LEDEX 20211213-0012 Air Source Hot Water Heat Pump Instruction Manual

LEDEX 20211213-0012 Air Source Hot Water Heat Pump

Preface

• 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.
• When installing the unit and connecting the pipe, please carry it out strictly according to the manual.
• Once finish the installation and connection, please make everything ok before powering on the unit.
• The installer should explain to the user how to operate and maintain the unit according to the manual when the unit is installed. And ask the user to read the manual carefully, keep the manual and do the operation in strict accordance with the Manual.
• The manufacturer 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 which is not in line with this manual.
• It is vital that the below instructions are adhered to at all times to keep the warranty.
  • Maintenance and operation must be carried out according to the recommended time and frequency, as stated in this manual.
  • Failure to comply with these recommendations will invalidate the warranty.
• The manual will be changed if there is any improvement on the unit, there will not be advance notice.

Appendix

Appendix3.Wiring diagram

• The type of fuse is 20A/250VAC.

Appendix2.Caution & Warning

1. The unit can only be repaired by qualified installer center personnel or an authorized dealer. for Europe market
2. This appliance is not intended for use 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 concerning the use of the appliance by a person responsible for their safety. For Europe market Children should be supervised to ensure that they do not play with the appliance.
3. Please make sure that the unit and power connection has good earthing, otherwise may cause electrical shock.
4. If the supply cord is damaged, it must be replaced by the manufacturer or our service agent or a similarly qualified person in order to avoid a hazard.
5. Directive 2002/96/EC (WEEE): The symbol depicting a crossed-out waste bin that is underneath the appliance indicates that this product, at the end of its useful life, must be handled separately from domestic waste, must be taken to a recycling center for electric and electronic devices or handed back to the dealer when purchasing an equivalent appliance.
6. Directive 2002/95/EC (RoHs): This product is compliant with directive 2002/95/EC (RoHs) concerning restrictions for the use of harmful substances in electric and electronic devices.
7. The unit CANNOT be installed near the flammable gas. Once there is any leakage of the gas, fire can occur.
8. Make sure that there is a circuit breaker for the unit, lack of a circuit breaker can lead to electrical shock or fire.
9. The heat pump located inside the unit is equipped with an overload protection system. It does not allow for the unit to start for at least 3 minutes from a previous stoppage.
10. The unit can only be repaired by the qualified personnel of an installer center or an authorized dealer. for the North American market.
11. Installation must be performed in accordance with the NEC/CEC by an authorized person only. for the North American market
12. USE SUPPLY WIRES SUITABLE FOR 75.
13. Caution: Single wall heat exchanger, not suitable for potable water connection.
14. The water may drip from the discharge pipe of the pressure-relief device and this pipe must be left open to the atmosphere.

Safety precaution

To prevent the users and others from harm of this unit, and avoid damage on the unit or other property, please use the heat pump properly, please read this manual carefully and understand the following information correctly.

1. The hurt means no need to be in hospital and cure for a long time, it’s injury, burn and get an electric shock.
2. The material lost means property and datum lost.

Installation warning

Appendix1. Use for overheating protector

Overheating protector is used to prevent safety accident caused by the water temperature inside the tank too high in case the heat pump controller is out of control. When the temperature inside the tank reaches the auction value of the protector, the power supply will be cut off. It has to be reset manually so that the unit returns to normal. The operation in detail is as follows:

Warning

• Be careful of electric shock when you press the red button.

Maintenance and repair

• Check the water supply and air vent frequently, to avoid lack of water or air in the water loop. Clean the water filter in a certain period to keep good water quality. Lack of water and dirty water can damage the unit. The heat pump will start the water pump per 72 hours when it is not running, to avoid freezing.
• Keep the unit in a place that is dry and clean, and has good ventilation. Clean the heat exchanger in 1 or 2 months and keep a good heat exchange rate and save energy.
• Check each part of the unit and the pressure of the system. Replace the failure part if there is any, and recharge the refrigerant if it is needed.
• Check the power supply and the electrical system, and make sure the electrical components are good, the wiring is well. If there is any part that failed with the wrong action or smell, please replace in time.
• If the heat pump is not used for a long time, please drain out all the water in the unit and seal the unit to keep it good. Please drain the water from the lowest point of the heat exchanger to avoid freezing in winter. Water recharge and full inspection on the heat pump is needed before it is restarted.
• Don’t power off the unit when you use it in continuity, or the water in the pipe will freeze and split the pipe. We will not answer for this damage.

Operation warning

Move and repair

Operation attention

Usage warning

Specs

Appearance

Characteristic

• good looking and efficient attractive design allow the unit to be placed in the open in finished utility spaces and basements, reducing the cost of remodelling; depending on external condition the cost of operation can be 25% of that of an electric water heater, and can be used in locations unsuitable for solar hot water heating.
• environmentally friendly and safer produces no harmful gas locally from the combustion of oil, coal, or natural gas; free of potential hazards from carbon monoxide, it also can avoids electrical contact with water, and does not provide an open flame, making the device more suitable for installation.
• easy to operate and multiple heat sources depending upon the location of the air exchanger, heat may be taken from the outside environment, from a sun porch or attic space, or from hot areas in light industrial environments.

Operation and usage

The main board of the input and output interface instructions below.

Controller interface diagram and definition

Principle

System Principle

1. Refrigerant is compressed into vapor with high temperature and high pressure when it goes through the compressor.
2. On the discharge side of the compressor, the now hot and highly pressurized vapor is cooled down through the heat exchange with the water in the tank until it condenses into a high-pressure, moderate-temperature liquid.
3. Then the pressure of the liquid refrigerant drops as it passes the throttling device.
4. Finally, the refrigerant absorbs heat from the surrounding air and evaporates into vapor with low temperature and low pressure and then it goes into the compressor again.
5. The cooled surrounding air could be blown to the rooms which need fresh cooled air.

Dimensions

unit：mm

Model

dimension

| PASHW008-300LD-KB
---|---
A| 1906
B| 1210
C| 1110
D| 1010
E| 592

Operation and usage

Inverter drive board high temp. alarm| F22|

The transducer temperature is too high

| Check and adjust the current measurement
---|---|---|---
Compressor overcurrent alarm| F23| Compressor electricity is large| The compressor over-current protection
Input overcurrent alarm| F24| The input current is too large| Check and adjust the current measurement
EEPROM error alarm|

F25

| MCU error| Check whether the chip is damaged Replace the chip
V15V undervoltage and overvoltage protection| F28| The V15V is overload or undervoltage| Check if the V15V input voltage is in the range of 13.5v~16.5v or not

Interface drawing

Wire control interface diagram and definition

DC fan motor2 feedback failure

|

F032

| 1. Motor is in a locked-rotor state 2. The wire connection between the DC- fan motor module and the fan motor is in bad contact|

1. Change a new fan motor

2. Check the wire connection and make sure they are in good contact

---|---|---|---
DC fan motor drive module communication failure| E081| The speed control module and main board communication fail| Check the communication connection
Low ambient temp. Protection| TP| The ambient temp. Is low| View the ambient temperature value
Inverter drive board

communication failure

| E088| The inverter drive board and main board communication fail| Check the communication connection
The Wire Controller does not match Main Controller| E084| The Wire Controller does not match Main Controller| Check whether the main control program is correct

Frequency conversion board fault table

Protection/fault| Fault

display

| Reason| Elimination methods
---|---|---|---

Inverter drive board MOP alarm

| F01| MOP drive alarm| Recovery after the 150s

Inverter drive board offline

| F02| Frequency conversion board and main board communication failure| Check the communication connection

IPM protection

| F03| IPM modular protection| Recovery after the 150s
Compressor startup failure| F04| Lack of phase, step, or drive hardware damage| Check the measuring voltage check

frequency conversion board hardware

DC fan motor drive module protection| F05| Motor current feedback open circuit or short circuit| Check whether the current return wires connected motor
IPM Overcurrent| F06| IPM Input current is large| Check and adjust the current measurement
High DC voltage protection| F07| DC bus voltage>Dc bus over-voltage protection value| Check the input voltage measurement
Low DC voltage protection| F08| DC bus voltage<Dc bus over-voltage protection value| Check the input voltage measurement
Low input voltage protection| F09| The input voltage is low, causing the input current to be high| Check the input voltage measurement
High input voltage protection|

F10

| The input voltage is too high, more than the outage protection current RMS| Check the input voltage measurement
Voltage sampling fault|

F11

|

The input voltage sampling fault

| Check and adjust the current measurement
connection failure of DSP and PFC|

F12

| DSP and PFC connect fault| Check the communication connection
Input overcurrent|

F26

| The equipment load is too large| Check the input current of the unit

whether is bigger than the rate current

PFC failure|

F27

| The PFC circuit protection| Check the PFC switch tube short circuit or not
IPM high temp. Protection|

F15

| The IPM module is overheated| Check and adjust the current measurement

Weak magnetic protection

|

F16

|

Compressor magnetic force is not enough

|

Check the input voltage of the inverter board(single phase unit:230V, three

phase unit:400V)

Inverter drive board power input phase loss| F17| The input voltage lost phase| Check and measure the voltage adjustment
IPM sampling current failure| F18| IPM sampling electricity is a fault| Check and adjust the current measurement
Radiator temperature failure (130℃)| F19| The sensor is a short circuit or open circuit| Inspect and replace the sensor
Inverter drive board high temp. protection|

F20

| The transducer is overheated| Check and adjust the current measurement

Performance parameter

• Measurement conditions:
• Instant heating: Ambient temperature 20℃/15℃,Water inlet 15℃ ,Water outlet 55℃

Work range

1. The ambient temperature is -5~43℃
2. The max temperature of the water tank is 75℃

Operating parameters

• The range of the operating water temperatures: is 9~75℃
• The range of the operating water pressures: 0.15~0.7MPa

Function Presentation

Heating capacity

• The unit absorbs energy from outside and releases the heat according to the heat exchanger, if the environment temperature is low, the heating capacity will be attenuation.

minutes protection

• When the unit stops, if you restart the unit or turn on the manual switch, the unit will not run in 3 minutes, it’s the protection for the compressor.

Defrosting

• Under the heating mode, the unit will defrost automatically to make sure heating efficiency (it will last 2-10 minutes).

Working condition

• In order to use the unit correctly, please run the unit at environment temperature -5 ~43. The unit includes sophisticated electronic devices, and prohibited to use of water from lakes, untreated river water, and groundwater!

Power off

• If the power supply is off, the unit will stop running. If the running unit is disturbed by lightning, car radio, or power grid fluctuations please cut off the manual power switch, and then power on, press the on / off button.

Water pressure protection

• In the water system will be installed the Pressure release valve. When the tank pressure reaches 0.7MPa, the sluice of the Pressure Relief Valve will be open.

Keep power on

• Always ensure that the unit is powered on, you can turn off the unit, but can not power off. If you want to power off the unit, must drain out the water in the tank.

Fault table

Electronic control fault table

Can be judged according to the remote controller failure code and troubleshooting.

Protect/fault| Fault

display

| Reason| Elimination methods
---|---|---|---
Standby|

Non

| |
Normal boot|

Non

| |
Water tank bottom thermistor failure|

P01

| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
Water tank top

thermistor failure

| P02| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
Ambient thermistor failure| P04| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor

Coil thermistor failure

|

P05

| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
Suction thermistor failure| P07| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
Solar thermistor failure| P034| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
Exhaust thermistor failure| P81| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
High-pressure protection| E01| The high-pressure switch is broken| Check the pressure switch and cold circuit
Low-pressure protection| E02| Low pressure1 protection| Check the pressure switch and cold circuit
Water flow switch protection 3 times or more| E03| No water/little water in the water system| Check the pipe water flow and water pump
Antifreeze protection 3 times or more| E07| water temp.or ambient temp. is too low| View the water temperature or ambient temperature value
Antifreeze protection in winter (water tank )| E09| The ambient temp. Is low| View the ambient temperature value
Excessive temp. difference between inlet and outlet

water protection 3 times or more

|

E06

|

Water flow is not enough

and low differential pressure

|

Check the pipe water flow and whether the water system is jammed or not

Compressor overcurrent protection 3 times or more| E51| The compressor is overload| Check whether the system of the compressor running normally
High discharge temp.

Protection 3 times or more

| P82| The compressor is overload| Check whether the system of the compressor running normally
Communication  failures| E08| Communication failure between wire controller and mainboard| Check the wire connection between

remote wire controller and main board

Antifreeze thermistor failure| P09| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
Coil thermistor2 failure| P15| The temp. The sensor is broken or short circuit| Check or change the temp. Sensor
EC fan motor feedback failure| F51| There is something wrong with the fan motor and the fan motor stops running| Check whether the fan motor is broken or locked or not
Pressure sensor failure| PP| The pressure sensor is broken| Check or change the pressure Sensor or pressure

DC fan motor1 feedback failure

|

F031

| 1. Motor is in a locked-rotor state 2. The wire connection between the DC- fan motor module and the fan motor is in bad contact| 1. Change a new fan motor

2. Check the wire connection and make sure they are in good contact

Manual function

In the manual control interface, click “Manual function “to enter the manual function interface as follows:

• Click “ to manually turn on defrost or turn off manual defrost
• Click “ to manually turn on or off the electric heating.

Installation sketch map

The minimum permissible distances to adjacent structures: In order to the airflow will not to be affected, please make sure the distance between the top of units and ceiling-specific parameters.

ATTENTION: The Pressure release Valve attached to the unit must be installed, or it will cause damage to the unit and even hurt people. Do not use stainless steel fittings to connect directly with other metals to prevent galvanic corrosion.

Choose the suitable unit

• In order to save energy, please choose a suitable unit.

Notice: The choice is just for reference, please choose the unit according to native environment and custom.

Deposited and transportation

• As a rule, the unit is to be stored and/or transported in its shipping container in an upright position and without a water charge. For transport over short distances, and provided due care is exercised, an inclination angle of up to 30 degrees is permitted. Both during transport and storage, ambient temperatures of -5℃ to 43℃ are permissible.

Transport using a forklift

• When transported by a forklift, the unit must remain mounted on the pallet. The lifting rate should be kept to a minimum. Due to its top-heaviness, the unit must be secured against tipping over. To prevent any damage, the unit must be placed on a level surface.

Manual transport

For manual transport, the wooden pallet can be used for the bottom part. Using ropes or carrying straps, a second or third handling configuration is possible. With this type of handling, care must be taken that the max. The permissible inclination angle of 60 degrees is not exceeded. If transport in an inclined position cannot be avoided, the unit should be taken into operation one hour after it has been moved into the final position.

CAUTION: High center of gravity, low overturning moment!

Manual control

In the functional interface, click (4) to enter the manual control interface as follows:

Brilliance control

• In the manual control interface, click Brilliance control “to enter the Brilliance control interface as follows:

• Slide the progress bar to adjust the screen brightness.

• When the fault is resolved, the fault code, fault name, and time of occurrence recorded on the fault interface will still be saved; (2)After clicking the “ button to clear the fault record, the resolved fault will not appear in the fault record.

Curve display

In the functional interface, click (5) to enter the curve display interface as follows:

1. This curve function records of the top temperature and the ambient temperature;
2. Collect and save temperature data every 5 minutes;
3. Only record the curve when the power is on, there will be no record when the power is off;
4. The value of the abscissa indicates the time corresponding to the point on the curve, and the rightmost point on the first page is the most recent temperature record;
5. The temperature curve record has a power-down memory function;
6. The curve record can record data for up to 60 days. After 60 days, the latest data will automatically overwrite the previous data.

Installation position

1. Waste heat is useful to heat（see picture below） The standard heat exchanger of the hot-water heat pump enables direct connection to a second heat generator, e.g. a solar heating system or a boiler.
2. Dehumidification in the recirculating air mode（see picture below） Dehumidified air in the laundry room supports laundry drying and prevents moisture-induced damage.
3. Cooling in the recirculating air mode（see picture below） The room air is extracted from the storage room or a wine cellar, subsequently cooled and dehumidified in the heat pump, and finally re-introduced into the room. Recreation rooms, boiler rooms or utility rooms are ideal installation sites. The air ducts leading through warm sections must be insulated to prevent the formation of condensation.
4. variable changeover of intake air（see picture below） A duct system with integrated bypass flaps allows for variable utilization of the heat contained in the outside air or room air for the production of hot water.

Installation attentions

1. Choose the right path to move the unit;
2. Try to move the unit as original case;
3. If the unit is installed in the building of the metal part, it must work for electrical insulation and comply with the relevant technical standards of electrical equipment.

System setting

In the functional interface, click (6) to enter the system setting interface as follows:

Unit status

• In the system setting interface click Unit status “to enter the Unit state interface as follows.

Fault history

• In the system setting interface click “Fault history “to enter the Fault history interface as follows:

System time setting

In the functional interface, click (3) to enter the system time setting interface as follows:

Real-time fault

In the function interface, click (1) to enter the real-time fault interface and display as follows:

1. The current fault code, fault name, and time of occurrence are displayed on the real-time fault interface;
2. The resolved fault will not appear in the real-time fault interface.

Water loop connection

• Pay attention to these points when connecting the water loop pipe:
• Make sure there is nothing in the pipe and the water loop is smooth, check the pipe carefully to see if there is any leak, then pack the pipe with the insulation.
• Install the one-way valve and safety valve in the water circulation system.
• The one-way valve is to be operated regularly to remove lime deposits and to verify that it is not blocked.
• The nominal pipe widths of the field-installed sanitary installations must be selected on the basis of the available water pressure and the expected pressure drop within the piping system. The water-side installation has to be executed in compliance with DIN 1988(in case of excessive water pipe pressure, a pressure relief valve is to be provided!)
• The water pipes may be of the rigid of flexible type. To prevent corrosion damage.
• When installing the pipework on the customer’s site, any contamination of the piping system must be avoided(pipes may have to be flushed prior to the connection of the unit).
• The water may drip from the discharge pipe of the pressure-relief device and this pipe must be left open to the atmosphere.

Wire connection

• There is a wire at the top of the unit, it’s for the power supply of the unit. The spec of the wire is 1.5mm.
• There must be a switch when connecting the unit to the power system.
• If the supply cord is damaged, it must be replaced by the manufacturer or our service agent or a similarly qualified person in order to avoid a hazard.

Trail running

Inspection before trial running

• Check the water in the tank and the water pipe connection.
• Check the power system: make sure the power supply is normal and the wire connection is
• Check the unit: make sure everything is ok before powering on the unit, and check the light on the wired controller when the unit runs.

Trail running

• Use the wired controller to start the unit;
• Listen to the unit carefully when power on the unit, power off the unit at once when you hear deviant noise;
• Measure the water temp. To check the undulation of the water temp.;
• The parameter has been set, the user can’t change the parameter optionally, ask for a professional person to change the parameter.

Color screen wire controller interface introduction

Main interface

Icons and buttons description

the lock interface and enter “22” to unlock the screen

②| MODE| Click to enter the mode setting
③| Water Temp.| Display water temperature
④| ON/OFF| Press to start /shut off the unit
⑤| Target Temp.| Click to enter the target temp. setting interface
⑥| Fault Icon| Indicates that the unit has a fault at this time
⑦| Timing

ON/OFF icon

| Display that the timing ON/OFF function is enabled
⑧| Defrost icon| Indicates that the unit is running defrost

Timing ON &OFF setting

In the functional interface, click (2) to enter the timing ON&OFF setting interface as follows:

Timing on setting

| |

Click to set the start time of the timing

2

| Timer1

Timing start button

| Open: ON End: OFF| Click this button to start or end the timing start setting function
3| Timer2

Timing on setting

| |

Click to set the start time of the timing

4| Timer2

Timing start button

| Open: ON End: OFF| Click this button to start or end the timing start setting function
5| Timer1

Timing offsetting

| |

Click to set the end time of the timing

6

| Timer1

Timing end button

| Open: ON End: OFF| Click this button to start or end timing end setting function
7| Timer2

Timing offsetting

| |

Click to set the end time of the timing

8| Timer2

Timing end button

| Open: ON End: OFF| Click this button to start or end timing end setting function

Color screen wire controller function introduction

Functional interface

In the main interface, slide the interface to enter the function interface displays as follows:

buttons description

interface
③| System time| Click this button to enter the system time setting interface
④| Manual control| Click this button to enter the manual control interface
⑤| Curve display| Click this button to view the temperature curve
⑥| System settings| Click this button to view the United state and the parameter

Boot and shutdown

• In shutdown status, click the on/off button then the unit will be booted;
• In booting status, click the on/off button then the unit will be shut down.

Mode setting

• In the main interface, click ② interface displays as follows:

• Click “ ” “ ” Select the corresponding mode， and click OK to save and exit or click Cancel to exit without saving.

Vacation mode setting

• Select vacation mode when the mode setting， displays as follows:

• Click “Cancel” to return to the main interface.

• Click “OK” displays as follows:

• Click, select the vacation mode time on the time input interface，
• Click ” ” to save and exit click “ ” to return to the main interface.

Target temp. setting

• In the main interface, click (5) interface displays as follows:

• Click “ ” or“ ” select the target temp.，click OK to save and exit or click Cancel to exit without saving.

Lock screen

• In the main interface, click (1) to enter the lock screen interface as follows:

• Click“ ”on the lock interface and enter “22” to unlock the screen.

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