Sanden GAUS-315QS User manual

Sanden Heat Pump – Owner’s Manual
Page 1 of 20
Covering model numbers for residence
GAUS-315QT
GAUS-315QS
GAUS-250EQTB
GAUS-160EQTB
Heat Pump Unit GS3-45HPA-AU
This appliance is not to be used by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction.
Children being supervised not to play with the appliance.
Owner’s
m
anual

Sanden Heat Pump – Owner’s Manual
Page 2 of 20
Contents
Page title..............................................................................................................................1
Contents ..............................................................................................................................2
Introduction..........................................................................................................................3
How it works ........................................................................................................................3
Installation details................................................................................................................8
Trouble shooting guide ........................................................................................................9
Error Codes .......................................................................................................................10
Removing air from the system...........................................................................................11
Electrical connections........................................................................................................12
System operation outline continuous power ......................................................................12
System operation if connected to off-peak electricity.........................................................12
How to connect power line.................................................................................................13
Water supply Quality..........................................................................................................14
Change of water supply.....................................................................................................14
Technical data ...................................................................................................................15
Warranty Policy..................................................................................................................17
Warranty Period.................................................................................................................18
Registration for warranty....................................................................................................19
PATENTS
This water heater may be protected by one or more patents or registered designs
in the name of Sanden Australia Pty Ltd
TRADE MARKS
® Registered trademark of Sanden Australia Pty Ltd
.
Note: Every care has been taken to ensure accuracy in preparation of this publication.
No liability can be accepted for any consequences that may arise as a result of its application No liability can be
accepted for any consequences that may arise as a result of its application. Sanden is in a process of
continuous improvement with, therefore specifications may be different to those referenced in this manual –
Please contact Sanden International or it’s distributors for the latest specifications at the time of install.

Sanden Heat Pump – Owner’s Manual
Page 3 of 20
Introduction
The Sanden Heat Pump Water Heater System has been designed using the latest
refrigeration technology to remove the heat from the air to heat water. The refrigerant we
use is CO
2
which does not contribute to global warming so it allows us to help keep a clean
healthy earth for future generations.
We have also considered the power requirement. By using CO
2
as the refrigerant we have
produced one of the most energy efficient units currently available. It’s even more efficient
when connected to off-peak power and the noise level is so low it will operate
unobtrusively throughout the night.
How it works
The Heat Pump Water Heater System heats water by transferring the heat from the
surrounding air to the water using a refrigerant. The refrigerant is heated by a heat
exchanger that absorbs heat from the surrounding air (Figure 1).
Figure 1: Heat Pump Water Heater System
Note
Operating conditions may vary depending on the type of off peak tariff that is available in
your area. The unit must have a minimum of 5 hours continuous power available at all time
to allow the unit to operate without affecting reliability.

Sanden Heat Pump – Owner’s Manual
Page 4 of 20

Sanden Heat Pump – Owner’s Manual
Page 5 of 20
LPG

Sanden Heat Pump – Owner’s Manual
Page 6 of 20
Check the installation conditions of the unit.
Installat on of the un t n the follow ng places could result
n acc dents or fa lure and the performance of the un t
not be ng guaranteed.
· Anywhere the lowest temperature reached s under
m nus 20 degrees cent grade
· Indoors (Appl es only to the heat pump un t)
· Anywhere not completely flat, unstable or where
dra nage s d ff cult
· Ensure not to put anyth ng around the heat pump un t.
Could result n poor performance and unexpected
problems.
In the w nter n part cular please pay attent on to any
snow coverage.

Sanden Heat Pump – Owner’s Manual
Page 7 of 20

Sanden Heat Pump – Owner’s Manual
Page 8 of 20
Installation details
This Sanden Eco Hot water Heat Pump System must be installed by a licensed person in
consideration of the following standards and regulations:
AS/NZS3500 National plumbing and drainage code hot water supply systems –
acceptable solutions
HB 263-2004 Heated water systems plumbing industry commission
AS/NZS 3000 Electrical installations (known as the Australian/New Zealand wiring
rules)
Notice to Victorian customers from the Victorian Plumbing Industry Commission.
The Victorian Building Act 1993 requires that this Heat Pump Water Heater System
must be installed by a licensed person. Only a licensed person will provide a
Compliance Certificate, showing that the work complies with all the relevant
standards. Only a licensed person will have insurance protecting their workmanship
for six years.
The unit has been specifically designed for domestic hot water heating and is not
suitable for any other purpose.
The unit is designed to operate when connected to the town water supply with a
maximum operating pressure of 500 kPa. To ensure the mains pressure does not
exceed this, a pressure-limiting device that complies with AS1357 must be
connected to the town water supply line.
This system delivers hot water exceeding 50
o
C. Reference should be made to
AS/NZ3500 and/or local regulations relating to the need for temperature tempering
devices.
The unit must be stored and transported in an upright position. Failure to do so may
render the unit faulty. Such failure is not covered under any warranty agreements.
Failure to comply with the above conditions will void the warranty.
Figure 2: Typical installation layout
Pressure Reducer Valve
500kPa

Sanden Heat Pump – Owner’s Manual
Page 9 of 20
Trouble shooting guide
If you faced to a problem in a use of our heat pump water heater system, please check the
following things prior to calling for a support.
For those problems not listed in the list above, an inspection provided by a skilled engineer
is required. Please contact the distributor.
Caution:
Do not shut the electricity supplied to the heat pump system even if you go away from
home and do not use hot water for a long while.
If the system is equipped with freeze protect heaters, also do not shut the power supply to
the heaters.
Failure to do so may cause a crack on the pipes due to the pipes getting frozen.
Status Considerable Causes Action to Take
No hot water
comes out of
water tap
Temperature
of hot water is
too low
Small or no hot water is left in
the storage tank.
- Stop using hot water and wait for about 1
hour
- Consider a change of the electricity
supply off-peak mode (Length of power-
supply hours may be too short for the
water heating cycle to cover the hot water
consumption)
Air removing procedure from the
heat pump system may be
insufficient.
- Open the water drain plugs on the Heat
Pump Unit to remove air from water circuit.
(Be careful for burning)
Filter on cold inlet connector may
be blocked. - Check the filter and remove if there is any blockage
Water flow speed may be
dropped due to the heat pump
piping bend, blockage or crush.
- Check for any piping bend or crush and
remove if any
Pipes may be frozen. - If frozen area is found on the piping, melt
the ice on the pipe and provide a heat
insulation
Stop valve is closed. - Open the valve
Air absorption is not sufficient
due to a blockage on the
evaporator.
-Remove the object being blocking the air
flow through the evaporator
(e.g. fallen leaves, grass, snow, etc.)

Sanden Heat Pump – Owner’s Manual
Page 10 of 20
Error Codes
When an error has occurred, a red LED on the operation panel turns on and an error code
is displayed on the LED display. The panel does not turn to the display sleep mode while
the error code is shown.
Figure 3 Error Code example
Below is the list of the error codes. If the corrective action does not solve the error problem,
a malfunction of the PCB is highly likely.
Error
code Error contents Error code Error contents
E001 HP water outlet over
temperature 1 E015 HP ambient temperature thermistor wire break
E002 HP water outlet over
temperature 2 E016 Tank thermistor wire break
E003 HP outlet temperature thermistor
detection error E021 HP inlet temperature thermistor wire short circuit
E004 HP discharge over temperature
1 E022 HP outlet temperature thermistor wire short circuit
E005 HP discharge over temperature
2 E023 HP discharge temperature thermistor wire short circuit
E006 HP discharge temperature
Thermistor detection error E024 HP defrost temperature thermistor wire short circuit
E007 High pressure side error E025 HP ambient temperature
thermistor wire short circuit
E008 High ambient temperature
defrost drive error E026 Tank thermistor short circuit
E009 HP defrost thermistor detection
error E031 Fan motor locked
E011 HP inlet temperature thermistor
wire break E032 Fan motor revolution error
E012 HP outlet temperature thermistor
wire break E034 Water circulation pump locked
E013 HP discharge temperature
thermistor wire break
E040
～
E089 System control error
E014 HP defrost temperature
thermistor wire break