Mitsubishi Electric Mr. Slim SUZ-KA25VA6 Operating manual

TECHNICAL & SERVICE MANUAL
R410A
[Model Name]
SUZ-KA25VA6
SUZ-KA35VA6
SUZ-KA50VA6
SUZ-KA60VA6
SUZ-KA71VA6
CONTENTS
1. COMBINATION OF INDOOR AND OUTDOOR UNITS
..... 2
2. PARTS NAMES AND FUNCTIONS .................. 3
3. SPECIFICATION................................................ 4
4. NOISE CRITERIA CURVES.............................. 6
5. OUTLINES AND DIMENSIONS ........................ 7
6. WIRING DIAGRAM............................................ 9
7. REFRIGERANT SYSTEM DIAGRAM............. 12
8. ACTUATOR CONTROL................................... 16
9. SERVICE FUNCTIONS ................................... 17
10. TROUBLESHOOTING..................................... 17
11. DISASSEMBLY PROCEDURE........................ 34
Indication of
model name
Note:
•This service manual
describes service data of
the outdoor units only.
HFC
utilized
R410A
SUZ-KA25VA6.TH
SUZ-KA35VA6.TH
PARTS CATALOG (TCB004)
No. TCH004
November 2016
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
[Service Ref.]
SUZ-KA25VA6.TH SUZ-KA25VA6.TH-ER
SUZ-KA25VA6.TH-ET
SUZ-KA35VA6.TH SUZ-KA35VA6.TH-ER
SUZ-KA35VA6.TH-ET
SUZ-KA50VA6.TH SUZ-KA50VA6.TH-ER
SUZ-KA50VA6.TH-ET
SUZ-KA60VA6.TH SUZ-KA60VA6.TH-ER
SUZ-KA60VA6.TH-ET
SUZ-KA71VA6.TH SUZ-KA71VA6.TH-ER
SUZ-KA71VA6.TH-ET

2
TCH004
1COMBINATION OF INDOOR AND OUTDOOR UNITS
INDOOR UNIT SERVICE MANUAL
Indoor unit Outdoor unit Heat pump type
SUZ-
Service Ref. Service
manual No.
KA25VA6.TH
KA25VA6.TH-ER
KA25VA6.TH-ET
KA35VA6.TH
KA35VA6.TH-ER
KA35VA6.TH-ET
KA50VA6.TH
KA50VA6.TH-ER
KA50VA6.TH-ET
KA60VA6.TH
KA60VA6.TH-ER
KA60VA6.TH-ET
KA71VA6.TH
KA71VA6.TH-ER
KA71VA6.TH-ET
Heat pump without electric heater
SLZ-KF25VA2.TH(-ER) OCH616
OCB616
────
SLZ-KF35VA2.TH(-ER) ─ ───
SLZ-KF50VA2.TH(-ER) ── ──
SLZ-KF60VA2.TH(-ER) ─── ─
SEZ-KD25VAQR2.TH(-ER) HWE1008
BWE102040
(BWE014090)
────
SEZ-KD35VAQR2.TH(-ER) ─ ───
SEZ-KD50VAQR2.TH(-ER) ── ──
SEZ-KD60VAQR2.TH(-ER) ─── ─
SEZ-KD71VAQR2.TH(-ER) ────
SEZ-KD25VALR2.TH
HWE0711
BWE012050
────
SEZ-KD35VALR2.TH ─ ───
SEZ-KD50VALR2.TH ── ──
SEZ-KD60VALR2.TH ─── ─
SEZ-KD71VALR2.TH ────
PLA-RP35EA.UK OCH625
OCB625
─ ───
PLA-RP50EA.UK ── ──
PLA-RP60EA.UK ─── ─
PLA-RP71EA.UK ────
PCA-RP35KAQR2(-ER) OCH491
OCB491
─ ───
PCA-RP50KAQR2(-ER) ── ──
PCA-RP60KAQR2(-ER) ─── ─
PCA-RP71KAQR2(-ER) ────
PEAD-RP35JAQR2.UK
BWE014160
─ ───
PEAD-RP50JAQR2.UK ── ──
PEAD-RP60JAQR2.UK ─── ─
PEAD-RP71JAQR2.UK ────
PEAD-RP35JALQR2.UK ─ ───
PEAD-RP50JALQR2.UK ── ──
PEAD-RP60JALQR2.UK ─── ─
PEAD-RP71JALQR2.UK ────

3
TCH004
2PARTS NAMES AND FUNCTIONS
SUZ-KA25VA6
SUZ-KA35VA6
SUZ-KA50VA6
SUZ-KA60VA6
SUZ-KA71VA6
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
Model SUZ-KA·VA6
Drain socket 1
Piping
Air outlet
Drain outlet
Air inlet
(back and side)
Drain hose

4
TCH004
SPECIFICATION
3
Note: Test conditions are based on JIS B8616
Cooling : Indoor D.B. 27°C W.B. 19°C
Outdoor D.B. 35°C
Heating : Indoor D.B. 20°C
Outdoor D.B. 7°C W.B. 6°C
Refrigerant piping length (one way): 7 m
*Measured under rated operating frequency.
Outdoor model
SUZ-KA25VA6 SUZ-KA35VA6 SUZ-KA50VA6 SUZ-KA60VA6 SUZ-KA71VA6
Power supply Single phase 230 V, 50 Hz
Compressor
Model KNB073FKFMC KNB092FFAMC SNB130FGBMT SNB172FEKMT
Output W 550 650 900 1,200
Current* Cooling A2.76 4.06 5.58 6.62 8.02
Heating 3.24 4.09 5.75 6.37 8.13
Refrigeration oil
(Model)
L 0.31 (FV50S) 0.27 (FV50S) 0.35 (FV50S) 0.4 (FV50S)
Fan motor Model RC0J50-NA RC0J60-BC RC0J60-BC
Current* Cooling A0.24 0.29 0.84 0.84 0.83
Heating 0.27 0.28 0.93 0.93 0.82
Dimensions W × H × D mm 800 × 550 × 285 840 × 880 × 330
Weight kg 30 35 54 50 53
Special remarks
Air
flow*
Cooling High
m³/h
1,806 2,868 3,492 3,426
Med. 1,806 2,868 3,066 3,006
Low 1,170 1,038 1,602 1,692 1,512
Heating High 2,106 2,778 2,952 2,892 Med. 1,806 1,770 2,778 2,952 2,892
Low 1,452 1,326 2,124 2,226 2,280
Sound pressure level*
Cooling
dB(A)
47 49 52 55
Heating 48 50 52 55
Sound power level 58 62 65 65 69
Fan
speed
Cooling High
rpm
740 810 840 950
Med. 740 810 840
Low 740 490 480 450
Heating High 860 900 810 Med. 740 770 810
Low 600 610 620 650
Fan speed regulator 3
Refrigerant filling capacity
(R410A) kg 0.80 1.15 1.60 1.60 1.80

5
TCH004 5
Specifications and rating conditions of main electric parts
Model
Item
SUZ-KA25VA6 SUZ-KA35VA6 SUZ-KA50VA6 SUZ-KA60VA6 SUZ-KA71VA6
Smoothing
capacitor
(C61) — — 620 μF 420 V — —
(C62, C63) 620 μF 420 V 620 μF 420 V 620 μF420 V — —
(CB1, 2, 3) — — — 560 μF 450 V 560 μF 350 V
Diode module (DB61) 15 A 600 V 15 A 600 V 25 A 600 V — —
Fuse
(F61) T20 A L250 V T20 A L250 V T20 A L250 V — —
(F62) — — — T20A L250V T20A L250V
(F701, F801, F901) T3.15 A L250 V T3.15 A L250 V T3.15 A L250 V — —
(IC700) 15 A 600 V 15 A 600 V 20 A 600 V — —
Inteligent power
module (IPM) — — — 20 A 600 V
(IC932) 8 A 600 V 8 A 600 V 8 A 600 V 5 A 600 V 5 A 600 V
Power factor
controller (PFC) — — — 20A 600V 20A 600V
(IC820) 20 A 600 V 20 A 600 V 20 A 600 V — —
Expansion valve
coil (LEV) 12 V DC
Reactor (L61) 18 mH 23 mH 23 mH — —
(L) — — — 340 μH 20 A 340 μH 20 A
Current-Limiting
PTC thermistor (PTC64, PTC65) 33Ω
Terminal block (TB1, TB2) — — — 3P 3P
(TB) 5P 5P 5P — —
Relay
(X63) 3 A 250 V 3 A 250 V 3 A 250 V — —
(X64) 20 A 250 V
(X601) — — — 3 A 250 V 3 A 250 V
(X602) — — — 3 A 250 V 3 A 250 V
R.V. coil (21S4) 220–240 V AC

6
TCH004
NOISE CRITERIA CURVES
4
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
COOLING
FUNCTION SPL(dB(A)) LINE
High
Med.
FAN SPEED
HEATING
47
48
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
NC-10
SUZ-KA25VA6.TH
SUZ-KA25VA6.TH-ER
SUZ-KA25VA6.TH-ET
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
COOLING
FUNCTION SPL(dB(A)) LINE
FAN SPEED
HEATING
49
50
High
Med.
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
NC-10
SUZ-KA35VA6.TH
SUZ-KA35VA6.TH-ER
SUZ-KA35VA6.TH-ET
COOLING
FUNCTION SPL(dB(A)) LINE
High
FAN SPEED
HEATING
52
52
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
NC-10
SUZ-KA50VA6.TH
SUZ-KA50VA6.TH-ER
SUZ-KA50VA6.TH-ET
Test conditions
Cooling: Dry-bulb temperature 35°C
Heating: Dry-bulb temperature 7°C
Wet-bulb temperature 6°C
OUTDOOR UNIT
MICROPHONE
1 m
SUZ-KA60VA6.TH SUZ-KA71VA6.TH
SUZ-KA60VA6.TH-ER SUZ-KA71VA6.TH-ER
SUZ-KA60VA6.TH-ET SUZ-KA71VA6.TH-ET
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
COOLING
FUNCTION SPL(dB(A)) LINE
High
FAN SPEED
HEATING
55
55
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
NC-10

7
TCH004
5OUTLINES AND DIMENSIONS
10
69
800
302.5
500 Bolt pitch for installation
150
22.3
Handle
550
280
164.5
99.5
170.5
23 Service panel
Service port
285
344.5
44
400
Air in
Air out
Air in
17.5
Bolt pitch for
installation
304~325
40
Liquid refrigerant pipe joint
Refrigerant pipe (flared) [6.35
Gas refrigerant pipe joint
Refrigerant pipe (flared) [9.52
43-
35-
2-Oval holes 10×21
REQUIRED SPACE
Basically, leave this space open.
Only if front and both sides are open,
leave 100 mm at minimum.
350mm or more
200mm or more
100mm or more
100mm or more
200 mm or more.
Leave any 2 sides among
right, left or rear open.
Drain hole [42
Unit: mm
SUZ-KA25VA6.TH SUZ-KA35VA6.TH
SUZ-KA25VA6.TH-ER SUZ-KA35VA6.TH-ER
SUZ-KA25VA6.TH-ET SUZ-KA35VA6.TH-ET

8
TCH004
417.5
40
42
Drain hole
175 500
330
50
Air in
Air out 2-Oval holes 10 21
840
109 81
880
452
Service panel
99.5
164.5
195
35
44
Liquid refrigerant pipe joint
Refrigerant pipe (flared)
Ø 6.35...(SUZ-KA50/60VA6)
Ø 9.52...(SUZ-KA71VA6)
Gas refrigerant pipe joint
Refrigerant pipe (flared)
Ø 12.7...(SUZ-KA50VA6)
Ø 15.88...(SUZ-KA60/71VA6)
350 mm or more
100 mm or more
REQUIRED SPACE
Basically, leave this space open.
Only if front and both sides are open,
leave 500 mm at minimum.
100mm or more
500 mm or more.
Leave any 2 sides among
right, left or rear open.
Air in
Bolt pitch for
installation
360
Unit: mm
SUZ-KA50VA6.TH SUZ-KA60VA6.TH SUZ-KA71VA6.TH
SUZ-KA50VA6.TH-ER SUZ-KA60VA6.TH-ER SUZ-KA71VA6.TH-ER
SUZ-KA50VA6.TH-ET SUZ-KA60VA6.TH-ET SUZ-KA71VA6.TH-ET

9
TCH004 9
6WIRING DIAGRAM
SUZ-KA25VA6.TH SUZ-KA35VA6.TH
SUZ-KA25VA6.TH-ER SUZ-KA35VA6.TH-ER
SUZ-KA25VA6.TH-ET SUZ-KA35VA6.TH-ET

10
TCH004
SUZ-KA50VA6.TH
SUZ-KA50VA6.TH-ER
SUZ-KA50VA6.TH-ET