ROYAL CLIMA 2RFM-14HN/OUT User manual

SERVICE MANUAL
AIRCONDITIONER
SUPER DC INVERTER MULTI TYPE
2RFM-14HN/OUT
2RFM-18HN/OUT
3RFM-21HN/OUT
3RFM-28HN/OUT
4RFM-36HN/OUT
5RFM-42HN/OUT
DC MULTI OUTDOOR UNITS

1
CONTENTS
1. General information of Outdoor Units..........................................2
2. Features..........................................................................................3
3. Dimensions.....................................................................................4
4. Refrigeration Cycle Diagram.........................................................5
5. Wiring diagram...............................................................................7
6. Indoor units combination............................................................11
7. Sound Levels................................................................................13
8. Installation Details .......................................................................14
8.1 Wrench torque sheet for installation.......................................................................................... 14
8.2 Connecting the cables............................................................................................................... 14
8.3 Pipe length and the elevation.................................................................................................... 14
8.4 Installation for the first time........................................................................................................ 15
8.5 Adding the refrigerant after running the system for many years............................................... 19
8.6 Re-installation while the indoor unit need to be repaired.......................................................... 20
8.7 Re-installation while the outdoor unit need to be repaired........................................................ 22
9. Electronic control function ........................................................24
10. Troubleshooting........................................................................29

2
1. General information of Outdoor Units
Model name
Dimension (mm)
Compressor
2RFM-14HN/OUT
800x333x554
ASN108D22UEZ
2RFM-18HN/OUT
800x333x554
ASN140D21UFZ
ASM135D23UFZ
3RFM-21HN/OUT
845x363x702
ASM135D23UFZ
3RFM-28HN/OUT
946x410x810
ATF235D22UMT
4RFM-36HN/OUT 946x410x810 ATF310D43UMT
5RFM-42HN/OUT 946x410x810 ATF310D43UMT

3
2. Features
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

4
3. Dimensions
Model
Unit：mm
W
D
H
W1
A
B
800
333
554
860
514
340
800
333
554
860
514
340
845
363
702
923
540
350
946
410
810
1034
673
403
946
410
810
1034
673
403
946
410
810
1034
673
403
A
B
D
2RFM-14HN/OUT
2RFM-18HN/OUT
3RFM-21HN/OUT
3RFM-28HN/OUT
4RFM-36HN/OUT
5RFM-42HN/OUT

5
4. Refrigeration Cycle Diagram
4.1 Refrigeration circuit drawing of inverter 1 drive 2 type
L IQ U ID V A L V E A
G A S V A L V E A
H E A T
E X C H A N G E
(E V A P O R A T O R )
H E A T
E X C H A N G E
(C O N D E N S ER )
C o m p r e ss o r
4 -W A Y V A L V E
C O O L IN G
H E A T IN G
T 2 E v a p o ra to r
te m p . s e n s o r
m id d le
T 1 R o o m
te m p . s e n s o r
T3
C o n d e n s e r
te m p . s e n s o r
T 5 D is c h a rg e
te m p . s e n s o r
T 4 A m b ie n t
te m p . s e n s o r
IN D O O R O U T D O O R
E X V A C A P IL LA R Y A
C H E C K V A L V E
C A P ILL A R Y T U B E
E X V B C A P IL LA R Y B
L IQ U ID V A L V E B
G A S V A L V E B
A c c u m u la t o r
T 2 B - A E v a p o r a to r
te m p . s e n s o r o u tle t
T 2 B -B
4.2 Refrigeration circuit drawing of inverter 1 drive 3 type
L IQ U ID V A L V E A
G A S V A L V E A
H E A T
E X C H A N G E
(E V A P O R A T O R )
H E A T
E X C H A N G E
(C O N D E N S E R )
C o m p re ss o r
4 -W A Y V A L V E
C O O LIN G
H E A T IN G
T 2 E v a p o ra to r
te m p . s e n s o r
m id d le
T 1 R o o m
te m p . s e n s o r
T3
C o n d e n s e r
te m p . s e n s o r
T 5 D is c h a rg e
te m p . s e n s o r
T 4 A m b ie n t
te m p . s e n s o r
IN D O O R O U T D O O R
E X V A C A P IL L A R Y A
C H E C K V A L V E
C A P ILL A R Y T U B E
E X V B C A P IL L A R Y B
L IQ U ID V A L V E B
G A S V A L V E B
E X V C C A P ILL A R Y C
L IQ U ID V A L V E C
G A S V A L V E C
A c c u m u la to r
T 2 B -A E v a p o ra t o r
te m p . s e n s o r o u tle t
T 2 B -B
T 2 B -C

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4.3 Refrigeration circuit drawing of inverter 1 drive 4 type
L IQ U ID V A L V E A
G A S V A LV E A
H E A T
E X C H A N G E
(E V A P O R A T O R )
H E A T
E X C H A N G E
(C O N D E N S E R )
C o m p re s s o r
4 -W A Y V A L V E
C O O L IN G
H E A T IN G
T 2 E v a p o ra to r
te m p . s e nsor
m id d le
T 1 R oom
te m p . s e nsor
T3
C o n d e n s er
te m p . s e nsor
T 5 D i s charg e
te m p . s e nsor
T 4 A m b ient
te m p . s e nsor
IN D O O R O U T D O O R
E X V A C A P ILLA R Y A
C H E C K V A L V E
C A P ILLA R Y T U B E
E X V B C A P ILLA R Y B
L IQ U ID V A L V E B
G A S V A LV E B
E X V C C A P IL LA RY C
L IQ U I D V A L V E C
G A S V A L V E C
E X V D C AP IL LA R Y D
L IQ U I D V A L V E D
G A S V A L V E D
A c c u m u la to r
H ig h p r e ss u re
s w itc h
L o w p re s s u re
s w itc h
T 2 B -A E v a p o ra tor
te m p . s e n s or o u tle t
T 2B -B
T 2B -C
T 2B -D
4.4 Refrigeration circuit drawing of inverter 1 drive 5 type
L IQ U ID V A L V E A
G A S V A L V E A
H E A T
E X C H A N G E
(E V A P O R A T O R ) H E A T
E X C H A N G E
(C O N D E N S E R )
C O O L IN G
H E A T IN G
T 2 E v a p o ra to r
te m p . s e n s o r
m id d le
T 1 R o o m
te m p . s e n s o r
T3
Condenser
te m p . s e n s o r
T 4 A m b ie n t
te m p . s e n s o r
IN D O O R O U T D O O R
E X V A C A P ILL A R Y A
C H E C K V A L V E
C A P IL LA R Y T U B E
E X V B C A P ILL A R Y B
L IQ U ID V A L V E B
G A S V A L V E B
E X V C C A P IL L A R Y C
L IQ U ID V A L V E C
G A S V A L V E C
E X V D C A P IL L A R Y D
L IQ U ID V A L V E D
G A S V A L V E D
E X V E C A P ILL A R Y E
L IQ U ID V A L V E E
G A S V A L V E E
C o m p re s s o r
4 -W A Y V A L V E
T 5 D is c h a rg e
te m p . s e n s o r
A c c u m u la t o r
H ig h p re s s u re
sw itc h
L o w p re s s u re
sw itc h
T 2 B -A E v a p o ra to r
tem p. s e n s or outlet
T 2 B -B
T 2 B -C
T 2 B -D
T 2 B -E

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5. Wiring diagram
2RFM-14HN/OUT, 2RFM-18HN/OUT

8
Note: S(1)&S(2) are used in other type of models. They don't need to be connected in multi models.
3RFM-21HN/OUT

9
4RFM-28HN/OUT
4RFM-36HN/OUT