PTAC-B Series Heat Pump Air Conditioner

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Product Information

Specifications:

• Model: PTAC-B Series

• Cooling Capacity: 7K-15K BTU/h

• Models Covered: ACiQ-07PTC-B, ACiQ-09PTC-B, ACiQ-12PTC-B,
  ACiQ-15PTC-B, ACiQ-15PTC5-B

• Version Date: 03-11-24

Product Usage Instructions

1. Safety Precautions:

To prevent injury or damage, follow these safety
precautions:

• Read the service manual before using the unit.

• Always ground the product.

• Install on a dedicated circuit with correctly rated breaker or
  fuse.

• Do not modify power cables or attempt repairs by yourself.

• Be cautious of sharp edges during unpacking and
  installation.

2. Installation:

Proper installation is crucial for safety and performance:

• Do not use a defective circuit breaker; contact a qualified
  electrician for electrical work.

• Securely install the panel and control box cover.

• Avoid improper wiring or installation to prevent fire or
  electric shock.

• Do not install on a defective installation stand.

• Ensure the installation area is stable and does not
  deteriorate.

3. Maintenance and Operation:

Follow these guidelines for proper maintenance and
operation:

• Avoid operating the unit for long durations in high humidity
  without ventilation.

• If strange sounds or smoke is noticed, turn off the power
  immediately.

• In case of flooding, contact an Authorized service center.

• Ventilate the area when using the unit with other
  heat-producing appliances.

• Turn off the main power when cleaning or performing
  maintenance.

Frequently Asked Questions (FAQ):

Q: What should I do if the unit makes unusual
sounds?

A: If you hear strange sounds or notice smoke,
immediately turn off the power supply and contact a service center
for assistance.

Q: Can I extend the power cable of the
unit?

A: It is not recommended to modify or extend
the power cable of the unit as it may pose a risk of fire or
electric shock. Always use the original cable provided.

Q: How often should I ventilate the area when using the
unit with a stove?

A: It is recommended to ventilate the area from
time to time to reduce the risk of fire or electric shock when
operating the unit with other heat-producing appliances.

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SERVICE MANUAL
PTAC-B SERIES: 7K-15K BTU/H
Models Covered: ACiQ-07PTC-B ACiQ-09PTC-B ACiQ-12PTC-B ACiQ-15PTC-B ACiQ- 15PTC5-B
VERSION DATE: 03-11-24

CONTENTS
1. Precaution…………………………………………………………………………………………………………………………… 1 1.1 Safety Precaution………………………………………………………………………………………………………………. 1 1.2 Warning…………………………………………………………………………………………………………………………….. 1 2. Functions and control panel …………………………………………………………………………………………………….. 6 3. Dimension …………………………………………………………………………………………………………………………….. 9 4. Wiring Diagram …………………………………………………………………………………………………………………….. 10 5. Refrigerant Cycle Diagram……………………………………………………………………………………………………….11 6.Function and control panel…………………………………………………………………………………………………. 12 6.1 Terms and definitions………………………………………………………………………………………………………….. 12 6.2 Electric Control working environment…………………………………………………………………………………….. 12 6.3 Protection Function…………………………………………………………………………………………………………….. 12 6.4 Fan only mode …………………………………………………………………………………………………………………… 12 6.5 Cooling mode…………………………………………………………………………………………………………………….. 12 6.6 Heating mode…………………………………………………………………………………………………………………….. 13 6.7 Drying mode ……………………………………………………………………………………………………………………. 15 6.8 DIP switches configurations…………………………………………………………………………………………….. 15 6.9 Dip switches configurations by panel control (Optional) …………………………………………………… 17 6.10 Wall Thermostat Terminal(Optional) ……………………………………………………………………………….. 18 7. Unit components……………………………………………………………………………………………………………….. 21 8 Installation details………………………………………………………………………………………………………………. 22 8.1 Before you get start …………………………………………………………………………………………………………. 22 8.2 Before the installation ……………………………………………………………………………………………………… 23 8.3 Installation overview………………………………………………………………………………………………………… 23 8.3 Care and clean…………………………………………………………………………………………………………………. 27 9 Operation characteristics……………………………………………………………………………………………………. 28 9.1 Cooling operation ……………………………………………………………………………………………………………. 28 9.2 Heating operation…………………………………………………………………………………………………………….. 28 10 Power connection options ………………………………………………………………………………………………… 29 11.Troubleshooting ……………………………………………………………………………………………………………….. 31 11.1 Error Display………………………………………………………………………………………………………………….. 31 11.2 Troubleshooting ………………………………………………………………………………………………………………… 32

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 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.
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.
Do not install the product on a defective installation stand. 1

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 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 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. Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the
unit is so equipped.)
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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 the noise 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.
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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. Do not step on pr put anything on the product. (outdoor units)
There is risk of personal injury and failure of product. 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 health issues. 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
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Warning
-Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. -The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater). -Do not pierce or burn. -Be aware that the refrigerants may not contain an odour. -Compliance with national gas regulations shall be observed. -Keep ventilation openings clear of obstruction. -The appliance shall be stored so as to prevent mechanical damage from occurring. -A warning that the appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as specified for operation. -Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certificate from an industry-accredited assessment authority, which authorises their competence to handle refrigerants safely in accordance with an industry recognised assessment specification. -Servicing shall only be performed as recommended by the equipment manufacturer. Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of flammable refrigerants.
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2. Functions and control panel

1 POWER Function
2 Mode Function

Description – · Press the POWER button to turn the unit on or of.
– · Push this button to cycle through the modes from COOL-DRY-HEAT-FAN-COOL. The indicator light beside the “MODE” option will illuminate, identifying the mode selected. · COOL: Cooling begins automatically when the room temperature is above the set point, and stops when the room temperature is 2°C(4°F)below the set point. But the compressor will run 5 minutes at least in COOL mode before stopping. · HEAT: 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 with the compressor stop. DRY : In this mode, the air conditioner will generally operate in the form of a dehumidifier. Since the conditioned space is a closed or sealed area, some degree of cooling will continue. NOTE: The reverse cycle and electric heater cannot be run at the same time. In following cases, it is normal that the reverse cycle does not operate. 1. When the outdoor temperature is lower than 4°C/40°F or the room temperature falls to 4.5°C/8°F below the set point temperature. 2. There is a 3-minute minimum compressor run time at any setting to prevent short cycling. The indoor fan motors starts before the compressor and stops after the compressor cycles of. 3. Push the S1 on the DIP SWITCHES to UP (ON) position. 4. When frost builds up to the evaporator coils, the unit will defrost automatically and the compressor will cycle of. NOTE: When you select AUTO mode, the FAN speed will be automatically adjusted at the setting temperature and room temperature. · FAN: Fan operation only without heating and cooling.

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NOTEIf the unit has DIP SWITCHES feature, the temperature range can be set is controlled

by DIP SWITCHES. See DIP SWITCHES CONFIGURATIONS for details.

3 Up and Down · Push the UP (or DOWN) button to increase (or decrease) the set temperature of the unit in

buttons

cooling or heating mode. The temperature can be set by increments of 1°C (1°F).The setting

temperature appears in the display.

NOTE: Press and hold “+”and”-” buttons together for 3 seconds will alternate the temperature

display between °C &°F scale.

4 FAN (FAN – Every time you push this button, the fan speed cycles through the settings as follows:

SPEED)

AUTO-HIGH-LOW-AUTO.

– Function

NOTE: When you select AUTO mode, the FAN speed will be automatically adjusted at the

setting temperature and room temperature. On Dry mode, the fan speed is controlled at Low

speed automatically.

5 CONSTANT · In cooling mode, press the button to turn on or of the constant fan function. When the function

FAN

is turned on, the constant fan light will illuminate, identifying the fan continuous run for cooling.

– Function

When the function is turned off, the constant fan light will go out, identifying the fan cycle run

with compressor stop.

NOTE: Every time the unit is turned on, the function will work as the DIP SWITCHES

CONFIGURATIONS.

6 PANEL

· Long press the open key and continuous air function key for 5 seconds at the same time.

LOCKING

Quick check immediately response, no 5 seconds. Turn on or of the lock panel function. The

– Function

remote control still works.

Fast entry, and exit when unlocking function. NOTEIt will be display ‘LL’ when you locked the control panel.

7 DISPLAY

· Shows the set temperature in °C or °F. While on Fan only mode, it shows the room

temperature.

Control code (on some models):

LC – Pads on the control panel is not available. The unit can be set by using wire controller only.

FC – Pads on the control panel and wire controller are not available.

The unit can be set by using FRONT DESK CONTROL only.

Error codes:

E0-EEPROM parameter error

E3-The indoor fan speed is operating outside of the normal range

E4-Main control and Display communication error

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;

LE – Drive-by-wire control failure;

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°C/32°F;

HI – Room temperature is higher than 37°C/99°F;

FP – Low temp. Protection.

NOTE: All the illustrations in this manual are for explanation purpose only. Your air conditioner

may be slightly different. The actual shape shall prevail.

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NOTE: When the unit displays LC (Pads on the control panel is not available. The unit can be set by using wire controller only). You can install the Accessory on the control panel. NOTE: For some models, there is corresponding operation happened after 3 seconds when pressing any button.
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3. Dimension
Top View D

W

H

Front View

Dimension
Dimension 1 (no sleeve, rear grille and rear net)

WxHxDmm) WxHxDinch) 1067x406x532
42.0×15.9×20.9

Dimension 2

1067x408x578

(no rear grille and rear net, but include sleeve) 42.0×16.0x22.8

Dimension 3 (include sleeve and rear net)

1067x408x588 42.0×16.0x23.1

Dimension 4 (include sleeve, rear net and rear grille)

1067x408x606 42.0×16.0x23.9

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4. Wiring Diagram
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5. Refrigerant Cycle Diagram
The figure below is a brief description of the important components and their function in what is called the refrigerant system. This will help to understand the refrigeration cycle and the flow of the refrigerant in the Heat Pump Cycle.

CAPILLARY TUBE

T3 Condenser temp. sensor

HEAT EXCHANGE (EVAPORATOR)

T1 Room temp. sensor

T4 Ambient temp. sensor

HEAT EXCHANGE (CONDENSER)

T2 Evaporator temp. sensor

4-WAY VALVE

Compressor

COOLING HEATING

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6.Function and control panel
6.1 Terms and definitions
TA: Temperature of indoor ambient(T1) TE: Temperature of evaporator(T2) TC: Temperature of condenser(T3) TO: Temperature of outdoor ambient(T4) TS: The set temperature. DAHT: Temperature of discharge (T5) DAHT: Temperature of discharge (T6)
6.2 Electric Control working environment
Input voltage: 208/230V, 60Hz, 1 Ph
6.3 Protection Function
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-freezing protection in cooling mode and dry mode.
6.4 Fan only mode
6.4.1 Temperature control is disabled, and the room ambient temperature is display on LED. 6.4.2 The Timer function is valid in this mode. 6.4.3 Compressor, outdoor fan, electric heater and 4-valve cease operation.
6.5 Cooling mode
6.5.1 The speed of indoor fan can be optionally chosen as Auto/High/Low. Auto fan:
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TA-TS
High 1.5 -0.5
Low
When the fan is running at low speed, if TA TS + 1.5°C(3), the fan motor will operates at high speed When the fan is running at high speed last for 1 minute, if TATS -0.5 °C(1), the fan motor will operates at low speed 6.5.2 Operation of outdoor fan motor
The operation of outdoor fan is consistent with the operation of compressor. (except theT2 low temperature protection). 6.5.3. Compressor Running Guidelines The compressor will be activated by sensing the difference between setting temperature and the actual ambient room temperature. The compressor operates as below:
6.5.4 The Timer/ Sleep/ Energy Saver/ Follow Me functions are valid in the cooling mode. 6.5.5 Evaporator Anti-freezing Protection
When evaporator temperature drops below 2(4) last for 240s, the compressor and outdoor fan cease operation.
6.6 Heating mode
6.6.1 The speed of indoor fan can be optionally chosen as Auto/High/Low. Auto fan:
TA-TS
Low 0.5 -1.5
High
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When the fan is running at low speed, if TATS-1.5°C(3), the fan motor will operates at high speed When the fan is running at high speed last for 1 minute, if TATS+0.5°C(1), the fan motor will operates at low speed 6.5.2 Operation of outdoor fan motor The operation of outdoor fan is consistent with the operation of compressor. (except theT2 high temperature protection). 6.6.3. Compressor Running Guidelines The compressor will be activated by sensing the difference between setting temperature and the actual ambient room temperature. The compressor operates as below:
6.6.4 The high temperature protection of evaporator as below:
6.6.5 The Electric heater operates as below:
a. When TATs-1(2), the fan motor operates, and fan speed is higher than 800RPM for 3 seconds, the heater is on and when fan speed is below 700RPM for 3 seconds, the heater is off. The indoor fan operates at low speed within 30 seconds. After 30 seconds, it changes to the setting speed. b. When TATs+1(2), the heater is off, and the fan motor keeps on working at setting speed. If the DAHT temperature checked is lower than the protection temperature, and the operation time of fan motor is more than 15 seconds, then the fan motor is off. c. If the DAHT temperature checked is higher than the protection temperature, the heater is off and the fan motor keeps on working. Until the DAHT temperature checked is lower than the protection temperature, the heater is on. d. If the DAHT temperature sensor is in open circuit or has short circuited, the heater is off and the fan
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motor is off 30 seconds later. e. If the ambient temperature sensor is in open circuit or has short circuited, the heater is off and the fan motor is off 30 seconds later.
6.6.6 The Heat pump operates as below:
1. The Heat pumps operation mode is in accordance with the way of compressors 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 TA<Ts-1(2), the compressor is on, and when TATs+1(2),it will be off. Before starting the compressor, the indoor fan motor should run for 10 seconds first. TA is not judged within 5 minutes after starting the compressor, but it is judged immediately if the set temperature is changed. 2. Anti-cold air function When the compressor is started, the fan runs at low speed for 3 minutes, then if indoor coil temperature T2 is lower than 27(80) , the fan runs at low speed still, if indoor unit coil temperature T2 is higher than 30(86), it changes to the setting speed. 3. When the compressor is turned off, when the indoor coil temperature T2 is lower than 27(80), indoor fan stops running, otherwise the indoor fan runs at low speed, but the longest time is less than 30 seconds.
6.7 Drying mode
6.7.1. Indoor fan speed is fixed at low and can’t be changed. 6.7.2. Compressor control is the same as in cooling mode. 6.7.3 All protections are active and the same as that in cooling mode.
6.8 DIP switches configurations
Note: Unit must be powered OFF to effectively change their status.
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Table 1- DIP SWITCHES CONFIGURATIONS

No.

UP(ON)

DOWN(OFF)

Remarks

S1

Electric Heat Only

Electric Heat and Pump For Heat Pump unit

Heat

only

S3

Wall Thermostat Enable

Control Panel Enable

S4*S5

UP*UP:60°F~86°F(16°C~30°C);

Two configurations

UP*DOWN:65°F~78°F(18°C~26°C);

(S4*S5) combine to

DOWNUP:63°F~80°F(17°C~27°C); DOWNDOWN:68°F~75°F(20°C~24°C);

select set point range.

S6

Fan Continuous Run for Heating Fan Cycle for Heating

S7

Fan Continuous Run for Cooling Fan Cycle for Cooling

S8

Low temp. Protection enable

Low temp. Protection

Optional

disable

S9 (S3UP)

Use other types of wall

Use other types of wall you can consult with

Thermostat

Thermostat

the sales agency or manufacturer for

details

S9 (S3DOWN)

Use Control Panel only

Use Control Panel or other types of wall Thermostat

Use control Panel or some types of wall Thermostat, the other

one must be turned off

S11

Load delay for 3 seconds

Normal

Optional

• 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)

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– 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.
6.9 Dip switches configurations by panel control (Optional)
Note: Unit must be powered OFF to effectively change their status. – Press the up and down buttons together for 3 seconds to activate the dip switches configurations by panel control (see Fig). – See Table 2 for Dip Switches configurations and functions by panel control. NOTE: Press the up and down buttons together for 3 seconds again or no operation within 30 seconds to exit the dip switches configurations by panel control and the unit will save the last settings. – Display function settings with 2 digitals in LED display window, high (left) for dip switches, low (right) for functions (see Fig). – Press up button to set the dip switches, press down button to set the functions.

Table 2 DIP SWITCHES CONFIGURATIONS by PANEL CONTROL

No. High(left)

Low(right)

Remarks

/

0

1-by panel control

0-by dip switches

S1

1

S3

3

S4*S5

4

1-electric heat only

0-electric heat and pump heat

3-use control panel or some types of wall thermostat;

2-use other types of wall thermostat;

1-use other types of wall thermostat;

0-control panel enable.

4:62~86(17~30); 3:60~86(16~30);

2:65~78(18~26); 1:63~80(17~27);

0:68~75(20~24);

For Heat Pump unit only
You can consult with the sales agency or manufacturer for details

S6

6

1-fan continuous run for heating

0-fan cycle for heating

Not available for “use PTAC

S7

7

1-fan continuous run for cooling

0-fan cycle for cooling

other wall thermostat”.

S8

8

SW7

A

S11

B

Note:

1-low temp. protection enable 1-front desk control disable 1-Load delay for 3 seconds

0-low temp. protection disable 0-front desk control enable 0-normal

Optional Optional Optional

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1. The LED display window will show “00” when you first enter the setting mode, only when you set “01” you can start the next settings.
2. To activate front desk control function, you need to pull the dip switch SW7 to DOWN(OFF), and then set the Panel control to A0. 3. After all set, press up (+) and down (-) buttons together for 3 seconds to exit the operation interface
and cut off the power. When re-power on, the settings are activated.
6.10 Wall Thermostat Terminal(Optional)
IMPORTANT: Only trained, qualified personnel should access electrical panel on unit and install electrical accessories. Please contact your local electrical contractor, dealer, or distributor for assistance. 1. Thermostat Wire Routing Thermostat wire is field supplied. Recommended wire gauge is 18 to 20 gauge solid thermostat wire. NOTE: It is recommended that extra wires are run to unit in case any are damaged during installation. Thermostat wire should always be routed around or under, NEVER through, the wall sleeve. The wire should then be routed behind the front panel to the easily accessible terminal connector.
NOTE: Refer to thermostat installation instructions for details on installing wall thermostat. 2. Installation instruction of some types of wall Thermostat (you can consult with the sales agency or manufacturer for details) – Pull the dip switch to the DOWN(OFF) position as shown below.
– Insert the wire connector of the wall thermostat into the relevant terminal according to different shapes as shown below.
3. Installation instruction of PTAC other Wall Thermostat – Remove the two screws as shown below and take the cover panel down.
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TERMINAL DESIGNATION

MODE B Wire color

FC(L)

Front desk control terminal L

Brown

FC(N)

Front desk control terminal N

Pink

LOW-FAN Low fan speed

Purple

HI-FAN

High fan speed

Green

4-WAY

4-way valve; Reverse cycle (Energized in Blue

Heat) For heat pump models

HEAT2

Electrical heater 2

White

HEAT1

Electrical heater 1

White

COMP

Compressor

Yellow

24V(N)

24VAC terminal N(Neutral),Common

Black

24V(L)

4VAC terminal L

Red

Caution: UNIT DAMAGE HAZARD

· Failure to follow this caution may result in equipment damage or improper

operation.

· Improper wiring may damage unit electronics. Common busing is not permitted.

Damage or erratic operation may result.

Note:

· Use terminal 4-way for heat pump connection only.

· Suggest set the compressor protection time more than 3 minutes in wall

thermostat. If set less than 3 minutes, the compressor will restart delay 3 minutes

still.

· Wall thermostat must be heating changeover 4-way valve.

· For thermostats that have only one fan speed output (on or auto),the fan speed is

determined by how the terminal connector is wired. If Low fan is desired, wire the

G output from the thermostat to (LOW-FAN) on the units terminal block.

· If High fan is desired, wire the G output from the thermostat to (HI-FAN) on the

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units terminal block. · The range of set temperature of Wall thermostat must be in consonance with the
range of DIP switch setting. · Wall thermostat must be set the type properly in consonance with the unit type :
heat pump or no heat pump. · If the Wall thermostat has only one electrical heater output, connect the two
terminals of HEAT 1 and HEAT 2, the unit can operate two electrical heaters(only for the unit has two electrical heaters). Otherwise operate one electrical heater. · Please do not remove the control panel. 4. FRONT DESK CONTROL The controller can handle a switch signal from FC(L) and FC(N) input, called front desk control. Input must be 24VAC. If system doesn’t receive a 24VAC signal, it will turn unit off; otherwise, the unit runs in normal control. – The DIP switch can control the FRONT DESK CONTROL feature. The DIP switch is on the DOWN position, the unit will be turn off; otherwise, the unit runs in normal control.
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7. Unit components
Decomposition figure
wall
Installation figure
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8 Installation details 8.1 Before you get start
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8.2 Before the installation
8.3 Installation overview
Installing Unit into the wall
23

Type1: Instructions for non-265V models 24

Type 2: Instructions for 265V model (Optional) 25

26

8.3 Care and clean
27

9 Operation characteristics
9.1 Cooling operation 9.2 Heating operation
28

10 Power connection options
Appropriate power cord accessory kit is determined by the voltage, and amperage of the branch circuit. The unit does not come with a power cord (or hard wire kit). An accessory power cord must be ordered to connect the unit to the outlet. If the unit is to be hard wired, an accessory hard wire kit must be ordered.
IMPORTANT: For 265V units, if a power cord is selected, it must plug into the 265V subbase accessory.
Cord-connected Units The 240V field supplied outlet must match the plug for the standard 208/230V units and be within reach of the service cord. The standard cord-connected 265V units require an accessory electrical subbase for operation.
Power Cord Protection The power cord for 230/208v units provide power cord fire protection. Unit power automatically disconnects when unsafe conditions are detected. Power to the unit can be restored by pressing the reset button on plug head. Upon completion of unit installation for 230/208V models, an operational check should be performed using the TEST/RESET buttons on the plug head.
NOTE: The 265V models do not incorporate this feature as they require use of the electrical subbase accessory. Our sub base accessory is being developed

UNIT MODEL
ACIQ-07PTC-B ACIQ-09PTC-B ACIQ-12PTC-B ACIQ-15PTC-B ACIQ-15PTC5-B

POWER CONNECTION CHART

CODE OF POWER SUPPLY KIT

15A

20A

208 / 230 V

208 / 230 V

6-15P(15A / 240V )

6-20P(20A / 240V )

29

30

11.Troubleshooting

11.1 Information Inquiry

To enter engineer mode, in power-on or standby mode, and in non-locked state, press the key combination “+, – &

mode” for 5s:

Code Query Content

Displaying code Meaning

0

Error code

Na

1

T1

T1

T1 temp.

2

T2

T2

T2 temp.

3

T3

T3

T3 temp.

4

T4

T4

T4 temp.

5

Reserve

6

Reserve

7

Reserve

8

Reserve

9

Reserve

10 Indoor capacity test

Sn

11 Reserve

12 Outdoor fan speed

Pr

13 Reserve

14 Indoor fan speed

Ir

15 Reserve

Outdoor fan speed Indoor fan speed

16 Reserve

17

After-sales bar code writing

SH

18 WIFI signal strength

IF

19 Reserve

20 Reserve

21

Temperature of discharge (T5) T5

22

Temperature of discharge (T6) T6

23 Filter time

FL

Exit conditions: 1. Engineering mode is displayed for 10 minutes in 17 channels and exits after 1 minute in other channels. 2. Switch on/off, change mode, fan speed or set temperature, exit the engineering mode.

31

11.2 Error Display

Codes

Contents

AS Open or short circuit of T1 temperature sensor ES Open or short circuit of T2 temperature sensor CS Open or short circuit of T3 temperature sensor oS Open or short circuit of T4 temperature sensor HS Open or short circuit of T5 or T6 temperature sensor Lo Temperature is lower than display range(0/32) HI Temperature is higher than display range(37/99) FP Low temp. Protection E4 Communication malfunction between main control board and display board. LE Drive-by-wire control failure E0 EEPROM parameter error E3 The indoor fan speed is operating outside of the normal range

11.2 Troubleshooting

11.2.1 Open circuit or short circuit of temperature sensor diagnosis and solution(AS/ES/CS/oS/HS)

Error Code

AS/ES/CS/oS/HS

Malfunction decision conditions Supposed causes
Troubleshooting:

If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED will display the failure. Wiring mistake Faulty sensor

Check the connection between temperature
sensor and PCB.

No

Correct the connection

Yes

Measure the resistance

value of the sensor

No

Repalce the sensor

Yes

Replace indoor main PCB

32

11.2.2 Communication malfunction between main control board and display board. (E4)

Error Code

E4

Malfunction decision conditions Supposed causes
Troubleshooting:

Main control board does not receive feedback from display board during 120 seconds. Wiring mistake Faulty display board

Communication malfunction between main control board and display board

Check the signal wire between the Display board and the main board,
is it connected good?

No

Yes

Reconnect and retry. Is error

still display?

Yes

Replace display board, Is error still display?
Yes
Replace the main control board

No No Trouble is solved

33

11.2.3 Drive-by-wire controller failure. (LE)

Error Code

LE

Malfunction decision conditions
Supposed causes Troubleshooting:

1, Electric heating signal or compressor signal is on, but fan signal is off 2, Electric heating signal and compressor signal are on, but 4-way valve signal is off
Wiring mistake Faulty wire controller

Electric heating and compressor are on, but 4-
way valve is of f
Yes
Check whether the wiring between controller and dip
swit ch board is correct

No No

Electric heating or compressor is on, but fan is
of f
Yes
Check whether the wiring between controller and dip
swit ch board is correct

No No

Cooling only models have heating signal, or the 4-way valve and compressor signal
are on at the same time.
Yes
Wire controller is set wrong

Yes

reconnection

Yes

reconnection

Wire controller doesn’t match, change the wire
controller

4-way valve is set wrong

DIP SWITCH TERMINAL FC(L) FC(N) LOW-FAN HI-FAN 4-WAY HEAT2 HEAT1 COMP 24V(N) 24V(L)

DESIGNATION Front desk control terminal L Front desk control terminal N Low fan speed High fan speed 4-way valve(for heat pump model) Electrical heater 2 Electrical heater 1 Compressor 24VAC terminal N COM 24VAC terminal L

24V CONTROLLER
GL GH B W (W) Y C R

34

11.2.4 EEPROM parameter error. (E0)

Error Code

E0

Malfunction decision conditions Supposed causes
Troubleshooting:

PCB main chip does not receive feedback from EEPROM chip.
Installation mistake Faulty PCB

Shut off the power supply and turn it on 2 minutes later.

Is it still displaying the error code?
YES
Replace the main PCB.

NO

The unit is operating normally.

35

11.2.5 The indoor fan speed is operating outside of the normal range

Error code

E3

Malfunction conditions Potential Causes Troubleshooting:

When indoor fan speed is too low (80RPM) or too high (2100RPM) for a period of time, the unit ceases operation and the LED displays a failure code. Wiring mistake Faulty fan assembly Faulty fan motor Faulty PCB

Power off, then restart the unit after 2 minutes.

Does a problem remain?

NO

YES
Shut off the power supply, Rotate the fan by hand.

The unit is operating normally

Does it turn easily?

NO

YES Check the wiring of fan motor.

Find the cause of the problem and resolve it

Is it improperly wired?
YES Measure the voltage for the fan motor from the PCB.

Ensure proper connections

Is it within normal parameters? YES
Replace the fan motor

NO Replace the indoor main PCB

36

POSSIBLE CAUSES UNIT DOES NOT START

SOLUTONS Unit may have become unplugged. Check that plug is plugged securely in wall receptacle. Note: Plug has a test/reset button on it. Make sure that the plug has not tripped. Fuse may have blown. Replace the fuse. See Note 1. Unit may be off. Reset circuit breaker. See Note 1. Unit may be in a protection mode. Turn unit on (bottom right button on keypad).

UNIT NOT COOLING/HEATING ROOM
DISPLAY HAS STRANGE NUMBERS/ CHARACTERS ON IT UNIT MAKING NOISES WATER DRIPPING OUTSIDE WATER DRIPPING INSIDE ICE OR FROST FORMS ON INDOOR COIL

Unit air discharge section is blocked. Make sure that curtains, blinds or furniture are not restricting or blocking unit airflow. Temperature setting is not high or low enough. NOTE:Setpoint limits may not allow the unit to heat or cool the room to the temperature desired. Check section on dipswitch settings. Reset to a lower or higher temperature setting. Unit air filters are dirty. Remove and clean filters. Room is excessively hot or cold when unit is started. Allow sufficient amount of time for unit to heat or cool the room. Start heating or cooling early before outdoor temperature, cooking heat or gatherings of people make room uncomfortable. Vent door left open. Close vent door. Unit may be in a protection mode. Check dipswitch and wall thermostat settings for desired comfort. Compressor is in time delay. Wait approximately 3 minutes for compressor to start. The unit may be in a protection mode. The unit may be set for (instead of ).
Clicking, gurgling and whooshing noises are normal during operation of unit.
If a drain kit has not been installed, condensation runoff during very hot and humid weather is normal. See Note 2.If a drain kit has been installed and is connected to a drain system, check gaskets and fittings around drain for leaks and plugs.
Wall sleeve must be installed level for proper drainage of condensation .Check that installation is level and make any necessary adjustments.
Low outdoor temperature. When outdoor temperature is
approximately 55 or below, frost may form on the indoor coil when
unit is in Cooling mode. Switch unit to FAN operation until ice or frost
melts.

COMPRESSOR PROTECTION
ELECTRIC HEATING FAILURE NOTES:

Power may have cycled, so compressor is in a restart protection. Random Compressor restart – Whenever the unit is plugged in, or power has been restarted, a random compressor restart will occur. After a power outage, the compressor will restart after approximately 3 minutes. Clean the evaporator once every three months by professional people.
37

1.If circuit breaker is tripped or fuse is blown more than once, contact a qualified electrician. 2.If unit is installed where condensation drainage could drip in an undesirable location, an accessory drain kit
should be installed and connected to drain system.
38

Characteristic of temperature sensor

Temp./

Resistance K

Temp./

-10/14

62.2756

17/62

-9 /15.8

58.7079

18/64

-8 /17.6

56.3694

19/66

-7 /19.4

52.2438

20/68

-6 /21.2

49.3161

21/70

-5 /23

46.5725

22/72

-4 /24.8

44

23/73

-3 / 26.6

41.5878

24/75

-2 / 28.4

39.8239

25/77

-1 /30.2

37.1988

26/79

0 /32

35.2024

27/81

1 /33.8

33.3269

28/82

2 /35.6

31.5635

29/84

3 /37.4

29.9058

30/86

4 /39.2

28.3459

31/88

5 /41

26.8778

32/90

6 /42.8

25.4954

33/91

7 /44.6

24.1932

34/93

8 /46.4

22.5662

35/95

9 /48.2

21.8094

36/97

10 /50

20.7184

37/99

11 /51.8

19.6891

38/100

12 /53.6

18.7177

39/102

13 /55.4

17.8005

40/104

14 /57.2

16.9341

41/106

15 /59

16.1156

42/108

16 /60.8

15.3418

43/109

Resistance K
14.6181 13.918 13.2631 12.6431 12.0561 11.5 10.9731 10.4736 10 9.5507 9.1245 8.7198 8.3357 7.9708 7.6241 7.2946 6.9814

Temp./
44/111 45/113 46/115 47/117 48/118 49/120 50/122 51/124 52/126 53/127 54/129 55/131 56/133 57/135 58/136 59/138 60/140

6.6835 6.4002 6.1306 5.8736 5.6296 5.3969 5.1752 4.9639 4.7625 4.5705

61/142 62/144 63/145 64/147 65/149 66/151 67/153 68/154 69/156 70/158

Resistance K
4.3874 4.2126 4.0459 3.8867 3.7348 3.5896 3.451 3.3185 3.1918 3.0707 2.959 2.8442 2.7382 2.6368 2.5397 2.4468 2.3577 2.2725 2.1907 2.1124 2.0373 1.9653 1.8963 1.830 1.7665 1.7055 1.6469

39

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