Carrier 42QHF012DS User manual

1/ 78
Service Manual
AIR CONDITIONER
DC INVERTER MULTI TYPE
This manual applies to models:
High Wall
42QHF009DS
42QHF012DS
42QHF018DS
Duct
42QSM009DS
42QSM012DS
42QSM018DS
Cassette
42QTD009DS
42QTD012DS
42QTD018DS
Console
42QFA009DS
42QFA012DS
42QFA018DS
Universal CDU
38QUS018DS2
38QUS027DS3
38QUS036DS4

2/ 78
CONTENTS
1. General information of Outdoor& Indoor Units .................................. 3
2. Features ................................................................................................. 4
3. Dimensions .......................................................................................... 11
4. Service space for light commercial indoor ....................................... 18
5. Wiring Diagram .................................................................................... 20
6. Refrigeration Cycle Diagram .............................................................. 25
7.Indoor units combination. ................................................................... 27
8. Static Pressure (Duct) ......................................................................... 28
9.Operation Characteristics ................................................................... 29
10.Installation Details .............................................................................. 30
11.Electronic control function ................................................................ 40
12.Troubleshooting ................................................................................. 57

3/ 78
1. General information of Outdoor& Indoor Units
■Outdoor
Model name
Dimension (mm)
Compressor
38QUS018DS2
845x320x700
DA130M1C-31FZ
38QUS027DS3
900x315x860
DA250S2C-30MT
38QUS036DS4
990x345x965
TNB306FPGMC-L
■Indoor
High wall
A5 Duct
Four-way cassette (compact):
Console:
Model name
Dimension (mm)
42QHF009DS
800x188x275
42QHF012DS
800x188x275
42QHF018DS
940x205x275
42QSM009DS
700x635x210
42QSM012DS
700x635x210
42QSM018DS
920x635x210
42QTD009DS
570x570x260
42QTD012DS
570x570x260
42QTD018DS
570x570x260
42QFA009DS
700x600x210
42QFA012DS
700x600x210
42QFA018DS
700x600x210

4/ 78
2. Features
2.1 Outdoor unit 2.2 High wall
2.3 Four-way cassette type(compact)
⑴ New panel
 360°surrounding air outlet design, affords comfortable feeling
⑵Compact design
The hydrophilic fin can improve the heating efficiency at operation mode.
It protects the valves and prevents water from dripping.
4 way valve control
It is only operated in the heating operation mode except defrosting operation.
Outdoor unit
Power relay control
Hydrophilic aluminum fin
Anti-rust cabinet
Valve protection cover
Low noise air flow system
Discharge pipe temperature protection
High wall
Filter
Refrigerant leakage detect
Anti-rust cabinet
Self-diag. Function
Low noise air flow system
Louver position memory function
2 ways of drainage

5/ 78
 The body size is 570×260×570mm, it’s just smaller than the console board, so it’s very easy for
installation and will not damage the decoration. The panel size is 647×50×647mm.
 The hooks are designed in the four corners of the body, which can save installation space.
⑶Electric control box built-in design
 The E-box is simply and safely built inside the indoor unit. It’s convenient for installation and
maintenance. Can check the control part easily, you only need to open the air return grille.
⑷Fresh air intake function:
 Fresh air fulfills air quality more healthy and comfortable.