Ecotec EAS SERIES Instruction Manual

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
1
INSTALLATION & USER MANUAL
EAS SERIES
for Space heating and cooling
System description…………………………………… 2
Declaration of conformity…………………………… 2
Installation details…………………………………… 3
Safety precautions …………………………………… 3
Transportation & storage…………………………… 3
Before starting installation…………………………. 3
Installation sequence ………………………………. 3
Inspection of installation …………………………… 3
Locating the heat pump…………………………… 4
Protection ……………………………………………… 4
Ventilation……………………………………………… 4
Drainage………………………………………………… 4
Placement checklist…………………………………… 4
Radiator heating system.................................... 5
In-floor heating system..................................... 6
Connecting the heat pump................................ 7
Flushing the heating system.............................. 7
Connecting to heating system........................... 7
Commissioning the heat pump.......................... 8
Operating temperatures.................................... 8
Maintenance...................................................... 9
Technical specifications EAS 700/1000.......... 10
Technical specifications EAS 1500/2500........ 11
Tips to Increase savings................................... 12
Wiring diagram................................................ 13
Replacement parts list...................................... 13
Troubleshooting guide…………………………… 14
Installation and maintenance guide
This manual is designed to provide the
information necessary to correctly install and
operate the Heat Pump.
The guide lists topics in the order that we, as
manufacturers, recommend all installations and
commissioning should be carried out.
All Ecotec Heat Pumps must be installed by a
licensed, authorised or qualified heat pump
installer. The Installer should be familiar with
local building regulations, exacting Health and
Safety Regulations and building control
requirements where appropriate.
There are no refrigeration connections or
refrigerant requirements since all Ecotec units
come pre-charged from factory and are leak
tested prior to delivery.
Copyright © Ecotec Heat Pumps Ltd –E&OE

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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EAS heat pumps are designed for “Hydronic” water
based heating systems and can be used in
conjunction with other heating systems such as
electric, gas or oil boilers and solar collectors.
EAS air-source (air to water) heat pumps are
designed to operate efficiently in cold climates and
in temperatures down to - 20c.
Air-source heat pumps make use of free renewable
energy from the outside air, heated by the sun and
exhaust only cool air and condensation water. Air-
source heat pumps do not require costly drilling,
digging or ground loops as with geothermal units.
EAS heat pumps are designed for easy installation,
and only require connection to heating system,
electrical supply and a thermostat or control system.
System description
EAS is designed to heat water solutions up to 60C
for heating applications. Temperature setting
should be set according to the type of heating
system being used.
EAS can be used to heat domestic and potable
water via external heat exchanger or “cholrifier”
cylinder system that indirectly heats the water.
EAS units should not be used for direct heating of
potable water.
EAS is not intended for direct heating of corrosive
agents such as chlorine used in swimming pools
and Jacuzzi baths which can damage internal
components. An external heat exchanger and
circulation pump can be used for swimming pool
and spa heating applications.
Declaration of conformity
Ecotec EAS heat pumps have been designed, tested and approved in accordance with BS EN 14511 2004.
Ecotec EAS air-source heat pumps are fully tested before leaving the factory and comply with all current EC directives.
Relevant EC Council Directives: Machinery Directive (98/37/EC)
EMC Directive (89/336/EEC in the versions 93/68/EEC)
Low Voltage Directive (73/23/EEC in the version 93/68/EEC)
Applied harmonised standards: EN 292-1:1991, EN 292-2:1991, EN 294:1992, EN 349:1993, EN 55014 -1:2000, EN
55014-2:1997, EN 60335-1:2002, EN 60335-2-40:2003, EN 61000-3:1995 BS EN
14511-Pts 1 to 4:2004, EN378:2000, BS848-5:1999
Basis of self attestation: BS EN ISO 9001:2000 BSI registered firm certificate no. FM671

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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Safety precautions
For safety reasons the main power supply should be
disconnected before working on the Heat Pump.
Never use a main circuit-breaker to start and stop
the unit. Each unit is fitted with a power switch.
Do not insert objects into the air vents on the
outdoor section. This is dangerous as the fan blades
rotate at high speed.
Transportation and storage
The Heat Pump must always be transported and
stored upright and dry. Never lay the unit down on
its front, side or back. When lifting the unit it should
be tilted compressor side down. Upon delivery,
unpack the and check that pipe fittings are not
damaged.
Before starting the installation
The proper power supply should be allocated for
each unit. A separate circuit breaker is
recommended for multiple unit installations. Check
product specifications for power connection ratings
Items required for installation (not included)
1. Water circulation pump. Check product
specifications for proper water flow ratings.
2. Water line particle filter.
3. Shut off valves for both inlet-outlet lines.
4. Control unit (optional)
Installation sequence
1. Position the heat pump on solid base or
footing (see locating the heat pump)
2. Install pipe work using pipe rated for the type
of installation and operating temperatures.
3. Install hot water pump and particle filter
4. Flush line to clear debris from pipes.
5. Connect the heat pump to the heating system
6. Install control unit and auxiliary heating unit (if
required)
7. Install flow sensor, outdoor sensor and room
sensor if used.
8. Connect electrical lines between the Heat
pump and backup heater / control unit.
9. Connect the heating system to the Mains
power supply using safety switch and circuit
breaker (ground fault breaker)
10. Fill and vent the heating system before
commissioning.
11. Commission the installation by making the
necessary setting on control panel (see control
unit user guide)
12. Check the heating installation after
commissioning
Inspection of installation
Check with your local building regulation
requirements which may require that heating
installations are inspected before being
commissioned.
The inspection should be done by a qualified person
and documented. In the event that a heat pump is
being replaced, the installation may require
Inspection again, before re-commissioning.
Danger fan blades rotate at high
speed!
Never let children play near the unit!

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The heat pump and floor stand must be positioned
on a solid level surface. Avoid installing the heat
pump close to sensitive walls such as bedroom
walls, since the pump produces a limited amount
of noise and vibration when running.
Protection
The unit is designed for outdoor use and exposure
to the elements including direct sunlight. It is
advisable to shelter the unit from strong wind, and
snow drifts. Falling snow or ice from eaves can
damage the unit so it is recommended that a roof
be installed for added protection.
Ventilation
Proper ventilation around the unit is important so
it should not be placed in small enclosed spaces
or rooms that could restrict the fresh air supply to
the unit. Proper clearances should be maintained
around the heat pump so that air can flow freely
through the heat exchanger.
minimum distance from a wall is 30 cm (12”)
If multiple units are installed side by side,
minimum recommended space between units
is 40cm (16”)
Free space in front of the unit 3m
Drainage
The heat pump produces water from condensation
and the defrosting process. Installing it close to
pathways or staircases should be avoided because
of the risk of slip hazards from ice buildup.
Condensation in humid climates can be in excess
of 30 liters per day so proper drainage around the
unit is important.
Placement checklist 
Units should be placed outdoors for
unrestricted air supply.
Do not install the unit in areas where smoke
or gases collect
Do not install the unit in extremely damp or
steamy areas.
Do not install the unit in areas where
excessively high heat-producing equipment is
located.
Locate the unit close to the hot water storage
cylinders / usage areas to reduce piping and
heat loss.
The unit must sit level, the use or footings or
a raised plinth is recommended.
Units with tanks sit on frame footings, care
should be taken to elevate units in case of
flooding.
Units can sit freely on a hard flat surface
provided it can maintain the weight of the
unit.
Units without tanks may be wall mounted
using load rated metal brackets or floor
mounted.
Side and front panels should be easily accessible
allowing for periodic cleaning. (See maintenance
guide)
Do not to block the air intake vents which are
located on the rear of the unit. Minimum
clearance is 30 mm (12”) between the air
intake and wall to allow for proper air flow.
Avoid locations that cause recirculation of
cold air exhaust, since this reduces the heat
output.
Outdoor pipes must be well insulated to
prevent heat loss and freezing.
Locating the heat pump

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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EAS HEAT PUMP
CIRCULATING PUMP
EXPANSION TANK
BY-PASS VALVE
AUTOMATIC AIR
VENT
THERMAL STORE
Radiator heating systems
Radiator sizing: Always look to use high efficiency
radiators. Convection radiators are a good option.
Radiators should be sized to heat the room with an
entering water temperature of 50°-60°c. This
should be checked with the radiator manufacturer
as different radiators will require varying output
factors.
System design: EAS heat pumps are designed to be
part of a fully pumped pressurised system; fitted
with a variable speed pump and require a suitably
sized diaphragm expansion vessel automatic air
bleed, pressure gauge and a filling loop
incorporating a stop valve, double check valve with
test point and removable flexible hose. A safety
(pressure relief) valve should also be fitted, set to
lift at a maximum pressure of 3 bar. The heat pump
should always be used with a reverse return
heating circuit to ensure equalization of pressure
losses to all parts of the system.
Thermostatic radiator valves: TRV’s should be fitted
in accordance with building regulations. To ensure
adequate water flow to the heat pump the radiators
in the room with the thermostat should be left open
without TRV’s. In addition a bypass should be fitted
in the system to prevent loss of flow which could
result in the heat pump cycling on and off more
regularly than it should due to the reduced
temperature drop caused by too little heat transfer.
Pipe work: In order for the heat pump to work
efficiently it is important to size the system pipe to
minimise the pressure drop and ensure adequate
flow at all times. Severe pressure drops and low flow
will result in reduced performance and possible
tripping of the heat pump protective circuit.
Filling a radiator system: The radiator system should
have its own expansion tank. Open the tap between
the cold water system and the heating system in
short intervals and then close it and note the
pressure gauge reading. When the system is full or
the right pressure has been reached, vent the system
and top it up if necessary

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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Hydronic Under-Floor heating systems
Underfloor radiant heating systems are well suited
for heat pump applications because of the lower
operating temperature (35°C typically) of the
heating medium. Unlike conventional boilers, a
heat pump can supply the heating medium at the
correct temperature to the heat emitters, without
the need for mixing headers. The system efficiency
is improved as power is only being used to raise the
heating medium to the correct working
temperature.
System configuration: The floor is the heat emitter
and is of considerably greater mass than other heat
emitters such as radiators. Because of this it takes
much longer to raise the floor temperature on
initial start up, although once operating it will stay
at the correct temperature due to thermal mass
Because heat pumps generate a lower temperature
heating medium there is a problem if the whole
floor area is opened up to the heat pump on initial
start-up of the system. The high heat losses into a
cold floor will prevent the heating medium
reaching the correct operating temperature and
ultimately could cause the heat pump to frost up.
To overcome this problem the best solution is to
fit a thermal store between the heat pump and the
heating system so that the heat pump is raising the
temperature within the store and not directly
within the floor. In addition the heating system
should be split into a number of zones to allow for
variations in heat load and to improve start up at
the commissioning stage.
DIAGRAM SYMBOL KEY
EAS HEAT PUMP

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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Connecting to heating system
A particle filter should be fitted on the water inlet
side as close to the heat pump as possible. The
particle filter removes dirt and debris that can
damage the unit. Therefore, it must always be
fitted on the incoming hot pipe to remove debris
before entering the heat pump.
We recommend using flexible hoses at the inlet/
outlet connections to avoid vibration transfer
between heat pump and pipe system.
Shut off valves and drain valves should be fitted to
facilitate maintenance and draining incase of
prolonged power failures
Pipe diameter should be matched to water flow
requirements, (see product specifications)
Outdoor pipes must be properly insulated with
material that will not absorb moisture. Minimum
recommended insulations thickness is 19mm (3/4”)
Sensor cables and communication lines should be
separated from high voltage cable by 20cm (8”) to
prevent interference.
The total water volume in the heating system
should be at least 20 liters of water per kW of
heating output.
Flushing the heating system
Ensure that the pipe system has been thoroughly
flushed-out to remove debris before connecting the
heat pump. Poor water quality in the heating
system can reduce heating efficiency and cause
damage to the heat pump. Leaks in the system can
allow air to enter the lines. Oxygen in water lines
causes corrosive sediments such as magnetite which
has an abrasive effect on valves and heating
components.
Heating systems that require regular filling, or where
heating water is not clear when drained, require
remedial measures before installation; such as
fitting filters and vents. Do not use treatment
additives except agents for raising the pH level in
heating line water.

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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Commissioning the Heat Pump
1) Before the heat pump goes into service, the
heating system must be filled up and
completely vented.
2) Check that there are no leaks in the system.
3) Always ensure that circulation pumps are
on and that there is heat medium
circulation when connecting to an existing
water system.
4) With in-floor heating: turn off all but one of
the circuits in the building for
commissioning.
5) With radiators: turn off half the radiators in
the building for commissioning.
6) With fan-assisted radiator system the fans
in the radiator are controlled and the valves
on the fan-assisted radiators are opened
fully. In a fan assisted radiator system, the
water volume is small. During defrosting
the heat pump will draw heat from the lines
cooling it down temporarily. It is important
that the fans in the radiators run during
defrosting. It is recommended that an
expansion tank of at least 100 Liters (25
gallons) is used to increase water volume to
reduce cooling effect during defrosting.
7) Turn the room thermostat up to 30°C. The
return water temperature is displayed on
the controller. Wait for the temperature to
read 43°C (radiators) or 33°C (in-floor) and
then open each radiator or zone one at a
time, waiting for the return water
temperature to rise each time.
8) Once the whole system is open allow the
water temperature to rise to the normal
operating temperature of 50°C to 60°C for
radiators or 35°C for in-floor heating.
9) The unit may go into defrost during the
commissioning due to low temperatures.
This is normal and there may be small drops
in the water temperature during defrost
cycles.
Operating temperatures
Maximum: The heat pump can operate up to a
maximum return temperature of about 60C. Above
that temperature the heat pump stops for reasons of
safety.
The maximum outgoing temperature from the heat
pump is about 65c. Depending on the outdoor
temperature. Higher temperatures can be achieved
by using an auxiliary heating system.
Minimum: The heat pump is designed to operate to
-15C; at temperatures below this point an auxiliary
heating system will be required.
NOTE: On 3 phase units it is possible for the
scroll compressor to run backwards. This
becomes obvious on start up, there will be no
significant rise in water temperature from the
unit.
(Normal rise approximately 1°C per minute)
The top of the compressor will not become
warm and it may be excessively noisy. If this
happens, switch off the mains power and
exchange two of the supply phases this will
correct the rotation.

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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Maintenance
Ecotec Heat Pumps are designed for long life and
trouble free operation if installed and maintained
properly.
Make routine checks throughout the year to see
that the intake vents are not obstructed by snow,
ice or leaves. Clear snow or ice from the fan grill,
intake vents and from below the unit.
Cleaning
Care should be taken to keep the fins (evaporator
coil) and fan blades clean. Clean fin surfaces will
result in higher system performance and energy
efficiency.
Cleaning should be done every (6) months in
areas with poor air quality (high particulate
value).
Cleaning should be done every (12) months in
normal air quality environments.
Clean units using mild detergent and water. Take
care not to damage or bend evaporator coils while
cleaning.
Care should be taken to keep the drain holes at the
base of the unit free of debris to ensure proper
condensate drainage. A drainage channel below
the drain holes is recommended to prevent
condensation build up around the base of the unit.
For sea side installation extra attention must be
given to cleaning the units to remove salt buildup
which will cause rusting. For high corrosive
environments we recommend Marine Grade Heat
Pumps which are specially designed for salt spray
environments.
(Marine Grade Heat Pumps are available as a
special order).
Risk of freezing
Note that the heat exchanger is located outdoors,
which involves a risk of freezing in the event of a
power failure.
Drain the heat exchanger when a power
failure longer than one hour in low
temperatures occurs (-1C or lower).
The circulation pump must never stop when
the heat pump is running.
The circulation pump must operate even
when the heat pump has been stopped in
cold weather to prevent water from freezing
in pipes.
10 point annual maintenance plan
1. Clean Heat Pump Cabinet
2. Clean Evaporator Coil
3. Check and Clean Condensate Drains
4. Check Fan Blade Clearances
5. Check Flow/Pressure Switch
6. Check Electrical Connections
7. Check Refrigerant Levels
8. Check Air Temperature Change Through
Evaporator
9. Check Water Temperature Change Through
Condenser
10. Check Water Flow
Always turn power “OFF” before
cleaning
or servicing the heat pump

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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TOP VIEW
ACCESS
PANEL
LEFT FRONT RIGHT BACK
WATER
CON N EC TIO N S
ACCESS
PANEL
Model
EAS 700
EAS 1000
Heating capacity*
kW
7
10
COP heating *
3.9
3.7
Electrical supply (230V)
V/Hz/phase
230/50/1
230/50/1
Power consumption (Input)
kW
1.8
2.7
Full load current
Amps
17.2
22.6
Electrical supply (380V)
V/Hz/phase
380/50/3
380/50/3
Power consumption (Input)
kW
1.79
2.73
Full load current
Amps
3.9
5.6
Refrigerant type
R134-A
R134-A all models
Compressor
Sanyo hermetic scroll compressor
No. of compressor / circuits per unit
1/1
1/1
low/ high pressure switch
bar
0.5/28
0.5/28
Heat exchanger
Stainless steel plate heat exchanger
Fans
PE or aluminum propeller type –Direct drive, 4 blade
No. of axial fan
2
2
No. fan Steps
3 step- off / low / high –automatic selection
Hydraulic circuit
External pump - to be specified by installer
Recommended water flow rate
Lt./sec
0.38
0.54
Diameter of pipe connections
mm / inch
25 / 1"
25 / 1"
Temperature controller
Carel, PJ series –optional equipment
Output temperature
Deg. C
Radiators 50/ in-floor 35- 60maximum
Defrosting (automatic)
Hot gas line with 4 way valve - one defrost cycle per hour
Housing Dimensions
Galvanized steel 1.2 mm - powder coat finish
Height
Mm
1250
1250
Width
Mm
1100
1100
Depth
Mm
390
390
Sound level @ 1 meter
dB(A)
47
47
Weight
Kg
150
164
Accessories / options:
* Ratings at 7c ambient air
Soft starter installed for single phase only
45c water heating
Marine Grade - Zincalumehousing, copper coils and brass endplates
Reverse cycle for heating and cooling function
Electronic control unit (thermostat)

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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ACCE SS P ANEL
TOP VIEW
WATER
CON N EC TIO N S
ACCE SS P ANEL
LEFT FRONT RIGHT BACK
Model
EAS 1200
EAS 1500
EAS 2500
Heating capacity*
kW
12
15
25
COP heating *
3.7
3.6
3.6
Electrical supply (230V)
V/Hz/phase
230/50/1
230/50/1
N/A
Power consumption (Input)
kW
3.3
4.6
---
Full load current
Amps
27
34
---
Electrical supply (380V)
V/Hz/phase
380/50/3
380/50/3
380/50/3
Power consumption (Input)
kW
3.27
4.2
6.9
Full load current
Amps
6.7
8.4
13.5
Refrigerant type
R134-A
R134-A all models
Compressor
Sanyo hermetic scroll compressor
No. of compressor / circuits per unit
2/2
2/2
2/2
low/ high pressure switch
bar
0.5/28
0.5/28
0.5/28
Heat exchanger
Stainless steel, plate heat exchanger
Fans
PE or aluminum propeller type –Direct drive, 4 blade
No. of axial fans per unit
4
4
4
No. fan Steps
3 step- off / low / high –automatic selection
Hydraulic circuit
External pump - to be specified by installer
Recommended water flow rate
Lt./sec
0.65
0.81
1.35
Diameter of pipe connections
mm / inch
25 / 1"
25 / 1.5"
25 / 1.5"
Temperature controller
Carel, PJ series –optional equipment
Output temperature
Deg. C
Radiators 50/ in-floor 35- 60maximum
Defrosting (automatic)
Hot gas line with 4 way valve - one defrost cycle per hour
Housing Dimensions
Galvanized steel 1.2 mm - powder coat finish
Height
Mm
1250
1250
1250
Width
Mm
1800
1800
1800
Depth
Mm
500
500
500
Sound level @ 1 meter
dB(A)
47
47
47
Weight
Kg
180
220
255
Accessories / options:
* Ratings at 7c ambient air
Soft starter installed for single phase only
45c water heating
Marine Grade - Zincalumehousing, copper coils and brass endplates
Reverse cycle for heating and cooling function
Electronic control unit (thermostat)

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
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Tips to increase savings
The lower you can keep the temperature of the
radiators in the house, the better your heating
economy. So make sure not to set your thermostat
too high. Run your heating system as efficiently as
possible by making sure that the entire surface of
your radiators or your in-floor heating coils are
kept hot. Thermostatic valves on your radiators or
floor heating may have a negative effect on your
heating system because they restrict the flow so
that the system has to compensate with a higher
water temperature. If thermostat valves are fitted,
they should be fully opened, except in bedrooms,
where they can be turned down slightly.
Important points to check
For optimum heat pump performance, it is
important to check the flow on the water out (hot
side) of the heat pump. The circulation pumps
usually have a speed selector switch; this must be
set correctly for the pressure drop in the systems.
The recommended temperature difference across
the heat pump on the hot side is 7 °C. The nominal
flows stated in the Technical data section gives a
difference of 5 °C in the +7/45 °C operating
condition. The easiest way to check this is to us an
electronic thermometer. The flow through the
radiator system must be high enough to guarantee
that the entire surface of the radiators is kept hot.
This maximizes the heat-radiating surface and
keeps down the flow temperature from the heat
pump. After testing, vent the system again and top
up with fresh water if necessary.
Fan control
Three step fans are controlled by a pressure switch
on the refrigerant circuit. This can be adjusted if
necessary to ensure the high speed is engaged with
a low outdoor temperature.
Defrosting principle
The principle of defrosting on the Ecotec EAS heat
pump is known as hot gas defrosting. The heat
pump automatically defrosts your heat pump. You
do not have to be involved. It involves the reversal
of the flow in the refrigerant circuit using an
electrically-controlled four-way valve. The
compressed gas from the compressor is led into the
evaporator, causing the ice on the outside to melt.
During this process, the temperature or water is
cooled slightly. As mentioned, the defrosting
process is controlled automatically by a defrosting
module, which measures the refrigerant
temperature and starts the time controlled interval
between each defrosting phase. The time required
for defrosting depends on the amount of ice and the
outdoor temperature.
Strictly as an example guide, minus 10oC can take 3-
4 minutes. Do not rely upon this guide as being
accurate. It is to give you an example defrosting
time. Different temperatures and conditions
coupled to individual temperatures desired by the
user or dwelling will alter these guide times; longer
as well as shorter should be expected.
Warranty Notice
Improperinstallationresultinginblockedairflowtounit,oritemsplacedinfrontofairIntakeventswillresultinvoidedwarranty.
Improperventingofexhaustaircouldcausetheunittoiceupifcoldaircannotescapeaspersystemdesign.
OnlyanauthorisedEcotecServiceTechnicianisallowedtoservicetheequipment.Anyworkcarriedoutbyanun-authorised
technicianmayresultinavoidedwarranty. PleasecontactyourDealerforauthorisedservicetechnician.

VPLV User Manual
Troubleshooting guide
The majority of heat pump failures are caused
by: thermostat malfunctions / tripped circuit
breaker / or blown fuse. If the heat doesn't
come on after adjusting the thermostat to a
setting above room temperature try the
following:
Heat Pump will not start
6) Check that power is being supplied to the
Heat pump
7) Check that the circuit breakers are not
tripped.
8) Check that the wiring is hooked up
correctly, and in the correct phase for 3
phase models.
9) Check that the thermostat is set correctly.
10) Check to insure that the circulation pump is
working.
11) Check the particle filter and clean if
necessary.
12) Check the manual reset high pressure
switch and reset it if necessary.
No heat
Be sure the thermostat is set to [Heat]
1) Be sure the heat pumps circuit breaker is on
or that its fuse has not blown.
Check both the main electrical panel and
any secondary sub-panels that supply
power to the unit. If the circuit has blown
or tripped, reset the circuit breaker or
replace the fuse. If the circuit blows again,
there is a probably a short in the electrical
system providing power to the heat pump.
Call an electrical contractor.
2) Check the heat pump's power switch is
“ON”
3) Check the circuit breakers on the heat
pumps electrical panel
4) Check the pressure safety switch: your heat
pump is protected by High and Low
pressure safety switches that will activate if
water line pressure is too high or low.
Tripped Low pressure switch
The low pressure switch is an automatic re-
set
Tripped high pressure switch
The High pressure switch is a manual re-set.
Remover the control panel cover reset the
High pressure switch
Action: check that the system has been
vented correctly. Check that the particle filter is
not blocked. Check that the circulations pump
is working. Check that shutoff valves are open
6) If it still doesn't work, be sure the
thermostat isn't faulty
7) If none of this works, call your heat pump
engineer or repair technician.
Insufficient heat
If your heat pump runs and provides some heat
but not enough:
1) First be sure the thermostat is set properly.
Try raising the temperature setting 5
degrees and waiting a few minutes.
2) Be sure nothing is blocking the flow of
warm air.
3) Check the heat pump particle filter. If it's
dirty clean it.
4) If these simple steps don't work, have a
heat pump repair technician check your
system.
Heat pump trips circuit breaker
EAS models are not fitted with auxiliary heaters
however other heat pumps can be - auxiliary
heating elements are used in defrost cycles
with Swedish heat pumps. They can also be
used to provide heat when the weather gets
too cold causing the heat pump's efficiency
drop. These elements are automatically turned
on by the system, they may be drawing too

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14
much power, which trips the circuit breakers.
Locate the circuit breaker that serves the
auxiliary heating system and reset it.
Heat pump turns on and off too often
If your heat pump cycles off and on too
frequently, the problem is likely to be with the
thermostat. See the thermostat-related
problems below for information on repairing
this problem.
When a heat pump turns off and on too
frequently, the problem may be that the unit is
overheating because of blocked particle filter.
Try cleaning or replacing the filter if that
doesn't work, call a heat pump repair
technician.
Room temperature goes too high or too
low
When room temperature rises higher or drops
lower than the set temperature on the
thermostat, it usually means that the
thermostat is improperly calibrated or installed
where it doesn't sense a proper sampling of
room air.
Heat pump runs noisy
If the heat pump makes rattling noises when it
runs, be sure the cover panels are screwed on
tight.
Check fan blades to make sure they are not
damaged or obstructed.
Heat Pump runs continually
If your heat pump runs continually on a
moderately cold day, it might be an air flow
problem or a refrigerant problem. Air flow can
be interrupted by a dirty coil or blocked intake
vents.

© Ecotec Heat Pumps Ltd | Installation Manual & User Guide
15
Wiring diagrams:
Serviceable parts list
If required, the following parts are available from your authorised installer.
Soft starter
4-way valve
Fan motor
Fan blades
Phase PR
3 minute time relay (Danfoss)
High Pressure switch (Danfoss)
Low Pressure (Danfoss)
Dryer 2-way
Receiver
Accumulator
Corner posts
Compressor, Sanyo (model 700/1500)
Compressor, Sanyo (model 1000/2000)

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16
Make a note before you forget

VPLV User Manual
Company Name
Street Address
Town Post Code
Customer Name
Street Address
Town, Post Code
Please take a moment to write down the following
information. If you should ever need to call us for
service or a question, we will need this information:
Model Number:___________________________________
Serial Number:___________________________________
Purchase Date:___________________________________
Installer Name/Address/Phone:___________________
__________________________________________________
__________________________________________________
Company Name
Street Address
Town, Post Code
Phone:
Phone number
Fax:
Fax number
E-Mail:
E-mail address
Taking the
Heat out of
Global
warming!