Mitsubishi Electric TRANE TPKFYP006BM142B Operating manual

TECHNICAL & SERVICE MANUAL
Notes:
•This manual describes only
service data of the indoor
units.
R410A
Indoor unit
[Model Name]
TPKFYP006BM142B
April 2019
No. OCHT516
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
INDOOR UNIT
Model name
indication
CONTENTS
1. SAFETY PRECAUTION.......................... 2
2. PARTS NAMES AND FUNCTIONS........ 3
3. SPECIFICATION ................................... 10
4. OUTLINES AND DIMENSIONS............ 13
5. WIRING DIAGRAM............................... 14
6. REFRIGERANT SYSTEM DIAGRAM........15
7. MICROPROCESSOR CONTROL......... 16
8. TROUBLESHOOTING .......................... 22
9. DISASSEMBLY PROCEDURE ............. 29
PARTS CATALOG (OCBT516)

32 3
OCHT516
CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Charge refrigerant from liquid phase of gas
cylinder.
If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.
Do not use refrigerant other than R410A.
If other refrigerant (R22, etc.) is used, chlorine in refrige-
rant can cause deterioration of refrigerant oil, etc.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
Use the following tools specifically designed for
use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant.
Handle tools with care.
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
Do not use a charging cylinder.
If a charging cylinder is used, the composition of refrigera-
nt will change and the efficiency will be lowered.
Flare tool
Electronic refrigerant
charging scale
Vacuum pump adaptor
Size adjustment gauge
Gauge manifold
Torque wrench
Gas leak detector
Charge hose
Tools for R410A
If dirt, dust or moisture enters into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com-
pressor.
If large amount of mineral oil enters, that can cause deterio-
ration of refrigerant oil, etc.
Do not use the existing refrigerant piping.
The old refrigerant and lubricant in the existing piping
contains a large amount of chlorine which may cause the
lubricant deterioration of the new unit.
Use “low residual oil piping”.
If there is a large amount of residual oil (hydraulic oil, etc.)
inside the piping and joints, deterioration of the lubricant
will result.
Store the piping indoors, and both ends of the
piping sealed until just before brazing.
(Leave elbow joints, etc. in their packaging.)
The refrigerant oil applied to flare and flange
connections must be ester oil, ether oil or
alkylbenzene oil in a small amount.
Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the
unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the
spec labels provided with our products.
We will not be held responsible for mechanical failure,
system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Use the specified refrigerant only.
SAFETY PRECAUTION
1

3
OCHT516 3
2-1. Indoor unit
Filter
Grille
Louver
Air outlet
Air intake
Vane
2PARTS NAMES AND FUNCTIONS
2-2. Wired Remote Controller <TAR-40MAA> <TAC-YT53CRAU>
: Supported : Unsupported
Function TAR-40MAA TAC-YT53CRAU
Slim CITY MULTI
Body Product size H × W × D (mm) 120 × 120 × 14.5 120 × 70 × 14.5
LCD Full Dot LCD Partial Dot LCD
Backlight
Energy-saving Energy saving operation schedule
Automatic return to the preset temperature
Restriction Setting the temperature range restriction
Function* Operation lock function
Weekly timer
ON/OFF timer
High Power
Manual vane angle
Wired remote controller function
The functions which can be used are restricted according to each model.
*Some functions may not be available depending on model types.

4 55
OCHT516
2-3. Wired Remote Controller <TAR-40MAA>
Function buttons
MENU
ON
OFF
RETURN SELECT
HOLD
When the backlight is off, pressing any button turns the backlight on
and does not perform its function. (except for the [ON/OFF] button)
The functions of the function buttons change depending on the
screen.
Refer to the button function guide that appears at the bottom of
the LCD for the functions they serve on a given screen.
When the system is centrally controlled, the button function
guide that corresponds to the locked button will not appear.
Press to turn ON/OFF the indoor unit.
This lamp lights up in green while the unit is in operation. It blinks
while the remote controller is starting up or when there is an error.
1[ON/OFF] button 6ON/OFF lamp
Press to save the setting.
When the Main menu is displayed, pressing this button will
enable/disable the HOLD function.
Main display: Press to change the operation mode.
Menu screen: The button function varies with the screen.
2 [SELECT/HOLD] button
7 Function button [F1]
Press to return to the previous screen. Main display: Press to decrease temperature.
Main menu: Press to move the cursor left.
Menu screen: The button function varies with the screen.
3[RETURN] button 8Function button [F2]
4[MENU] button
9Function button [F3]
Press to bring up the Main menu.
Main display: Press to increase temperature.
Main menu: Press to move the cursor right.
Menu screen: The button function varies with the screen.
Operation settings will appear.
When the backlight is off, pressing any button turns the
backlight on and it will stay lit for a certain period of time de-
pending on the screen.
Main display: Press to change the fan speed.
Menu screen: The button function varies with the screen.
5Backlit LCD
0Function button [F4]
83
83
Fri
Room
Set temp.
Mode Temp. Fan
Cool Auto
Main Main menu
Energy saving
Main display:
Cursor
Operation
Vane·Louver·Vent. (Lossnay)
High power
Comfort
Main menuMain display
Menu screen
7 8 9 0
7 8 9 0
7 8 9 0
Function guide
Controller interface

55
OCHT516
The main display can be displayed in two different modes: “Full” and “Basic”. The initial setting is “Full”. To switch to the “Basic”
mode, change the setting on the Main display setting. (Refer to operation manual included with remote controller.)
<Full mode> <Basic mode>
All icons are displayed for explanation.
Most settings (except ON/OFF, mode, fan speed, temperature) can be made from the Main menu.
1Operation mode
2Preset temperature
3Clock
4Fan speed
Functions of the corresponding buttons appear here.
5Button function guide
Appears when the ON/OFF operation is centrally controlled.
Appears when the operation mode is centrally controlled.
Appears when the preset temperature is centrally controlled.
Appears when the lter reset function is centrally controlled.
Indicates when lter needs maintenance.
1Room temperature
Appears when the buttons are locked.
Appears when the Weekly timer is enabled.
Appears while the units are operated in the energy saving
mode. (Will not appear on some models of indoor units)
Appears when the built-in thermistor on the remote control-
ler is activated to monitor the room temperature (1).
appears when the thermistor on the indoor unit is acti-
vated to monitor the room temperature.
Appears when an energy saving operation is performed us-
ing a “3D i-see Sensor” function.
Indicates the louver setting.
Indicates the ventilation setting.
Appears when the preset temperature range is restricted.
Indicates the vane setting.
6
7
8
9
0
2
4
5
7
8
9
)
!
Fri
Mode Temp. Fan
Room
Cool Set temp. Auto
83
83
1
2
3
4
5
6
78
90
1
2 34 5 6 7 8
9
)
@
!
#
$
Display
Appears when the On/Off timer or Auto-off timer function is enabled.
3
appears when the timer is disabled by the centralized control system.
appears when the HOLD function is enable.
6
Appears while the outdoor units are operated in the silent mode.
@
Appears for a certain period of time when a centrally-con-
trolled item is operated.
#Centrally controlled
An check code appears during the preliminary error.
$Preliminary error display
Fri
Cool
Mode Temp. Fan
Set temp. Auto
$
83
5
4
3
2
1
#

6 77
OCHT516
Not all functions are available on all models of indoor units.
Energy saving
Main menu Press the MENU button.
Move the cursor to the desired item with the F1 and F2 buttons, and press the SELECT button.
Operation
Initial setting menu
Manual vane angle
ON/OFF timer
Auto return
Clock
Main/Sub
Temp. range
Auto-OFF timer
Schedule
Daylight saving time
Clock
Administrator password
Operation locked
3D i-see Sensor
High power
Vane · Louver · Vent. (Lossnay)
Comfort
Timer
Energy saving
Basic setting
Display setting
Operation setting
Restriction
Weekly timer
OU silent mode
Black and white inversion setting
Timer menu
Main display
Display details
Contrast • Brightness
Language selection
Auto mode
Setback mode
Continue to the next page.

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OCHT516
Maintenance menu
Service menu
Drain pump test run
Serial No. input
Lossnay
Diagnosis
Initialize remote controller
Remote controller information
Initialize maintenance info.
Test run
Model name input
Function setting
Error history
Maintenance password
Dealer information input
Error information
Test run menu
Maintenance information
Filter information
Cleaning
Settings menu
Check menu
Other menu
Auto descending panel
Descending operation
Self check
Descending adjustment
Remote controller check
Continue from the previous page.
Not all functions are available on all models of indoor units.

8 99
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Main menu list
Continue to the next page.
*1Clock setting is required.
*233.8°F (1°C) increments.
Main
menu Setting and display items Setting details
Operation Vane · Louver · Vent.
(Lossnay)
Use to set the vane angle.
• Select a desired vane setting from 5 different settings.
Use to turn ON/OFF the louver.
• Select a desired setting from "ON" and "OFF."
Use to set the amount of ventilation.
• Select a desired setting from "Off," "Low," and "High."
High power Use to reach the comfortable room temperature quickly.
• Units can be operated in the High-power mode for up to 30 minutes.
Comfort Manual
vane angle
Use to x each vane angle.
3D i-see Sensor Use to set the following functions for 3D i-see Sensor.
• Air distribution • Energy saving option • Seasonal airow
Timer Timer ON/OFF timer *1Use to set the operation ON/OFF times.
• Time can be set in 5-minute increments.
Auto-Off
timer
Use to set the Auto-Off time.
• Time can be set to a value from 30 to 240 in 10-minute increments.
Weekly timer *1, *2Use to set the weekly operation ON/OFF times.
• Up to 8 operation patterns can be set for each day.
(Not valid when the ON/OFF timer is enabled.)
OU silent mode *1Use to set the time periods in which priority is given to quiet operation of
outdoor units over temperature control. Set the Start/Stop times for each day
of the week.
•Select the desired silent level from "Normal," "Middle," and "Quiet."
Energy
saving
Restriction Temp. range *2Use to restrict the preset temperature range.
• Different temperature ranges can be set for different operation modes.
Operation lock Use to lock selected functions.
• The locked functions cannot be operated.
Energy
saving
Auto return *2Use to get the units to operate at the preset temperature after performing
energy saving operation for a specied time period.
• Time can be set to a value from 30 and 120 in 10-minute increments.
(This function will not be valid when the preset temperature ranges are restricted.)
Schedule *1Set the start/stop times to operate the units in the energy saving mode for
each day of the week, and set the energy saving rate.
• Up to 4 energy saving operation patterns can be set for each day.
• Time can be set in 5-minute increments.
• Energy saving rate can be set to a value from 0% or 50 to 90% in 10% increments.

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Main
menu Setting and display items Setting details
Initial
setting
Basic
setting
Main/Sub When connecting 2 remote controllers, one of them needs to be designated as
a sub controller.
Clock Use to set the current time.
Daylight
saving time
Set the daylight saving time.
Administrator
password
The administrator password is required to make the settings for the following
items.
• Timer setting • Energy saving setting • Weekly timer setting
• Restriction setting • Outdoor unit silent mode setting • Night set back
Display
setting
Main display Use to switch between "Full" and "Basic" modes for the Main display.
• The initial setting is "Full."
Black and white
inversion setting
Use to invert the colors of the display, turning white background to black and
black characters to white.
Display details Make the settings for the remote controller related items as necessary.
Clock: The initial settings are "Yes" and "24h" format.
Temperature: Set either Celsius (°C) or Fahrenheit (°F).
Room temp. : Set Show or Hide.
Auto mode: Set the Auto mode display or Only Auto display.
Contrast •
Brightness
Use to adjust screen contrast and brightness.
Language
selection
Use to select the desired language.
Operation
setting
Auto mode Whether or not to use the Auto mode can be selected by using the button.
This setting is valid only when indoor units with the Auto mode function are
connected.
Setback mode Whether or not to use the Setback mode can be selected by using the button.
This setting is valid only when indoor units with the Setback mode function
are connected.
Mainte-
nance
Error information Use to check error information when an error occurs.
• Check code, error source, refrigerant address, unit model, manufacturing number,
contact information (dealer's phone number) can be displayed.
(The unit model, manufacturing number, and contact information need to be
registered in advance to be displayed.)
Filter information Use to check the lter status.
• The lter sign can be reset.
Cleaning Auto
descending
panel
Use to lift and lower the auto descending panel (Optional parts).
Service Test run Select "Test run" from the Service menu to bring up the Test run menu.
• Test run • Drain pump test run
Input maintenance Select "Input maintenance Info." from the Service menu to bring up the
Maintenance information screen.
The following settings can be made from the Maintenance Information screen.
• Model name input • Serial No. input • Dealer information input • Initialize
maintenance info.
Settings Function setting Make the settings for the indoor unit functions via the remote controller as
necessary.
LOSSNAY setting This setting is required only when the operation of CITY MULTI units is
interlocked with LOSSNAY units.
Check
Error history
Display the error history and execute "delete error history".
Diagnosis Self check: Error history of each unit can be checked via the remote controller.
Remote controller check: When the remote controller does not work properly, use
the remote controller checking function to troubleshoot the problem.
Other Maintenance
password
Use to change the maintenance password.
Initialize remote
controller
Use to initialize the remote controller to the factory shipment status.
remote controller
information
Use to display the remote controller model name, software version, and serial
number.

1110 11
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3SPECIFICATION
3-1. Specications
Service Ref. TPKFYP006BM142B
Power source 1-phase 208/230V 60Hz
Cooling capacity *1 kW 1.8
(Nominal) *1 Btu/h 6,000
Power input kW 0.03
Current input A 0.15
Heating capacity *2 kW 2.0
(Nominal) *2 Btu/h 6,700
Power input kW 0.03
Current input A 0.15
External nish Plastic, MUNSELL (1.0Y 9.2/0.2)
External dimension
H × W × D
in 11-5/8 × 32-1/8 × 8-7/8
mm 295 × 815 × 225
Net weight lb (kg) 22 (10)
Heat exchanger Cross Fin (Aluminum n and copper tube)
FAN Type × Quantity Line ow fan × 1
External static press. Pa 0
mmH2O 0
Motor type 1-phase induction motor
Motor output kW 0.008
Driving mechanism Direct-driven by motor
Airow rate
(Low-Mid2-Mid1-High)
m³/min 4.9 - 5.2 - 5.6 - 5.9
L/s 82 - 87 - 93 - 98
cfm 170 - 180 - 200 - 210
Noise level (Low-Mid2-Mid1-High)
(measured in anechoic room) dB <A> 32 - 33 - 35 -36
Insulation material Polyethylene sheet
Air lter PP honeycomb
Protection device Fuse
Refrigerant control device LEV
Connectable outdoor unit R410A CITY MULTI
Diameter of
refrigerant pipe
Liquid (R410A) in (mm) 1/4 (6.35) Flare
Gas (R410A) in (mm) 1/2 (12.7) Flare
Field drain pipe size in (mm) I.D. 5/8 (16)
Standard
attachment
Document Installation Manual, Installation Book
Accessory MA remote controller cable
Optional parts External heater adapter PAC-SA88HA-E
Remarks Installation Details on foundation work, insulation work, electrical wiring, power source switch, and
other items shall be referred to the Installation Manual.
Note: *1. Nominal cooling conditions *2. Nominal heating conditions Unit converter
Indoor: 80°F D.B./67°F W.B. (26.7°C D.B./19.4°C W.B.) 70°F D.B(21.1°C D.B.) kcal/h = kW × 860
Btu/h = KW × 3,412
cfm = m3/min × 35.31
Ib = kg/0.4536
*Above specication data is subject
to rounding variation.
Outdoor: 95°F D.B. (35°C D.B.) 47°F D.B./43°F D.B. (8.3°C D.B./6.1°C D.B.)
Pipe length: 25ft (7.6 m) 25ft (7.6 m)
Level difference: 0 ft (0 m) 0 ft (0 m)
* Due to continuing improvement, above specication may be subject to change without notice.

11
OCHT516 11
3-2. Electrical parts specications
Service Ref.
Parts name Symbol TPKFYP006BM142B
Room temperature
detection thermistor TH21 Resistance 30°F/15.8kΩ, 50°F/9.6kΩ, 70°F/6.0kΩ, 80°F/4.8kΩ, 90°F/3.9kΩ, 100°F/3.2kΩ
Pipe temperature
detection thermistor/
liquid
TH22 Resistance 30°F/15.8kΩ, 50°F/9.6kΩ, 70°F/6.0kΩ, 80°F/4.8kΩ, 90°F/3.9kΩ, 100°F/3.2kΩ
Pipe temperature
detection thermistor/
gas
TH23 Resistance 30°F/15.8kΩ, 50°F/9.6kΩ, 70°F/6.0kΩ, 80°F/4.8kΩ, 90°F/3.9kΩ, 100°F/3.2kΩ
Fuse (Indoor
controller board) FUSE 250 V 6 A
Fan motor
(with thermal fuse) MF 4-pole OUTPUT 8 W
PS4N8-KB
Fan motor capacitor C1 1.2µF × 440 V
Vane motor
(with limit switch) MV MSFBC20 DC 12 V
Linear expansion
valve LEV DC12V Stepping motor drive
Port ø3.2 (0~2000pulse)
Power supply terminal
block TB2 (L1, L2, GR) 250 V 20 A
Transmission terminal
block TB5 (M1, M2, S) 250 V 20 A
MA-remote controller
terminal block TB15 (1, 2) 250 V 10 A

1312 13
OCHT516
* Measured in anechoic room.
TPKFYP006BM142B
Sound level dB (A)
Sound level at anechoic room: Low-Middle2-Middle1-High
Service Ref.
32-33-35-36
3.3 ft (1m)
Measurement location
Wall
Unit
3.3 ft
(1m)
3-3. Sound levels
3-4. NC curve
TPKFYP006BM142B
External static pressure: 0Pa
Power source: 208,230V, 60Hz
OCTAVE BAND PRESSURE LEVEL (dB) 0dB = 20
µPa
OCTAVE BAND CENTER FREQUENCIES(Hz)
Approximate minimum
audible limit on
continuous noise
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
63 125 250 500 1k 2k 4k 8k
NC60
NC50
NC40
NC30
NC20
High speed
Low speed

13
OCHT516 13
OUTLINES AND DIMENSIONS
4
5°
3°
45°
R5/16(R8)
R15/32(R12)
R5/16(R8)
R19/32(R15)
R19/32(R15)
R19/32(R15)
R5/16(R8)
(Direction)
Air outlet
(Direction)
(Direction)
Air intake
Air intake
Air intake
Air intake
Liquid pipe
Gas pipe
Air intake
Air intake
Air intake
Air outlet
Air outlet
installation plate
Address board
Connection No.
on the occasion of setting.
Remove the screw with driver
With PL cover.
*3 Address board is protected
Mode selection
Address setting digit
Address board
Terminal block Detailed
Detailed
Address board
Power supply
Transmission
Power supply(208-230V)
Connection with MA-remote controller refers to Note.3
There is no MA-remote controller terminal block.
MA-remote controller DC8.7-13V)
Transmission(DC 24-30V)
M2M1
L1 GR L2
Terminal block
Emergency operation
Emergency operation
DEFROST/STAND BY lamp
Operation lamp
Receiver
(Knockout hole)
Detailed figure dwg (ABC)
right piping
Knockout hole of
remocon wiring
Knockout hole of
remocon wiring
Knockout hole for
under piping
Knockout hole for
left piping
Knockout hole for
2-7/8(74.6)
30-13/16(783)
17/32(14) 3-15/16(100.6)
20-25/32(520)
17-23/32(450)
25-3/16(640) Drain pipe effective length
4-9/16(116)
4-11/32(110)
8-55/64(225)
27-3/8(695)
25-3/16(640)
2-3/8(60)
11-39/64(295)
1/8(3)
4-3/16(106.7)
4-1/2(115)
32-3/32(815)
25-3/16(640)
1/4(7)
1-7/16(37.8)
13/32(10)
1-31/32(50)
5/8(16) 3/32(2.5)
1-25/32(45) 3-19/32(91.5)
2-1/8(54)
31/32(24.4)
1-25/32(45)
13/32(10)
13/32(10)
1-11/32(34)
5/8(16)
3/32(2.5)
1-31/32(50)
5/32(4)
piping
Refrigerant
Gas pipe
Liquid pipe
Drain pipe
1/2F（[12.7）
1/4F（[6.35）
[2-9/16([16) I.D
Installation space
connect MA-remote controller cable (anaccssory) to the connector.
Note.3 In case of connecting MA-remote controller, please
Note.2 Extension piping side.
Note.1 Use M10 or W3/8 screw for installation plate.
left and left back piping.
60mm or more for
Min1-31/32(50)
Min3-35/64(90)
Min3-15/16(100)
Min25/32(20)
Min55/64(22)
3/16×1-3/8(4.5×35) 4 holes
8-[5/32([4.3) holes
Installation plate
Piping hole[2-9/16([65)
87-[3/16([5.1)holes
4-[11/32([9)holes
12-[1/8([2.8)holes
3/16×1-15/32(4.5×37) 4 holes
3/16×1-9/16(4.5×40) 4 holes
Installation plate balance point hole
Knock of hole
13/32(10)
13/32(10)
16-1/32(407.5)
11-23/32(298) 10-1/4(260) 8-27/32(225)
7-15/32(190)
6-3/32(155) 4-23/32(120) 3-11/32(85) 1-3/16(30)
16-1/32(407.5)
12-29/32(328) 11-5/8(295) 10-1/4(260) 8-27/32(225) 7-15/32(190)
6-3/32(155)
4-23/32(120) 3-11/32(85) 1-3/16(30)
5-1/4(133)
2-27/32(72.5)
3-11/32(85)
1-7/8(47.5)
2-3/8(60)
7/8(22.5)
0
4-13/16(122.5)
4-1/32(102.5)
19/32(15)
12-29/32(328)
6-5/8(168)
4-7/16(113)
3-7/16(87)
5-5/16(135)
4-11/32(110)
1-3/8(35)
13/32(10)
4-7/8(124)
3-17/32(90)
6-1/4(159)
2-9/16(65)
1-9/16(40)
5-1/32(128)
11-23/32(298)
9-1/4(235)
8-1/16(205)
6-7/8(175)
6-11/16(170)
0
1-3/4(45)
4-29/32(125)
2-3/32(53)
1-3/32(27.5)
0
7-3/32(180)
6-1/4(159)
0
3-27/32(97.5)
8-1/16(205)
6-11/16(170)
9-1/4(235)
6-7/8(175)
1-23/32(44)
1-31/32(50)
Details of installation plate
TPKFYP006BM142B Unit: inch (mm)

14 15
OCHT516
WIRING DIAGRAM5
TPKFYP006BM142B

15
OCHT516
TPKFYP006BM142B
6REFRIGERANT SYSTEM DIAGRAM
Strainer
(#100mesh)
Strainer
(#100mesh)
Strainer
(#100mesh)
Heat exchanger
Room temperature detection thermistor
TH21
Pipe temperature detection thermistor/gas
TH23
Pipe temperature detection
thermistor/liquid
TH22
Gas pipe
Liquid pipe
Flare
Linear expansion
valve
Refrigerant flow in cooling
Refrigerant flow in heating
Unit: inch (mm)
Service ref.
Item TPKFYP006BM142B
Gas pipe ø1/2 (12.7)
Liquid pipe ø1/4 (6.35)

1716 17
OCHT516
7MICROPROCESSOR CONTROL
INDOOR UNIT CONTROL
7-1. COOL OPERATION
Control Mode Control Details Remarks
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function
(Function to prevent restarting for 3 minutes)
• Room temperature ]Set temperature + 2°F ···Thermo-ON
• Room temperature [Set temperature ···Thermo-OFF
• The ON/OFF commands
by the indoor unit
thermostatic control
are not an ON/OFF
commands to the
compressor but an
open/close commands
to the linear expansion
valve. (The compressor
stops only when the
thermostatic control
for all the indoor units
connected to the same
outdoor unit turns OFF.)
1-2. Anti-freeze control
■Condition to detect
When the pipe temperature detection thermistor/liquid (TH22) detects 32°F or less in 16 minutes
from compressor startup, the anti-freeze control initiates, and the unit enters to the thermo-OFF.
■ Condition to release
The timer which prevents reactivating is set for 3 minutes, and anti-freeze control is
cancelled when any one of the following conditions has been satised:
1Pipe temperature detection thermistor/liquid (TH22) reaches 50°F or above.
2The condition of thermo-OFF has been completed by the thermostat.
3The operation has changed to a mode other than COOL.
2. Fan By the remote controller setting (switch of 4 speeds)
Type Fan speed notch
4 speeds type
3. Vane
(up/down vane
position change)
(1) The initial vane setting for COOL mode will be the horizontal position.
(2) Vane position:
Horizontal →Downward A →Downward B →Downward C
(3) Restriction of the downward vane setting
If the vane position is set to Downward A/B/C in [Mid1] or [Low], the vane will return to the
horizontal position after 1 hour has passed.
•"ONLY 1 Hr" appears on
the wired remote controller.
<How to operate>
1 Press POWER ON/OFF button.
2 Press the operation MODE button to display COOL.
3 Press the TEMP. button to set the set temperature.
NOTE: The set temperature changes 1°F when the or button
is pressed one time. Cooling 67 to 87°F
<How to operate>
1 Press ON/OFF button.
2 Press [F1] button to display COOL.
3 Press [F2] [F3] button to set the set temperature.
NOTE: The settable temperature range varies with the model of
outdoor units and remote controller.
MENU ON
OFF
RETURN SELECT
HOLD
.

17
OCHT516 17
7-2. DRY OPERATION
Control Mode Control Details
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function
(Function to prevent restarting for 3 minutes)
Setting the Dry thermo by the thermostat signal and the room temperature (TH21).
Dry thermo-ON Room temperature ]Set temperature + 2°F
Dry thermo-OFF Room temperature [Set temperature
Room temperature
3 minutes passed since
starting operation
Dry thermo-
ON time
(min)
Dry thermo-
OFF time
(min)
Thermostat signal
Room temperature (T1)
Over 64°F ON
T1 ]83°F 9 3
83°F > T1 ]79°F 7 3
79°F > T1 ]75°F 5 3
75°F > T1 3 3
OFF Unconditional 3 10
Below 64°F Dry thermo OFF
1-2. Anti-freeze control
No control function
2. Fan Indoor fan operation controlled depends on the compressor conditions.
Dry thermo Fan speed notch
ON [Low]
OFF Excluding the following Stop
Room temp. < 64°F [Low]
Note: Fan speed change is not allowed during DRY operation.
3. Vane
(up/down vane
position change)
Settings are the same in DRY operation as they are in COOL operation.
<How to operate>
1 Press POWER ON/OFF button.
2 Press the operation MODE button to display DRY.
3 Press the TEMP. button to set the set temperature.
NOTE: The set temperature changes 1°F when the or
button is pressed one time. Dry 67 to 87°F
<How to operate>
1 Press ON/OFF button.
2 Press [F1] button to display DRY.
3 Press [F2] [F3] button to set the set temperature.
MENU ON
OFF
RETURN SELECT
HOLD
.

18 19
OCHT516
7-3. FAN OPERATION
Control Mode Control Details
1. Fan Set by remote controller.
Type Fan speed notch
4 speeds type
2. Vane
(up/down vane
position change)
Same as the control performed during COOL operation, but with no restriction on the vane's downward blow setting
MENU ON
OFF
RETURN SELECT
HOLD
.
<How to operate>
1 Press ON/OFF button.
2 Press [F1] button to display FAN.
<How to operate>
1 Press POWER ON/OFF button.
2 Press the operation MODE button to display FAN.

19
OCHT516
7-4. HEAT OPERATION
Control Mode Control Details Remarks
1. Temperature
adjustment
function
1-1. Determining temperature adjustment function (Function to prevent restarting for 3 minutes)
• Room temperature [ Set temperature −2°F ···Thermo-ON
• Room temperature ]Set temperature ···Thermo-OFF
2. Fan By the remote controller setting (switch of 4 speeds)
Type Fan speed notch
4 speeds type
Give priority to under-mentioned controlled mode:
2-1. Hot adjust mode
2-2. Residual heat exclusion mode
2-3. Thermo-OFF mode (When the compressor off by the temperature adjustment function)
2-4. Cool air prevention mode (Defrosting mode)
2-1. Hot adjust mode
The fan controller becomes the hot adjust mode for the following conditions:
1When starting HEAT operation
2When the temperature adjustment function changes from OFF to ON
3When HEAT defrosting operation is released
A CB
[Extra Low]
[Low]
Set fan speed by the remote controller
Hot adjust mode *1
A: Hot adjust mode starts.
B: 5 minutes have passed since the condition A or the indoor liquid pipe temperature reached 95°F or more.
C: 2 minutes have passed since the condition B. (Terminating the hot adjust mode)
*1"STAND BY" will be
displayed during the hot
adjust mode.
Continue to the next page
<How to operate>
1 Press POWER ON/OFF button.
2 Press the operation MODE button to display HEAT.
3 Press the TEMP. button to set the set temperature.
NOTE: The set temperature changes 1°F when the or
button is pressed one time. Heating 63 to 83°F
<How to operate>
1 Press ON/OFF button.
2 Press [F1] button to display HEAT.
3 Press [F2] [F3] button to set the set temperature.
NOTE: The settable temperature range varies with the model of
outdoor units and remote controller.
MENU ON
OFF
RETURN SELECT
HOLD
.

20 21
OCHT516
Control Mode Control Details Remarks
2-2. Residual heat exclusion mode
When the condition changes the auxiliary heater ON to OFF (thermostat or operation
stop, etc.), the indoor fan operates in [Low] mode for 1 minute.
• This control operates
the same for the model
without auxiliary heater.
2-3. Thermo-OFF mode
When the temperature adjustment function changes to OFF, the indoor fan operates in
[Extra low].
2-4. Heat defrosting mode
The indoor fan stops.
3. Vane control
(Up/down vane
position change)
(1) Initial setting: OFF → HEAT···[last setting]
When changing the mode from exception of HEAT to HEAT operation
···[Downward C]
(2) Vane position:
Horizontal →Downward A →Downward B →Downward C
(3) Restriction of vane position
1 The vane is horizontally xed for the following modes:
(The control by the remote controller is temporally invalidated and control by the unit.)
• Thermo-OFF
• Hot adjust [Extra low] mode
• Heat defrost mode