Pioneer QUANTUM INVERTER Series Programmierhandbuch

QUANTUM INVERTER SERIES

(WYS-20, WYS-22, Single-Zone)

DUCTLESS WALL-MOUNT MINI SPLIT INVERTER+ AND INVERTER++ AIR CONDITIONER / HEAT PUMP SYSTEM

SERVICE & TROUBLESHOOTING MANUAL

(FOR USE BY QUALIFIED PERSONNEL ONLY)

INVERTER

Model Numbers Encompassed:

20 SEER Series (WYS-20, Quantum Inverter+):

22 SEER Series (WYS-22, Quantum Inverter++):

WYS009AMFI20RL (comprised of YN009AMFI20RPD + WS009AMFI20HLD)

WYS009GMFI20RL (comprised of YN009GMFI20RPD + WS009GMFI20HLD)

WYS012AMFI20RL (comprised of YN012AMFI20RPD + WS012AMFI20HLD)

WYS012GMFI20RL (comprised of YN012GMFI20RPD + WS012GMFI20HLD)

WYS018GMFI20RL (comprised of YN018GMFI20RPD + WS018GMFI20HLD)

WYS024GMFI20RL (comprised of YN024GMFI20RPD + WS024GMFI20HLD)

WYS030GMFI20RL (comprised of YN030GMFI20RPD + WS030GMFI20HLD)

WYS036GMFI20RL (comprised of YN036GMFI20RPD + WS030GMFI26HLD)

WYS009AMFI22RL (comprised of YN009AMFI22RPE + WS009AMFI22HLE)

WYS009GMFI22RL (comprised of YN009GMFI22RPE + WS009GMFI22HLE)

WYS012AMFI22RL (comprised of YN012AMFI22RPE + WS012AMFI22HLE)

WYS012GMFI22RL (comprised of YN012GMFI22RPE + WS012GMFI22HLE)

WYS018GMFI22RL (comprised of YN018GMFI22RPE + WS018GMFI22HLE)

WYS024GMFI22RL (comprised of YN024GMFI22RPE + WS024GMFI22HLE)

Table of Contents

§. Safety Precautions

1. Precautions

2. Information Disclosures (For flammable materials)

§. Specifications

1. Model Reference

2. Pipe Length and Drop Height

3. Refrigerant Cycle Diagrams

4. Electrical Wiring Diagrams

§. Product Features

1. Display Function

2. Safety Features

3. Basic Features

4. Optional Features

§. Maintenance

1. First Time Installation Check

2. Refrigerant Recharging

3. Re-Installation

§. Indoor Unit Disassembly

1. Dimensions

2. Indoor Unit Disassembly

§. Outdoor Unit Disassembly

1. Outdoor Unit Data Table

2. Dimensions

3. Outdoor Unit Disassembly

Table of Contents

§. Troubleshooting

1. Safety Caution

2. General Troubleshooting

3. Complain Record Form

4. Error Diagnosis and Troubleshooting Without Error Code

5. Quick Maintenance by Error Code

6. Troubleshooting by Error Code

7. Check Procedures

Appendix

i) Temperature Sensor Resistance Value Table for T1,T2,T3 and T4 (°C – K)

ii) Temperature Sensor Resistance Value Table for TP(for some units) (°C – K)

iii) Pressure On Service Port

Contents

Safety Precautions

1. Precautions......................................................................................................................................2

2. Information Disclosures (For flammable materials).........................................................3

1. Precautions

To prevent personal injury, or property or unit damage,

adhere to all precautionary measures and instructions

outlined in this manual. Before servicing a unit, refer to this

service manual and its relevant sections.

Failure to adhere to all precautionary measures listed in this

section may result in personal injury, damage to the unit or

to property, or in extreme cases, death.

WARNING indicates a potentially hazardous

situation which if not avoided could result in serious

personal injury, or death.

CAUTION indicates a potentially hazardous situation

which if not avoided could result in minor or

moderate personal injury, or unit damage.

1.1 In case of Accidents or Emergency

WARNING

••If a gas leak is suspected, immediately turn off the

gas and ventilate the area if a gas leak is suspected

before turning the unit on.

••If strange sounds or smoke is detected from the unit,

turn the breaker off and disconnect the power supply

cable.

••If the unit comes into contact with liquid, contact an

authorized service center.

••If liquid from the batteries makes contact with skin or

clothing, immediately rinse or wash the area well with

clean water.

••Do not insert hands or other objects into the air inlet

or outlet while the unit is plugged in.

••Do not operate the unit with wet hands.

••Do not use a remote controller that has previously

been exposed to battery damage or battery leakage.

CAUTION

••Clean and ventilate the unit at regular intervals when

operating it near a stove or near similar devices.

••Do not use the unit during severe weather conditions.

If possible, remove the product from the window

before such occurrences.

1.2 Pre-Installation and Installation

WARNING

••Use this unit only on a dedicated circuit.

••Damage to the installation area could cause the unit

to fall, potentially resulting in personal injury,

property damage, or product failure.

••Only qualified personnel should disassemble, install,

remove, or repair the unit.

••Only a qualified electrician should perform

electrical work. For more information, contact your

dealer, seller, or an authorized service center.

CAUTION

••While unpacking be careful of sharp edges around

the unit as well as the edges of the fins on the

condenser and evaporator.

1.3 Operation and Maintenance

WARNING

••Do not use defective or under-rated circuit breakers.

••Ensure the unit is properly grounded and that a

dedicated circuit and breaker are installed.

••Do not modify or extend the power cable. Ensure

the power cable is secure and not damaged during

operation.

••Do not unplug the power supply plug during

operation.

••Do not store or use flammable materials near the

unit.

••Do not open the inlet grill of the unit during

operation.

••Do not touch the electrostatic filter if the unit is

equipped with one.

••Do not block the inlet or outlet of air flow to the unit.

••Do not use harsh detergents, solvents, or similar items

to clean the unit. Use a soft cloth for cleaning.

••Do not touch the metal parts of the unit when

removing the air filter as they are very sharp.

••Do not step on or place anything on the unit or

outdoor units.

••Do not drink water drained from the unit

••Avoid direct skin contact with water drained from the

unit.

••Use a firm stool or step ladder according to

manufacturer procedures when cleaning or

maintaining the unit.

CAUTION

••Do not install or operate the unit for an extended

period of time in areas of high humidity or in an

environment directly exposing it to sea wind or salt

spray.

••Do not install the unit on a defective or damaged

installation stand, or in an unsecure location.

••Ensure the unit is installed at a level position

••Do not install the unit where noise or air discharge

created by the outdoor unit will negatively impact the

environment or nearby residences.

••Do not expose skin directly to the air discharged by

the unit for prolonged periods of time.

••Ensure the unit operates in areas water or other

liquids.

••Ensure the drain hose is installed correctly to ensure

proper water drainage.

••When lifting or transporting the unit, it is

recommended that two or more people are used for

this task.

••When the unit is not to be used for an extended time,

disconnect the power supply or turn off the breaker.

Safety Precautions 2 

Safety Precautions 3 

2. Information Disclosures

(For flammable materials)

2.1 Checks to the area

• Prior to beginning work on systems containing flammable

refrigerants, safety checks are necessary to ensure that the

risk of ignition is minimized.

• For repair to the refrigerating system, the following

precautions shall be complied with prior to conducting work

on the system.

2.2 Work procedure

• Work shall be undertaken under a controlled procedure so

as to minimise the risk of a flammable gas or vapour being

present while the work is being performed.

2.3 Work procedure

• All maintenance staff and others working in the local area

shall be instructed on the nature of work being carried out.

• Work in confined spaces shall be avoided.

• The area around the work space shall be sectioned off.

Ensure that the conditions within the area have been made

safe by control of flammable material.

2.4 Checking for presence of refrigerant

• The area shall be checked with an appropriate refrigerant

detector prior to and during work, to ensure the technician

is aware of potentially flammable atmospheres.

• Ensure that the leak detection equipment being used is

suitable for use with flammable refrigerants, i.e. no sparking,

adequately sealed or intrinsically safe.

2.5 Presence of fire extinguisher

• If any hot work is to be conducted on the refrigeration

equipment or any associated parts, appropriate fire

extinguishing equipment shall be available to hand.

• Have a dry powder or CO2 fire extinguisher adjacent to the

charging area.

2.6 No ignition sources

• No person carrying out work in relation to a refrigeration

system which involves exposing any pipe work that contains

or has contained flammable refrigerant shall use any sources

of ignition in such a manner that it may lead to the risk of

fire or explosion.

• All possible ignition sources, including cigarette smoking,

should be kept sufficiently far away from the site of

installation, repairing, removing and disposal, during which

flammable refrigerant can possibly be released to the

surrounding space.

• Prior to work taking place, the area around the equipment

is to be surveyed to make sure that there are no flammable

hazards or ignition risks.

• NO SMOKING signs shall be displayed.

2.7 Ventilated area

• Ensure that the area is in the open or that it is adequately

ventilated before breaking into the system or conducting any

hot work. A degree of ventilation shall continue during the

period that the work is carried out. The ventilation should

safely disperse any released refrigerant and preferably expel

it externally into the atmosphere.

2.8 Checks to the refrigeration equipment

• Where electrical components are being changed,

they shall be fit for the purpose and to the correct

specification. At all times the manufacturer’s

maintenance and service guidelines shall be followed.

If in doubt consult the manufacturer’s technical

department for assistance. The following checks

shall be applied to installations using flammable

refrigerants:

• the charge size is in accordance with the room size

within which the refrigerant containing parts are

installed;

• the ventilation machinery and outlets are operating

adequately and are not obstructed;

• if an indirect refrigerating circuit is being used, the

secondary circuit shall be checked for the presence

of refrigerant; marking to the equipment continues

to be visible and legible.

• markings and signs that are illegible shall be

corrected;

• refrigeration pipe or components are installed in

a position where they are unlikely to be exposed

to any substance which may corrode refrigerant

containing components, unless the components

are constructed of materials which are inherently

resistant to being corroded or are suitably protected

against being so corroded.

2.9 Checks to electrical devices

• Repair and maintenance to electrical components shall

include initial safety checks and component inspection

procedures. If a fault exists that could compromise

safety, then no electrical supply shall be connected to

the circuit until it is satisfactorily dealt with. If the fault

cannot be corrected immediately but it is necessary to

continue operation, an adequate temporary solution

shall be used. This shall be reported to the owner of

the equipment so all parties are advised. Initial safety

checks shall include:

• that capacitors are discharged: this shall be done in

a safe manner to avoid possibility of sparking;

• that there no live electrical components and wiring

are exposed while charging, recovering or purging

the system;

• that there is continuity of earth bonding.

2.10 Repairs to sealed components

• During repairs to sealed components, all electrical

supplies shall be disconnected from the equipment

being worked upon prior to any removal of sealed

covers, etc. If it is absolutely necessary to have an

electrical supply to equipment during servicing, then

a permanently operating form of leak detection shall

be located at the most critical point to warn of a

potentially hazardous situation.

• Particular attention shall be paid to the following to

ensure that by working on electrical components, the

casing is not altered in such a way that the level of

protection is affected. This shall include damage to

cables, excessive number of connections, terminals

not made to original speciﬁcation, damage to seals,

incorrect ﬁtting of glands, etc.

• Ensure that apparatus is mounted securely.

• Ensure that seals or sealing materials have not

degraded such that they no longer serve the

purpose of preventing the ingress of ﬂammable

atmospheres. Replacement parts shall be in

accordance with the manufacturer’s speciﬁcations.

NOTE: The use of silicon sealant may inhibit the

effectiveness of some types of leak detection equipment.

Intrinsically safe components do not have to be isolated

prior to working on them.

2.11 Repair to intrinsically safe components

• Do not apply any permanent inductive or capacitance

loads to the circuit without ensuring that this will not

exceed the permissible voltage and current permitted

for the equipment in use. Intrinsically safe components

are the only types that can be worked on while live

in the presence of a ﬂammable atmosphere. The test

apparatus shall be at the correct rating.

• Replace components only with parts speciﬁed by the

manufacturer. Other parts may result in the ignition of

refrigerant in the atmosphere from a leak.

2.12 Cabling

• Check that cabling will not be subject to wear,

corrosion, excessive pressure, vibration, sharp edges

or any other adverse environmental effects. The check

shall also take into account the effects of aging or

continual vibration from sources such as compressors

or fans.

2.13 Detection of flammable refrigerants

• Under no circumstances shall potential sources of

ignition be used in the searching for or detection of

refrigerant leaks. A halide torch (or any other detector

using a naked ﬂame) shall not be used.

2.14 Leak detection methods

• The following leak detection methods are deemed

acceptable for systems containing ﬂammable

refrigerants. Electronic leak detectors shall be used

to detect ﬂammable refrigerants, but the sensitivity

may not be adequate, or may need re-calibration.

(Detection equipment shall be calibrated in a

refrigerant-free area.) Ensure that the detector is not

a potential source of ignition and is suitable for the

refrigerant used. Leak detection equipment shall be

set at a percentage of the LFL of the refrigerant and

shall be calibrated to the refrigerant employed and

the appropriate percentage of gas (25 % maximum)

is conﬁrmed. Leak detection ﬂuids are suitable for

use with most refrigerants but the use of detergents

containing chlorine shall be avoided as the chlorine

may react with the refrigerant and corrode the copper

pipe-work.

• If a leak is suspected, all naked ﬂames shall be

removed or extinguished.

• If a leakage of refrigerant is found which requires

brazing, all of the refrigerant shall be recovered

from the system, or isolated (by means of shut off

valves) in a part of the systemremote from the leak.

Oxygen free nitrogen (OFN) shall then be purged

through the system both before and during the

brazing process.

2.15 Removal and evacuation

• When breaking into the refrigerant circuit to make

repairs or for any other purpose, conventional

procedures shall be used. However, it is important

that best practice is followed since ﬂammability is a

consideration.

• The following procedure shall be adhered to:

• remove refrigerant;

• purge the circuit with inert gas;

• evacuate;

• purge again with inert gas;

• open the circuit by cutting or brazing.

Safety Precautions 4 

• The refrigerant charge shall be recovered into the

correct recovery cylinders. The system shall be flushed

with OFN to render the unit safe. This process may

need to be repeated several times. Compressed air or

oxygen shall not be used for this task. Flushing shall

be achieved by breaking the vacuum in the system

with OFN and continuing to fill until the working

pressure is achieved, then venting to atmosphere, and

finally pulling down to a vacuum. This process shall

be repeated until no refrigerant is within the system.

When the final OFN charge is used, the system shall

be vented down to atmospheric pressure to enable

work to take place. This operation is absolutely vital if

brazing operations on the pipe-work are to take place.

• Ensure that the outlet for the vacuum pump is not

close to any ignition sources and there is ventilation

available.

2.16 Charging procedures

• In addition to conventional charging procedures, the

following requirements shall be followed:

• Ensure that contamination of different refrigerants

does not occur when using charging equipment.

Hoses or lines shall be as short as possible to

minimize the amount of refrigerant contained in

them.

• Cylinders shall be kept upright.

• Ensure that the refrigeration system is earthed prior

to charging the system with refrigerant.

• Label the system when charging is complete (if not

already).

• Extreme care shall be taken not to overﬁll the

refrigeration system.

• Prior to recharging the system it shall be pressure

tested with OFN. The system shall be leak tested on

completion of charging but prior to commissioning.

A follow up leak test shall be carried out prior to

leaving the site.

2.17 Decommissioning

Before carrying out this procedure, it is essential that the

technician is completely familiar with the equipment and

all its detail. It is recommended good practice that all

refrigerants are recovered safely. Prior to the task being

carried out, an oil and refrigerant sample shall be taken.

In case analysis is required prior to re-use of reclaimed

refrigerant. It is essential that electrical power is available

before the task is commenced.

• Become familiar with the equipment and its operation.

• Isolate system electrically.

• Before attempting the procedure ensure that:

•mechanical handling equipment is available, if

required, for handling refrigerant cylinders;

•all personal protective equipment is available and

being used correctly;

•the recovery process is supervised at all times by a

competent person;

•recovery equipment and cylinders conform to the

appropriate standards.

• Pump down refrigerant system, if possible.

• If a vacuum is not possible, make a manifold so that

refrigerant can be removed from various parts of the

system.

• Make sure that cylinder is situated on the scales before

recovery takes place.

• Start the recovery machine and operate in accordance

with manufacturer’s instructions.

• Do not overfill cylinders. (No more than 80 % volume

liquid charge).

• Do not exceed the maximum working pressure of the

cylinder, even temporarily.

• When the cylinders have been filled correctly and the

process completed, make sure that the cylinders and

the equipment are removed from site promptly and all

isolation valves on the equipment are closed off.

• Recovered refrigerant shall not be charged into

another refrigeration system unless it has been cleaned

and checked.

2.18 Labelling

• Equipment shall be labelled stating that it has been de-

commissioned and emptied of refrigerant.

• The label shall be dated and signed. Ensure

that there are labels on the equipment stating the

equipment contains ﬂammable refrigerant.

2.19 Recovery

• When removing refrigerant from a system, either for

servicing or decommissioning, it is recommended good

practice that all refrigerants are removed safely.

• When transferring refrigerant into cylinders, ensure

that only appropriate refrigerant recovery cylinders

are employed. Ensure that the correct numbers of

cylinders for holding the total system charge are

available. All cylinders to be used are designated

for the recovered refrigerant and labelled for that

refrigerant (i.e. special cylinders for the recovery of

refrigerant). Cylinders shall be complete with pressure

relief valve and associated shut-off valves in good

working order.

Safety Precautions 5 

• Empty recovery cylinders are evacuated and, if

possible, cooled before recovery occurs.

• The recovery equipment shall be in good working

order with a set of instructions concerning the

equipment that is at hand and shall be suitable for the

recovery of ﬂammable refrigerants. In addition, a set

of calibrated weighing scales shall be available and in

good working order.

• Hoses shall be complete with leak-free disconnect

couplings and in good condition. Before using the

recovery machine, check that it is in satisfactory

working order, has been properly maintained and that

any associated electrical components are sealed to

prevent ignition in the event of a refrigerant release.

Consult manufacturer if in doubt.

• The recovered refrigerant shall be returned to the

refrigerant supplier in the correct recovery cylinder,

and the relevant Waste Transfer Note arranged. Do not

mix refrigerants in recovery units and especially not in

cylinders.

• If compressors or compressor oils are to be removed,

ensure that they have been evacuated to an

acceptable level to make certain that ﬂammable

refrigerant does not remain within the lubricant.

The evacuation process shall be carried out prior to

returning the compressor to the suppliers. Only electric

heating to the compressor body shall be employed

to accelerate this process. When oil is drained from a

system, it shall be carried out safely.

Safety Precautions 6 

Contents

Specifications

Model Reference.............................................................................................................................2

Pipe Length and Drop Height......................................................................................................3

Refrigerant Cycle Diagrams........................................................................................................4

Electrical Wiring Diagrams..........................................................................................................8

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