DuctlessAire ES Series, DA1221-H2-O, DA1821-H2-I, DA1221-H2-I, DA1821-H2-O Service Manual

DuctlessAire ES Series

Service Manual 2016

ABSSA-B4-1601

CONTENTS

1.

Precaution ......................................................................................................................... 1

1.1 Safety Precaution ................................................................................................... 1

1.2 Warning .............................................................................................................................. 1

2.

Model list .......................................................................................................................... 4

3. Dimension

........................................................................................................................ 5

3.1 Indoor Unit .......................................................................................................................... 5

3.2 Outdoor Unit........................................................................................................................ 7

4. Refrigerant Cycle Diagram

.............................................................................................. 11

5 Installation

Details ........................................................................................................... 12

5.1 Wrench torque sheet for installation ................................................................................ 12

5.2 Connecting the cables ....................................................................................................... 12

5.3 Pipe length and the elevation ............................................................................................ 13

5.4 Installation for the first time.............................................................................................. 14

5.5 Adding the refrigerant after running the system for many years ...................................... 15

5.6 Re-installation while the indoor unit needs to be repaired ...................................................... 15

5.7 Re-installation while the outdoor unit needs to be repaired ............................................ 16

6. Operation

Characteristics ............................................................................................... 18

7. Electronic

function .......................................................................................................... 19

7.1 Abbreviation ...................................................................................................................... 19

7.2 Display function ............................................................................................ 19

7.3 Main Protection ................................................................................................................. 20

7.4 Operation Modes and Functions ....................................................................................... 21

8.

Troubleshooting .............................................................................................................. 27

8.1 Indoor Unit Error Display ................................................................................................... 28

8.2 Troubleshooting ................................................................................................................. 29

1

1. Precaution

1.1 Safety Precaution

 To prevent injury to the user or other

people and property damage, the
following instructions must be
followed.

 Incorrect operation due to ignoring

instruction will cause harm or damage.

 Before servicing the unit, be sure to

read this service manual.

1.2 Warning

 Installation

 Do not use a defective or underrated

circuit breaker. Use this appliance on a
dedicated circuit.

There is risk of fire or electric shock.

 For electrical work, contact the dealer,

seller, a qualified electrician, or an
authorized service center.

Do not disassemble or repair the
product. There is risk of fire or electric
shock.

 Always ground the product.

There is risk of fire or electric shock.

 Install the panel and the cover of

control box securely.

There is risk of fire or electric shock.

 Install the panel and the cover of

control box securely.

There is risk of fire or electric shock.

 Always install a dedicated circuit and

breaker.

Improper wiring or installation may
cause fire or electric shock.

 Use the correctly rated breaker of fuse.

There is risk of fire or electric shock.

 Do not modify or extend the power

cable.

There is risk of fire or electric shock.

 Do not install, remove, or reinstall the

unit by yourself (customer).

There is risk of fire, electric shock,
explosion, or injury.

 Use caution when unpacking and

installing the product.

Sharp edges could cause injury, be
especially careful of the case edges and
the fins on the condenser and
evaporator.

 For installation, always contact the

dealer or an authorized service center.

 Do not install the product on a

defective installation stand.

 Be sure the installation area does not

deteriorate with age.

If the base collapses, the air conditioner
could fall with it, causing property
damage, product failure, and personal
injury.

 Do not let the air conditioner run for a

long time when the humidity is very
high and a door or a window is left
open.

 Take care to ensure the power cable

could not be pulled out or damaged
during operation.

There is risk of fire or electric shock.

 Do not place anything on the power

cable.

There is risk of fire or electric shock.

 Do not plug or unplug the power

supply plug during operation.

There is risk of fire or electric shock.

 Do not touch or operate the product

with wet hands, or while standing in
water.

 Do not place a heater or other

appliance near the power cable.

There is risk of fire or electric shock.

 Do not allow water to run into

electrical parts.

It may cause fire, failure of the product,
or electric shock.

 Do not store or use flammable or

combustible gas near the product.

There is risk of fire or failure of product.

2

 Do not use the product in a tightly

closed space for a long time.

Oxygen deficiency could occur.

 When flammable gas leaks, turn off the

gas and open a window for ventilation
before turning the product on.

 If strange sounds or smoke comes from

product, turn the breaker off or
disconnect the power supply cable.

There is risk of electric shock or fire.

 Stop operation and close the window

in storm or hurricane. If possible,
remove the product from the window
before the hurricane arrives.

There is risk of property damage, failure
of product, or electric shock.

 Do not open the inlet grill of the

product during operation. (Do not
touch the electrostatic filter, if the unit
is so equipped.)

There is risk of physical injury, electric
shock, or product failure.

 When the product is soaked, contact

an authorized service center.

There is risk of fire or electric shock.

 Be sure water could not enter the

product.

There is risk of fire, electric shock, or
product damage.

 Ventilate the product from time to

time when operating it together with a
stove etc.

There is risk of fire or electric shock.

 Turn the main power off when cleaning

or maintaining the product.

There is risk of fire or electric shock.

 When the product will not be used for

a long time, disconnect the power
supply plug or turn off the breaker.

There is risk of product damage or
failure, or unintended operation.

 Take care to ensure that nobody could

step on or fall onto the outdoor unit.

This could result in personal injury and
product damage.

 CAUTION

 Always check for gas (refrigerant)

leakage after installation or repair of
product.

Low refrigerant levels may cause failure
of product.

 Install the drain hose to ensure that

water is drained away properly.

A bad connection may cause water
leakage.

 Keep level even when installing the

product.

It can avoid vibration of water leakage.

 Do not install the product where the

noise or hot air from the outdoor unit
could damage the surrounding.

It may cause a problem for your
neighbors.

 Use two or more people to lift and

transport the product.

 Do not install the product where it will

be directly exposed to sea wind (salt
spray).

It may cause corrosion on the product.
Corrosion, particularly on the condenser
and evaporator fins, could cause
product malfunction or inefficient
operation.

 Operational

 Do not expose the skin directly to cool

air for long periods of time. (Do not sit
in the draft.)

 Do not use the product for special

purposes, such as preserving foods,
works of art, etc. It is a consumer air
conditioner, not a precision refrigerant
system.

There is risk of damage or loss of
property.

 Do not block the inlet or outlet of air

flow.

 Use a soft cloth to clean. Do not use

harsh detergents, solvents, etc.

There is risk of fire, electric shock, or
damage to the plastic parts of the
product.

3

 Do not step on or put anything on the

product (outdoor units).

 Always insert the filter securely. Clean

the filter every two weeks or more
often if necessary.

A dirty filter reduces the efficiency of
the air conditioner and could cause
product malfunction or damage.

 Do not insert hands or other objects

through the air inlet or outlet while the
product is operated.

 Do not drink the water drained from

the product.

 Use a firm stool or ladder when

cleaning or maintaining the product.

Be careful and avoid personal injury.

 Replace all the batteries in the remote

control with new ones of the same
type. Do not mix old and new batteries
or different types of batteries.

There is risk of fire or explosion.

 Do not recharge or disassemble the

batteries. Do not dispose of the
batteries in a fire.

They may burn or explode.

 If the liquid from the batteries gets

onto your skin or clothes, wash
thoroughly with clean water. Do not
use the remote if the batteries have
leaked.

4

2. Model List

Model Names of Indoor/Outdoor Units

3D inverter

Capacity Indoor units

Outdoor units

12K

DA1221-H2-I

DA1221-H2-O

18k

DA1821-H2-I

DA1821-H2-O

24K

DA2421-H2-I

DA2421-H2-O

5

3. Dimension

3.1 Indoor Unit

Model

W D H

DA1221-H2-I

802

189

297

DA1821-H2-I

1080

226

335

DA2421-H2-I

1080

226

335

6

For DA1221-H2-I,

For DA1821-H2-I, DA2421-H2-I,

7

3.2 Outdoor Unit

More than 30cm

More than

30cm

More than

60cm

More than 200cm

More than 60cm
(Service space)

8

For

DA1221-H2-O,

9

For

DA1821-H2-O,

10

For

DA2421-H2-O,

11

4. Refrigerant Cycle

Diagram

12

5. Installation Details

5.1 Wrench torque sheet for installation

Outside diameter

Torque

Additional tightening torque

mm

inch

N.cm

N.cm

Ф6.35

1/4

1500(153kgf.cm)

1600(163kgf.cm)

Ф9.52

3/8

2500(255kgf.cm)

2600(265kgf.cm)

Ф12.7

1/2

3500(357kgf.cm)

3600(367kgf.cm)

Ф15.9

5/8

4500(459kgf.cm)

4700(479kgf.cm)

Ф19

3/4

6500(663kgf.cm)

6700(683kgf.cm)

5.2 Connecting the cables

The power cord of connect should be selected according to the following specifications sheet.

Rated current of appliance

Nominal cross-sectional area (mm

²

)

>3 and ≤6

0.75

>6 and ≤10

1

>10 and ≤16

1.5

>16 and ≤25

2.5

>25 and ≤32

4

The cable size and the current of the fuse or switch are determined by the maximum current indicated on the
nameplate which is located on the side panel of the unit. Please refer to the nameplate before selecting the cable, fuse
and switch.

13

5.3 Pipe length and the elevation

The pipe length and refrigerant amount:

Model

Pipe size

Standard

length

(m)

Max.

Elevation

B (m)

Max.

Length

A (m)

Additional

refrigerant

(g/m)

Gas Liquid

DA1221-H2-I + DA1221-H2-O

1/2’’

(Ф12.7)

1/4’’

(Ф6.35)

7.5 10 25 15

DA1821-H2-I + DA1821-H2-O

1/2’’

(Ф12.7)

1/4’’

(Ф6.35)

7.5 20 30 15

DA2421-H2-I + DA2421-H2-O

5/8’’

(Ф15.9)

3/8’’

(Ф9.52)

7.5 25 50 30

Caution:

The capacity test is based on the standard length, and the maximum permissive length is based on the system

reliability.

14

5.4 Installation for the first time

Air and moisture in the refrigerant system have
undesirable effects as below:

 Pressure in the system rises.
 Operating current rises.
 Cooling or heating efficiency drops.
 Moisture in the refrigerant circuit may freeze and

block capillary tubing.

 Water may lead to corrosion of parts in the

refrigerant system.

Therefore, the indoor units and the pipes between
indoor and outdoor units must be leak tested and
evacuated to remove gas and moisture from the
system.

Gas leak check (Soap water method):
Apply soap water or a liquid neutral detergent
on the indoor unit connections or outdoor unit
connections by a soft brush to check for leakage of
the connecting points of the piping. If bubbles come
out, the pipes have leakage.

1. Air purging with vacuum pump

1) Completely tighten the flare nuts of the indoor and
outdoor units, confirm that both the 2-way and
3-way valves are set to the closed position.

2) Connect the charge hose with the push pin of
handle lo to the 3-way valves gas service port.

3) Connect the charge hose of handle hi connection
to the vacuum pump.

4) Fully open the handle Lo of the manifold valve.

5) Operate the vacuum pump to evacuate.

6) Make evacuation for 30 minutes and check
whether the compound meter indicates

-0.1Mpa. If the meter does not indicate

-0.1Mp after pumping 30 minutes, it should
be pumped 20 minutes more. If the pressure
can’t achieve -0.1Mpa after pumping 50
minutes, please check if there are some
leakage points.

7) Fully close the handle Lo valve of the manifold
valve and stop the operation of the vacuum
pump. Confirm that the gauge needle does
not move (approximately 5 minutes after
turning off the vacuum pump).

8) Turn the flare nut of the 3-way valves about
45°

counterclockwise for 6 or 7seconds
after the gas comes out, then tighten the
flare nut again. Make sure the pressure
display in the pressure indicator is a little
higher than the atmosphere pressure. Then
remove the charge hose from the 3 way
valve.

9) Fully open the 2 way valve and 3 way valve and
securely tighten the cap of the 3 way valve.

2. Air purging by refrigerant

Procedure:

1) Confirm that both the 2-way and 3-way valves are
set to the closed position.

2) Connect the charge set and a charging
cylinder to the service port of the 3-way valve.

15

3) Air purging­ Open the valves on the charging cylinder and the

charge set. Purge the air by loosening the flare
nut on the 2-way valve approximately 45’ for 3
seconds then closing it for 1 minute; repeat 3
times.

After purging the air, use a torque wrench to

tighten the flare nut on the 2-way valve.

4) Check the gas leakage. Check the flare connections
for gas leakage.

5) Discharge the refrigerant. Close the valve on the
charging cylinder and discharge the refrigerant
by loosening the flare nut on the 2-way valve
approximately 45’ until the gauge indicates 0.3 to

0.5 Mpa.

6) Disconnect the charge set and the charging cylinder,
and set the 2-way and 3-way valves to the open
position. Be sure to use a hexagonal wrench to
operate the valve stems.

7) Mount the valve stems nuts and the service
port cap. Be sure to use a torque wrench to
tighten the service port cap to a torque 18N·m.
Be sure to check the gas leakage.

5.5 Adding the refrigerant after running the
system for many years

Procedure:

1) Connect the charge hose to the 3-way service
port. Open the 2-way valve and the 3-way
valve. Connect the charge hose to the valve
at the bottom of the cylinder. If the refrigerant
is R410A, make the cylinder bottom up to
ensure liquid charge.

2) Purge the air from the charge hose. Open the
valve at the bottom of the cylinder and press
the check valve on the charge set to purge the
air (be careful of the liquid refrigerant).

3) Put the charging cylinder onto the electronic scale
and record the weight.

4) Operate the air conditioner at the cooling
mode.

5) Open the valves (Low side) on the charge set and
charge the system with liquid refrigerant.

6) When the electronic scale displays the proper
weight (refer to the gauge and the pressure of
the low side), disconnect the charge hose
from the 3-way valve’s service port
immediately and turn off the air conditioner
before disconnecting the hose.

7) Mount the valve stem caps and the service
port. Use torque wrench to tighten the service
port cap to a torque of 18N.m. Be sure to check
for gas leakage.

5.6 Re-installation while the indoor unit needs
to be repaired

1. Collecting the refrigerant into the outdoor unit

Procedure

1) Confirm that both the 2-way and 3-way valves

are set to the opened position. Remove the
valve stem caps and confirm that the valve
stems are in the opened position. Be sure to
use a hexagonal wrench to operate the valve
stems.

16

2) Connect the charge hose with the push pin of
handle lo to the 3-way valves gas service port.

3) Air purging of the charge hose. Open the handle Lo
valve of the manifold valve slightly to purge air
from the charge hose for 5 seconds and then
close it quickly.

4) Set the 2-way valve to the close position.

5) Operate the air conditioner at the cooling cycle and
stop it when the gauge indicates 0.1MPa.

6) Set the 3-way valve to the closed position
immediately

Do this quickly so that the gauge ends up indicating

0.3 to 0.5Mpa.

Disconnect the charge set, and tighten the 2-way

and 3-way valve’s stem nuts.

Use a torque wrench to tighten the 3-way valves

service port cap to a torque of 18N.m.

Be sure to check for gas leakage.

2. Air purging by the refrigerant

Procedure:

5) Discharge the refrigerant. Close the valve on the
charging cylinder and discharge the
refrigerant by loosening the flare nut on the
2-way valve approximately 45’ until the gauge
indicates 0.3 to 0.5 Mpa.

6) Disconnect the charge set and the charging
cylinder, and set the 2-way and 3-way valves to
the open position. Be sure to use a hexagonal
wrench to operate the valve stems.

7) Mount the valve stems nuts and the service
port cap. Be sure to use a torque wrench
to tighten the service port cap to a torque
18N.m. Be sure to check the gas leakage.

5.7 Re-installation while the outdoor unit needs to
be repaired

1. Evacuation for the whole system

Procedure:

1) Confirm that both the 2-way and 3-way valves
are set to the opened position.

2) Connect the vacuum pump to 3-way valve’s
service port.

3) Evacuation for approximately one hour. Confirm
that the compound meter indicates -0.1Mpa.

4) Close the valve (Low side) on the charge set, turn
off the vacuum pump, and confirm that the
gauge needle does not move (approximately
5 minutes after turning off the vacuum pump).

5) Disconnect the charge hose from the vacuum
pump.

2. Refrigerant charging

Procedure:

1) Connect the charge hose to the charging cylinder,
open the 2-way valve and the 3-way valve.
Connect the charge hose which you disconnected
from the vacuum pump to the valve at the bottom

17

of the cylinder. If the refrigerant is R410A, make
the cylinder bottom up to ensure liquid charge.

2) Purge the air from the charge hose. Open the valve
at the bottom of the cylinder and press the check
valve on the charge set to purge the air (be careful
of the liquid refrigerant).

3) Put the charging cylinder onto the electronic scale
and record the weight.

4) Open the valves (Low side) on the charge set and
charge the system with liquid refrigerant. If the
system cannot be charge with the specified amount
of refrigerant, or can be charged with a little at a
time (approximately 150g each time), operating
the air conditioner in the cooling cycle; however,
one time is not sufficient, wait approximately 1
minute and then repeat the procedure.

5) When the electronic scale displays the proper
weight, disconnect the charge hose from the 3-way
valve’s service port immediately. If the system has
been charged with liquid refrigerant while
operating the air conditioner, turn off the air
conditioner before disconnecting the hose.

6) Mounting the valve stem caps and the service port.

Use torque wrench to tighten the service port
cap to a torque of 18N.m. Be sure to check for gas
leakage.

18

6. Operation Characteristics

CAUTION:

1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into

operation and cause the unit to operate abnormally.

2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this figure, the

surface of the air conditioner may attract condensation. Please set the vertical air flow louver to its maximum

angle (vertically to the floor), and set HIGH fan mode.

3. The optimum performance will be achieved during this operating temperature zone.

19

7. Electronic function

7.1 Abbreviation

T1: Indoor room temperature

T2: Coil temperature of evaporator.

T3: Coil temperature of condenser.

T4: Outdoor ambient temperature.

T5: Compressor discharge temperature

7.2 Display function

7.2.1 Icon explanation on indoor display board.

Digital display:

Displays the temperature settings when the air

conditioner is operational.

Displays the room temperature in FAN mode.

Displays the self-diagnostic codes.

Displays ‘ ’ for three seconds when Timer

ON, Fresh, Swing, Turbo or Silence feature is

activated.

Displays ‘ ’ for three seconds when Fresh,

Swing, Turbo or Silence feature is cancelled.

Displays ‘ ’ under defrosting operation. Displays

‘ ’ when anti-cold air feature is activated

under heating mode.

Displays ‘ ’ during self clean operation (if

applicable).

Displays ‘ ’ under 8℃ heating operation (if

applicable).

When ECO function (optional) is active, the

“ ” illuminates gradually one by one as

In one second intervals.

NOTE:

A guide on using the infrared remote is not

included in this literature package.

20

7.3 Main Protection

7.3.1 Three minutes delay at restart for
compressor

1 minute delay for the 1st time stand-up and 3
minutes delay for others.

7.3.2 Temperature protection of compressor top
The unit will stop working when the compressor
top temp. protector cuts off, and will restart after
the compressor top temp. protector restarts.

7.3.3 Temperature protection of compressor
discharge

Compressor discharge temp. T5>115˚C for 5s,
compressor stops.

7.3.4 Fan speed is out of control

When indoor fan speed keeps too low (300RPM) for
certain time, the unit will stop and the LED will
display the failure.

7.3.5 Inverter module protection
The Inverter module has a protection function about
current, voltage and temperature. If these
protections happen, the corresponding code will
display on indoor unit and the unit will stop working.

7.3.6 Indoor fan delayed open function
When the unit starts up, the louver will be active
immediately and the indoor fan will open 7sec. later.
If the unit runs in heating mode, the indoor fan will
be also controlled by anti-cold wind function.

7.3.7 Compressor preheating functions
Preheating permitting condition:
When T4(outdoor ambient temperature)＜3˚C, the
preheating function will be activated.

7.3.8 Sensor protection at open circuit and
breaking disconnection.

When there’s only one temperature sensor in
malfunction, the air conditioner will keep working
but show the error code, in case of any emergency

use.
When there’s more than one temperature sensor in
malfunction, the air conditioner will stop working.

7.3.9 Refrigerant leakage detection
This function is only active in cooling mode. It can better
prevent the compressor from being damaged by
refrigerant leakage or compressor overload.
Open condition:
When compressor is active, the value of the Coil
temperature of evaporator T2 has no change or very little
change.

21

7.4 Operation Modes and Functions

7.4.1 Fan mode

(1) Outdoor fan and compressor stop.

(2) Temperature setting function is disabled, and no
setting temperature is displayed.
(3) Indoor fan can be set to
high/med/low/auto.
(4) The louver operates same as in cooling mode.
(5) Auto fan:

7.4.2 Cooling Mode

7.4.2.1 Compressor running rules

When T1-Ts<ΔT -2˚C, the compressor will stop,

when T1—Ts >ΔT -0.5˚C, the compressor will be
activated.

ΔT is the programmed parameter of
temperature compensation.
When the AC runs in mute mode, the compressor
will run with low frequency. When the current is
more than setting value, the current protection
function will be activated, and the compressor will
stop.

7.4.2.2 Outdoor fan running rules

The outdoor unit will run at different fan speeds
according to T4.
For different outdoor units, the fan speeds are
different.

7.4.2.2 Indoor fan running rules

In cooling mode, indoor fan runs all the time and the
speed can be selected as high, medium, low and
auto.
The indoor fan is controlled as below:

The auto fan acts as below rules:

7.4.2.4 Condenser temperature protection

22

When condenser temperature temp. is more than
setting value, the compressor will stop.

7.4.2.5 Evaporator temperature protection

When Evaporator temperature is less than setting
value, the compressor will stop.

7.4.3 Heating Mode

7.4.3.1 Compressor running rules

When T1-Ts>-ΔT, the compressor will stop. When T1­Ts<ΔT-1.5, the compressor will be on. ΔT is the

programmed parameter of temperature
compensation. When the AC runs in mute mode, the
compressor will run with low frequency. When the
current is more than setting value, the current
protection function will be activated and the
compressor will stop.

7.4.3.2 Outdoor fan running rules

The outdoor unit will run at different fan speeds
according to T4.
For different outdoor units, the fan speeds are
different.

7.4.3.3 Indoor fan running rules

When the compressor is on, the indoor fan can be set
to high/med/low/auto, and the anti-cold wind
function has the priority.

The indoor fan is controlled as below:

Auto fan action in heating mode:

7.4.3.4 Defrosting mode

AC will enter the defrosting mode according to the
value of temp. of T3 and the value range of temp.
change of T3 and also the compressor running time.
During the defrosting mode, the compressor keeps
running, indoor and outdoor motor will stop, defrost
lamp of the indoor unit will be lit.

“ ” will be displayed.

If any one of the following items is satisfied, the
defrosting will finish and the machine will turn to
normal heating mode.

----T3 rises to be higher than TCDE1˚C.

----T3 keeps to be higher than TCDE2˚C for 80
seconds.

----The machine has run for 15 minutes in
defrosting mode.

23

7.4.3.5 Evaporator coil temperature protection

7.4.4 Auto-mode

This mode can be chosen with remote controller
and the setting temperature can be changed
between 17˚C~30˚C.
In auto mode, the machine will choose cooling,
heating or fan-only mode according to ΔT (ΔT
=T1-Ts).

ΔT=T1-Ts

Running mode

ΔT＞2℃

Cooling

-2≤ΔT≤2℃

Fan-only

ΔT<-2℃

Heating

Indoor fan will run at auto fan of the relevant
mode.
The louver operates same as in relevant mode. If the
machine switches mode between heating and
cooling, the compressor will keep stopping for 15
minutes and then choose mode according to T1-Ts.
If the setting temperature is modified, the
machine will choose running function again.

7.4.5 Drying mode
Indoor fan speed is fixed at breeze and can’t be
changed. The louver angle is the same as in cooling
mode.

All protections are active and the same as that in
cooling mode.

7.4.6 Forced operation function

Forced cooling mode:
The compressor and outdoor fan keep running and
the indoor fan runs at low speed. After running for 30
minutes, AC will turn to auto mode with 24˚C setting
temperature.

Forced auto mode:
The action of forced auto mode is the same as normal
auto mode with 24˚C setting temperature.
When AC receives signals, such as switch on, switch off,
timer on, timer off, mode setting, fan speed setting,
sleeping mode setting, follow me setting, it will quit the
forced operation.

7.4.7 Timer function

7.4.7.1 Timing range is 24 hours.

7.4.7.2 Timer on. The machine will turn on automatically
when reaching the setting time.

7.4.7.3 Timer off. The machine will turn off automatically
when reaching the setting time.

7.4.7.4 Timer on/off. The machine will turn on
automatically when reaching the setting “on” time, and
then turn off automatically when reaching the setting
“off” time.

7.4.7.5 Timer off/on. The machine will turn off
automatically when reaching the setting “off” time, and
then turn on automatically when reaching the setting
“on” time.

7.4.7.6 The timer function will not change the AC current
operation mode. Suppose AC is off now, it will not start
up firstly after setting the “timer off” function. And when
reaching the setting time, the timer LED will be off and
the AC running mode has not been changed.

7.4.7.7 The setting time is relative time.

7.4.7.8 The AC will quit the timer function when it has
malfunction.

7.4.8 Economy function

7.4.8.1 The sleep function is available in cooling, heating
or auto mode.

7.4.8.2. Operation process in sleep mode is as follows:
When cooling, the setting temperature rises 1˚C (be
lower than 30˚C) every one hour, 2 hours later the
setting temperature stops rising and the indoor fan is
fixed at low speed.

When heating, the setting temperature decreases 1˚C (be

higher than 17˚C) every one hour, 2 hours later the setting
temperature stops rising and indoor fan is fixed at low
speed. (Anti-cold wind function has the priority).

24

7.4.8.3 Operation time in sleep mode is 7 hours. After 7
hours the AC quits this mode and turns off.

7.4.8.4 Timer setting is available.

7.4.9 Auto-Restart function

The indoor unit is equipped with auto-restart function,
which is carried out through an auto-restart module.
In case of a sudden power failure, the module
memorizes the setting conditions before the power
failure. The unit will resume the previous operation
setting (not including swing function) automatically
after 3 minutes when power returns.
If the memorization condition is forced cooling mode,
the unit will run in cooling mode for 30 minutes and
turn to auto mode as 24˚C setting temp.
If AC is off before powered off and AC is required to
start up now, the compressor will have 1 minute delay
when powered on. Other conditions, the compressor
will have 3 minutes delay when restarts.

7.4.10 Refrigerant Leakage Detection

With this new technology, the display area will show
“EC” when the outdoor unit detects refrigerant
leakage.

7.4.11 Louver Position Memory Function When
starting the unit again after shutting down, its louver
will restore to the angle originally set by the user,
but the precondition is that the angle must be
within the allowable range, if it exceeds, it will
memorize the maximum angle of the louver. During
operation, if the power fails or the end user shuts
down the unit in the turbo mode, the louver will
restore to the default angle.

7.4.12 8˚C Heating(optional)

In heating operation, the preset temperature of the air
conditioner can be as low as 8˚C, which keeps the
room temperature steady at 8˚C and prevents
household things from freezing when the house is
unoccupied for a long time in severe cold weather.

7.4.13 Self clean(optional)
For heat pump models provided with this function: After
running in cooling or drying mode, once the user presses
“Self Clean” button on remote controller, the indoor unit
runs in fan only mode for a while, then low heat
operation and finally runs in fan only again. This function
can keep the inside of indoor unit dry and prevent
breeding of mold.

7.4.14 Follow me (optional)

1) If the indoor PCB receives the signal which results
from pressing the FOLLOW ME button on remote
controller, the buzzer will emit a sound and this indicates
the follow me function is initiated. But when the indoor
PCB receives a signal sent from the remote controller
every 3 minutes, the buzzer will not respond. When the
unit is running with the FOLLOW ME function, the PCB
will control the unit according to the temperature from
the follow me signal, and the temperature collection
function of room temperature sensor will be shielded,
but the error detective function of room temperature
sensor will be still valid.

2) When the FOLLOW ME function is active, the PCB
will control the unit according to the room
temperature from the remote controller and the
setting temperature.

3) The PCB will take action to the mode change
information from the remote controller signal, but it will
not b e affected by the setting temperature.

4) When the FOLLOW ME function is active and the
PCB doesn’t receive any signal from the remote
controller for 7 minutes or the FOLLOW ME button is not
pressed again, the FOLLOW ME function will be turned off
automatically. The PCB will control the unit according
to the room temperature detected from its own room
temperature sensor and setting

temperature.

7.4.15 Silence operation(optional)
Press the “silence” button on remote controller to initiate

SILENCE function. When the Silence function is activated,
the compressor running frequency will keep lower than
F2 and the indoor unit will bring faint breeze, which will
reduce the noise to the lowest level and create a quiet
and comfortable room for you.

25

7.4.16 Point check function

Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION

or SWING button three times in ten seconds, the buzzer will ring for two seconds. The air conditioner will enter into

the information inquiry status. You can press the LED DISPLAY or AIR DIRECTION button to check the next or front

item’s information.

When the AC enters the “information inquiry” status, it will display the code name in 2 seconds, the details are as

follows:

Inquiry information

Display code

Meaning

T1

T1

T1 temp.

T2

T2

T2 temp.

T3

T3

T3 temp.

T4

T4

T4 temp.

T2B

Tb

T2B temp.

TP

TP

TP temp.

TH

TH

TH temp.

Targeted Frequency

FT

Targeted Frequency

Actual Frequency

Fr

Actual Frequency

Indoor fan speed

IF

Indoor fan speed

Outdoor fan speed

OF

Outdoor fan speed

EXV opening angle

LA

EXV opening angle

Compressor continuous running time

CT

Compressor continuous running time

Causes of compressor stop.

ST

Causes of compressor stop.

Reserve

A0

Reserve

A1

Reserve

b0

Reserve

b1

Reserve

b2

Reserve

b3

Reserve

b4

Reserve

b5

Reserve

b6

Reserve

dL

Reserve

Ac

Reserve

Uo

Reserve

Td

26

When the AC enters into the information inquiry status, it will display the code value in the next 25 seconds.

The details are as follows:

Inquiry
information

Display value

Meaning

Remark

T1, T2, T3, T4, T2B, TP, TH,

Targeted Frequency,

Actual Frequency

-1F,-1E,-1d,­1c,

-25,-24,-23,-22,-21, ­20

1. All the displaying temperature is actual
value.

2. All the temperature is ˚C no matter what

kind of remote controller is used.

3. T1,T2,T3,T4,T2B display range:-25~70, TP

display range:-20~130.

4. Frequency display range: 0~159HZ.

5. If the actual value exceeds the range, it will

display the maximum value or minimum
value.

-19—99

-19—99

A0, A1,…A9

100,101,…109

b0, b1,…b9

110,111,…119

c0, c1,…c9

120,121,…129

d0, d1,…d9

130,131,…139

E0, E1,…E9

140,141,…149

F0, F1,…F9

150,151,…159

Indoor fan speed/

Outdoor fan speed

0

OFF

1, 2, 3 ,4

Low speed,Medium

speed, High speed,

Turbo

For some big capacity motors.

14-FF

Actual fan
speed=Display value
turns to decimal
value and then
multiply 10. The unit
is RPM.

For some small capacity motors, display value
is from 14-FF(hexadecimal), the
corresponding fan speed range is from
200-2550RPM.

EXV opening angle

0-FF

Actual EXV opening
value=Display value
turns to decimal
value and then
multiply 2.

Compressor continuous

running time

0-FF

0-255 minutes

If the actual value exceeds the
range, it will display the maximum
value or minimum value.

Causes of compressor

stop.

0-99

For the detailed
meaning, please
consult with

Decimal display

Reserve

0-FF

27

8. Troubleshooting

Safety

Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the
electricity power in capacitor.

For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, ­terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

Note: The picture above is only for reference. The plug of your side may be different.

28

8.1 Indoor Unit Error Display

Operation

lamp

Timer lamp

Display

LED STATUS

☆ 1 time

X

E0

Indoor unit EEPROM parameter error

☆ 2 times

X

E1

Indoor/outdoor units communication error

☆ 3 times

X

E2

Zero-crossing signal detection error

☆ 4 times

X

E3

Indoor fan speed has been out of control

☆ 5 times

X

E4

Indoor room temperature sensor T1 open circuit or short circuit

☆ 6 times

X

E5

Evaporator coil temperature sensor T2 open circuit or short
circuit

☆ 7 times

X

EC

Refrigerant leakage detection

☆ 1 times

O

F0

Overload current protection

☆ 2 times

O

F1

Outdoor ambient temperature sensor T4 open circuit or short
circuit

☆ 3 times

O

F2

Condenser coil temperature sensor T3 open circuit or short
circuit

☆ 4 times

O

F3

Compressor discharge temperature sensor TP open circuit or
short circuit

☆ 5 times

O

F4

Outdoor unit EEPROM parameter error

☆ 6 times

O

F5

Outdoor fan speed has been out of control

☆ 1 times

☆

P0

IPM malfunction or IGBT over-strong current protection

☆ 2 times

☆

P1

Over voltage or over low voltage protection

☆ 3 times

☆

P2

High temperature protection of IPM module or compressor top

☆ 4 times

☆

P3*

Outdoor ambient temperature too low.

☆ 5 times

☆

P4

Inverter compressor drive error

☆ 6 times

☆

P5

Indoor units mode conflict (multi-zone ONLY)

☆ 7 times

☆

P6

Low pressure protection

O（light） X（off） ☆（flash)

*P3

1) In heating mode, when the outdoor temperature is lower than -25˚C for 1 hour, the indoor unit display
error code P3.

2) If the outdoor temperature is higher than -22˚C for 10 minutes and compressor stop for 1 hour or outdoor
temperature is higher than -5˚C for 10 minutes, then the unit will return to work.

* Fault Symptom: The display board shows a garbled code or a code that is not an error code found in the service
manual or a temperature reading.

Trouble

shooting:

Use the remote controller. If the unit does not respond to the remote, the indoor PCB needs to

be

replaced; if

the unit does respond, then the display board needs to be

replaced.

29

8.2 Trouble shooting

8.2.1 EEPROM parameter error diagnosis and solution(E0/F4)

Error Code

E0/F4

Malfunction decision
conditions

Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.

Supposed causes

● Installation mistake

● PCB faulty

Trouble shooting:

Shut off the power supply

and

turn it

on 2 minutes later. Is

it

still displaying

the error

code?

Yes

No Correct the connection.

Yes

Replace the indoor/outdoor

main PCB.

EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed

voltage. For the

location of EEPROM chip, please refer to the below photos.

Indoor PCB

Outdoor PCB

Note: The two photos above are for reference only and may not match your unit exactly.

If the EEPROM chip is
welded on main PCB,
replace the main PCB
directly. Otherwise,
check whether the
EEPROM chip plugged
in main PCB well?

30

8.2.2 Indoor / outdoor unit’s communication diagnosis and solution(E1)

Error Code

E1

Malfunction decision
conditions

Indoor unit does not receive the feedback from outdoor unit during
110 seconds and this condition happens four times continuously.

Supposed causes

● Wiring mistake

● Indoor or outdoor PCB faulty

Troubleshooting:

Power off, then restart the unit 2 minutes
later.

Is the error extinguished?

No

Measure Vs. Is the voltage alternating

between -25V to 25V?

Yes

Check the outdoor wiring connection。

Is the wiring correctly?

Yes

Check the indoor wiring connection.

Is the wiring correct?

Replace the reactor.

Is the reactor

normal?

Yes

Replace the outdoor main

PCB.

Power on. Is the

error

extinguished?

Replace the indoor main

PCB.

Power on. Is the

error

extinguished?

No

Replace the outdoor main

PCB.

No

Replace the indoor main PCB

.

.

.

Yes

Yes

No

31

Remark:
Use a multi meter to test the resistance of the reactor
which does not connect with capacitor.

The normal value should be around zero ohm.
Otherwise, the reactor must have malfunctioned and
need to be replaced.

32

8.2.3 Fan speed has been out of control diagnosis and solution(E3)

Error Code

E3/F5

Malfunction decision
conditions

When fan speed keeps too low or too high for certain time, the
unit will stop and the LED will display the failure.

Supposed causes

● Wiring mistake

● Fan assembly faulty

● Fan motor faulty

● PCB faulty

Trouble shooting:

Shut off the power

supply

and turn it on 2

minutes

later. Is it still

displaying

the

error

code?

The unit operates normally.

Yes

Shut off the power supply,

rotate the fan by hand. Does

it rotate properly?

Yes

Find out the cause

and

have it

solved.

For

example,

check

whether the fan is

blocked or

the

bearing

is

broken?

Check the wires of

fan

motor. Are all

the

connections

good?

Correct the connections.

Yes

Check whether the main PCB is

normal through index 1?

Replace the main PCB

Yes

Replace the fan motor. Is the

error extinguished?

No

No

No

No

No

33

Index1:

1:Indoor or Outdoor DC Fan Motor(control chip is in fan motor)

Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor connector. If the

value of the voltage is not in the range showing in below table, the PCB must have problems and need to be replaced.

DC motor voltage input and output(voltage: 220-240V~)

NO.

Color

Signal

Voltage

1

Red

Vs/Vm

280V~380V

2

---

---

---

3

Black

GND

0V

4

White

Vcc

14-17.5V

5

Yellow

Vsp

0~5.6V

6

Blue

FG

14-17.5V

DC motor voltage input and output(voltage :115V~)

NO.

Color

Signal

Voltage

1

Red

Vs/Vm

140V~190V

2

---

---

---

3

Black

GND

0V

4

White

Vcc

14-17.5V

5

Yellow

Vsp

0~5.6V

6

Blue

FG

14-17.5V

2. Outdoor DC Fan Motor (control chip is in outdoor PCB)

Power on ,and check if the fan can run normally, if the fan can run normally, the PCB must has problems and need

to be replaced, If the fan can’t run normally, measure the resistance of each two pins. If the resistance is not equal

to each other, the fan motor must have problems and need to be replaced, otherwise the PCB must have problems

and need to be replaced.

3. Indoor AC Fan

Motor

Power on and set the unit running in fan mode at high fan speed. After running for 15

seconds,

measure the voltage of pin1

and pin2. If the value of the voltage is less than

100V(208-240V power

supply)or 50V(115V power supply), the PCB must has

problems and need to be

replaced.

34

8.2.4 Refrigerant Leakage Detection diagnosis and solution(EC)

Error Code

EC

Malfunction decision

conditions

Define the evaporator coil temp.T2 of the compressor just starts running as

Tcool.

In the beginning 8 minutes after the compressor starts up, if T2
＜Tcool－2˚C does not keep continuous 4 seconds and compressor running

frequency higher than 50Hz does not keep continuous 3 minutes, and this

situation happens 3 times, the display area will show “EC” and AC will turn off.

Supposed causes

● T2 sensor faulty

● Indoor PCB faulty

● System problems, such as leakage or blocking.

Trouble shooting:

Shut off the power supply and
turn it on 2 minutes later. Is it
still displaying the error code?

Yes

Is there cool air blowing
out from indoor air outlet?

No

Yes

Check if T2 sensor is

well

fixed. Correct the

installation

or replace T2 sensor.

Does

the

problem remain

again?

Yes

Is there any leakage? Especially

the connection parts, such as the

gas valve and the liquid valve.

No

Yes

Replace indoor

PCB.

Repair the leakage

and

recharge the

refrigerant.

Is there any blocking? (Ex. The capillary or
the welded points of the pipes.)

Yes

Clear the blocking.

35

8.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5)

Error Code

E4/E5/F1/F2/F3

Malfunction decision

conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V,

the LED will display the failure.

Supposed causes

● Wiring mistake

● Sensor faulty

● PCB faulty

Trouble shooting:

Check the connections

between temperature

sensor and main PCB.

Are the connections

good?

No Correct the connections.

Yes

Check the resistance value
of the sensor. Is it normal?

Replace indoor or

outdoor main PCB.

No

Replace the sensor.

Yes

36

8.2.6 Overload current protection diagnosis and solution(F0)

Error Code

F0

Malfunction decision
conditions

An abnormal current rise is detected by checking the specified current
detection circuit.

Supposed causes

● Power supply problems.

● System blockage

● PCB faulty

● Wiring mistake

● Compressor malfunction

Trouble shooting:

Check the power supply. Is it

normal?

Is there any blocking?

Check the compressor resistance

values. Is it normal?

Check the connections and wires.

Is everything well connected?

Check the reactor. Is it normal?

Stop the unit. Check the power

supply.

Clear the blockage.

Replace the compressor.

Correct the connections or

replace the wires.

Replace the reactor.

Replace the outdoor main PCB.
No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

37

Digital tester

Normal resistance value

Digital tester

Normal resistance value

(+)Red

(-)Black

∞

(Several MΩ)

(+)Red

(-)Black

∞

(Several MΩ)

P

N

U

N

U V V

W

W

(+)Red

8.2.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0)

Error Code

P0

Malfunction decision

conditions

When the voltage signal that IPM send to compressor drive chip
is abnormal, the display LED will show “P0” and AC will turn off.

Supposed causes

● Wiring mistake

● IPM malfunction

● Outdoor fan ass’y faulty

● Compressor malfunction

● Outdoor PCB faulty

Trouble shooting:

Check the wiring between main PCB

and compressor. Are the wires and

connectors broken?

Yes

Correct the connection or

replace the wires and

connectors.

No

IPM continuity check. Check if the

IPM terminal resistance values are

uniform.

Replace the IPM board or replace the

main PCB if the IPM board and main

PCB are integrated together.

Yes

Check if the outdoor fan runs

properly or the outdoor unit

ventilation is good.

Please refer to the solution of “Fan Speed Has Been

Out Of Control” malfunction.

Yes

Check if the compressor resistance

values are uniform . Replace the compressor.

Yes

Replace the outdoor main PCB if the
main PCB and IPM are separate.

 IPM continuity check

Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a
digital tester to measure the resistance between P and UVWN; UVW and N.

No

No

No

38

8.2.8 Over voltage or too low voltage protection diagnosis and solution(P1)

Error Code

P1

Malfunction decision
conditions

An abnormal voltage rise or drop is detected by checking the
specified voltage detection circuit.

Supposed causes

● Power supply problems.

● Wiring mistake

● PCB faulty

Trouble shooting:

Check if the power supply is

normal.

Disconnect the unit with

power

supply and

try to restart the

unit

when power supply

gets

normal.

Yes

Check if all the connections

and wires are good?

Correct the connections or

replace the wires.

Yes

Replace the IPM board if it is

separate

with main PCB.

Yes

Replace outdoor main PCB.

Power on and when the unit is in

standby, check if the voltage between P

and N is around DC 310V, 340V, or
380V? For different kinds of units, the
voltage differs. Consult with technical

engineer to get definite value. Then
start up the unit, measure the voltage
between P and N. Is it in 220V~400V?

No

No

No

39

8.2.9 High temperature protection of IPM or compress top diagnosis and solution (P2)

Error Code

P2

Malfunction decision
conditions

If the sampling voltage is not 5V, the LED will display the failure.

Supposed causes

● Installation mistake

● Power supply problems.

● System leakage or block

● PCB faulty

● Connection problems

Trouble shooting:
For DA1821-H2, DA2421-H2,

For DA1221-H2,

Check if the fastening screws on the
PCB and IPM radiator are fixed
tightly.

Tighten the screws and apply silicon grease.

Replace the outdoor control PCB.

No

Yes

Check if the air flow system of indoor and
outdoor units are obstructed?

Clear up the air inlet and outlet or the heat
exchanger of indoor and outdoor units.

Turn off the power supply for 10
minutes. Turn back on. P2?

Is the temperature of

compressor top more than

90˚C?

Is the refrigerant

system normal?

Are all the connections good?
Especially the connection of
OLP(Over Load Protector)
sensor.

Is the resistance between the
two ports of the OLP zero?

Correct the

connection.

Replace the OLP.

Replace the outdoor control PCB.

Replace the outdoor control PCB.

Repair the refrigerant

system.

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

40

8.2.10 Inverter compressor drive error diagnosis and solution (P4)

Error Code

P4

Malfunction decision

conditions

An abnormal inverter compressor drive is detected by a special detection circuit,

including communication signal detection, voltage detection, compressor rotation

speed signal detection

Supposed causes

● Wiring mistake

● IPM malfunction

● Outdoor fan ass’y faulty

● Compressor malfunction

● Outdoor PCB faulty

Trouble shooting:

Check if the wiring between main
PCB and compressor connected
well?

Correct the connection or

replace the wires and

connectors.

Yes

Check if the IPM is installed correctly.

Correct the installation,

tighten the screws and

apply

silicon grease.

Yes

IPM continuity check. Check if the
IPM terminal resistance values are
uniform.

Replace the IPM board or replace the main

PCB if the IPM board and main PCB are

integrated together.

Yes

Check if the outdoor fan runs

properly or the outdoor unit

ventilation is good.

Please refer to the solution of “Fan

Speed Has Been Out Of Control”

malfunction.

Yes

Check if the compressor resistance

values are uniform .

Replace the compressor.

Yes

Replace the outdoor main PCB if the

main PCB and IPM are separate.

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

41

Main parts check

1. Temperature sensor checking

Disconnect the temperature sensor from PCB, measure the resistance value with a tester.

Temperature Sensors. Room temp.(T1)

sensor, Indoor coil temp.(T2) sensor,

Outdoor coil temp.(T3) sensor, Outdoor ambient

temp.(T4) sensor, Compressor discharge temp.(T5)

sensor.

Measure the resistance value of each winding by using the multi-meter.

42

Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K)

˚C

˚F

K Ohm

˚C

˚F

K Ohm

˚C

˚F

K Ohm

˚C

˚F

K Ohm

-20

-4

115.266

20

68

12.6431

60

140

2.35774

100

212

0.62973

-19

-2

108.146

21

70

12.0561

61

142

2.27249

101

214

0.61148

-18 0 101.517

22

72

11.5

62

144

2.19073

102

216

0.59386

-17 1 96.3423

23

73

10.9731

63

145

2.11241

103

217

0.57683

-16 3 89.5865

24

75

10.4736

64

147

2.03732

104

219

0.56038

-15 5 84.219

25

77

10

65

149

1.96532

105

221

0.54448

-14 7 79.311

26

79

9.55074

66

151

1.89627

106

223

0.52912

-13 9 74.536

27

81

9.12445

67

153

1.83003

107

225

0.51426

-12

10

70.1698

28

82

8.71983

68

154

1.76647

108

226

0.49989

-11

12

66.0898

29

84

8.33566

69

156

1.70547

109

228

0.486

-10

14

62.2756

30

86

7.97078

70

158

1.64691

110

230

0.47256

-9

16

58.7079

31

88

7.62411

71

160

1.59068

111

232

0.45957

-8

18

56.3694

32

90

7.29464

72

162

1.53668

112

234

0.44699

-7

19

52.2438

33

91

6.98142

73

163

1.48481

113

235

0.43482

-6

21

49.3161

34

93

6.68355

74

165

1.43498

114

237

0.42304

-5

23

46.5725

35

95

6.40021

75

167

1.38703

115

239

0.41164

-4

25

44

36

97

6.13059

76

169

1.34105

116

241

0.4006

-3

27

41.5878

37

99

5.87359

77

171

1.29078

117

243

0.38991

-2

28

39.8239

38

100

5.62961

78

172

1.25423

118

244

0.37956

-1

30

37.1988

39

102

5.39689

79

174

1.2133

119

246

0.36954

0

32

35.2024

40

104

5.17519

80

176

1.17393

120

248

0.35982

1

34

33.3269

41

106

4.96392

81

178

1.13604

121

250

0.35042

2

36

31.5635

42

108

4.76253

82

180

1.09958

122

252

0.3413

3

37

29.9058

43

109

4.5705

83

181

1.06448

123

253

0.33246

4

39

28.3459

44

111

4.38736

84

183

1.03069

124

255

0.3239

5

41

26.8778

45

113

4.21263

85

185

0.99815

125

257

0.31559

6

43

25.4954

46

115

4.04589

86

187

0.96681

126

259

0.30754

7

45

24.1932

47

117

3.88673

87

189

0.93662

127

261

0.29974

8

46

22.5662

48

118

3.73476

88

190

0.90753

128

262

0.29216

9

48

21.8094

49

120

3.58962

89

192

0.8795

129

264

0.28482

10

50

20.7184

50

122

3.45097

90

194

0.85248

130

266

0.2777

11

52

19.6891

51

124

3.31847

91

196

0.82643

131

268

0.27078

12

54

18.7177

52

126

3.19183

92

198

0.80132

132

270

0.26408

13

55

17.8005

53

127

3.07075

93

199

0.77709

133

271

0.25757

14

57

16.9341

54

129

2.95896

94

201

0.75373

134

273

0.25125

15

59

16.1156

55

131

2.84421

95

203

0.73119

135

275

0.24512

16

61

15.3418

56

133

2.73823

96

205

0.70944

136

277

0.23916

17

63

14.6181

57

135

2.63682

97

207

0.68844

137

279

0.23338

18

64

13.918

58

136

2.53973

98

208

0.66818

138

280

0.22776

19

66

13.2631

59

138

2.44677

99

210

0.64862

139

282

0.22231

43

Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K)

˚C

˚F

K Ohm

˚C

˚F

K Ohm

˚C

˚F

K Ohm

˚C

˚F

K Ohm

-20

-4

542.7

20

68

68.66

60

140

13.59

100

212

3.702

-19

-2

511.9

21

70

65.62

61

142

13.11

101

214

3.595

-18 0 483

22

72

62.73

62

144

12.65

102

216

3.492

-17 1 455.9

23

73

59.98

63

145

12.21

103

217

3.392

-16 3 430.5

24

75

57.37

64

147

11.79

104

219

3.296

-15 5 406.7

25

77

54.89

65

149

11.38

105

221

3.203

-14 7 384.3

26

79

52.53

66

151

10.99

106

223

3.113

-13 9 363.3

27

81

50.28

67

153

10.61

107

225

3.025

-12

10

343.6

28

82

48.14

68

154

10.25

108

226

2.941

-11

12

325.1

29

84

46.11

69

156

9.902

109

228

2.86

-10

14

307.7

30

86

44.17

70

158

9.569

110

230

2.781

-9

16

291.3

31

88

42.33

71

160

9.248

111

232

2.704

-8

18

275.9

32

90

40.57

72

162

8.94

112

234

2.63

-7

19

261.4

33

91

38.89

73

163

8.643

113

235

2.559

-6

21

247.8

34

93

37.3

74

165

8.358

114

237

2.489

-5

23

234.9

35

95

35.78

75

167

8.084

115

239

2.422

-4

25

222.8

36

97

34.32

76

169

7.82

116

241

2.357

-3

27

211.4

37

99

32.94

77

171

7.566

117

243

2.294

-2

28

200.7

38

100

31.62

78

172

7.321

118

244

2.233

-1

30

190.5

39

102

30.36

79

174

7.086

119

246

2.174

0

32

180.9

40

104

29.15

80

176

6.859

120

248

2.117

1

34

171.9

41

106

28

81

178

6.641

121

250

2.061

2

36

163.3

42

108

26.9

82

180

6.43

122

252

2.007

3

37

155.2

43

109

25.86

83

181

6.228

123

253

1.955

4

39

147.6

44

111

24.85

84

183

6.033

124

255

1.905

5

41

140.4

45

113

23.89

85

185

5.844

125

257

1.856

6

43

133.5

46

115

22.89

86

187

5.663

126

259

1.808

7

45

127.1

47

117

22.1

87

189

5.488

127

261

1.762

8

46

121

48

118

21.26

88

190

5.32

128

262

1.717

9

48

115.2

49

120

20.46

89

192

5.157

129

264

1.674

10

50

109.8

50

122

19.69

90

194 5 130

266

1.632

11

52

104.6

51

124

18.96

91

196

4.849

12

54

99.69

52

126

18.26

92

198

4.703

13

55

95.05

53

127

17.58

93

199

4.562

14

57

90.66

54

129

16.94

94

201

4.426

15

59

86.49

55

131

16.32

95

203

4.294

16

61

82.54

56

133

15.73

96

205

4.167

17

63

78.79

57

135

15.16

97

207

4.045

18

64

75.24

58

136

14.62

98

208

3.927

19

66

71.86

59

138

14.09

99

210

3.812

44

2.Compressor checking
Measure the resistance value of each winding by using the tester.

Position

Resistance Value

ASN98D22U

FZ

ASM98D32U

FZ

ASM135D23

UFZ

ATF235D22

UMT

Blue - Red

1.57Ω

(20˚C/68˚F)

2.3Ω

(20˚C /68˚F)

1.75Ω

(20˚C /68˚F)

0.75Ω

(20℃/68˚F)

Blue - Black

Red - Blue