Mitsubishi Electric MUZ-D30NA-1 User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS····················· 3
3. SPECIFICATION················································ 4
4. OUTLINES AND DIMENSIONS ························ 6
5. WIRING DIAGRAM············································ 7
6. REFRIGERANT SYSTEM DIAGRAM ··············11
7. DATA································································ 13
8. ACTUATOR CONTROL··································· 20
9. SERVICE FUNCTIONS ··································· 21
10. TROUBLESHOOTING····································· 22
11. DISASSEMBLY INSTRUCTIONS···················· 41
Models
MUZ-D30NA /- 1/- U1 /- U2
MUZ-D36NA /- 1/- U1 /- U2
MUY-D30NA /- 1
MUY-D36NA /- 1
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Indoor unit service manual
MSZ-D•NA Series (OBH501)
MSY-D•NA Series (OBH501)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
TM
HFC
utilized
R410A
No. OBH502
REVISED EDITION-C
PARTS CATALOG (OBB502)
Revision C:
• Errors in TROUBLESHOOTING have been
corrected.
Please void OBH502 REVISED EDITION-B.

2
Revision A:
• 3. SPECIFICATION has been corrected.
Revision B:
• MUZ-D•NA- 1/-U2 and MUY-D•NA- 1have been corrected.
Revision C:
• Errors in TROUBLESHOOTING have been corrected.
Use the specified refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.
Correct refrigerant is specified in the manuals and on the spec labels provided with our products.
We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by
failure to follow the instructions.

3
MUZ-D30NA MUZ-D30NA- U1
MUZ-D36NA MUZ-D36NA- U1
MUY-D30NA
MUY-D36NA
1. New model
MUZ-D30NA →MUZ-D30NA- 1MUZ-D30NA- U1 →MUZ-D30NA- U2
MUZ-D36NA →MUZ-D36NA- 1MUZ-D36NA- U1 →MUZ-D36NA- U2
MUY-D30NA →MUY-D30NA- 1
MUY-D36NA →MUY-D36NA- 1
1. Wiring diagram has been changed.
2. Fan motor has been changed.
PART NAMES AND FUNCTIONS
2
MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA
Piping
Air outlet
Drain hose
Drain outlet
Air inlet
(back and side)
1TECHNICAL CHANGES

4
Item Model MSZ-D30NA MSY-D30NA MSZ-D36NA MSY-D36NA
Capacity
Rated (Minimum ~
Maximum)
Cooling 1
Btu/h
30,700
(9,800 ~ 30,700)
30,700
(9,800 ~ 30,700)
32,000/33,200
(9,800 ~ 32,000) /
(9,800 ~ 33,200)
33,200/34,600
(9,800 ~ 33,200) /
(9,800 ~ 34,600)
Heating 47 1 32,600
(8,700 ~ 34,000) —35,200 (8,700 ~ 36,000) —
Capacity Heating 17 2 Btu/h 20,800 — 22,800 —
Power consumption
Rated (Minimum ~
Maximum)
(TOTAL)
Cooling 1
W
3,850
(620 ~ 3,850)
3,380
(620 ~ 3,380)
4,140/4,360
(620 ~ 4,140) /
(620 ~ 4,360)
4, 210/4,240
(620 ~ 4,210) /
(620 ~ 4,240)
Heating 47 1 3,360
(520 ~ 3,600) —3,840 (520 ~ 4,100) —
Power consumption Heating 17 2 W 2,620 — 3,000 —
EER 1 [SEER] 3 Cooling 8.0 [14.5] 9.1 [16.0] 7.7/7.6
[14.5]
7.9/8.2
[15.1]
HSPF IV(V) 4 Heating 8.2 (6.7) — 8.2 (6.7) —
COP Heating
1 2.84 — 2.69 —
Outdoor unit model MUZ-D30NA MUY-D30NA MUZ-D36NA MUY-D36NA
Power supply V , phase , Hz 208/230 , 1 , 60
Max. fuse size (time delay) A 25
Min. circuit ampacity A 21
Fan motor F.L.A 0.93
Compressor
Model TNB220FMCHT
R.L.A 16
L.R.A 20
Refrigeration oil cc 870 (NEO22)
Refrigerant control Linear expansion valve
Sound level 1 Cooling dB(A) 55 55 56 56
Heating 57 — 57 —
Defrost method Reverse cycle — Reverse cycle —
Dimensions
W
in.
33-1/16
D13
H 33-7/16
Weight Ib. 141 126 141 126
External finish Munsell 3Y 7.8/1.1
Remote controller Wireless type
Control voltage (by built-in transformer) 12 - 24 VDC
Refrigerant piping Not supplied
Refrigerant pipe size
(Min. wall thickness)
Liquid in. 3/8 (0.0315)
Gas 5/8 (0.0394)
Connection method Indoor Flared
Outdoor
Between the indoor
& outdoor units
Height
difference ft. 50
Piping length 100
Refrigerant charge (R410A) 4 lb. 10 oz. 4 lb. 4 lb. 10 oz. 4 lb.
NOTE: Test conditions are based on ARI 210/240.
1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB) Rated frequency
(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB Rated frequency
2: (Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 17˚FDB, 15˚FWB Maximum frequency
3SPECIFICATION

5
Test condition
ARI Mode Test Indoor air condition (°F) Outdoor air condition (°F)
Dry bulb Wet bulb Dry bulb Wet bulb
SEER
(Cooling)
"A" Cooling Steady State
at rated compressor Speed 80 67 95 (75)
"B-2" Cooling Steady State
at rated compressor Speed 80 67 82 (65)
"B-1" Cooling Steady State
at minimum compressor Speed 80 67 82 (65)
Low ambient Cooling Steady State
at minimum compressor Speed 80 67 67 (53.5)
Intermediate Cooling Steady State
at Intermediate compressor Speed 580 67 87 (69)
HSPF
(Heating)
Standard Rating-Heating
at rated compressor Speed 70 60 47 43
Low temperature Heating
at rated compressor Speed 70 60 17 15
Max temperature Heating
at minimum compressor Speed 70 60 62 56.5
High temperature Heating
at minimum compressor Speed 70 60 47 43
Frost Accumulation
at rated compressor Speed 70 60 35 33
Frost Accumulation
at Intermediate compressor Speed 570 60 35 33
5: At Intermediate compressor Speed
=("Cooling rated compressor speed" - "minimum compressor speed") / 3 + "minimum compressor speed".
3, 4
OPERATING RANGE
(1) POWER SUPPLY
Rated voltage Guaranteed voltage (V)
Outdoor unit
208/230 V
1 phase
60 Hz
Min. 187 208 230 Max. 253
(2) OPERATION
Mode Condition
Intake air temperature (°F)
Indoor Outdoor
DB WB DB WB
Cooling
Standard temperature 80 67 95 —
Maximum temperature 90 73 115 —
Minimum temperature 67 57 14 —
Maximum humidity 78% —
Heating
Standard temperature 70 60 47 43
Maximum temperature 80 67 75 65
Minimum temperature 70 60 14 13

6
Open as a rule
20 inch or more if
the front and both
sides are open
4 inch or more /
8 inch or more if
there are obstacles
to both sides
Open as a rule
20 inch or more if the back,
both sides and top are open
14 in. or more
4 in. or more
REQUIRED SPACE
Unit: inch
MUZ-D30NA MUZ-D36NA MUY-D30NA MUY-D36NA
4OUTLINES AND DIMENSIONS

7
MUZ-D30NA MUZ-D30NA- U1 MUZ-D36NA MUZ-D36NA- U1
5WIRING DIAGRAM

8
MUZ-D30NA- 1MUZ-D30NA- U2 MUZ-D36NA- 1MUZ-D36NA- U2

9
MUY-D30NA MUY-D36NA

10
MUY-D30NA- 1MUY-D36NA- 1