Mitsubishi Heavy Industries SRK20ZMA-S User manual

RESIDENTIAL AIR-CONDITIONING
TECHNICAL MANUAL & PARTS LIST
WALL MOUNTED TYPE
RESIDENTIAL AIR-CONDITIONERS
(Split system, air to air heat pump type)
SRK20ZMA-S
SRK25ZMA-S
SRK35ZMA-S
SRK50ZMA-S
Manual No.'14 • SRK-T-154

-
1
-
'14 • SRK-T-154
TECHNICAL MANUAL

-
2
-
'14 • SRK-T-154
gs32+4
CONTENTS
1. SPECIFICATIONS ........................................................................................ 4
(2) Outdoor units ....................................................................................... 9
..................................................... 23
2EMOTECONTROL ..................................................................................... 12
......................................................................... 8
(1) Indoor units .......................................................................................... 8
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING .............................................................................. 14
(1) Indoor units .......................................................................................... 14
4. NOISE LEVEL ............................................................................................ 17
(2) Outdoor units 
6. RANGE OF USAGE & LIMITATIONS
................................................................................... 25
7. CAPACITY TABLES
5. PIPING SYSTEM ...................................................................................... 21
.................................................................................. 27
8. APPLICATION DATA
9. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 39
4IMEROPERATION .................................................................................. 44
(9) $AUTOOPERATION ........................................................................... 43
............................... 40
/PERATIONCONTROLFUNCTIONBYWIRELESSREMOTECONTROL
&LAPANDLOUVERCONTROL ...................................................................... 42
3ELECTIONOFTHEANNUALCOOLINGFUNCTION .............................................. 41
)NSTALLINGTWOAIRCONDITIONERSINTHESAMEROOM
......................................................................... 40!UTORESTARTFUNCTION
5NIT/./&&BUTTON ........................................................................... 40
....................... 39
3ILENTMODE .................................................................................... 44
)NSTALLATIONLOCATIONSETTING ........................................................... 44
.IGHTSETBACK .................................................................................. 44
/UTLINEOFHEATINGOPERATION 
/UTLINEOFDRYDEHUMIDIFYINGOPRATION .............................................. 47
/UTLINEOFCOOLINGOPERATION ............................................................... 46
)NSTALLATIONOFINDOORUNIT ...................................................................... 27
)NSTALLATIONOFOUTDOORUNIT .................................................................. 31
%CONOMYOPERATION .............................................................................. 41
(IGHPOWEROPERATION ........................................................................... 41
/UTLINEOFAUTOMATICOPERATION ........................................................... 47
0ROTECTIVECONTROLFUNCTION ................................................................... 48
$2%$ 

-
3
-
'14 • SRK-T-154
(10) How to make sure of wireless remote control ...................................... 74
(12) Outdoor unit inspection points .............................................................. 75
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 74
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor ......... 72
(9) Checking the indoor electrical equipment ........................................... 72
■How to read the model name
Example: SRK 20 Z
Series code
Inverter type
Product capacity (Cooling capacity : 2.0kW)
Model name SRK : Wall mounted type
SRC : Outdoor unit
MA-S
........................................................................................... 78
11. OPTION PARTS
.............................................................. 78
..................................................................... 84
(1) Wired remote control (RC-E5)
(2) Interface kit (SC-BIKN-E)
(3) Super link E board (SC-ADNA-E) .......................................................... 88
(6) Service mode (Trouble mode access function) ................................... 59
(7) Inspection procedures corresponding to detail of trouble .................... 67
..................... 57
(4) Troubleshooting procedure (If the air conditioner runs)
(3) Troubleshooting procedure
(If the air conditioner does not run at all)
........ 56
(2) Items to check before troubleshooting ................................................. 56
(5) Self-diagnosis table ............................................................................. 58
............................................................................... 56
(1) Cautions ............................................................................................. 56
10. MAINTENANCE DATA