HCW PASHW030 Service manual

HCW SWIMMING POOL HEAT PUMP
NO REVERSIBLE
PASHW030 - 50 000 btu
PASHW045 - 80 000 btu
Installation & Instruction Manual

CONTENTS
1. Preface …………………………………………………………… 1
2. Specifications ……………………………..……………………… 2
2.1 Performance Data of Swimming Pool Heat Pump Unit 2.2 ………………… 2
2.2 Dimensions for Swimming Pool Heat Pump Unit …………………………..... 3
3. Installation and Connection …………………………………………...... 4
3.1 Installation of system ………………………………………………... 4
3.2 Swimming Pool Heat Pump Location ………………………………... 5
3.3 How Close your Pool ? ……………………………………………….. 5
3.4 Swimming Pool Heat Pump Plumbing ………………………………. 6
3.5 Swimming Pool Heat Pump Electrical Wiring ………………………. 7
3.6 Initial Start-up of the Unit …………………………………………… 7
4. Usage and Operation ……………………………………………………. 8
4.1 Function of the controller ……………………………………………. 8
4.2 Usage of the controller …..…………………………………………... 9
4.3 Parameter table ……………………………………………………...... 14
5. Maintenance and Inspection ………………………………………….. …15
5.1 Maintenance ………………………………………………………… 15
5.2 Malfunction table …………………………………………………… 15
6. Appendix ………………………………………………………………… 16
6.1 Appendix 1…..…………………………………………………… 17
Appendix 2 …..…………………………………………………… 17
Appendix 3 .….…………………………………………………… 18
Appendix 4 …..……………………………………………………. 19
Appendix 5 …...…………………………………………………… 20
Appendix 6 ………………………………………………………... 21

1. PREFACE
In order to provide our customers with quality, reliability and versatility, this product
has been made to strict production standards. This manual includes all the necessary
information about installation, debugging, discharging and maintenance. Please read
this manual carefully before you open or maintain the unit. The manufacture of this
product will not be held responsible if someone is injured or the unit is damaged, as a result
of improper installation, debugging, or unnecessary maintenance. It is vital that
the instruction within this manual are adhered to at all times. The unit must be installed
by qualified personnel.
The unit can only be repaired by qualified installer centre, personnel or an authorized
dealer.
Maintenance and operation must be carried out according to the recommended time
and frequency, as started in this manual.
Use genuine standard spare parts only.
Failure to comply with these recommendations will invalidate the warranty.
Swimming Pool Heat Pump Unit heats the swimming pool water and keeps the temperature
constant. For split type unit, The indoor unit can be Discretely hidden or semi-hidden to
suit a luxury house.
1. Durable
The heat exchanger is made of PVC & Copper Nickel tube which can withstand
prolonged exposure to swimming pool water.
2. Installation flexibility
The unit can be installed outdoors or indoors.
3. Quiet operation
The unit comprises an efficient rotary/scroll compressor and low-noise fan motor,
which guaranteed its quiet operation.
4. Advanced controlling
The unit includes micro-computer controlling, allowing all operation parameters to
be set. Operation status can be displayed on the LED wire controller. Remote controller
can be chosen as future option.
1

2. SPECIFICATION
2.1 Performance data of Swimming Pool Heat Pump Unit
**** REFRIGERANT: R410A
UNIT
PASHW030-P
PASHW045-P
Heating Capacity
Kw
14.7
23.4
Btu/h
50 000
80 000
Heating Power Input
kw
2.1
3.6
Running Current
A
10.2
16
Power Supply
208-230V-/60Hz
208-230V-60Hz
Compressor Quantity
1
1
Compressor
Rotary
Scroll
Fan Number
1
1
Fan Power Input
W
120
180
Fan Rotate Speed
RPM
850
850
Fan Direction
Horizontal
Horizontal
Noise
dB(A)
54
56
Water Connection
inch
1
1.5
Water Flow Volume
gal/min
30
36
Water Pressure Drop (max)
kPa
10
10
Unit Net Dimensions (L/W/H)
inch
See the drawing of the unit
Unit Ship Dimensions (L/W/H)
inch
See package label
Net Weight
See nameplate
Shipping Weight
See package label
Heating : Ambient temp. (DB/WB) : 80.6°F / 71.2°F, Inlet water temp: 80°F
Heating mode : Ambient temp. Operating envelope 45°F - 95°F
2

2. SPECIFICATION
2.2 The dimensions for Swimming Pool Heat Pump Unit
PASHW030-P Unit : inch
PASHW045-P Unit : inch
3

3. INSTALLATION AND CONNECTION
3.1 Installation illustration
Installation items:
The factory only provides the main unit and the water unit; the other items in the
illustration are necessary spare parts for the water system, that provided by users or
installer.
ATTENTION :
Please follow these steps when using for the first time:
1- Open valve and charge water
2- Make sure that the pump and water-in-pipe have been filled with water
3- Close the valve and start the unit
ATTN: It is necessary that the water-in-pipe is higher than the pool surface.
Installation must be performed in accordance with the requirements of NEC and CEC
by authorized personnel only.
4

3. INSTALLATION AND CONNECTION
3.2 Swimming Pool Heat Pumps Location
The unit will perform well in any outdoor location provided that the following three
factors are presented:
1. Fresh - 2. Electricity - 3. Pool filter piping
The unit may be installed virtually anywhere outdoor. For indoor pools please consult
the supplier. Unlike a gas heater, it has no draft or pilot light problem in a windy area.
DO NOT place the unit in an enclosed area with a limited air volume, where the units
discharge air will be re-circulated.
DO NOT place the unit to shrubs which can block air inlet. These locations deny the
unit of a continuous source of fresh air which reduces it efficiency and may prevent
adequate heat delivery.
3.3 How Close To Your Pool?
Normally, the pool heat pump is installed within 7.5 meters of the pool. The longer the
distance from the pool, the greater the heat loss from the piping. For the most part, the
piping is buried. Therefore, the heat loss is minimal for runs of to 15 meters (15 meters
to and from the pump = 30 meters total), unless the ground is wet or the water table is
high. A very rough estimate of heat loss per 30 meters is 0.6 kW-hour, (2000 BTU) for
every 5˚C difference in temperature between the pool water and the ground surrounding
the pipe, which translates to about 3% increase in run time.
5

3. INSTALLATION AND CONNECTION
3.2 Swimming Pool Heat Pumps Plumbing
The Swimming Pool Heat Pump exclusive rated flow titanium heat exchanger requires
no special plumbing arrangements except bypass (please set the flow rate according to
the nameplate). The water pressure drop in less than 10 kPa at max. Flow rate. Since
there is no residual heat or flame Temperature, The unit does not need copper heat sink
piping. PVC pipe can be run straight into the unit.
Location : Connect the unit in the pool pump discharge (return) line downstream of all
filter and pool pumps, and upstream of any chlorinators, ozonators or chemical pumps.
Standard model have slip glue fittings which accept 1.5 inch PVC pipe for connection to
the pool or spa filtration piping. When the water connector is 1 inch to 1.5 inch you can
plumb 1.5 inch PVC piping straight into the unit.
Give serious consideration to adding a quick coupler fitting at the unit inlet and outlet to
allow easy draining od unit for winterizing and to provide easier access should servicing
be required.
Condensation: Since the Heat pump cools down the air about 4-5˚C, water may condense
on the fins of the horseshoe shaped evaporator. If the relative humidity is very high, this
could be as much as several liters an hour. The water will run down the fins into the
basepan and drain out through the barbed plastic condensation drain fitting on the side
of the basepan. This fitting is designed to accept ½ inch clear vinyl tubing which can be
pushed on by hand and run to suitable drain. It is easy to mistake the condensation for a
water leak inside the heat pump.
NB: A quick way to verify that the water is condensation is to shut off the unit and keep
the pool pump running. If the water stops running out the basepan. It is condensation.
AN EVEN QUICKER WAY is to TEST THE DRAIN WATER FOR CHLORINE –if there no
chlorine present, then it’s condensation
6

3. INSTALLATION AND CONNECTION
3.5 Swimming Pool Heat Pumps Electrical Wiring
NOTE: Although the unit heat exchanger is electrically isolated from the rest of the unit,
it simply prevents the flow of electricity to or from the pool water. Grounding the unit is
still required to protect you against short circuits inside the unit. Bonding is also required.
The unit has a separate molded-in junction box with a standard electrical conduit nipple
already in place. Just remove the screws and the front panel, feed your supply lines in
through the conduit nipple and wire-nut the electric supply wires to the three connections
already in the junction box (four connections if three phase). To complete electrical
hookup, connect Heat Pump by electrical conduit, UF cable or other suitable means as
specified (as permitted by local electrical authorities) to a dedicated AC power supply
branch circuit equipped with the proper circuit breaker, disconnect or time delay fuse
protection.
Disconnect –A disconnect means (circuit breaker, fuse or un-fused switch) should be
located within sight of and readily accessible from the unit. This is common practice on
commercial and residential air conditioners and heat pumps. It prevents remotely-energi-
zing unattended equipment and permits turning off power at the unit while the unit is
being serviced.
3.6 Initial Startup of the Unit
NOTE: In order for the unit to heat the pool or spa, the filter pump must be running to
circulate water through the heat exchanger.
Startup Procedure –After installation is completed, you should follow these steps:
1. Turn on your filter pump. Check for water leaks and verify flow to and from the pool.
2. Turn on electrical power supply to the unit, then press the key ON/OFF of wire controller. It
should start in several seconds.
3. After running a few minutes make sure the air leaving the top (side) of the unit is cooler
(Between 5-10˚C)
4. With the unit operating turn the filter pump off. The unit should also turn of automatically.
5. Allow the unit and pool pump to run 24 hours per day until desired pool water temperature
is reached. When the water-in temperature reach setting. The unit just shuts off. The unit
will now automatically restart (as long as your pool pump is running) when the pool
temperature drops more than 2˚C bellow set temperature
Time Delay –The unit is equipped with a 3 minutes built-in solid state restart delay included
to protect control circuit components and to eliminate restart cycling and contactor chatter.
This time delay will automatically restart the unit approximately 3 minutes after each control
circuit interruption. Even a brief power interruption will activate the solid state 3 minute
restart delay and prevent the unit from starting until the 5 minute countdown is completed.
Power interruptions during the delay period will have no effect on the 3 minute countdown.
7

4. USAGE AND OPERATION
4.1 Function of wire controller
Key
Key Name
Key function
ON/OFF
Pressure this key to turn on/off the unit
MODE
Mode
Press this key to change the working mode
CLOCK
Timer
Press this key to set system time
˚C/˚F
Choose key
Press this key to choose the Celsius degree or Fahrenheit degree
TIMER ON
TIMER ON
Press this key to set timer-on
TIMER OFF
TIMER OFF
Press this key to set timer
Up
Press this key to select the upward option or increase the
parameter value.
Down
Press this key to select the downward option or decrease the
parameter value.

8
4. USAGE AND OPERATION
4.2 Usage of wire controller
4.2.1 Turn ON/OFF the unit
When the unit is off, press the key " " 0.5s to turned on the unit
When the unit is on, press the key " " 0.5s to show down the unit
4.2.2 Mode switch
You can choose unit mode (The function is only available for heating & cooling unit).
In the unit on or off state, you can choose cooling, heating or automatic mode by
pressing ‘’MODE’’ button.
Attention : if the unit is for heating only or coling only, the mode switching operation is invalid
4.2.3 Temperature selection
Choose display type of unit temperature, when the unit is on, press mode button ˚C/˚F
And choose Celsius degree or Fahrenheit degree freely.

9
4. USAGE AND OPERATION
4.2.4 Setting temperature
In main interface, press ‘’ ‘’ or ‘’ ‘’ and the current mode target-temprature
flashes, then press ‘’ ‘’ to increase the temp. Value, or press ‘’ ‘’ to decrease it.
Press ‘’MODE’’ can save setting parameter and back to the main interface.
Press " " can not save setting parameter but back to the main interface.
ATTENTION : If there is no opearation fir 5s, system would remember parameter setting and
back to the main interface.

10
4. USAGE AND OPERATION
4.2.5 Clock setting
In the main interface, press ‘’CLOCK’’ twice. Hours start to flashing, and press ‘’ ‘’
to increase value or press ‘’ ‘’ to decrease value, and press ‘’CLOCK’’ to setting.
At the same time, minute start to flashing, press ‘’ ‘’ to increase value or press ‘’ ‘’
to decrease value, and press ‘’CLOCK’’ to save setting.
Press " " can not save setting parameter and back to main interface.
ATTENTION : If there is no operation for 5s system will remember parameter setting and
back to the main interface.
Hours Minute

11
4. USAGE AND OPERATION
4.2.6 Timer setting
(1) You can set the timer of the unit on
In the on or off state, press ‘’TIMER ON’’ to enter timer-on interface.
Press ‘’TIMER ON’’ And time-hour-bit flashing. Press ‘’ ‘’ or ‘’ ‘’ to change the
hours value. Press ‘’TIMER ON’’ to save hours. At the same time, minutes-bit flashing.
Press ‘’ ‘’ or ‘’ ‘’ to change the minute value. Press ‘’TIMER ON’’ to save and exit.
At this time, ‘’TIMER ON’’ LED light is on. (The time-off setting is to pressn’’TIMER

OFF’’, the other operation is the same as timer-on).
For example :
12
4. USAGE AND OPERATION
(2) The setting of cancelling the timer
If there is no need to set timer on or timer off, the timer setting can be cancelled. At unit
on or off state, press ‘’TIMER ON’’ to enter timer-on setting interface, then press
" " to cancel the timer-on, at this timer, the timer-on light turn off.
(Press ‘’TIMER OFF’’ to enter timer-off setting interface, then press " " to cancel
the timer-off, at this timer, the timer-off light turn off.
Hour Minute

4.2.6 Keyboard Lock
To avoid mis-operation, please lock the controller after parameter setting. At the main
interface, pressing " " for 5 seconds, when hearing one sound, the keyboard is locked.
When the keyboard is locked, pressin " " for 5 seconds, when hearing one sound, the
keyboard lock is open.
NOTE: When the unit is alarming state, the key lock can be removed automaticly.
13
4. USAGE AND OPERATION
4.2.8 Malfunction display
There will be malfunction code showing on the controller screen when relative
malfunction occurs. You can refer to the malfunction table to find out the failure cause
and solution.
For example:

4.3 Parameter table
Digit
meaning
Range
Default
Adjust (yes/no)
R01
Return water temp.
Setting (cooling model)
81˚F
Adjustable
R02
Return water temp.
Setting (heatin model)
81˚F
Adjustable
R03
Return water temp.
Setting (auto mode)
81˚F
Adjustable
T02
Inlet water temp.
True testing figure
T03
Outlet water temp.
True testing figure
T04
Pipe temp.
True testing figure
T05
Ambient temp.
True testing figure
T01
Evaporator temp.
True testing figure
14
5. MAINTENANCE AND INSPECTION
5.1 Maintenance
Check the water supply device and the release often. You should avoid the condition of
no water or air entering into system, as this will influence unit’s.
The area around the unit should be dry, clean and well ventilated. Clean the side heating
Exchanger regularity to maintain good heat exchange as conserve energy.

The operation pressure of the refrigerant system should only be serviced by a certified
technician.
Check the power supply and cable connection often. Should the unit begin to operate
abnormally switch it off and contact the qualified technician.
Discharge all water in the water pump and water system, so that freezing of the water
in the pump or water system does not occur. You should discharge the water at the bottom of
water pump if the unit will not be used for an extended period of time. You should check the
unit thoroughly and fill the system with water fully before using it for the first time after a
prolonged of no usage.
5.2 Trouble Shooting Guide
Malfunction
LED
Controller
Reason
Resolution
Water inlet temp.
Sensor failure
P01
The sensor is open or short circuit
Check or change the sensor
Water outlet temp. Sensor failure
P02
The sensor is open or short circuit
Check or change the sensor
Coil sensor failure
P05
The sensor is open or short circuit
Check or change the sensor
Ambient sensor falure
P04
The sensor is open or short circuit
Check or change the sensor
Temp. differencial between water-in
and water-out is too large
E06
Water flow volume not enough,
water pressure difference is too low
Check the water flow volume or
system obstruction
Anti freezing under cooling mode
E07
Outlet water is too low
Check the water flow volume or outlet
water temp. sensor
The first class freezing protection in
winter
E19
Ambient or inlet water temp. is too
low
The second class freezing protection
in winter
E29
Ambient or inlet water temp. is too
lower
High pressure protect
E01
Gas System pressure is too high
Check through the high pressure
switch and the gas system pressure to
judge wheter the gas loop is blocked
or the freon is suitable
Low pressure protect
E02
Gas System pressure is too low
Check through the low pressure
switch and the gas system pressure to
judge whether there is leaking or the
freon is not enough
Flow switch failure
E03
No water/little water in water
system
3times water-in and water-out temp.
difference protection in 30 minutes
E06
Water flow rate not enough
Check the water flow rate, or water
system is jammed or not
Defrosting
Defrost Code
Display
Communication failure
E08
LED controller and the PCB
connection failure
Check the wire connection
15
6. APPENDIX
Appendix 1: Connection of PCB illustration

Connections explanation :
No.
Symbol
Meaning
1
OUT1
Compressor of system 1 (220-230VAC)
2
OUT2
Water pump (220-230VAC)
3
OUT3
4way valve (220-230VAC)
4
OUT4
High speed of fan motor (220-230VAC)
5
OUT5
Low speed of fan motor (220-230VAC)
6
AC-N
Neutral wire
7
NET GND 12V
Wire controller
8
DI01 GND
On/Off Switch (input) (no use)
9
DI02 GND
Flow switch (input) (normal close)
10
DI03 GND
Low pressure protect
11
DI04 GND
High pressure protect
12
DI05 GND
No use
13
DI06 GND
No use
14
AI01 GND
Suction temp. (Input)
15
AI02 GND
Water in temp. (input)
16
AI03 GND
Water out temp. (inlet)
17
AI04 GND
Temp. Of Coil (input)
18
AI05 GND
Ambient temp. (input)
19
AI06 GND
No use
16
6. APPENDIX
Appendix 2: Cable specification

1. Single phase unit
MCA
Phase line
(AWG)
Earth line
(AWG)
No more than 13A
16
16
13-18A
14
14
18-25A
12
12
25-30A
10
10
30-40A
8
8
40-55A
6
6
55-70A
4
4
2. Recommend circuit breaker to use
UNIT
BREAKER
PASHW030-P-JI
20A
PASHW045-P-JI
40A
When the unit be installed at outdoor, please use the cable which can against UV.
17
6. APPENDIX