER button to confirm setting. Then the minute
value flickers. Press ▲ or ▼ to adjust the minute value and press the TIMER button to confirm setting.
Then the OFF icon is on and ON icon is off. The hour value blinks. Press ▲ or ▼ to adjust the hour
value and press the TIMER button to confirm setting. Then the minute value flickers. Press ▲ or ▼ to
adjust the minute value and press the TIMER button to confirm setting. After the scheduled on/off time
setting is saved, the main interface is displayed. In the setting process, if no button is pressed within 15s,
the main interface will be displayed and setting will not be saved.
Timer cancelling:After the scheduled on/off time is set, press the TIMER button to cancel it.
NOTE: The scheduled on time and off time cannot be the same; otherwise, the LCD switches to the
interface for resetting the timer.
Main interface
Timer is on and
the hour value
blink.
Timer is on and
the minute value
blink.
Press the
TIMER button.
Press the
TIMER button.
Press ▲or ▼to
adjust the value.
Press ▲or ▼to
adjust the value.
Timer is off and
the hour value
blink.
Press ▲or ▼to
adjust the value.
Press the
TIMER button.
Timer is off and
the minute value
blink.
Press the
TIMER button.
Press ▲or ▼to
adjust the value.
Press the
TIMER button.
Press the
TIMER button.
Cancel the timer.
Setting is
complete and the
timer is started.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
12
4.5.3 Preset Time Setting
In the PRESET mode, hot water is prepared in advance by the preset time.
In the main interface of the PRESET mode, press the TIMER button to enter the selection interface.
PRESET 1 blinks while PRESET 2 and PRESET 3 are not displayed. Press ▲ or ▼ and the LCD blinks
circularly in the flowing sequence: PRESET 1 – PRESET 2 – PRESET 3 – PRESET 1.
Preset time setting: Press the TIMER button to select PRESET 1. Then the PRESET 1 icon is on
and the hour value blinks. Press ▲ or ▼ to adjust the hour value and press the TIMER button to confirm
setting. Then the minute value flickers. Press ▲ or ▼ to adjust the minute value and press the TIMER
button to confirm setting. After time setting for PRESET 1 is saved, the main interface is displayed.
PRESET 2 or PRESET 3 setting: Press the TIMER button to select PRESET 2 and then the ON
icon blinks. Press ▲ or ▼ to switch the ON and OFF icons. When the ON icon blinks, press the TIMER
button. Then the PRESET 2 icon is on and the ON icon is off. The hour value blinks. Press ▲ or ▼ to
adjust the hour value and press the TIMER button to confirm setting. Then the minute value flickers.
Press ▲ or ▼ to adjust the minute value and press the TIMER button to confirm setting. After time
setting for PRESET 2 is saved, the main interface is displayed. The method for setting PRESET 3 is the
same as that for PRESET 2. (After setting is saved, the ON and OFF icons are not displayed in the main
interface as these icons are available in the setting process.)
In the time presetting process, if no button is pressed within 15s, the preset interface will switch to
the main interface automatically and setting will not be saved.
If the time preset for PRESET 1, PRESET 2, and PRESET 3 is the same, it is regarded as one timer.
The preset time can be memorized. If the preset time does not need to be reset, users only need to
select on or off.
Preset time cancelling: After time is preset for PRESET 2 or PRESET 3, users can press the
TIMER button to display the selection interface. The icon of PRESET 2 blinks. Press ▲ or ▼ and the
LCD blinks circularly in the flowing sequence: PRESET 2 – PRESET 3 – PRESET 1 – PRESET 2. Select
PRESET 2 and press the TIMER button. Select to cancel PRESET 2. Then the PRESET 2 icon is on and
the ON icon blinks. Press ▲ or ▼ to select OFF. Press the TIMER button to confirm cancelling and
return to the main interface. The method for cancelling preset time for PRESET 3 is the same as that for
PRESET 2. Preset time for PRESET 1 cannot be cancelled. If users select PRESET 1, the time setting
interface will be displayed.

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
13
Main interface PRESET 1
blinks.
The ON icon
blinks.
Press the
TIMER button.
Press ▲or ▼to select
PRESET X
The hour value
of PRESET X
blinks.
Press ▲or ▼to
adjust the value.
Press the
TIMER button.
The minute
value of
PRESET X
blinks.
Press the TIMER button.
Press the TIMER button.
The OFF icon
blinks.
PRESET 1 or
PRESET 3
blinks.
Press the TIMER button.
Press the TIMER button.
Press ▲or ▼to adjust
the value.
Press the
TIMER button.
Press ▲or ▼to
select on or off.
Setting is complete
and PRESET X is
canceled.
Setting is
complete and
PRESET X is
started.
The PRESET mode runs circularly. The water heater starts to heat up water based on the preset
time and ambient temperature and stops one hour after the preset time.
4.6 Function Setting
4.6.1 i-know
In the On state, press the i-know button to select the i-know function. To cancel this function, press
the i-know button again.
4.6.2 RAPID
In the On state, press the RAPID button to select the RAPID function. The electrical heater is started
for heat up. To cancel this function, press the RAPID button again. Then electrical heater is stopped.
Under the E-HEATER mode, users can press the RAPID button to switch to the HOTWATER mode.
To return to the E-HEATER mode, press the RAPID button again.
4.6.3 CYCLE, SUNFLOWER, ABSENCE, and ONCE
In the On state, press the FUNCTION button to enter the interface for selecting among the CYCLE,
SUNFLOWER, ABSENCE, and ONCE functions. When a function is selected, the corresponding icon

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
14
blinks. Then users can press ▲ or ▼ to start or cancel this function. If no operation is performed within
5s, it will be regarded that this function is not required. If this function is started, the function icon is
displayed without blinking. If this function is cancelled, the function icon will not be displayed. If no
function is selected in setting interface for 5s, the interface switches back to the original status.
4.6.4 STERILIZE
The STERILIZE function is available under four common modes. However, after this function is set,
the unit runs as under the HOTWATER mode. The water heater controls startup and shutdown of the
unit based on the difference between the actual water temperature and that required for sterilization.
In the On state and in a common mode, press the FUNCTION button to enter the function selection
interface. When the STERILIZE function is selected, the corresponding icon blinks. At the same time, the
preset circular sterilization duration is displayed as d:XX, as shown in the following figure.
During this period, the following operations can be performed:
(1) Press ▲ or ▼ to start or cancel the STERILIZE function. If this function is started, the
STERILIZE icon is displayed without blinking. Sterilization will be performed circularly by the preset d
and h value; If this function is canceled, the STERILIZE icon is not displayed. If no operation is
performed within 5s, it will be regarded that this function is not required. After this function is started and
when sterilization is being performed, the function icon blinks.
(2) Press the TIMER button to enter the sterilization parameter setting interface. Press ▲ or ▼ to
select the d value and then press the TIMER button to confirm the value. When the confirmed d value is
not 0, the h value setting interface is displayed. Press ▲ or ▼ to select the h value and then press the
TIMER button to confirm the value. When the STERILIZE icon is displayed, the STERILIZE function is
started. If the STERILIZE icon blinks, the preset h value (time point for sterilization) is achieved and
sterilization is being performed.
Sterilization Parameter
Meaning
Range
d value Day interval for circular
sterilization
0-10 days; 0 indicates sterilization for once only and the
sterilization function will be canceled after being
performed.
h value Time point for circular
sterilization
00:00-23:00

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15
Circular sterilization:
Sterilization is performed circularly by the d value. Once the circular sterilization conditions are met,
sterilization is performed regardless of on/off status of the controller and beyond limit of common modes
and functions except VACATION. However, users can stop sterilization under process by pressing the
ON/OFF button to shut it down. (But it can only stop sterilization for this time without affecting circular
sterilization; the preset circular sterilization function still works.)
OFF reminder for sterilization failure:
If the OFF icon is displayed at the clock position after the STERILIZATION function is started,
sterilization fails and the water temperature required for sterilization cannot be reached. The OFF
reminder can be canceled when any button is pressed.
The OFF reminder only indicates that sterilization fails for this time without affecting circular
sterilization.
The OFF reminder is shown in the following figure.
NOTES:
①When time goes from 23:59 to 00:00, the system enters a new day, which is the basis for increasing
the number of days.
②Every time after the STERILIZE function is started or sterilization parameters are adjusted in the
sterilize function setting interface, sterilization will be performed for once immediately and the day
interval for sterilization will be recalculated accumulatively. Even when sterilization is being
performed, operations such as sterilize function resetting and day interval adjusting for sterilization
will also cause recalculation of the day interval.
③After the circular sterilization function is set, the water heater can still precisely calculate the day
interval for sterilization accumulatively and the circular sterilization function can still work in the case
of short-term power failure. If the time point for sterilization is within the power failure duration,
sterilization will be made up once power is provided again. In addition, the day interval for
sterilization will be recalculated accumulatively based on this sterilization and next sterilization will
be calculated accordingly.

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16
④Ensure that there is no long-term power failure; otherwise, the clock of the water heater will
malfunction and the STERILIZE function will not work properly.
⑤Under the E-HEATER mode, the STERILIZE function is unavailable.
4.6.5 VACATION
In the On state, press the FUNCTION button to enter the function selection interface. When the
VACATION function is selected, the corresponding icon blinks. At the same time, the preset number of
vacation days is displayed at the clock position, as shown in the following figure.
During this period, the following operations can be performed:
(1) Press ▲ or ▼ to start or cancel the VACATION function. After this function is started, the
VACATION icon will be displayed without blinking and the water heater runs based on the preset number
of vacation days; If this function is canceled, the VACATION icon will not be displayed. If no operation is
performed within 5s, it will be regarded that this function is not required.
(2) Press the TIMER button to set the number of vacation days. Press ▲ or ▼ to select the number
of vacation days from 3 to 120 days and press the TIMER button to confirm setting. Then press ▲ or ▼
to start or cancel the VACATION function.
When the VACATION function is started under the On state, the water heater calculates the number
of vacation days accumulatively. And the STERILIZE function will be started to sterilize the water tank
one day before the vacation is over. In addition, hot water is prepared by advance in the HOTWATER
before the vacation is over.
NOTES:
①When time goes from 23:59 to 00:00, the system enters a new day, which is the basis for increasing
the number of days.
②Every time after the VACATION function is started or the number of vacation days is adjusted in the
vacation function setting interface, the number of vacation days will be recalculated accumulatively.
Even when the VACATION function is being performed, operations such as vacation function
resetting and vacation day adjusting will also cause recalculation of the number of vacation days.
③After the VACATION function is set, the water heater can still precisely calculate the number of
vacation days accumulatively in the case of short-term power failure. But ensure that there is no

SINCLAIR AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
17
long-term power failure; otherwise, the clock of the water heater will malfunction and the VACATION
function will not work properly.
4.7 Special Function
4.7.1 Keypad Lock
In normal status of the unit, press and hold ▲+▼ for 5s. The LOCK icon is displayed on the
controller and all buttons become unavailable. The LOCK icon blinks when any button is pressed. To
cancel the Keypad lock function, press and hold ▲+▼ for 5s again. Then the LOCK icon disappears.
If the unit is faulty, the lock function becomes invalid and all buttons are available again. The Keypad
lock function will resume after the error is rectified. In addition, the lock status before power failure is
memorized.
4.7.2 Temperature unit setting (℃/℉)
In the Off state of the wired controller, press and hold MODE+▲ on the main interface for 5s to enter
the query interface. Then the query code 00 is displayed, press and hold MODE+▲ for 5s to display the
configurable parameter codes and values. Press ▲ or ▼ to select P5 and press the MODE button. Then
item value 00 or 01 blinks under the parameter code P5. Press ▲ or ▼ to select the item value and
press the MODE button to confirm setting (00: ℃and 01: ℉). After that, press the FUNCTION button
to return to the main interface. If no operation is performed with 15s, it will switch back to the main
interface automatically.
NOTE: Other parameters cannot be modified; otherwise, operation exception will be caused.
4.8 Errors Display
When some errors occur during operation, the error codes will be displayed on the controller.
Meanwhile, the unit is in the Off state and the controller supports only the on/off and query functions.
If multiple errors occur to the water heater simultaneously, the corresponding error codes will be
displayed circularly.
If the controller displays a error, shut down the water heater and contact qualified personnel for
maintenance. The following figure shows a communication error.
For details on error codes, see the table attached at the end of this manual.