Trane 4MYW6-A User guide

,QVWDOOHU¶V0DQXDO
September 2013 06691$(1
16 SEER Inverter System
4
4MYW6-A
4MXW6-A
4TYK6-A
4TXK6-A

Warnings and Cautions
Warnings and Cautions. Notice that warnings and cautions appear at appropriate intervals
throughout this manual. Warnings are provided to alert installing contractors to potential
hazards that could result in personal injury or death, while cautions are designed to alert
personnel to conditions that could result in equipment damage.
Your personal safety and the proper operation of this machine depend upon the strict
observance of these precautions.
WARNING
This equipment is to be serviced by professionally trained personnel ONLY. Under NO
circumstances should an unqualified person service it. This equipment contains
refrigerant under PRESSURE and operates at HIGH VOLTAGE. Improperly installed,
adjusted or altered equipment by an unqualified person poses safety hazards
including FIRE, ELECTROCUTION, or EXPLOSION, which could result in death or
serious injury.
WARNING
Electrocution and Fire Hazards with Improperly Installed and Grounded
Field Wiring!
Improperly installed and grounded field wiring poses FIRE & ELECTROCUTION
hazards. To avoid these hazards, you MUST follow requirements for field wiring
installation and grounding as described in the National Electrical Codes (NEC) and
your local/state electrical codes. All field wiring MUST be performed by qualified
personnel.
Failure to follow these requirements could result in death or serious injury.
Attention:Warnings and Cautions appear at appropriate sections throughout this
literature. Read these carefully.
WARNING:Indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION:Indicates a potentially hazardous situation which, if not avoided, could
result in minor or moderate injury. It may also be used to alert against unsafe practices.
NOTICE:Indicates a situation that could result in equipment or property-damage only
accidents.
MS-SVN22A-EN
@ 2013Ingersoll Rand all rights reserved

Preface
3
WARNING
R410A Refrigerant under Higher Pressure than R22!
The units described in this manual use R410A refrigerant which operates at 50 to 70%
higher pressures than R-22. Use only R-410A approved service equipment. Refrigerant
cylinders are painted with "pink" color to indicate the type of refrigerant and may
contain a "dip" tube to allow for charging of liquid refrigerant into the system. For
specific handling concerns with R-410A, please contact your
Failure to use R-410A approved service equipment could result in standard equipment
exploding under R-410A higher pressure which could result in death or serious injury.
NOTICE
Use PVE Oil with R-410A Mini-Split Units!
All R-410A mini-splits use a PVE oil (Polyvinyl Ether Oil) that readily absorbs moisture
from the atmosphere. To limit this “hygroscopic” action, the system should remain
sealed whenever possible. If a system has been open to the atmosphere for more than
4 hours, the compressor oil must be replaced. Never break a vacuum with air and
always change the driers when opening the system for component replacement. For
specific handling concerns with PVE oil, contact yo
USE ONLY THE FACTORY RECOMMENDED - DAFNE HERMETIC OIL FV50S - for
servicing these units.
Important!
Environmental Concerns
Scientific research has shown that certain man-made chemicals can affect the earth’s naturally
occurring stratospheric ozone layer when released to the atmosphere. In particular, several of
the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine,
Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon
(HCFCs). Not all refrigerants containing these compounds have the same potential impact to the
Responsible Refrigerant Practices
MS-SVN22A-EN
localsales office.
ur local sales office.
environment. The Compay advocates the responsible handling of all refrigerants, including
industry replacements for CFCs such as HCFCs and HFCs.
The manufacturer believes that responsible refrigerant practices are important to the environment,
our customers, and the air conditioning industry. All technicians who handle refrigerants
must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for
handling, reclaiming, recovering and recycling of certain refrigerants and the equipment
that is used in these service procedures. In addition, some states or municipalities may
have additional requirements that must also be adhered to for responsible management
of refrigerants. Know the applicable laws and follow them.

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5
This is given as a guide to good practices in the installation and operation of a
wall mounted split system models and
Read these operation Instructions completely before installing the unit.
Reception
On arrival, inspect the unit before signing the delivery note. Specify any damage of the unit on
the delivery note, and send a registered letter of protest to the last carrier of the goods within 72
hours of delivery. Notify the same time.
The unit should be totally inspected within 7 days of delivery. If any concealed damage is
discovered, send a registered letter of protest to the carrier within 7 days of delivery and notify
About the Unit
These units are assembled, pressure tested, dehydrated, charged and run tested before shipment.
This manual contains informations related to
Refrigerant
The refrigerant provided by the manufacturer comply with all the requirements for our units.
When using a recycled or reprocessed refrigerant, we recommend its qualities be as good as
those of a new refrigerant. It is necessary to have the refrigerant tested by a qualified laboratory.
Failure to do so could void the warranty.
Important
These instructions do not cover all variations in systems, nor do they provide for every possible
contingency to be met in connection with installation. Should further information be desired or
should particular problems arise which are not covered sufficiently in this manual, the matter
should be referred to your
General Information
4MYW64TYK6
4MYW64TYK6;
and
; 4MXW6 and 4TXK6. However it does not
contain all the service procedures for this unit, as these procedures must be performed by a qualified
service technician, through the maintenance contract with a reputable service company.
MS-SVN22A-EN
4MXW6 and 4TXK6 .
local sales office.
Installation Manual
your supplier at
the supplier.

6ft.
2
Active air lters
Washable plastic lters
One active carbon lter
One catechin lter
Sold Separately

(Sold Separately)

8
Indoor Unit
WARNING
Adequate Support!
Wall structure must be adequate to support the weight of the unit. Failure to ensure
adequate structural support could result in unit falling from its location which could
result in death, serious injury, or equipement or property-only damage.
1.
2. Select a location where it is easy to drain the condensing water and connect to the outdoor
unit;
3.
4. Be sure that the installation of the indoor unit conforms to the installation dimension
diagram;
5. Be sure to leave enough space to allow access for routine maintenance; clearance between
6. Install in a location where the ay from other electric appliances
such as television, audio devices etc.;
7. Select location where air filters can be easily removed
Outdoor unit
WARNING
Adequate Support!
Wall structure must be adequate to support the weight of the unit. Failure to ensure
adequate structural support could result in unit falling from its location which could
result in death, serious injury, or equipement or property-only damage.
1. Select a location from which noise and air discharge by unit will not annoy neighbors.
2. Select a location where there is sufficient ventilation.
3. Make sure the air inlet and outlet are not blocked by any obstacles.
4. Select a location capable of supporting the weight and vibration of the outdoor unit, and
where installation work can be carried out safely.
5. Select a location away from flammable gas or gas leaks.
6. Make sure that the installation of the outdoor unit conforms to the installation dimension
diagram.
NOTICE
Installing the unit in one of the following locations could result in unit malfunction:
• Places where oil (machine oil) is used
• Seaside/places with high level of salt in the air.
• Places with high level of sulfur gas such as areas with hot springs.
• Places where high-frequency waves are generated by radio equipment, welders and medical
equipment.
• Other unusual places where unit operation may be altered.
Installation location
MS-SVN22A-EN
unit is more than 3 feet aw
Avoid locating the indoor unit where the return and/or supply air may be obstructed
Keep the indoor unit far away from heat sources, vapor and flammable gas;
7. Locate the outdoor unit away from any bedroom windows.
the indoor unit and the floor should 66".

Schematic diagram being reference only (outdoor unit is with variation),
please refer to real product for authentic information.
valve cover
Space to the wall
Space to the ceiling
Space to the wall
Space to the wall
Air outlet side
Space to the floor
Above Above
5.9 in. Above 5.9 in. Above
11.8in. Above
19.7 in. Above
19.7 in. Above
11.8 in. Above
78.7in. Above
Above
Space to the obstruction
Air outlet side
Space to the wall
Air inlet side
The dimensions of the space necessary for correct
installation of the appliance including the minimum
permissible distances to adjacent structures
●
5.9 in.
66
in.
118.1 in.
9
MS-SVN22A-EN

10
Indoor Unit Installation
WARNING
Hazardous Service Procedures!
The maintenance and troubleshooting procedures recommended in this section of the
manual could result in exposure to electrical, mechanical or other potential safety
hazards. Always refer to the safety warnings provided throughout this manual
concerning these procedures. When possible, disconnect all electrical power including
remote disconnect and discharge all energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to ensure the power can not be
inadvertently energized. When necessary to work with live electrical components, have
a qualified licensed electrician or other individual who has been trained in handling live
electrical components perform these tasks. Failure to follow all of the recommended
safety warnings provided, could result in death or serious injury.
Mounting Location
1. Always mount the rear panel horizontally.
2. Fix the rear panel on the selected location
3. Be sure that the rear panel has been fixed firmly enough to withstand the weight
thermore, the weight should be evenly shared by each screw.
Drilling a hole in the wall to install the piping
The piping can be connected in six different locations on the unit, as shown on figure below:
1. in the wall at a slight downward angle toward the outdoor side in
such a way that the end of the pipe outside is inside.
2. Insert a sleeve into the hole to prevent the connection piping and wiring from being damaged
when passing through the hole.
Installation
Left downward
Left
Rear Left
Right Downward
Rear Right
Right
MS-SVN22A-EN
140 lbs,
fur
Drill a 2 1/2 inch diameter hole
1/4 inch lower than the
Level
6in 6in

11
NOTICE
When a wall sleeve is not used, it is then necessary to drill a straight hole in the wall. If
the hole is not straight and uniform, this could result in water leaking from
condensation, resulting in property damage.
NOTICE
If a wall sleeve is not mounted in the wall, the wiring between the indoor unit and the
outdoor unit can possibly be damaged resulting in electrical current loss in the ground
wiring.
Installing the water drain pipe
NOTICE
Do not wrench or bend the drain hose and make sure the ends of the drain pipe are not
under water. Failure to do so could result in leakage.
1. To ensure proper water drainage, the drain hose should be placed at a downward slant.
2. The water drain pipe must be insulated throughout the house.
Installing the unit
Note: The piping can be lead out from right, right rear, left, left rear.
1. When routing the piping and wiring from the left or right side of indoor unit, cut off the
tailings from the chassis in necessary.
(1).Cut off the tailings 1 when routing the wiring only;
(2).Cut off the tailings 1 and tailings 2 when routing both the wiring and piping.(or 1,2,3)
Under water
Bent
Wrenched
MS-SVN22A-EN
sleeve

12
2. Take out the piping from body case, wrap the piping electric wire, water pipe with tape and
put them through the piping hole.
3. Hang the mounting slots of the indoor unit on the upper tabs of the rear panel and check if it
is firm enough.
Installing the connection pipe
1. Align the center of the piping flare with the relevant valve.
2. Screw in the flare nut by hand and then tighten the nut with spanner and torque wrench refer
to the following.
Note:
Table 2. Tightening Torque Table
Hex nut Diameter Tightening torque (lbf-inch)
6mm - 1/4" 133-177
9.5mm - 3/8" 274-310
12mm - 1/2" 443-487
16mm - 5/8" 531-575
MS-SVN22A-EN
to avoid leakage,
do not over tighten the joint nut
First, connect the connection pipe to indoor unit, then to outdoor unit; pay attention to the
piping bending, do not damage the connection pipe;

13
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow
proper lockout/tagout procedures to ensure the power can not be inadvertently
energized. Failure to disconnect power before servicing could result in death or serious
injury.
1.
2.
3.
4.
5.
6.
Installing Outdoor Unit
Wiring
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow
proper lockout/tagout procedures to ensure the power can not be inadvertently
energized. Failure to disconnect power before servicing could result in death or serious
injury.
1. Disassemble handle of right side plate or front side plate of outdoor unit.
2. Take off wire clamp, connect and rd to terminal Wiring
3. with wire clamp, for cooling and heating unit, then use the
wire the signal control wire, then connect the corresponding connector.
4. Ensure if wire well.
5. Install handle or front side plate.
Note:
Note:
MS-SVN22A-EN
attach power wiring co block.
Attach the power wiring cord
clamp to attach
has been attached
should match that of the indoor unit.
Open the front panel of the indoor unit by lifting upward.
Unscrew and remove the cover plate.
Pull the power connection cable through the back of the indoor unit.
Firmly attach the power connection cables to the terminal block in the indoor unit, making certain
to observe the proper terminal connections as shown on the unit wiring diagram.
Reattach the cover plate with the proper screws.
The electric wire must be tighten with the wire clip. And for the heat pump unit, the signal control
wire must be connected to the terminal board with the wire clip.
Recommended wire size
Models which power supplied from ODU to IDU (In this IOM are specific to all 60Hz models)
Incorrect wiring may cause system damage or malfunction
After attaching the cable, make certain there is adequate space between the connection
and the strain relief.
Wire type Wire size
Power supply wire AWG12
Wires between IDU and ODU AWG14
Note: Always refer to unit ID tag for additional information on Minimum Circuit Ampacity (MCA)
and Maximum Overload Protection (MOP).

14
WARNING
Hazard of Explosion!
Never use an open flame to detect gas leaks. Explosive conditions may occur. Use a
leak test solution or other approved methods for leak testing. Failure to follow
recommended safe leak test procedures could result in death or serious injury or
equipment or property
WARNING
Hazard of Explosion!
Use only dry nitrogen with a pressure regulator for pressurizing unit. Do not use
acetylene, oxygen or compressed air or mixtures containing them for pressure testing.
Do not use mixtures of a hydrogen containing refrigerant and air above atmospheric
pressure for pressure testing as they may become flammable and could result in an
explosion. Refrigerant, when used as a trace gas should only be mixed with dry
nitrogen for pressurizing units. Failure to follow these recommendations could result in
death or serious injury or equipment or property damage.
After the installation of refrigerant lines to both the outdoor and indoor units are completed, the
flare connections must be checked for leaks. Pressurize through the service valve ports, the indoor
unit and field refrigerant lines with dry nitrogen to psi. Use soap bubbles or other leak-
checking methods to see that all flares are leak-free! If not, release pressure; then repair!
SYSTEM EVACUATION
Note: Since the oudoor unit has a refrigerant charge, the gas and liquid line valves must remain
closed.
1. Upon completion of leak check, evacuate the refrigerant lines and indoor coil before opening
the gas and liquid line valves.
2. Attach appropriate hoses from manifold gauge to gas and liquid line pressure taps.
3. Attach center hose of manifold gauges to vacuum pump.
4. Evacuate until the micron gauge reads no higher than 350 microns.
5. Close off valve to vacuum pump and observe the micron gauge. If gauge pressure rises
above 500 microns in one (1) minute, then evacuation is incomplete or system has a leak.
6. If vacuum gauge does not rise above 500 microns in one (1) minute, the evacuation should be
complete.
7. Blank off vacuum pump and micron gauge, close valves on manifold gauge set.
Note: DO NOT VENT REFRIGERANT INTO THE ATMOSPHERE.
8. The liquid line shut-off valve can now be opened. Remove shut-off-valve cap. Fully insert hex
wrench into the stem and backout counterclockwise open.
Vacuum Pump and Leak Inspection
MS-SVN22A-EN
150
damage.

15
9. The gas valve can now be opened. Open the gas valve by removing the shut-off valve cap
and turning the valve stem 1/4 turn counterclockwise using 1/4” Open End or Adjustable
wrench.
10. The gas valve is now open for refrigerant flow. If refrigerant lines are longer than
frigerant charge upon completion of installation.
Outdoor condensation drainage (Heat pump type only)
When the unit is heating, the condensing water and defrosting water can be drained out reliably
through the drain hose.
Installation:
Figure 1. Vacuum Pump and Leak inspection
MS-SVN22A-EN
kit
twenty five ft
it will be necessary to adjust system re
Install the outdoor drain kit in a hole 1 inch on the base plate, and joint the drain hose to the kit,
so that the wastewater formed in the outdoor unit can be drained out to the proper place.
In applications where the system may be operating in heating mode during ambient conditions
near or below freezing. consider wrapping the drain line with heat tape or equivalent to prevent
the drain line from freezing during defrost operation.

Operating Functions
Operation of remote controller
Temperature parameters
• Room set temperature (T set)
• Room ambient temperature (T amb)
Fundamental functions
After powered on, no matter when the compressor is started, the time interval between two
startups cannot be less than 3 minutes.
COOL mode
The condition and process of cooling
• If T T set, COOL mode will act, the compressor and outdoor fan will
run, and the indoor fan will run at the set speed.
• If T amb is mpressor will stop, the outdoor fan will delay 30
seconds to stop, and the indoor fan will run at the set speed.
• If T set amb < Tset, the unit will keep running in the previous mode.
In this mode, the reversal valve will not be powered on and the temperature setting range is
The unit will adjust the running frequency of the compressor automatically according to the change
of ambient temperature.
Protection function
• Antifreezing protection
Under cooling and drying mode, after the compressor run about 10 mins, when the pipe
temp.of the evaporator is to low, the compressor will stop, the outdoor fan will stop after 30s,
under cooling mode the indoor fan and swing motor will keep running in the original mode,
under drying mode the indoor fan will run at low fan speed, the swing motor will run in the
original mode. When antifreezing protection is eliminated and the compressor has stopped for
3 minutes, the unit will resume running in the original mode.
The period of antifreezing protection
Compressor
Outdoor fan
Indoor fan
3 min
Run Stop
16MS-SVN22A-EN
amb is equal or greater than
equal or less than T set -2 , the co
-2 < T
61 F~86
Tamd
Tset
Tset
3min
Compressor
Outdoor fan
Indoor fan
Start cooling
Original running state
Stop cooling
Set fan speed
Run Stop
-2
R)
R)
R)
R
R)

Overcurrent protection
If total current is high, the compressor will run in limited or dropped frequency. When total current
goes on rising over the stated value, the compressor will stop, the outdoor fan will delay 30 seconds
to stop.
DRY mode
The condition and process of drying
• If T amb > T set, DRY mode will act, the indoor fan, outdoor fan and compressor will run, and
indoor fan will run at low speed.
• If T set he unit will keep running in the original mode.
• If T amb < T set the compressor will stop running, the outdoor fan will delay 30 seconds
to stop and the indoor fan will run at low speed.
In this mode, the reversal valve will not be powered on and the temperature setting range is
The unit will adjust the running frequency of the compressor automatically according to the change
of ambient temperature.
Protection
Protection is the same with that in COOL mode.
HEAT mode
The condition and process of heating
• If T amb HEAT mode will act, the compressor, outdoor fan and 4-
way valve will run simultaneously, the indoor fan will delay at most for 2min to run.
• If T set unit will keep running in the original mode.
• If T amb he compressor will stop, the outdoor fan will delay 30
sec to stop and the indoor fan will blow for 60 sec at the original speed and then stop.
In this mode, the temperature setting ra
The air conditioner will adjust the running frequency of the compressor automatically according
to the change of ambient temperature.
When the unit is turned off in HEAT mode, or switched to other mode from HEAT mode, the four-
way valve will be powered off 2min later after the compressor stops.
Dry mode will act
Running in the original mode
Stop running
Compressor
Outdoor fan
Indoor fan
Run Stop
Tamb
Tset
Tset
Low fan speed
17
MS-SVN22A-EN
61 ~86 .
-2 < T amb < T set t
-2
-2
+2
is equal or less than T set
+2 < T amb < T set +9 , the
> T set +9 , t
nge is 61 ~86 .
R)
R)
R)
R)
R)
R)
R)
R)
R)
R)
R)

The condition and process of defrosting
When frost is detected in the condenser, the system will enter into defrosting state. When
defrosting starts, the compressor and indoor fan will stop, and the outdoor fan and four-way valve
will delay 30 seconds to stop. The compressor will start again af
ter 30s and. When the compressor
has run for 8mins, the compressor will stop.
After 30 seconds the four-way valve opens and after another 60 seconds, the compressor and
outdoor fan resume running. The indoor fan will delay 2 minutes to run at the latest and
temperature on the display panel shows H1.
Under heating mode,when the compressor is stopped by malfunction, the indoor fan will blow at
low fan speed for 60s and then stop.
Protection
• Overcurrent protection
If total current is high, the compressor will run in limited or dropped frequency. When total
current go on rising over the stated value, the compressor will stop, the outdoor fan will delay
30 seconds to stop.
FAN mode
In this mode, the indoor fan will run the fan in High, Med, Low and Auto mode. The compressor,
outdoor fan and four-way valve will stop.
In this mode, the temperature setting ra
The unit will adjust the running frequency of the compressor automatically according to the change
of ambient temperature.
AUTO mode
In this mode, the system selects COOL, HEAT and FAN mode automatically according to the change
of ambient temperature. The protection function is the same with that of COOL/HEAT mode.
The unit will adjust the running frequency of the compressor automatically according to the change
of ambient temperature.
Other control
ON / OFF
Each time the On/Off button of the remote controller is pressed, the On/Off state will switch once.
MODE selection
Press the MODE button on the remote controller to select and display the following modes: AUTO,
COOL, DRY, FAN, and HEAT.
Stop heating
Original running state
Reversal valve
Indoor fan
Outdoor fan
Stop
Start heating
Compressor
Tset
Tset
Tamb 3min
Run
2min 2min
18MS-SVN22A-EN
+9
+2
nge is 61 F~86 F.
R)
R)
ter 30 seconds and when the compressor

TEMP. setting button
Each time TEMP + or TEMP - button is pressed, the set temperature will be increased or decreased
Adjusting UTO mode, this button does not function.
AUTO key
When the UTO key, the unit will run under AUTO mode and the swing motor
starts.
When the unit is running, press AUTO key, the unit will be stopped.
Timer control
The unit is turned on or off according to the timer set by the remote controller.
Sleep control
When the air conditioner is in COOL or DRY mode, after Sleep mode has been set properly, the
preset Tset will be increased by ter the sleep program has run for 1 hour, and Tset will be
increased by another 1ºC af
ter 2 hours. Tset has b in two hours. Then the
unit will run at this set temperature and at the set speed.
When the air conditioner is in HEAT mode, after Sleep mode has been set properly, the preset Tset
will be decreased after the sleep program has run for 1 hour, and Tset will be decreased by
ter 2 hours. otally in two hours. Then the unit will
run at this set temperature and at the set speed.
In AUTO or FAN mode, the setting temp. will not change.
Set temp.Tset
1 h 2 h Above 2h
Tset
Tset
Tset
19
MS-SVN22A-EN
by 2 .
range is 61 ~86 . In A
+2 af
een increased by +4 total
increased by another +2 af
+2
+4
1 h 2 h Above 2h
Tset
Tset
TsetSet temp.Tset
-2
-4
by +2
another +2 af Tset has been increased by +4 t
R)
R)
R)
R)
R)
R)
R)
R)
R)
R)
R)
R)
R)
Manual switch
unit stops, press A

Indoor fan control
Use the remote controller to set the indoor fan running at HIGH, MED or LOW speed. At this time
the fan will run at high, medium or low speed. It can also be set to AUTO and the indoor fan will
select fan speed(HIGH, MED or LOW) automatically according to ambient temperature.
There are at least 3 mins and 30s delay for fan speed shift.
Power supply for outdoor unit
The power supply for outdoor unit is turned on in AUTO, COOL, HEAT and DRY mode under turn-
on state.
The power supply for outdoor unit will delay 3 minutes to turn off under turn-off state or in the FAN
mode under turn-on state.
Swing control
Use the SWING button of the wireless remote control to control SWING On and Off. Swing will only
act when indoor fan is running. After power on, the swing motor turns back to 0 position and closes
the air outlet vent; if it does not preset swing, after the unit is turned on, it will turn to the max. air
outlet D1 position; then turn back to L position under COOL mode.Under HEAT mode, the guide
louver stays at D1; when in swinging state, it will swing between L1 and D1 position. When the unit
is turned off, it will turn back to 0 position.
Buzzer control
When the unit is power on or receives remote control signal or the auto key be pressed, the buzzer
will give out a beep.
Power-off memory function
Contents of memory: Mode; Swing; Set fan speed, Set temperature, Timing etc.
Under turn-on state, when power off and power on, the power supply for outdoor unit will be turn
on after 3 mins.
Under turn-off state, when power off and power on, the power supply for outdoor unit will be turn
on immediately.
Delay Protection of Compressor
Under COOL; DRY; HEAT mode, before each time the compressor starts, there will be 3 mins delay.
Common protection function in each mode
Overload protection
Ttube: at cooling,it detects the temp. of outdoor heat exchanger,at heating,it detects the temp. of
indoor heat exchanger.
When Ttube is detected high, the compressor will run in limited frequency. When Ttube goes on
rising over the stated value, the compressor will stop; under AUTO HEAT or HEAT mode, indoor
fan will blow 60s at low fan speed and then stop; under other mode, the indoor fan will run at set
speed.
20 MS-SVN22A-EN