Carrier 12K User manual

Miraco
220-240V ~ 50Hz 1Ph
380-420V ~ 50Hz 3Ph
R
2
2
Heat Pump
53QDMT Series
12K - 18K - 24K - 30K - 36K - 42K - 48K - 60K
Tropical
Compressor
Medium Static
Pressures
40~100
Pa
Inner Groove
Copper Tubing
Efficient
Fans
Efficient
Coils
Defrost
Protection
3 Minutes
Time Delay
Anti-Freezing
Protection
3
Min.
High Temp.
Protection
High
Temp.
Protect
Anti
Freezing
Cold Draft
Protection
Optional
Drain Pump
Durability
Easy Installation
& Maintenance
Self diagnostic
function
Refrigerant
Leak Detection
Fresh
Air
Slim
Design
Efficient
Operation
Efficient
Anti-dust Filters
Display
Panel
$
IAQ
Wired
Control
Wireless
Control
Auto
Fan Speed
Auto
Super
Quiet
Hydrophilic
Aluminum Fins
Auto Restart
Function
Timer
Functions
Independent
Dehumidication
Auto
Mode
ECO
Function
Slim Line
Ceiling Concealed Ducted Split Systems
Medium Static Pressure
MSP

0
TABLE OF CONTENTS
PAGENO.
1. KEY FEATURES 1
2. UNIT MODEL IDENTIFICATION 7
3. UNIT MODELS 8
4. DUCTED SPLIT SYSTEM DESCRIPTION 9
5. TECHNICAL SPECIFICATIONS 10
6. DIMENSIONS & WEIGHTS 13
7. PHYSICAL DATA 15
8. REFRIGERATION CYCLES 25
9. EXTERNAL STATIC PRESSURE VERSUS AIR FLOW DATA 35
10. SOUND LEVELS DATA 39
11. OPERATING LIMITS - COOLING 42
12. SYSTEM COOLING PERFORMANCE DATA 43
13. OPERATING LIMITS - HEATING 66
14. SYSTEM HEATING PERFORMANCE DATA 67
15. ELECTRICAL DATA 90
16. WIRING DIAGRAMS 91
17. OPTIONAL ACCESSORIES FOR INSTALLATION ( FIELD SUPPLIED ) 97
18. TROUBLESHOOTING 104

1
1. Key Features

2
Key Features (Cont.)

3
Key Features (Cont.)

4
Key Features (Cont.)

5
Key Features (Cont.)
1 2 3 4 5 6 7
The display panel id indoor unit contains the following function indicators :
1 MANUAL Button
* This button is used to operate the unit temporarily in case you misplace
the remote control or its batteries are exhausted.
* Once you push temporary button, the air conditioner will run in such order :
Auto, Forced cool, off and back to Auto
AUTO
The OPERATION lamp is lit, and the air conditioner will run under AUTO mode.
The remote controller operation is enabled to operate according to the received signal.
FORCED COOL
The OPERATION lamp flashes, the air conditioner will turn to AUTO after it is enforced to cool
with a wind speed of HIGH for 30 minutes. The remote controller operation is disabled.
OFF
The OPERATION lamp goes off. The air conditioner is OFF while the remote controller operation
is enabled.
2 OPERATION green led
* OPERATION green led lights on when the air conditioner operates
* OPERATION green led lights off when the air conditioner stops
3 TIMER green led
* TIMER green led lights on when timer function operates
* TIMER green led lights off when timer function stops
4 DEF. / FAN red led
* This led lights on when defrost protection is activated and lights off
when defrost protection terminates in heat mode.
5 ALARM red led
ALARM red led flashes when there is a malfunction in outdoor unit
6 Infrared Signal Receiver
( In case of using remote control )
7 Display Digital Tube
* This display shows error code in case of a malfunction.

6
Key Features (Cont.)
The electronic printed circuit board in the indoor unit is equipped with
smart self diagnostic function which automatically stops the operation of
the air conditioner in case of a malfunction.
Leds Status and Error Code on the display panel of indoor unit ( all sizes ) refer to
malfunction reason for easy fast service and maintenance.
Malfunction
Reason LED
OPERATION LED TIMER LED DEF/FAN LED ALARM
Malfunction
Code
Indoor air temperature sensor malfunction
E2
Indoor coil temperature sensor malfunction
E3
Outdoor coil temperature sensor
malfunction
E4
Outdoor unit malfunction
E6
EEPROM malfunction
E7
Pump temperature sensor malfunction
( option )
E5
Water-level alarm malfunction
E8
Refrigerant leak
X X EC
= Light = Flash at 5Hz = OFF
Leds status on the PCB of outdoor unit only sizes 36K – 42K – 48K and 60K ( 3Ph ) refers to malfunction reason
Protection function operates if a malfunction happens in the outdoor unit as below by leds of PCB of outdoor unit as follows:
Malfunction Reason LED 1 LED 2 LED 3
No defect off off on
Phase reversal on off on
Overload of current off on on
Phase loss on on on
NOTES
1- Prior to the malfunction repair,disconnect the electrical mains supply by moving the circuit breaker to OFF position.
2- After repairing the malfunction, connect the electrical main supply by moving the circuit breaker to ON position
and operate the air conditioner by using the wireless remote control or using wired room controller.

7
2. Unit Model Identification
53 Q D M T 18 - 7 1 8
8 = Miraco Sourced Product
1 = Standard Wired Control
7 = 220-240V / 1ph / 50Hz
5 = 380-420V / 3ph / 50Hz
System Size
T = High Ambient
M = Medium Static Pressure
D = Ducted
Q = Heat Pump
53 = Complete Split System
42 = Indoor Unit
38 = Outdoor Unit
Numeric Code
System Type
Family Type
Static Pressure Type
Climate Type
Power Supply
Control Type
Source
System Capacity kBtu/hr

8
3. Unit Models
3.1 Unit Models – Export Heat Pump
HEAT
PUMP
System
Model
Indoor Unit Outdoor Unit
Model P/N Model P/N Compressor
Type Supplier
53QDMT12-718 42QDMT12-718 46302363 38QDMT12-718 46302338 Rotary GMCC / Toshiba
53QDMT18-718 42QDMT18-718 46302331 38QDMT18-718 46302405 Rotary GMCC / Toshiba
53QDMT24-718 42QDMT24-718 46302332 38QDMT24-718 46302406 Rotary GMCC / Toshiba
53QDMT30-718 42QDMT30-718 46302333 38QDMT30-718 46302407 Rotary Mitsubishi
53QDMT36-718 42QDMT36-718 46302334 38QDMT36-718 46302408 Reciprocating Copeland
53QDMT36-518 42QDMT36-718 46304040 38QDMT36-518 46304039 Scroll Sanyo
53QDMT42-718 42QDMT42-718 46302390 38QDMT42-718 46302388 Reciprocating Copeland
53QDMT42-518 42QDMT42-718 46304046 38QDMT42-518 46304045 Scroll Sanyo
53QDMT48-518 42QDMT48-718 46302335 38QDMT48-518 46302409 Scroll Sanyo
53QDMT60-518 42QDMT60-718 46302336 38QDMT60-518 46302410 Scroll Copeland
3.2 Unit Models – Domestic Heat Pump
HEAT
PUMP
System Model Indoor Unit Outdoor Unit
Model P/N Model P/N Model P/N Compressor
Type Supplier
53QDMT12-718 42QDMT12-718 46304174 38QDMT12-718 46302337 Rotary GMCC / Toshiba
53QDMT18-718 46302418 42QDMT18-718 46302391 38QDMT18-718 46305038 Rotary GMCC / Toshiba
53QDMT24-718 46302419 42QDMT24-718 46302392 38QDMT24-718 46302412 Rotary GMCC / Toshiba
53QDMT30-718 46302420 42QDMT30-718 46302393 38QDMT30-718 46302413 Rotary Mitsubishi
53QDMT36-718 46302421 42QDMT36-718 46304226 38QDMT36-718 46304224 Reciprocating Copeland
53QDMT36-518 42QDMT36-718 46304037 38QDMT36-518 46304036 Scroll Copeland
53QDMT42-718 46302436 42QDMT42-718 46302396 38QDMT42-718 46302389 Reciprocating Copeland
53QDMT42-518 42QDMT42-718 46304043 38QDMT42-518 46304042 Scroll Copeland
53QDMT48-518 46302422 42QDMT48-718 46302397 38QDMT48-518 46302415 Scroll Copeland
53QDMT60-518 46302423 42QDMT60-718 46302398 38QDMT60-518 46302417 Scroll Copeland