Hokkaido HWMI 150 A Instruction Manual

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WATER HEATER
INSTALLATION & USER'S MANUAL
WARNING!
PLEASE READ CAREFULLY THIS MANUAL BEFORE INSTALLING THE WATER HEATER
Models
HWMI 150 A
HWMI 190 A

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IT
CE
All the products are in conformity with the following European provision:
- Low Voltage Directive 73/23/EEC
- Low Voltage Directive 2006/95/EC
- Electromagnetic CompatibilitY 89/336/EEC
- Electromagnetic CompatibilitY 2004/108/EC
ROHS
The products are fulfilled with the requirements in the directive 2002/95/EEC of the
EuropeanparliamentandofthecouncilontheRestrictionoftheuseofCertainHaz-
ardous Substances in Electrical and Electronic Equipment (EU RoHS Directive)
.
WEEE
In accordance with the directive 2002/96/CE of the European parliament,
herewith we inform the consumer about the disposal requirements of the
electrical and electronic products.
DISPOSAL REQUIREMENTS:
Your Water Heater is marked with this symbol.
This means that electrical and electronic products
shall not be mixed with unsorted household waste.
Do not try to dismantle the system yourself: the dis-
mantling of this kind of system, treatment of the
refrigerant, of oil and of other part must be done
by a qualified installer in accordance with relevant
local and national legislation. Water Heater must be
treated at a specialized treatment facility for re-use, recycling and recovery.
By ensuring this product is disposed of correctly, you will help to prevent
potential negative consequences for the environment and human health.
Please contact the installer or local authority for more information.
EUROPEAN REGULATIONS CONFORMITY FOR THE MODELS:
EN
TERMAL S.R.L. Via della Salute, 14 -- 40132 -- Bologna -- ITALY
Water Heater: HWMI 150 A
HWMI 190 A

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WARNING
This Unit is required reliable earthing
before usage, otherwise might cause
death or injury.
!
Please ask Authorized Technical Service
for reliable earthing connection.
Your safety is the most important thing we concerned!

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Table of Contents
PRODUCT'S OUTLINE............................................................................................................5
PRECAUTIONS & ACCESSORIES.........................................................................................6
INSTALLATION ........................................................................................................................8
WIRING...................................................................................................................................11
OPERATING INSTRUCTIONS............................................................................................... 13
TRIAL RUNNING & CAPABILITY........................................................................................... 20
MAINTENANCE .....................................................................................................................22
DIAGNOSTIC & ERROR CODES.......................................................................................... 23
AUTOMATIC RESTART AFTER A BLACKOUT.....................................................................25

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PRODUCT'S OUTLINE
Top Cover
PARTS NAMES
Fan Assy
Rear Cover
Evaporator
Magnesian Stick
Magnesian Stick Cover
Filter
PT Valve
Water Outlet
TCO
TOD
Electric Heater (upper)
Electric Heater (lower)
Water Inlet
Drainpipe
Electronic Control Box
Compressor
Front Cover
Display
Front Decorative Board
Cover Electric Heater
(upper)
Cover Electric Heater
(lower)
NOTE
All the pictures in this Manual are for explanation purpose only. They may be slightly different from the
Water Heater you purchased (depends on Model).

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PRECAUTIONS & ACCESSORIES
PRECAUTIONS
WARNING
WARNING
WARNING
CAUTION
To prevent injury to the User or other people and
property damage, the following instructions must be
followed. Incorrect operation due to ignoring of
instructions may cause harm or damage.
The safety precautions listed below are divided in two
categories: “WARNING” and “CAUTION”.
In both cases, safety instructions are very important and
must be followed carefully.
Failure to observe a warning may result in
death or serious injury.
Failure to observe a caution may result in
injury or damage to the equipment.
The Water Heater Unit must be earthed effectively.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
A creepage breaker must be installed near the power
supply.
Do not tear off the labels on the Units for the purpose
of warning/reminding and warranty.
Ask the Authorized Technical Service for installation
of Water Heater Unit.
Improper installation may result in water leakage,
electric shock or fire.
Ask the Authorized Technical Service for the repair
and maintenanance.
Improper repair and maintenance may result in water
leakage, electric shock and fire.
In order to avoid electric shock, fire or injury, if any
abnormality is detected - such as smell of fire - turn
off the power supply and call Authorized Technical
Service for instructions.
Never use the wire and fuse with wrong rated current.
Use of wrong wire or fuse may cause the Unit to break
down or a fire.
Do not insert fingers, rods or other objects into the
air inlet or outlet.
When the fan is rotating at high speed, it will cause
injury.
Never use a flammable spray such as hair spray,
lacquer paint near the Unit.
It may cause a fire.
Never touch the air outlet or the horizontal blades
while the swing flaps is in operation.
Fingers may be caught or the Unit may break down.
Never put any objects into the air inlet or outlet.
Objects touching the fan which rotates at high speed
can be dangerous.
The appliance must be installed in accordance with
national wiring regulations.
The appliance must not be used by children without
supervision.
If the supply cord is damaged, it must be replaced by
the Manufacturer or by theAuthorized Technical Service,
in order to avoid the hazard of electric shocks.
An all-pole disconnection device which has at least
3mm separation distance between its contacts shall
be incorporated in the fixed wiring, according to
national rules.
If electrical appliances are disposed of in landfills
or dumps, hazardous substances can leak into the
groundwater and get into the food chain, damaging
your health and well-being.
DISPOSAL: Do not dispose this Product as unsorted
municipal waste. Collection of such waste separately
for special treatment is necessary.
Do not dispose of electrical appliances as unsorted
municipal waste: use separate collection facilities.
Please contact your local government for information
regarding systems available.
1.

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PRECAUTIONS & ACCESSORIES
CAUTION
•The earth pole of terminal must be earthed, and the
rated current must be more than 10A. Make sure
that power supply terminal and power supply plug
are dry enough and have a good connection.
Method: Turn on power supply, run the Unit for half
an hour then turn it off and check whether the power
supply plug is hot or not. If it is hot (more than 50°C)
please change it with a new and eligible one, or it may
result in a electric shock or fire.
•Do not use the Water Heater Unit for other purposes
different from that it has been conceived.
•In order to avoid injuries, do not remove the fan guard
on the Outdoor Unit.
•Before cleaning, be sure to stop the operation and
turn the breaker off or pull out the power cord.
Otherwise, an electric shock and injury may be
caused.
•Please pay attention because water too much hot
(more than 50°C) inside the Water Heater may cause
serious injuries.
•Do not operate the Water Heater Unit with wet hands.
An electric shock may be caused.
•The installation height of power supply should be
over 1.8m, to prevent any sprinkling of water from
reaching the Unit.
•In the water inlet side, the One Way valve must be
installed.
•It is normal if some water drops from the hole of PT
valve during operation. In case of a great amount of
water, please contact theAuthorized Technical Service
for instructions.
After a long term use, check the Unit stand and fittings.
If damaged, the Unit may fall and result in injury.
Arrange the drain hose to ensure smooth drainpipe.
Improper drainpipe may cause wetting of the building,
furniture, etc.
Do not touch the inner parts of the controller.
Do not remove the frontal panel. Some parts inside are
dangerous to touch, and this may cause malfunctions
to the appliance.
Do not turn off the power supply.
System will stop or restart heating automatically. A
continuous power supply for water heating is necessary,
except when repairing and maintenance are carried
out.
ACCESSORIES2.
1
1
1
1
Accessory name
User & Installation
Manual
Y-shaped filter
One Way valve
Drain pipe
for water condensation
Table 2-1
Q.ty
Sharp
Purpose
Instructions for installation
& use (this Manual)
To filtrate inlet water
D
ischarge condensate water
Prevent water from
flowing back

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INSTALLATION
•
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•
•
•
•
•
•
Enough space must be kept for easy installation
and maintenance.
The air inlet and outlet must be free from obstacles
and strong wind.
The bearing surface should be flat and able to bear
the weight of the Unit. It must not increase noise or
vibration.
•
•
•
Precautions before installation
•Installation space
Decide the correct way of conveying the equipment.
If the Unit has to be installed in a metal part of the
building, electric insulation must be carried out, and
the installation must meet the relevant technical
standards for electric devices.
•Before installing the Unit, reserve the space for
maintenance shown in the following Figures.
The operation noise and air flow expelled shall not
affect neighbours.
The appliance must not be installed in places where
flammable gas may leak.
Installation location must be convenient for piping and
wiring.
If the appliance is installed in indoor space, it might
cause a temperature drop and noise disturbance.
Please take preventive measures for this.
If the Unit needs to be installed on a metal holder, make
sure they are insulated well and in accordance with
local standards.
Installing the equipment in any of the following places
may lead to malfunctions of the equipment itself (if it
is inevitable, consult the Supplier).
INSTALLATION LOCATION3.
CAUTION
•
The site contains mineral oils such as cutting lubricant.
•
Seaside, where the air contains much salt.
•
Sites where there are corrosive gases.
•
Factories where the power voltage fluctuates seriously.
•
Inside a car or cabin.
•
Place like kitchen where oil permeates.
•
Place where strong electromagnetic waves exist.
•
Place where flammable gases or materials exist.
•
Place where acid or alkali gases evaporate.
•
Other special environments.
•
Display
Air outlet
Barrier
600mm 800mm 200mm
600mm
500mm
200mm
Fig. 3-1
Fig. 3-2

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INSTALLATION
•
•
•
•
•
•
Water Heater Units must be installed only byAuthorized
Technical Service.
The User must never try to install the appliance by
himself.
Incorrect installation may result in water leakages,
electric shock or fire.
The equiment must be installed far from direct sunlight
and from other heat appliances. If this is not possible,
please install a covering.
The Unit must be securely fixed, in order to avoid
noise and vibration.
Make sure there is no obstacle around the Unit.
In places where there is strong wind like seashore,
fix the Unit in a location protected from the Unit.
Carry the Unit to the installation site by observing
rules and limits set by Manufacturer
•Install the Unit
In order to avoid scratching or deforming the Unit’s
surface, apply guard boards to the contacting surface.
INSTALLATION4.
WARNING
•
Avoid contact of fingers or of other objects with the
vanes.
•
Don’t incline the Unit more than 45° in moving, and
keep it vertical when installing.
•
This system is very heavy: it needs to be carried by
2 or more persons, otherwise it might cause injury
and damage.
•
The circulating air for every Unit should be more than
700m3/h.
•
Make sure there is enough installation space.
•
Outline dimensional drawings: see Fig. 4-1 and Fig. 4-2.
•
Fig. 4-1
Fig. 4-2
Ø 568
568
Mod. HWMI 150A: 1430 Mod. HWMI 190A: 1580

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INSTALLATION
•Pipeline Connection Drawing
•Pipeline Connection Explanation
Installation of the water inlet or outlet pipes: the
specifications of the water inlet or outlet thread is
G3/4” (external thread).
Pipes must be heat-resistant and durable.
PIPELINE CONNECTION5.
•
Installation of the pipe for PT valve: the specifications
of the valve conncting thread is RC3/4” (internal thread).
After installation, it must be confirmed that the drainpipe
outlet is exposed in the air.
When flexible drainpipe is jointed to the pressure relief
orifice of this valve, it must be confirmed that the flexible
drainpipe is downwards vertically and exposed in the
air.
•
A safety valve should be installed at the water
inlet of the Unit.
Arrange water pipes and connected fittings as it is
shown in Fig. 5-1.
In case of installation in a place where outside
temperature is below freezing point, insulation must
be provided for all hydraulic components.
The handle of PT Valve should be pulled out once
per half year, to make sure that there is no jam of
the valve. Please beware of burn, because of the
high temperature of water.
The drainage pipe should be well installed, in order
to avoid freezing up in cold weather.
Do not press the handle of PT Valve.
Do not dismantle the PT Valve.
Do not block off the Drainage pipe.
If you do not comply with the above
instructions, explosions and injuries
may occur.
•
•
•
Installation of the One Way Va
lve: the specifications
of the One Way V
alve thread in accessories is G3/4”.
It is used to prevent backflow of water.
•
Installation of the Y
-shaped Filter: the specifications
of the Y
-shaped filter thread in accessories is G3/4”.
It is used to filtrate inlet water.
•
After installation of all pipes, turn on the cool water
inlet and hot water outlet and start effusing the tank.
When there is water normally flowing out from wate
r
outlet, the tank is full. Turn off all valves and check
all pipes. If there is any leakage, please repair.
•
If the inlet pressure is less than 0.15MPa, a pressure
pump should be installed at the water inlet.
For guaranteeing the long safety using age of tank
at the condition of water supply higher than 0.65MPa
,
a reducing valve should be mounted at the water
inlet pipe.
•
Since during the drainage, water leakages may
take place, it is recommended to use a water
collector, as it is shown in Fig. 5-2.
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•
•
•
NOTE
EXPLOSION
Handle
Drainage pipe
Fig. 5-1
User
Tap Water
Ball Valve
One Way Valve
Y-shaped Filter
Barrel-drain
Upper
Condensate Outlet
PT Valve
Water
Outlet
Water Inlet
Drainpipe
Lower Condensate
Outlet
Notice:
the mixer tap is required
on the hot water usage
terminal
Fig. 5-2
Max. 22mm
50mm larger
than the diameter
of Water Heater

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WIRING
Please choose the power cable according to the
above table and according to local electric standard.
ELECTRIC CONNECTION6.
For safety, a Creepage Breaker must be installed
on the Unit near the power supply.
Moreover, the Unit must be effectively earthed
(see Fig. 6-1).
•
•
•
•
•
•
The power supply for the Unit must correspond to the
rated voltage.
Earthing must be included in the power circuit. And
it must be connected with the effective external ground
wire.
The wiring must be performed byAuthorized Technicians
according to the circuit diagram.
Set the electric leakage protector according to the
current electric technical standards.
The power cord and the signal cord must be properly
laid out, without mutual interference or contacting
the connection pipe or valve.
After wire connection is finished, check it again and
make sure the correctness before supplying power.
CAUTION
WARNING
6.1 Specifications of Power Supply
Table 6-1
Fig. 6-1
6.2 Electric leakage protector
E
Power Cable with
Creepage Breaker
Creepage Protector
Plug/Socket
Power Supply
Check the voltage between L and N of powerline
with MULTIMETER: you will get a data (V1).
Also check the voltage between Land E of powerline
with MULTIMETER: you will get second data (V2).
If V1 - V2 ≤ 5V, the earthing could be viewed as
reliable.
•
•
If V1 - V2 > 5V, the earthing is not reliable, and
needs to be checked first.
•
If V1 - V2 = 0V, means no earthing connection in
the power supply. It is necessary to settle it before
installing the Water Heater.
(Other method of reliable earthing check is also
recommended, such as usage of MEGOHMMETER).
•
•Check Method of Reliable Earthing
15/10
Length > 5m
Length ≤ 5m
Model Name
Power Supply
Earth wire (mm2)
Creepage Breaker
Manual Switch(A)/Fuse
Min. Diameter of
Power Supply Line
(mm2)
HWMI 150A, 190A
220-240V~50Hz
1.5/3-core
2.5/3-core
2.0
30 mA ≤ 0.1sec

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WIRING
Fig. 6-2
T3: Tube Temp. Sensor
T4: Ambient temp. Sensor
T5L: Tank Temp. Sensor (lower)
T5U: Tank Temp. Sensor (upper)
TP: Discharge Temp. Sensor (upper)
Earthing
6.3 Wiring Diagram
N
ON
ON O
T1
E
LE
L NG
T5U
T5L
T3
T4
TP
T5U
T5L
T3
T4
TP
T3
T4
TP
220-240V
50 Hz
C
T4
1
24
3
C
H-A
G-B
G-A
E-E
G-C
E-F
H-E
H-D
H-C
G-D
G-E
H-G
H-H
U
T2
H-F
Compressor
Compressor
Main Control Board
Electric Heater (upper)
Electric Heater (lower)
Pressure Switch
TCO
Water Tank
Control Panel
TOD

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OPERATING INSTRUCTIONS
OPERATION INSTRUCTION7.
Fig. 7-1
Fig. 7-2
Before using this Unit, please follow the steps below.
Filling the Water Tank: if Unit is used for the first time or used again after emptying the tank, please make
sure that the tank is full of water before turning on the power.
Method: see Fig. 7-1.
7.1 Operation steps
Water Flow
Hot water outlet
Close
Water out
Open
Open the cool water inlet and hot
water outlet When water flows out from the water
outlet, the tank is full.
Turn off the hot water outlet valve
and water flow is finished.
Cool water inlet Hot water outlet
Open
After powered on, the display lights up. User can operate the Unit through the buttons for selecting different
modes which are displayed.
Emptying: if Unit needs to be cleaned, moved, etc., water tank must be emptied.
Method: see Fig. 7-2.
Operation without water in water tank may result in damage
of auxiliary e-heater.
Due to such damage, the Supplier is not responsible for the
quality issue.
If water temperature exceeds 50°C, this may cause serious
burns and death.
If water temperature is very high, special care should be
paid to children, disabled and aged people.
Emptying
Close
Open
Drainpipe
Open
Cool water inlet
Close the cool water inlet, open the
hot water outlet and open drainpipe.
Hot water outlet
Drainpipe
Close
After emptying, please replace the
nut of drainpipe.
CAUTION
CAUTION

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OPERATING INSTRUCTIONS
Display
ECONOMY MODE
ALARM
FILL WATER
HIGH TEMP
TIME ON TIME OFF TIMER
CONFLICT
TEMP-SET
OUTLET TEMP
HYBRID MODE
E-HEATER MODE
LOCK
HIGH TEMP indicator: When the setting temp. exceeds 50°C, it lights up to remind you that the outlet
temperature is too high.
FILL WATER indicator: When the power supply is turned on, it lights up to remind you that the water
tank must be filled up.
ALARM indicator: It flashes in case of malfunction or in case of a protection intervention.
TEMP SET indicator: It shows the setting temperature or Error Codes and Protection Codes.
LOCK indicator: When the Indoor Unit is locked, it always lights.
Water temperature indicator: When the actual water temperature exceeds 60°C, it lights up.
Water temperature indicator: When the actual water temperature exceeds 50°C, it lights up.
Water temperature indicator: When the actual water temperature exceeds 40°C, it lights up.
OUTLET TEMP indicator: It displays water temperature of the upper part of the tank, which can be used.
It always lights.
TIMER CONFLICT indicator: It lights up in case there is a conflict between Timer settings by control
panel and Timer settings by a wired controller.
TIME OFF indicator: It lights up when timing off mode is set.
TIME ON indicator: It lights up when timing on mode is set.
CLOCK indicator: It displays present time.
E-HEATER MODE indicator: It lights up when User sets the E-Heater mode.
HYBRID MODE indicator: It lights up when User sets Hybrid mode.
ECONOMY MODE indicator: It lights up when User sets Economy mode.
•

- 15 -
OPERATING INSTRUCTIONS
Buttons
ON\OFF
CLOCK
CANCEL MODE
TIME
ON TIME
OFF
ON/OFF key, used to
turn the Unit on or off.
CLOCK key, used to
set time. TIME ON key,
used to set the ON timer
for automatic start
of Water Heater.
TIME OFF key,
used to set the OFF
timer for automatic
stop of Water Heater.
MODE key, used
to set different
operation modes.
UP key, used to
add time or
temperature.
DOWN key, used to
decrease time or
temperature.
CANCEL key,
used to cancel
Timer and lock all
Unit’s keys
(LOCK function).
•
•
Preparation before running the Unit
When you run the Unit for the first time, all the indicators on the Unit will light for 3 seconds, while the buzzer
will ring twice.
After no operation for 1 minute, all indicators will go out automatically except FILL WATER indicator (flashing)
and WATER TEMP indicator (lighting, it shows tank’s temperature).
When the tank is full, please press the ON/OFF key: the FILL WATER indicator will stop flashing and you can
set your desired operation modes. When setting is completed, please press ON/OFF key again and the
FILL WATER indicator will go out. And then run the Unit.
When the Unit is running, if no selection is carried out or no malfunction occurs for 20 seconds, the backlight of
the display will go out automatically except operation mode, outlet temperature and LOCK indicator.
If there is no operation for 1 minute, the Unit will lock automatically (LOCK function).

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OPERATING INSTRUCTIONS
In order to prevent wrong operation, a special lock
function has been designed.
If there is no operation for 1 minute, the Unit will be
locked automatically, and display shows the Lock
indicator.
When the Unit is locked, no keys can be operated.
To unlock Unit, please proceed as follows:
The clock is for a 24-hour system and the initial time
is 00:00.
To make a better use of this Unit, it is recommended
to set the time for accurate local time.
Every time Unit is disconnected, the clock will be reset
to 00:00 and it will need to be adjusted again.
Unit has three operation modes: Economy Mode, Hybrid
Mode and E-heater Mode.
ECONOMY Mode: The Unit heats water only by
compressor drive according to heat-pump principle.
Used when the ambient temperature is high.
HYBRID Mode: The Unit heats water not only by
compressor drive but also by electric heater.
Used when the ambient temperature is low or a large
amount of hot water is needed.
E-HEATER Mode: T
he Unit heats water only by electric
heater.
Used when the ambient temperature is very low.
By default, the Unit operates in HYBRID Mode.
To change operation mode:
Temperature displayed is the water temperature in the
upper part of the tank.
Default is 65°C.
The Economy mode setting range is 38~65°C.
The Hybrid and E-heater mode setting mode setting
mode is 38~70°C.
In the following page, method for setting temperature
is shown.
Method for time set:
Fig. 7-3
Fig. 7-4
Fig. 7-5
LOCK/UNLOCK
•
Clock Set
•
Mode Selection
•
Temperature Set
•
CANCEL
At the locking status of Display, long
press the CANCEL key to remove it.
LOCK indicator will blank out and all
keys can be used normally.
Press CLOCK key: the minute
digits of the clock start flashing
slowly.
Press UP and DOWN key, you
can adjust minutes.
Press the UP and DOWN keys,
you can adjust the hour.
Press CLOCK key again or stop
operation for about 10 seconds,
flashing will stop and clock set
is successful.
Press the MODE key, operation mode will be
shifted among the three modes in a cycle,
meanwhile the corresponding indicator on
the display will light up. Select your desired
operation mode.
Press the CLOCK key again, the minute
digits stop flashing while the hour digits
starts.
CLOCK
CLOCK
MODE

- 17 -
OPERATING INSTRUCTIONS
User can set up a time for automatic start/stop of the
Water Heater, by Timer function.
Time can be set by min. steps of 10 minutes, in a
24-hour system.
Method for programming automatic start (TIME ON):
To cancel TIME ON:
Method for setting TIME ON/TIME OFF:
Programming the automatic start followed by automatic
stop of Water Heater (TIME ON and TIME OFF in
sequence):
User can set his desired time for automatic start and
stop of Water Heater.
When the start time is earlier than the stop time, the
Unit will run between the set time.
When the start time is later than the stop time (for
ex. start at 06:00, stop at 04:00), the Unit will run
between the start time today and the stop time next
day.
When User sets up the same time for start and stop,
the Water Heater will start according to the set start
time and will automatically stop after 10 minutes.
Fig. 7-6
Fig. 7-7
Fig. 7-8
Fig. 7-9
Timer
•
Press the UP and DOWN key, you can increase
or decrease the water temperature.
When the set temperature is higher than 50°C,
the HIGH TEMP indicator will light.
Press the TIME ON key, the minute
digits of the clock on the display
start flashing slowly.
Press the TIME ON key, the minute
digits of the clock on the display
start flashing slowly.
Press the UP and DOWN key, you
can adjust the minutes.
Press the UP and DOWN key, you
can adjust minutes.
Press the TIME ON again, the minute digits
stop flashing and the hour digits start.
Press the UP and DOWN key,
you can adjust the hour..
Press the TIME ON key again
and wait about 10 sec., flashing
stops and ON TIMER set is
finished.
In the unlocked state, press the
CANCEL key for 1 sec. and the TIME
ON function will be cancelled.
HIGH TEMP
TIME
ON
TIME
ON
CANCEL
TIME
ON

- 18 -
OPERATING INSTRUCTIONS
To cancel TIME ON/OFF set:
Time ON and Ti
me OFF cannot be set to the same time
.
If they are the same, the stop time will delay 10 minutes
automatically.
For example, Time ON and Time OFF set to 01:00 at
the same time, stop time will be to 01:10 automatically.
Time OFF function cannot be used alone.
The key can be used only after set the Time ON.
After selecting the desired settings, press ON/OFF
button and the Water Heater will start according to the
settings.
To stop the appliance, press again ON/OFF button.
The LA error code from the screen of set Temperature
will appear and reminds User when ambient temperatur
e
does not meet the operation conditions of heat pump
Unit (5~43°C).
User can switch the Economy mode to E-heater mode
to reach a higher volume of hot water if needed.
The Unit will return operation pre-status automatically
when the ambient temperature meets the operation
conditions of heat pump mode and the error LA will
disappear at the same time.
•
•
•
Fig. 7-10
Fig. 7-11
Fig. 7-12
In the unlocked state, press the
CANCEL key for 1 second, the TIME
ON/OFF function will be cancelled.
Stop operation for about 10 sec., flashing
stops and TIME ON + TIME OFF set is
finished.
CANCEL
TIME
OFF
TIME
OFF
TIME
ON
Press the TIME ON key again, the minute
digits stop flashing and the hour digits start.
Press the UP and DOWN keys, you can
adjust the hour.
Press the UP and DOWN keys, you can
adjust minutes.
Press the UP and DOWN keys, you can
adjust the hour.
Press the TIME OFF key again, the minute
digits stop flashing and the hour digits start.
Press the TIME OFF key, the minute digits
on the display start flashing slowly.
NOTE
Power ON and Power OFF
•
Operation status
•
ON\OFF
Warning! In case of a blackout, when power supply is
restored, the Water Heater will automatically restart with
previous settings, but Timer settings will be cancelled,
so it is necessary to set Timer again.
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OPERATING INSTRUCTIONS
If there is a malfunction, error code will be displayed
in the screen of set Temperature.
If you press CANCEL button, LA
error code will be
displayed for another 1 minute, then display will
show temperature value.
In case of continuous operation for 20 hours
and ambient temperature does not meet the
operation conditions of heat pump (5~43°C
range), LA code will be displayed and ALARM
indicator will flash.
In this case, it is possible to select E-HEATER
mode only.
Please switch to E-heater mode manually to
ensure that normal operation of appliance is
restored (LA code will disappear and ALARM
indicator will stop flashing).
If some errors happen, the buzzer will buzz 3 times
every other minute and the ALARM indicator will
flash quickly.
Press CANCEL button for several seconds to stop
the buzzer, but ALARM indicator will keep on flashing.
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If a malfunction occurs while system works in
Economy mode, operation may keep on if E/heater
mode is selected.
When some error happens, though the system
could be used in some circumstances, it could not
reach the expected efficiency.
Please contact the Authorized Technical Service.
Error Code Explanation: see further on, Tab
le 10/2.
• Whatever intervention on Water Heater
mustbecarried outbyAuthorizedTechnical
Service, as there is danger of electric
shocks.
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Fig. 7-16
Fig. 7-17
Press CANCEL key to stop
the buzzer.
Visualizzazione del Codice
di Errore.
Error Code which means a conflict
with operating conditions of heat
pump
ALARM indicator flashes to
indicate there is a malfunction
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CANCEL
Error Display
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TEMP-SET
Error Code which indicates that
there is a conflict with the operation
condition of heat pump
TEMP-SET
ALARM
ALARM indicator flashes to
indicate that there is a malfunction
ALARM
Fig. 7-13
Fig. 7-14
Fig. 7-15
TEMP-SET
WARNING

- 20 -
TRIAL RUNNING & CAPABILITY
RUNNING AND CAPABILITY8.
Before running, please check the following items first:
Correct installation of the system;
Correct connection of pipeline and wiring;
Leakage of the refrigerant pipeline tested;
Efficient drainpipe;
Complete insulation protection;
Correct earthing;
Correct power supply;
No obstacle outside the air inlet and outlet;
No air in the water pipeline and all valves opened;
Effective electric leakage protector;
Sufficient inlet water pressure ( ≥ 0.15MPa)
Three heating elements are included in the Unit: one heat pump and two electric heaters, which are installed
in the upper 1/4 and at the bottom of Unit.
All these three heating elements do not work together.
This Unit has two temperature sensors, which are installed at the upper 1/4 and bottom 1/4 of Unit.
The upper sensor tests the water temperature in the upper part of Unit (shown by display); the bottom
sensor tests the water temperature in the bottom part of Unit and controls the ON/OFF of Unit itself (the
temperature value is not displayed).
H
YBRID Mode: In this mode, the system will adjust the working capabiities of e-heater and heat pump accordin
g
to the tank water temperature.
(Water outlet temperature range 38~70°C, running temperature -30~43°C).
E-HEATER Mode: In this mode, the compressor and the fan motor will not run but the e-heater works only.
(Water outlet temperature range 38~70°C, running temperature -30~43°C).
8.1 Trial Running
8.2 Operating Capability
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Water Heater Operating Capability
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ECONOMY Mode: In this mode, only the HP system works. If the ambient temperature is higher than 43°C
or lower than 5°C, the HP system cannot work.
(Water outlet temperature range 38~65°C, running temperature 5~43°C).
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Tank
Upper sensor
Bottom sensor
Upper electric heater
Lower electric
heater
Outlet
Inlet