Klimaire KTHN007E3C211-B User manual

SERVICE MANUAL
KTHN SERIES
7,000-15,000 BTU/H
Cooling with Electric Heat
KTHN007E3C211-B
KTHN009E3C211-B
KTHN012E3C211-B
KTHN015E5C210-B
Heat Pump with Electric Heat
KTHN007E3H211-B
KTHN009E3H211-B
KTHN012E3H211-B
KTHN015E5H210-B

CONTENTS
1. Precaution
1.1 Safety Precaution
1.2 Warning
2. Functions and control panel.
3. Dimension
4. Refrigerant Cycle Diagram
5. Wiring Diagram
6. Electronic function
6.1 Terms and definitions
6.2 Electric Control working environment
6.3 Protection function
6.4 Operation of fan motor
6.5 Operation of compressor
6.6 Dip switches and Jumper selection
6.7 Functions for Front desk switch panel and Wire Controller
7. Unit components
8. Installation details
8.1 How to install the unit
8.2 Care and cleaning
9 Operation characteristics
9.1 Cooling operation
9.2 Heating operation
9.3 Characteristic of temperature sensor
10 Power connection options
11 Troubleshooting
P1
P1-4
P1-4
P5-6
P7
P8
P9
P10-16
P10
P10
P10
P10-11
P12
P13-14
P15
P16
P17-20
P17-18
P19-20
P21-22
P21
P21
P22
P23-24
P25

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 service unit, be sure to read this service manual at first.
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 of electric shock.
● Always install a dedicated circuit and breaker.
Improper wiring or installation may cause fore 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 cab
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.
● Be 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.
There is risk of fire, electric shock, explosion, or injury.
1

● Do not install the product on a defective installation stand.
It may cause injury, accident, or damage to the product.
● 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.
Moisture may condense and wet or damage furniture.
● Take care to ensure that 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 (operation) the product with wet hands.
There is risk of fire or electric shock.
● Do not place a heater or other appliance near the power cable.
There is risk of fire and electric shock.
● Do not allow water to run into electric parts.
It may cause fire, failure of the product, or electric shock.
● Do not store or use flammable gas or combustible near the product.
There is risk of fire or failure of product.
● Do not use the product in a tightlyclosed space for a long time.
Oxygen deficiency could occur.
● When flammable gas leaks, turn off the gas and open a window for ventilation before turn
the product on.
Do not use the telephone or turn switches on or off. There is risk of explosion or fire.
● If strange sounds, or small 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.
2

● 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 (flooded or submerged), contact an Authorized service center.
There is risk of fire or electric shock.
● Be caution that 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 electric shock.
● When the product is 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.
To avoid vibration of water leakage.
● Do not install the product where thenoise or hot air from the outdoor unit could damage
the neighborhoods.
It may cause a problem for your neighbors.
● Use two or more people to lift and transport the product.
Avoid personal injury.
● Do not install the product where it will be exposed to sea wind (salt spray) directly.
It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause
product malfunction or inefficient operation.
3

OPERATIONAL
● Do not expose the skin directly to cool air for long periods of time.
(Do not sit in the draft).
This could harm to your health.
● 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.
It may cause product failure.
● 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.
● Do not touch the metal parts of the product when removing the air filter. They are very
sharp.
There is risk of personal injury.
● 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 object through air inlet or outlet while the product is operated.
There are sharp and moving parts that could cause personal injury.
● Do not drink the water drained from the product.
It is not sanitary could cause serious healthissues.
● Use a firm stool or ladder when cleaning or maintaining the product.
Be careful and avoid personal injury.
● Replace the all 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 batteries in a fire.
They may burn of explode.
● If the liquid from the batteries gets onto your skin or clothes, wash it well with clean water.
Do not use the remote of the batteries have leaked.
The chemical in batteries could cause burns or other health hazards.
4

2. Functions and control panel.
The controls featured in this manual are representative of many available models. Your model
may offer slightly different features.
•POWER
- Press the POWER button to turn the unit on or off.
When the unit is on,the power indicator light will be green.When the unit is off,the light will go out.
•MODE
- Push this button to cycle through the modes from COOL-HEAT-FAN-COOL.The green indicator light beside the
"MODE" option will illuminate, identifying the mode selected.
- COOL:The range of set temperature is 17OC/62OF~30OC/86OF. Cooling begins automatically when the room
temperature is above the set point,and stops when the room temperature is 2OC(4OF) below the set point.
But the compressor will run 5 minutes at least in COOL mode before stoping. The fan runs in continuous mode.
- HEAT:The range of set temperature is 17OC/62OF ~29OC/84OF. For heat pump models, the unit can
alternate to run between in reverse cycle heat mode and electric heater mode according to the difference
between the setting temperature and the room temperature. The fan motor cycles on and off with the compressor
and electric heater.
NOTE: The reverse cycle and electric heater can not be run at the same time.
- FAN:Fan operation only without heating and cooling.
5

UP/DOWN BUTTONS ( ▲ / ▼ )
- Push the UP (or DOWN) button to increase (or decrease) the set temperature of the unit in cooling
or heating mode.The temperature can be set by increments of 1OC (1OF).The setting temperature
appears in the display.
NOTE:Press and hold ▲ and ▼ buttons together for 3 seconds will alternate the temperature display between OC
&OF scale.
FAN (FAN SPEED)
- Every time you push this button,the fan speed cycles through the settings as follows:HIGH-MED- LOW-HIGH.
DISPLAYS:
- Shows the set temperature in OC or OF. While on Fan only mode,it shows the room temperature.
Control code:
LC-Pads on the control panel is not available.The unit can be setted by using wire cotroller only.
Error codes:
AS-Room temperature sensor error;
ES-Evaporator temperature sensor error;
CS-Condenser temperature sensor error;
OS-Outside temperature sensor error;
HS-Exhaust temperature sensor error;
NOTE:When error occurs,unplug the unit and plug it back in.If error repeats, call for service.
Other codes:
LO-Room temperature is lower than 0 OC/32OF;
HI-Room temperature is higher than 37 OC/99OF.
6

3. Dimension
Dimension 1
（no sleeve,rear grille,and rear net)
WxHxD（mm)
Dimension :
Dimension 2
（no rear grille and rear net, but include sleeve)
Dimension 3
（include sleeve and rear net)
Dimension 4
（include sleeve, rear net and rear grille)
1067x406x532
1067x408x578
1067x408x588
1067x408x606
W
D
H
To p View
Front View
WxHxD（inch
)
42.0x15.9x20.9
42.0x16.0x22.8
42.0x16.0x23.1
42.0x16.0x23.9
7

4. Refrigerant Cycle Diagram
The figure below is a brief description of the important components and their function in what is called the
refrigeration system.
This will help to understand the refrigeration cycle and the flow of the refrigerant in the Heat Pump Cycle.
LIQUID SIDE
GAS SIDE
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
CHECK VA LV E
(Heating Model only)
CAPILIARY TUBE
REVERSING VA LV E
(Heating Model only)
COOLING
HEATING
ACCUMULATOR
8

HE
5. Wiring Diagram
9
DISPLAY
B OARD
CN20
CN7
CN8
CN9A
COMP.
CAPACI TOR
DHAT2
RED
YELLOW
RED
Y/G
BLUE
BLACK
BLACK
BLUE
BROWN
FAN
CAPACITOR
Y/G
R
C
S
~
CO M P.
P04
RED WHITE
BLUE
OverLoad
Protector
ATER1
_
Indoor-Fan
CN6
DHAT1
CN5
Outdoor-Envir.
CN4
Outdoor-Pipe.
CN3
Indoor-Envir.
Indoor-Pipe.
WHITE
_
Outdoor-Fan
BLUE
BROWN
FAN
CAPACITOR
RED
BLACK
CN12A
Y/G
MAIN B OARD
4
3
4
3
RY3
RY5
BLACK
HEATER2
3
4
RY2
RY4
3
4
RY1
BLACK
P05
BLACK
P03
P08
P02 P09
RED
BLUE
RED
EL
SU
3
4
CN1
CN2
RED
YELLOW
P12
P13
BLUE
BLUE
4-Valve
Trans1
P06
202021490312
Y/G
This s ym bol
represents
the b ra cke t o f
elec tri c
heat er.
Notes 2:
This s ymbol
indi cat es
the e le men t
is o p tion al,
the a ct ual
shap e s hal l
prev ail
Notes 1:
Y/G
FUSE1
FUSE2
BLUE BLUE
NOTE 3:USE COPPER CONDUCTOR S ONLY!
POWER
BLACK(or BROWN)
WHITE(or BLUE)
Y/G(or GREEN)
POWE R
CO N NEC TOR
POWER
POWER
CO R D
WHITE(or BLUE)
Y/G(or GREEN)
WHITE(or BLUE)
BLACK(or BROWN)
Y/G(or GREEN)
S UB -BA SE
KTHN007E3C211-B
KTHN009E3C211-B
KTHN012E3C211-B
KTHN015E5C210-B
KTHN007E3H211-B
KTHN009E3H211-B
KTHN012E3H211-B
KTHN015E5H210-B

6 Electronic function
6.1 Terms and definitions
T1: Temperature of indoor ambient
T2: Temperature of evaporator
T3: Temperature of condenser
T4: Temperature of outdoor ambient
TS: The set temperature.
DAHT: Temperature of discharge (T5)
DAHT: Temperature of discharge (T6)
6.2 Electric Control working environment
Input voltage: 265V, 60Hz; 230/208V, 60Hz
6.4 Operation of fan motor
6.3 Protection function
10
T4
T01
Operate on high speed
T02
Operate on low speed
FIG.A
6.3.1 The compressor functions protection with a delay of three minutes.
6.3.2 Sensor protection at open or short circuit.
6.3.3 Evaporator anti-icing protection at cooling mode.
6.4.1. Fan motor is on when compressor is on, Fan motor is off when compressor is off. (except theT2 high
Temp. protection).
If there’s only one speed of the fan motor, use the high speed instead of the low speed.
6.4.2. The fan motor operates at the cooling only mode (see FIG.A)

When T4 > T01 and lasts for 1 minute, the fan motor will operates at high speed.
When T4 < T02 and lasts for 1 minute, the fan motor will operates at low speed.
A) If fan motor is off originally, it will operate at high speed.
B) If fan motor is on originally, it will keep on working at the original speed.
6.4.3. The fan motor operates at the heat pump and cooling mode( see FIG.B)
11
T4
T03
Operate on high speed
T04
Operate on low speed
FIG.B
When T4≥T03 and lasts for 1 minute, the fan motor will operates at low speed.
When T4≤T04 and lasts for 1 minute, the fan motor will operates at high speed.
When T04<T4<T03:
A) If fan motor is off originally, it will operate at high speed.
B) If fan motor is on originally, it will keep on working at the original speed.
6.4.4. The high temperature protection of evaporator at the heat pump and cooling mode as
below:
TE7
TE8
TE15 TE9
Compressor
Fan motor
Fan motor
(low speed)
Compressor on
Fan motor on
(High/low speed is
determined by T4)
Compressor
Fan motor
Compressor on
Fan motor on
(High/low speed is
determined by T4)

12
If T2>Te7, this unit turns into the protection of compressor off , and quits this protection when T2≤TE9.
If T2>TE8,it turns into the protection of fan motor off , and quits this protection when T2≤TE9.
If T2>Te15, fan motor operates at low speed by force, then quits the operation and determines the
high or low speed by T4.
6.4.5. At the fan only mode, the fan always keeps on working, and the compressor/fan
motor/heater stop working.
6.5 Operation of compressor
6.5.1. The compressor operates at cooling mode as below:
(T1-Ts )
+0
-4
Compressor on
Operation conditon
Compresso r off
T1≥Ts compressor on
T1≤Ts-4
OF.
compressor off
6.5.2. The compressor operates at heating mode:
(There are two ways of heating mode: Heat pump and cooling/Electric heater and cooling)
The electrical heater or compressor will be activated by sensing the difference between setting
temperature and the actual ambient room temperature.
(T1-Ts)℉
2
-2
Operation conditon for
heater or compressor
Heater(compressor) off
Heater(compressor) on

13
6.5.2.1 The Electric heater operates as below:
a.When T1<Ts-2
OF
, the fan motor operates, and 3 seconds later, the heater is on and operates at low
speed within 30 seconds. After 30 seconds, it will change to the setting speed. If the DAHT temperature
checked is higher than the protection temperature, when the heater operating, the fan motor will be off
automatically.
b. When T1≥Ts+2 , the heater is off, and the fan motor keeps on working at setting speed. If the DAHT
temperature checked is low than the protection temperature, and the operation time of fan motor is more
than 15 seconds, then the fan motor will be off. If the T2 protection gets started, the fan motor also does
not work.
6.5.2.2 The Heat pump operates as below:
The Heat pump′s operation mode is in accordance with the way of compressor′s working.
The compressor is on (electric heater is off), the fan motor operates according to the anti-cold wind of
heat pump. The four-way valve always keeps on. When T1<Ts-2
OF
, the compressor is on, and when T1
≥Ts+2
O
,it will be off. The fan motor works according to the operation of compressor. If T2>TE7, the
compressor is off by force. When the DAHT protection gets started, it is not allowed that the compressor
operates.
6.6 Dip switches and Jumper selection
Note: This Switch board is optional.
Dip switches
Dip Switches configurations and functions of each dip switch position.
(See Figure and Table 1 as below)

UP(1)
DOWN(0)
1 2 3 4 5 67
Fan CON/CYC for cooling
Fan CON/CYC for heating
Setpoint limit 2
Wall thermostat enable
Te mperature display in
℉
Electric heat only(for heat pump)
Setpoint limit 1
Table 1---- DIP SWITCHES CONFIGURATIONS
No. UP(1) DOWN(0) Remarks
Electric heat only1
2
3
4*5
6
7
Te mperature display in ℉
Wall thermostat enable
1*1:61
1*0:65
0*1:63
0*0:68
Fan continuous run for heating
Fan continuous run for cooling
Electric heat and heat pump
Te mperature display in ℃
Control panel enable
For heat pump unit only
Two configurations(4*5)
combine to select set point
range
Fan cycle for heating
Fan cycle for cooling
NOTE: On heating mode, the setting temperature can’t be higher than 29
OC
/84
OF
.
* Electric Heat Only (for heat pump unit only)
- This setting is typically used for Emergency Heating.
* Wall Thermostat Enable
- A wired wall thermostat can be connected to the unit .If it is, this dip switch must be moved to the
Wall Thermostat Enable Position, before the wall thermostat will begin control.
* Set-point Temperature Limits
- Provides a restricted range of temperature control.
* Heat and Cool Fan CON/CYC Dip-switches
- Allows the fan to operate in continuous or cycle modes while the unit is in heating and cooling mode.
* Continuous (CON)
- Allows fan to run continuously, circulating air even when the temperature setting has been satisfied. This
switch helps to maintain the room temperature closer to the thermostat setting.
* Cycle (CYC)
- This setting allows the fan to cycle on and off with the compressor or electric heater. The fan stops a short
time after the temperature setting is satisfied.
14

6.7 Functions for Front desk switch panel and Wire Controller.
1.Front desk switch panel: if a ON/OFF switch is connected to the ports, you can turn off A/C unit with it.
Then the digital LED on the unit will display FC.
(The FIG.A shows you how to connect the units)
2. Wired controller: the digital LED will display LC (Reserved) if a wired controller is connected.
if the communication portal is one way, the buttons on the control panel will be invalid.
Note: This wired controller is optional, and it’s matched with the switch board.
ROOM 100 ROOM 101 ROOM N
FIELD-SUPPLIED
24V
TRANSFORMER
(SEE NOTE1)
Black White Black White Black White
PTAC #1 PTAC #2 PTAC #N
FRONT DESK SWITCH PANEL
15

16
SUGGESTIONS:
1. TO Size transformer, use the following equation:
Quantity of PTAC units x 1 VA =Transformer Size (VA)
Example: 110 PTAC units x1 VA =110 VA Transformer
2. Following are American Wire Gauge recommended sizes:
AWG WIRE SIZE NO. MAX. LENGTH (ft)
24 400
22 600
20 900
18 1500
16 2000
7. Unit components
Exploded view

17
Wall
Installation guide
8. Installation details
8.1 How to install the unit
iINSTALLATION
There are sharp edges that can cause serious cuts.
When lifting the air conditioner, it is HEAVY.Use 2 people to lift.
c
!
CAUTION

18
- For existing sleeve,you should measure the wall
sleeve dimensions.
- Install the new air conditioner according to these
installation instructions to achieve the best performance.
All wall sleeves used to mount the new air conditioner
must be in good structural condition and have a rear
grille that securely attaches to the sleeve or the flange
of the sleeve to secure the new air conditioner.
- To avoid vibration and noise,make sure the unit is
installed securely and firmly.
- When installing the sleeve,make certain there is
nothing within 20 of the back that would interfere
with heat radiation and exhaust air flow. (See Fig.2)
1067mm/42inch
408mm/16inch
606mm/23.9inch
Dimension of air conditioner
cooled air
Intake air
Wall
Wall
Heat
Radiation
Sleeve
Over 20
376mm/14.8inch
408mm/16inch
1067mm/42inch
Fig.3
Shipping
tape
- Pull out at the bottom to release it from the tabs .
- Then lift up
A
B
A
BFig.4
Fig.5
Shipping
screw
● PREPARATION OF SLEEVE ASSEMBLY(optional)
- Refer to the installation instruction of sleeve assembly
for details.
● UNIT INSTALLATION
- Carefully remove shipping tapes from the front panel.
(See Fig.3)
- Remove the front panel. (See Fig.4)
- Remove the shipping screw from the vent door.
(See Fig.5)
● UNIT INSTALLATION (CONTINUED)
- Rotate the vent control lever to either open or close the vent
door. (See Fig.6)
Vent control lever
Vent open
Vent closed
Fig.6